From cd2542e0fd8578f6e41114ffebbda1f16f7d04ce Mon Sep 17 00:00:00 2001
From: syuilo <syuilotan@yahoo.co.jp>
Date: Mon, 2 Apr 2018 04:15:27 +0900
Subject: Refactor

---
 src/client/app/ch/tags/channel.tag                 |   2 +-
 .../app/common/scripts/compose-notification.ts     |   4 +-
 .../app/common/views/components/autocomplete.vue   |   2 +-
 .../views/components/messaging-room.message.vue    |   2 +-
 .../app/common/views/components/messaging.vue      |   2 +-
 .../app/common/views/components/othello.game.vue   |   2 +-
 .../app/common/views/components/othello.room.vue   |   2 +-
 .../app/common/views/components/post-html.ts       |   2 +-
 .../common/views/components/welcome-timeline.vue   |   2 +-
 .../app/desktop/views/components/friends-maker.vue |   2 +-
 .../views/components/messaging-room-window.vue     |   2 +-
 .../app/desktop/views/components/notifications.vue |   4 +-
 .../desktop/views/components/post-detail.sub.vue   |   2 +-
 .../app/desktop/views/components/post-detail.vue   |   2 +-
 .../app/desktop/views/components/post-preview.vue  |   2 +-
 .../desktop/views/components/posts.post.sub.vue    |   2 +-
 .../app/desktop/views/components/posts.post.vue    |   2 +-
 .../app/desktop/views/components/settings.mute.vue |   2 +-
 .../app/desktop/views/components/user-preview.vue  |   4 +-
 .../desktop/views/components/users-list.item.vue   |   2 +-
 src/client/app/desktop/views/pages/home.vue        |   2 +-
 .../app/desktop/views/pages/messaging-room.vue     |   2 +-
 .../views/pages/user/user.followers-you-know.vue   |   2 +-
 .../app/desktop/views/pages/user/user.friends.vue  |   2 +-
 .../app/desktop/views/pages/user/user.header.vue   |   2 +-
 src/client/app/desktop/views/pages/user/user.vue   |   2 +-
 src/client/app/desktop/views/pages/welcome.vue     |   2 +-
 .../desktop/views/widgets/channel.channel.post.vue |   2 +-
 src/client/app/desktop/views/widgets/polls.vue     |   2 +-
 src/client/app/desktop/views/widgets/trends.vue    |   2 +-
 src/client/app/desktop/views/widgets/users.vue     |   2 +-
 src/client/app/mobile/api/post.ts                  |   2 +-
 .../views/components/notification-preview.vue      |   2 +-
 .../app/mobile/views/components/notification.vue   |   4 +-
 .../app/mobile/views/components/post-card.vue      |   4 +-
 .../mobile/views/components/post-detail.sub.vue    |   2 +-
 .../app/mobile/views/components/post-detail.vue    |   2 +-
 .../app/mobile/views/components/post-preview.vue   |   2 +-
 .../app/mobile/views/components/post.sub.vue       |   2 +-
 src/client/app/mobile/views/components/post.vue    |   2 +-
 .../app/mobile/views/components/user-card.vue      |   2 +-
 .../app/mobile/views/components/user-preview.vue   |   2 +-
 src/client/app/mobile/views/pages/followers.vue    |   2 +-
 src/client/app/mobile/views/pages/following.vue    |   2 +-
 src/client/app/mobile/views/pages/home.vue         |   2 +-
 .../app/mobile/views/pages/messaging-room.vue      |   2 +-
 src/client/app/mobile/views/pages/messaging.vue    |   2 +-
 src/client/app/mobile/views/pages/user.vue         |   4 +-
 .../views/pages/user/home.followers-you-know.vue   |   2 +-
 .../app/mobile/views/pages/user/home.photos.vue    |   2 +-
 src/common/drive/add-file.ts                       |   2 +-
 src/common/drive/upload-from-url.ts                |  46 ++
 src/common/drive/upload_from_url.ts                |  46 --
 src/common/get-notification-summary.ts             |  27 -
 src/common/get-post-summary.ts                     |  45 -
 src/common/get-reaction-emoji.ts                   |  14 -
 src/common/othello/ai/back.ts                      | 376 ---------
 src/common/othello/ai/front.ts                     | 233 ------
 src/common/othello/ai/index.ts                     |   1 -
 src/common/othello/core.ts                         | 340 --------
 src/common/othello/maps.ts                         | 911 ---------------------
 src/common/remote/activitypub/act/create.ts        |   9 -
 src/common/remote/activitypub/act/index.ts         |  22 -
 src/common/remote/activitypub/create.ts            |  87 --
 src/common/remote/activitypub/renderer/context.ts  |   5 -
 src/common/remote/activitypub/renderer/document.ts |   7 -
 src/common/remote/activitypub/renderer/follow.ts   |   8 -
 src/common/remote/activitypub/renderer/hashtag.ts  |   7 -
 src/common/remote/activitypub/renderer/image.ts    |   6 -
 src/common/remote/activitypub/renderer/key.ts      |  10 -
 src/common/remote/activitypub/renderer/note.ts     |  44 -
 .../activitypub/renderer/ordered-collection.ts     |   6 -
 src/common/remote/activitypub/renderer/person.ts   |  20 -
 src/common/remote/activitypub/resolve-person.ts    | 109 ---
 src/common/remote/activitypub/resolver.ts          |  97 ---
 src/common/remote/activitypub/type.ts              |   3 -
 src/common/remote/resolve-user.ts                  |  26 -
 src/common/remote/webfinger.ts                     |  25 -
 src/common/text/parse/elements/mention.ts          |   2 +-
 src/common/user/get-acct.ts                        |   3 -
 src/common/user/get-summary.ts                     |  18 -
 src/common/user/parse-acct.ts                      |   4 -
 src/misc/get-notification-summary.ts               |  27 +
 src/misc/get-post-summary.ts                       |  45 +
 src/misc/get-reaction-emoji.ts                     |  14 +
 src/misc/othello/ai/back.ts                        | 376 +++++++++
 src/misc/othello/ai/front.ts                       | 233 ++++++
 src/misc/othello/ai/index.ts                       |   1 +
 src/misc/othello/core.ts                           | 340 ++++++++
 src/misc/othello/maps.ts                           | 911 +++++++++++++++++++++
 src/misc/user/get-acct.ts                          |   3 +
 src/misc/user/get-summary.ts                       |  18 +
 src/misc/user/parse-acct.ts                        |   4 +
 src/processor/http/follow.ts                       |   4 +-
 src/processor/http/perform-activitypub.ts          |   2 +-
 src/remote/activitypub/act/create.ts               |   9 +
 src/remote/activitypub/act/index.ts                |  22 +
 src/remote/activitypub/create.ts                   |  87 ++
 src/remote/activitypub/renderer/context.ts         |   5 +
 src/remote/activitypub/renderer/document.ts        |   7 +
 src/remote/activitypub/renderer/follow.ts          |   8 +
 src/remote/activitypub/renderer/hashtag.ts         |   7 +
 src/remote/activitypub/renderer/image.ts           |   6 +
 src/remote/activitypub/renderer/key.ts             |  10 +
 src/remote/activitypub/renderer/note.ts            |  44 +
 .../activitypub/renderer/ordered-collection.ts     |   6 +
 src/remote/activitypub/renderer/person.ts          |  20 +
 src/remote/activitypub/resolve-person.ts           | 109 +++
 src/remote/activitypub/resolver.ts                 |  97 +++
 src/remote/activitypub/type.ts                     |   3 +
 src/remote/resolve-user.ts                         |  26 +
 src/remote/webfinger.ts                            |  25 +
 src/server/activitypub/inbox.ts                    |   2 +-
 src/server/activitypub/outbox.ts                   |   6 +-
 src/server/activitypub/post.ts                     |   6 +-
 src/server/activitypub/publickey.ts                |   4 +-
 src/server/activitypub/user.ts                     |   4 +-
 src/server/activitypub/with-user.ts                |   2 +-
 src/server/api/bot/core.ts                         |   8 +-
 src/server/api/bot/interfaces/line.ts              |   6 +-
 .../api/endpoints/drive/files/upload_from_url.ts   |   2 +-
 src/server/api/endpoints/othello/games/show.ts     |   2 +-
 src/server/api/endpoints/othello/match.ts          |   2 +-
 src/server/api/endpoints/posts/create.ts           |   4 +-
 src/server/api/endpoints/users/show.ts             |   2 +-
 src/server/api/limitter.ts                         |   2 +-
 src/server/api/stream/othello-game.ts              |   4 +-
 src/server/webfinger.ts                            |   2 +-
 128 files changed, 2599 insertions(+), 2599 deletions(-)
 create mode 100644 src/common/drive/upload-from-url.ts
 delete mode 100644 src/common/drive/upload_from_url.ts
 delete mode 100644 src/common/get-notification-summary.ts
 delete mode 100644 src/common/get-post-summary.ts
 delete mode 100644 src/common/get-reaction-emoji.ts
 delete mode 100644 src/common/othello/ai/back.ts
 delete mode 100644 src/common/othello/ai/front.ts
 delete mode 100644 src/common/othello/ai/index.ts
 delete mode 100644 src/common/othello/core.ts
 delete mode 100644 src/common/othello/maps.ts
 delete mode 100644 src/common/remote/activitypub/act/create.ts
 delete mode 100644 src/common/remote/activitypub/act/index.ts
 delete mode 100644 src/common/remote/activitypub/create.ts
 delete mode 100644 src/common/remote/activitypub/renderer/context.ts
 delete mode 100644 src/common/remote/activitypub/renderer/document.ts
 delete mode 100644 src/common/remote/activitypub/renderer/follow.ts
 delete mode 100644 src/common/remote/activitypub/renderer/hashtag.ts
 delete mode 100644 src/common/remote/activitypub/renderer/image.ts
 delete mode 100644 src/common/remote/activitypub/renderer/key.ts
 delete mode 100644 src/common/remote/activitypub/renderer/note.ts
 delete mode 100644 src/common/remote/activitypub/renderer/ordered-collection.ts
 delete mode 100644 src/common/remote/activitypub/renderer/person.ts
 delete mode 100644 src/common/remote/activitypub/resolve-person.ts
 delete mode 100644 src/common/remote/activitypub/resolver.ts
 delete mode 100644 src/common/remote/activitypub/type.ts
 delete mode 100644 src/common/remote/resolve-user.ts
 delete mode 100644 src/common/remote/webfinger.ts
 delete mode 100644 src/common/user/get-acct.ts
 delete mode 100644 src/common/user/get-summary.ts
 delete mode 100644 src/common/user/parse-acct.ts
 create mode 100644 src/misc/get-notification-summary.ts
 create mode 100644 src/misc/get-post-summary.ts
 create mode 100644 src/misc/get-reaction-emoji.ts
 create mode 100644 src/misc/othello/ai/back.ts
 create mode 100644 src/misc/othello/ai/front.ts
 create mode 100644 src/misc/othello/ai/index.ts
 create mode 100644 src/misc/othello/core.ts
 create mode 100644 src/misc/othello/maps.ts
 create mode 100644 src/misc/user/get-acct.ts
 create mode 100644 src/misc/user/get-summary.ts
 create mode 100644 src/misc/user/parse-acct.ts
 create mode 100644 src/remote/activitypub/act/create.ts
 create mode 100644 src/remote/activitypub/act/index.ts
 create mode 100644 src/remote/activitypub/create.ts
 create mode 100644 src/remote/activitypub/renderer/context.ts
 create mode 100644 src/remote/activitypub/renderer/document.ts
 create mode 100644 src/remote/activitypub/renderer/follow.ts
 create mode 100644 src/remote/activitypub/renderer/hashtag.ts
 create mode 100644 src/remote/activitypub/renderer/image.ts
 create mode 100644 src/remote/activitypub/renderer/key.ts
 create mode 100644 src/remote/activitypub/renderer/note.ts
 create mode 100644 src/remote/activitypub/renderer/ordered-collection.ts
 create mode 100644 src/remote/activitypub/renderer/person.ts
 create mode 100644 src/remote/activitypub/resolve-person.ts
 create mode 100644 src/remote/activitypub/resolver.ts
 create mode 100644 src/remote/activitypub/type.ts
 create mode 100644 src/remote/resolve-user.ts
 create mode 100644 src/remote/webfinger.ts

(limited to 'src')

diff --git a/src/client/app/ch/tags/channel.tag b/src/client/app/ch/tags/channel.tag
index 2abfb106a5..70e494aedd 100644
--- a/src/client/app/ch/tags/channel.tag
+++ b/src/client/app/ch/tags/channel.tag
@@ -229,7 +229,7 @@
 
 	</style>
 	<script lang="typescript">
-		import getAcct from '../../../../common/user/get-acct';
+		import getAcct from '../../../../misc/user/get-acct';
 
 		this.post = this.opts.post;
 		this.form = this.opts.form;
diff --git a/src/client/app/common/scripts/compose-notification.ts b/src/client/app/common/scripts/compose-notification.ts
index 273579cbc6..56fbcb94fc 100644
--- a/src/client/app/common/scripts/compose-notification.ts
+++ b/src/client/app/common/scripts/compose-notification.ts
@@ -1,5 +1,5 @@
-import getPostSummary from '../../../../common/get-post-summary';
-import getReactionEmoji from '../../../../common/get-reaction-emoji';
+import getPostSummary from '../../../../misc/get-post-summary';
+import getReactionEmoji from '../../../../misc/get-reaction-emoji';
 
 type Notification = {
 	title: string;
diff --git a/src/client/app/common/views/components/autocomplete.vue b/src/client/app/common/views/components/autocomplete.vue
index 79bd2ba023..edba470581 100644
--- a/src/client/app/common/views/components/autocomplete.vue
+++ b/src/client/app/common/views/components/autocomplete.vue
@@ -21,7 +21,7 @@
 import Vue from 'vue';
 import * as emojilib from 'emojilib';
 import contains from '../../../common/scripts/contains';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 
 const lib = Object.entries(emojilib.lib).filter((x: any) => {
 	return x[1].category != 'flags';
diff --git a/src/client/app/common/views/components/messaging-room.message.vue b/src/client/app/common/views/components/messaging-room.message.vue
index 91af26bffe..cad6825f38 100644
--- a/src/client/app/common/views/components/messaging-room.message.vue
+++ b/src/client/app/common/views/components/messaging-room.message.vue
@@ -34,7 +34,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 import parse from '../../../../../common/text/parse';
 
 export default Vue.extend({
diff --git a/src/client/app/common/views/components/messaging.vue b/src/client/app/common/views/components/messaging.vue
index 8317c3738a..f6709d02b4 100644
--- a/src/client/app/common/views/components/messaging.vue
+++ b/src/client/app/common/views/components/messaging.vue
@@ -51,7 +51,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	props: {
diff --git a/src/client/app/common/views/components/othello.game.vue b/src/client/app/common/views/components/othello.game.vue
index f08742ad10..aa5798d717 100644
--- a/src/client/app/common/views/components/othello.game.vue
+++ b/src/client/app/common/views/components/othello.game.vue
@@ -43,7 +43,7 @@
 <script lang="ts">
 import Vue from 'vue';
 import * as CRC32 from 'crc-32';
-import Othello, { Color } from '../../../../../common/othello/core';
+import Othello, { Color } from '../../../../../misc/othello/core';
 import { url } from '../../../config';
 
 export default Vue.extend({
diff --git a/src/client/app/common/views/components/othello.room.vue b/src/client/app/common/views/components/othello.room.vue
index a32be6b74f..eb1d3a0c6c 100644
--- a/src/client/app/common/views/components/othello.room.vue
+++ b/src/client/app/common/views/components/othello.room.vue
@@ -94,7 +94,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import * as maps from '../../../../../common/othello/maps';
+import * as maps from '../../../../../misc/othello/maps';
 
 export default Vue.extend({
 	props: ['game', 'connection'],
diff --git a/src/client/app/common/views/components/post-html.ts b/src/client/app/common/views/components/post-html.ts
index c5c3b72758..5670ce036a 100644
--- a/src/client/app/common/views/components/post-html.ts
+++ b/src/client/app/common/views/components/post-html.ts
@@ -1,7 +1,7 @@
 import Vue from 'vue';
 import * as emojilib from 'emojilib';
 import parse from '../../../../../common/text/parse';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 import { url } from '../../../config';
 import MkUrl from './url.vue';
 
diff --git a/src/client/app/common/views/components/welcome-timeline.vue b/src/client/app/common/views/components/welcome-timeline.vue
index 09b090bdc1..036a77b1ce 100644
--- a/src/client/app/common/views/components/welcome-timeline.vue
+++ b/src/client/app/common/views/components/welcome-timeline.vue
@@ -24,7 +24,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	data() {
diff --git a/src/client/app/desktop/views/components/friends-maker.vue b/src/client/app/desktop/views/components/friends-maker.vue
index fd9914b152..68ecc6ad46 100644
--- a/src/client/app/desktop/views/components/friends-maker.vue
+++ b/src/client/app/desktop/views/components/friends-maker.vue
@@ -22,7 +22,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	data() {
diff --git a/src/client/app/desktop/views/components/messaging-room-window.vue b/src/client/app/desktop/views/components/messaging-room-window.vue
index 3735267811..6106422046 100644
--- a/src/client/app/desktop/views/components/messaging-room-window.vue
+++ b/src/client/app/desktop/views/components/messaging-room-window.vue
@@ -8,7 +8,7 @@
 <script lang="ts">
 import Vue from 'vue';
 import { url } from '../../../config';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	props: ['user'],
diff --git a/src/client/app/desktop/views/components/notifications.vue b/src/client/app/desktop/views/components/notifications.vue
index 5e6db08c12..79b16d048d 100644
--- a/src/client/app/desktop/views/components/notifications.vue
+++ b/src/client/app/desktop/views/components/notifications.vue
@@ -102,8 +102,8 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getAcct from '../../../../../common/user/get-acct';
-import getPostSummary from '../../../../../common/get-post-summary';
+import getAcct from '../../../../../misc/user/get-acct';
+import getPostSummary from '../../../../../misc/get-post-summary';
 
 export default Vue.extend({
 	data() {
diff --git a/src/client/app/desktop/views/components/post-detail.sub.vue b/src/client/app/desktop/views/components/post-detail.sub.vue
index 1d5649cf92..6fc569adaf 100644
--- a/src/client/app/desktop/views/components/post-detail.sub.vue
+++ b/src/client/app/desktop/views/components/post-detail.sub.vue
@@ -28,7 +28,7 @@
 <script lang="ts">
 import Vue from 'vue';
 import dateStringify from '../../../common/scripts/date-stringify';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	props: ['post'],
diff --git a/src/client/app/desktop/views/components/post-detail.vue b/src/client/app/desktop/views/components/post-detail.vue
index d6481e13d0..309c88e702 100644
--- a/src/client/app/desktop/views/components/post-detail.vue
+++ b/src/client/app/desktop/views/components/post-detail.vue
@@ -78,7 +78,7 @@
 <script lang="ts">
 import Vue from 'vue';
 import dateStringify from '../../../common/scripts/date-stringify';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 import parse from '../../../../../common/text/parse';
 
 import MkPostFormWindow from './post-form-window.vue';
diff --git a/src/client/app/desktop/views/components/post-preview.vue b/src/client/app/desktop/views/components/post-preview.vue
index 0ac3223be2..eb62e4a634 100644
--- a/src/client/app/desktop/views/components/post-preview.vue
+++ b/src/client/app/desktop/views/components/post-preview.vue
@@ -21,7 +21,7 @@
 <script lang="ts">
 import Vue from 'vue';
 import dateStringify from '../../../common/scripts/date-stringify';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	props: ['post'],
diff --git a/src/client/app/desktop/views/components/posts.post.sub.vue b/src/client/app/desktop/views/components/posts.post.sub.vue
index 65d3017d3d..d3af0fef6a 100644
--- a/src/client/app/desktop/views/components/posts.post.sub.vue
+++ b/src/client/app/desktop/views/components/posts.post.sub.vue
@@ -21,7 +21,7 @@
 <script lang="ts">
 import Vue from 'vue';
 import dateStringify from '../../../common/scripts/date-stringify';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	props: ['post'],
diff --git a/src/client/app/desktop/views/components/posts.post.vue b/src/client/app/desktop/views/components/posts.post.vue
index c31e28d67f..1325e3e4f9 100644
--- a/src/client/app/desktop/views/components/posts.post.vue
+++ b/src/client/app/desktop/views/components/posts.post.vue
@@ -85,7 +85,7 @@
 <script lang="ts">
 import Vue from 'vue';
 import dateStringify from '../../../common/scripts/date-stringify';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 import parse from '../../../../../common/text/parse';
 
 import MkPostFormWindow from './post-form-window.vue';
diff --git a/src/client/app/desktop/views/components/settings.mute.vue b/src/client/app/desktop/views/components/settings.mute.vue
index a8dfe10604..ce8f4b2737 100644
--- a/src/client/app/desktop/views/components/settings.mute.vue
+++ b/src/client/app/desktop/views/components/settings.mute.vue
@@ -13,7 +13,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	data() {
diff --git a/src/client/app/desktop/views/components/user-preview.vue b/src/client/app/desktop/views/components/user-preview.vue
index 8c86b2efe8..595926a819 100644
--- a/src/client/app/desktop/views/components/user-preview.vue
+++ b/src/client/app/desktop/views/components/user-preview.vue
@@ -29,8 +29,8 @@
 <script lang="ts">
 import Vue from 'vue';
 import * as anime from 'animejs';
-import getAcct from '../../../../../common/user/get-acct';
-import parseAcct from '../../../../../common/user/parse-acct';
+import getAcct from '../../../../../misc/user/get-acct';
+import parseAcct from '../../../../../misc/user/parse-acct';
 
 export default Vue.extend({
 	props: {
diff --git a/src/client/app/desktop/views/components/users-list.item.vue b/src/client/app/desktop/views/components/users-list.item.vue
index d2bfc117da..1c40c247ba 100644
--- a/src/client/app/desktop/views/components/users-list.item.vue
+++ b/src/client/app/desktop/views/components/users-list.item.vue
@@ -19,7 +19,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	props: ['user'],
diff --git a/src/client/app/desktop/views/pages/home.vue b/src/client/app/desktop/views/pages/home.vue
index 69e134f79f..fa7c19510b 100644
--- a/src/client/app/desktop/views/pages/home.vue
+++ b/src/client/app/desktop/views/pages/home.vue
@@ -7,7 +7,7 @@
 <script lang="ts">
 import Vue from 'vue';
 import Progress from '../../../common/scripts/loading';
-import getPostSummary from '../../../../../common/get-post-summary';
+import getPostSummary from '../../../../../misc/get-post-summary';
 
 export default Vue.extend({
 	props: {
diff --git a/src/client/app/desktop/views/pages/messaging-room.vue b/src/client/app/desktop/views/pages/messaging-room.vue
index 0cab1e0d10..244b0c9047 100644
--- a/src/client/app/desktop/views/pages/messaging-room.vue
+++ b/src/client/app/desktop/views/pages/messaging-room.vue
@@ -7,7 +7,7 @@
 <script lang="ts">
 import Vue from 'vue';
 import Progress from '../../../common/scripts/loading';
-import parseAcct from '../../../../../common/user/parse-acct';
+import parseAcct from '../../../../../misc/user/parse-acct';
 
 export default Vue.extend({
 	data() {
diff --git a/src/client/app/desktop/views/pages/user/user.followers-you-know.vue b/src/client/app/desktop/views/pages/user/user.followers-you-know.vue
index d0dab6c3df..e898b62a0c 100644
--- a/src/client/app/desktop/views/pages/user/user.followers-you-know.vue
+++ b/src/client/app/desktop/views/pages/user/user.followers-you-know.vue
@@ -13,7 +13,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getAcct from '../../../../../../common/user/get-acct';
+import getAcct from '../../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	props: ['user'],
diff --git a/src/client/app/desktop/views/pages/user/user.friends.vue b/src/client/app/desktop/views/pages/user/user.friends.vue
index 3ec30fb438..b13eb528ac 100644
--- a/src/client/app/desktop/views/pages/user/user.friends.vue
+++ b/src/client/app/desktop/views/pages/user/user.friends.vue
@@ -20,7 +20,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getAcct from '../../../../../../common/user/get-acct';
+import getAcct from '../../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	props: ['user'],
diff --git a/src/client/app/desktop/views/pages/user/user.header.vue b/src/client/app/desktop/views/pages/user/user.header.vue
index 54f431fd2e..32e425f86d 100644
--- a/src/client/app/desktop/views/pages/user/user.header.vue
+++ b/src/client/app/desktop/views/pages/user/user.header.vue
@@ -22,7 +22,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getAcct from '../../../../../../common/user/get-acct';
+import getAcct from '../../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	props: ['user'],
diff --git a/src/client/app/desktop/views/pages/user/user.vue b/src/client/app/desktop/views/pages/user/user.vue
index 67cef93269..6e68171a67 100644
--- a/src/client/app/desktop/views/pages/user/user.vue
+++ b/src/client/app/desktop/views/pages/user/user.vue
@@ -9,7 +9,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import parseAcct from '../../../../../../common/user/parse-acct';
+import parseAcct from '../../../../../../misc/user/parse-acct';
 import Progress from '../../../../common/scripts/loading';
 import XHeader from './user.header.vue';
 import XHome from './user.home.vue';
diff --git a/src/client/app/desktop/views/pages/welcome.vue b/src/client/app/desktop/views/pages/welcome.vue
index 34c28854b1..93bb59765c 100644
--- a/src/client/app/desktop/views/pages/welcome.vue
+++ b/src/client/app/desktop/views/pages/welcome.vue
@@ -43,7 +43,7 @@
 <script lang="ts">
 import Vue from 'vue';
 import { docsUrl, copyright, lang } from '../../../config';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 
 const shares = [
 	'Everything!',
diff --git a/src/client/app/desktop/views/widgets/channel.channel.post.vue b/src/client/app/desktop/views/widgets/channel.channel.post.vue
index 433f9a00aa..255d9a5e67 100644
--- a/src/client/app/desktop/views/widgets/channel.channel.post.vue
+++ b/src/client/app/desktop/views/widgets/channel.channel.post.vue
@@ -19,7 +19,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	props: ['post'],
diff --git a/src/client/app/desktop/views/widgets/polls.vue b/src/client/app/desktop/views/widgets/polls.vue
index e5db34fc7a..fd242a04bf 100644
--- a/src/client/app/desktop/views/widgets/polls.vue
+++ b/src/client/app/desktop/views/widgets/polls.vue
@@ -16,7 +16,7 @@
 
 <script lang="ts">
 import define from '../../../common/define-widget';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 
 export default define({
 	name: 'polls',
diff --git a/src/client/app/desktop/views/widgets/trends.vue b/src/client/app/desktop/views/widgets/trends.vue
index 77779787ee..6b22c123be 100644
--- a/src/client/app/desktop/views/widgets/trends.vue
+++ b/src/client/app/desktop/views/widgets/trends.vue
@@ -15,7 +15,7 @@
 
 <script lang="ts">
 import define from '../../../common/define-widget';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 
 export default define({
 	name: 'trends',
diff --git a/src/client/app/desktop/views/widgets/users.vue b/src/client/app/desktop/views/widgets/users.vue
index 7b89441126..102739bd0b 100644
--- a/src/client/app/desktop/views/widgets/users.vue
+++ b/src/client/app/desktop/views/widgets/users.vue
@@ -23,7 +23,7 @@
 
 <script lang="ts">
 import define from '../../../common/define-widget';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 
 const limit = 3;
 
diff --git a/src/client/app/mobile/api/post.ts b/src/client/app/mobile/api/post.ts
index 841103fee1..8090bbef28 100644
--- a/src/client/app/mobile/api/post.ts
+++ b/src/client/app/mobile/api/post.ts
@@ -1,6 +1,6 @@
 import PostForm from '../views/components/post-form.vue';
 //import RepostForm from '../views/components/repost-form.vue';
-import getPostSummary from '../../../../common/get-post-summary';
+import getPostSummary from '../../../../misc/get-post-summary';
 
 export default (os) => (opts) => {
 	const o = opts || {};
diff --git a/src/client/app/mobile/views/components/notification-preview.vue b/src/client/app/mobile/views/components/notification-preview.vue
index fce9ed82f9..2a06d399c8 100644
--- a/src/client/app/mobile/views/components/notification-preview.vue
+++ b/src/client/app/mobile/views/components/notification-preview.vue
@@ -59,7 +59,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getPostSummary from '../../../../../common/get-post-summary';
+import getPostSummary from '../../../../../misc/get-post-summary';
 
 export default Vue.extend({
 	props: ['notification'],
diff --git a/src/client/app/mobile/views/components/notification.vue b/src/client/app/mobile/views/components/notification.vue
index e221fb3ac4..93b1e84166 100644
--- a/src/client/app/mobile/views/components/notification.vue
+++ b/src/client/app/mobile/views/components/notification.vue
@@ -78,8 +78,8 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getPostSummary from '../../../../../common/get-post-summary';
-import getAcct from '../../../../../common/user/get-acct';
+import getPostSummary from '../../../../../misc/get-post-summary';
+import getAcct from '../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	props: ['notification'],
diff --git a/src/client/app/mobile/views/components/post-card.vue b/src/client/app/mobile/views/components/post-card.vue
index 10dfd92415..3f5beb9e0f 100644
--- a/src/client/app/mobile/views/components/post-card.vue
+++ b/src/client/app/mobile/views/components/post-card.vue
@@ -14,8 +14,8 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import summary from '../../../../../common/get-post-summary';
-import getAcct from '../../../../../common/user/get-acct';
+import summary from '../../../../../misc/get-post-summary';
+import getAcct from '../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	props: ['post'],
diff --git a/src/client/app/mobile/views/components/post-detail.sub.vue b/src/client/app/mobile/views/components/post-detail.sub.vue
index db7567834a..1fca0881d5 100644
--- a/src/client/app/mobile/views/components/post-detail.sub.vue
+++ b/src/client/app/mobile/views/components/post-detail.sub.vue
@@ -20,7 +20,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	props: ['post'],
diff --git a/src/client/app/mobile/views/components/post-detail.vue b/src/client/app/mobile/views/components/post-detail.vue
index 0a4e36fc60..a8ebb3b01b 100644
--- a/src/client/app/mobile/views/components/post-detail.vue
+++ b/src/client/app/mobile/views/components/post-detail.vue
@@ -80,7 +80,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 import parse from '../../../../../common/text/parse';
 
 import MkPostMenu from '../../../common/views/components/post-menu.vue';
diff --git a/src/client/app/mobile/views/components/post-preview.vue b/src/client/app/mobile/views/components/post-preview.vue
index a6141dc8e3..05dd4a004f 100644
--- a/src/client/app/mobile/views/components/post-preview.vue
+++ b/src/client/app/mobile/views/components/post-preview.vue
@@ -20,7 +20,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	props: ['post'],
diff --git a/src/client/app/mobile/views/components/post.sub.vue b/src/client/app/mobile/views/components/post.sub.vue
index adf444a2d6..cbd2fad889 100644
--- a/src/client/app/mobile/views/components/post.sub.vue
+++ b/src/client/app/mobile/views/components/post.sub.vue
@@ -20,7 +20,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	props: ['post'],
diff --git a/src/client/app/mobile/views/components/post.vue b/src/client/app/mobile/views/components/post.vue
index f4f845b49a..6cf24ed6ae 100644
--- a/src/client/app/mobile/views/components/post.vue
+++ b/src/client/app/mobile/views/components/post.vue
@@ -77,7 +77,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 import parse from '../../../../../common/text/parse';
 
 import MkPostMenu from '../../../common/views/components/post-menu.vue';
diff --git a/src/client/app/mobile/views/components/user-card.vue b/src/client/app/mobile/views/components/user-card.vue
index ffa1100519..fb1b12ce58 100644
--- a/src/client/app/mobile/views/components/user-card.vue
+++ b/src/client/app/mobile/views/components/user-card.vue
@@ -13,7 +13,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	props: ['user'],
diff --git a/src/client/app/mobile/views/components/user-preview.vue b/src/client/app/mobile/views/components/user-preview.vue
index e51e4353d3..4bb8303815 100644
--- a/src/client/app/mobile/views/components/user-preview.vue
+++ b/src/client/app/mobile/views/components/user-preview.vue
@@ -17,7 +17,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	props: ['user'],
diff --git a/src/client/app/mobile/views/pages/followers.vue b/src/client/app/mobile/views/pages/followers.vue
index 8c058eb4e6..28e866efb6 100644
--- a/src/client/app/mobile/views/pages/followers.vue
+++ b/src/client/app/mobile/views/pages/followers.vue
@@ -19,7 +19,7 @@
 <script lang="ts">
 import Vue from 'vue';
 import Progress from '../../../common/scripts/loading';
-import parseAcct from '../../../../../common/user/parse-acct';
+import parseAcct from '../../../../../misc/user/parse-acct';
 
 export default Vue.extend({
 	data() {
diff --git a/src/client/app/mobile/views/pages/following.vue b/src/client/app/mobile/views/pages/following.vue
index a73c9d1710..7ee3b86287 100644
--- a/src/client/app/mobile/views/pages/following.vue
+++ b/src/client/app/mobile/views/pages/following.vue
@@ -19,7 +19,7 @@
 <script lang="ts">
 import Vue from 'vue';
 import Progress from '../../../common/scripts/loading';
-import parseAcct from '../../../../../common/user/parse-acct';
+import parseAcct from '../../../../../misc/user/parse-acct';
 
 export default Vue.extend({
 	data() {
diff --git a/src/client/app/mobile/views/pages/home.vue b/src/client/app/mobile/views/pages/home.vue
index f1f65f90c3..f76fdbe19b 100644
--- a/src/client/app/mobile/views/pages/home.vue
+++ b/src/client/app/mobile/views/pages/home.vue
@@ -64,7 +64,7 @@ import Vue from 'vue';
 import * as XDraggable from 'vuedraggable';
 import * as uuid from 'uuid';
 import Progress from '../../../common/scripts/loading';
-import getPostSummary from '../../../../../common/get-post-summary';
+import getPostSummary from '../../../../../misc/get-post-summary';
 
 export default Vue.extend({
 	components: {
diff --git a/src/client/app/mobile/views/pages/messaging-room.vue b/src/client/app/mobile/views/pages/messaging-room.vue
index 193c41179c..400f5016e1 100644
--- a/src/client/app/mobile/views/pages/messaging-room.vue
+++ b/src/client/app/mobile/views/pages/messaging-room.vue
@@ -10,7 +10,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import parseAcct from '../../../../../common/user/parse-acct';
+import parseAcct from '../../../../../misc/user/parse-acct';
 
 export default Vue.extend({
 	data() {
diff --git a/src/client/app/mobile/views/pages/messaging.vue b/src/client/app/mobile/views/pages/messaging.vue
index e92068eda5..7ded67cdf3 100644
--- a/src/client/app/mobile/views/pages/messaging.vue
+++ b/src/client/app/mobile/views/pages/messaging.vue
@@ -7,7 +7,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getAcct from '../../../../../common/user/get-acct';
+import getAcct from '../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	mounted() {
diff --git a/src/client/app/mobile/views/pages/user.vue b/src/client/app/mobile/views/pages/user.vue
index 114decb8e4..01eb408e6d 100644
--- a/src/client/app/mobile/views/pages/user.vue
+++ b/src/client/app/mobile/views/pages/user.vue
@@ -60,8 +60,8 @@
 <script lang="ts">
 import Vue from 'vue';
 import * as age from 's-age';
-import getAcct from '../../../../../common/user/get-acct';
-import getAcct from '../../../../../common/user/parse-acct';
+import getAcct from '../../../../../misc/user/get-acct';
+import getAcct from '../../../../../misc/user/parse-acct';
 import Progress from '../../../common/scripts/loading';
 import XHome from './user/home.vue';
 
diff --git a/src/client/app/mobile/views/pages/user/home.followers-you-know.vue b/src/client/app/mobile/views/pages/user/home.followers-you-know.vue
index 8c84d2dbba..8dc4fbb855 100644
--- a/src/client/app/mobile/views/pages/user/home.followers-you-know.vue
+++ b/src/client/app/mobile/views/pages/user/home.followers-you-know.vue
@@ -12,7 +12,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getAcct from '../../../../../../common/user/get-acct';
+import getAcct from '../../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	props: ['user'],
diff --git a/src/client/app/mobile/views/pages/user/home.photos.vue b/src/client/app/mobile/views/pages/user/home.photos.vue
index f703f8a740..cc35270370 100644
--- a/src/client/app/mobile/views/pages/user/home.photos.vue
+++ b/src/client/app/mobile/views/pages/user/home.photos.vue
@@ -14,7 +14,7 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import getAcct from '../../../../../../common/user/get-acct';
+import getAcct from '../../../../../../misc/user/get-acct';
 
 export default Vue.extend({
 	props: ['user'],
diff --git a/src/common/drive/add-file.ts b/src/common/drive/add-file.ts
index 52a7713dd9..af85a23d23 100644
--- a/src/common/drive/add-file.ts
+++ b/src/common/drive/add-file.ts
@@ -14,7 +14,7 @@ import DriveFile, { getGridFSBucket } from '../../models/drive-file';
 import DriveFolder from '../../models/drive-folder';
 import { pack } from '../../models/drive-file';
 import event, { publishDriveStream } from '../event';
-import getAcct from '../user/get-acct';
+import getAcct from '../../misc/user/get-acct';
 import config from '../../conf';
 
 const gm = _gm.subClass({
diff --git a/src/common/drive/upload-from-url.ts b/src/common/drive/upload-from-url.ts
new file mode 100644
index 0000000000..5dd9695936
--- /dev/null
+++ b/src/common/drive/upload-from-url.ts
@@ -0,0 +1,46 @@
+import * as URL from 'url';
+import { IDriveFile, validateFileName } from '../../models/drive-file';
+import create from './add-file';
+import * as debug from 'debug';
+import * as tmp from 'tmp';
+import * as fs from 'fs';
+import * as request from 'request';
+
+const log = debug('misskey:common:drive:upload_from_url');
+
+export default async (url, user, folderId = null): Promise<IDriveFile> => {
+	let name = URL.parse(url).pathname.split('/').pop();
+	if (!validateFileName(name)) {
+		name = null;
+	}
+
+	// Create temp file
+	const path = await new Promise((res: (string) => void, rej) => {
+		tmp.file((e, path) => {
+			if (e) return rej(e);
+			res(path);
+		});
+	});
+
+	// write content at URL to temp file
+	await new Promise((res, rej) => {
+		const writable = fs.createWriteStream(path);
+		request(url)
+			.on('error', rej)
+			.on('end', () => {
+				writable.close();
+				res(path);
+			})
+			.pipe(writable)
+			.on('error', rej);
+	});
+
+	const driveFile = await create(user, path, name, null, folderId);
+
+	// clean-up
+	fs.unlink(path, (e) => {
+		if (e) log(e.stack);
+	});
+
+	return driveFile;
+};
diff --git a/src/common/drive/upload_from_url.ts b/src/common/drive/upload_from_url.ts
deleted file mode 100644
index 5dd9695936..0000000000
--- a/src/common/drive/upload_from_url.ts
+++ /dev/null
@@ -1,46 +0,0 @@
-import * as URL from 'url';
-import { IDriveFile, validateFileName } from '../../models/drive-file';
-import create from './add-file';
-import * as debug from 'debug';
-import * as tmp from 'tmp';
-import * as fs from 'fs';
-import * as request from 'request';
-
-const log = debug('misskey:common:drive:upload_from_url');
-
-export default async (url, user, folderId = null): Promise<IDriveFile> => {
-	let name = URL.parse(url).pathname.split('/').pop();
-	if (!validateFileName(name)) {
-		name = null;
-	}
-
-	// Create temp file
-	const path = await new Promise((res: (string) => void, rej) => {
-		tmp.file((e, path) => {
-			if (e) return rej(e);
-			res(path);
-		});
-	});
-
-	// write content at URL to temp file
-	await new Promise((res, rej) => {
-		const writable = fs.createWriteStream(path);
-		request(url)
-			.on('error', rej)
-			.on('end', () => {
-				writable.close();
-				res(path);
-			})
-			.pipe(writable)
-			.on('error', rej);
-	});
-
-	const driveFile = await create(user, path, name, null, folderId);
-
-	// clean-up
-	fs.unlink(path, (e) => {
-		if (e) log(e.stack);
-	});
-
-	return driveFile;
-};
diff --git a/src/common/get-notification-summary.ts b/src/common/get-notification-summary.ts
deleted file mode 100644
index 03db722c84..0000000000
--- a/src/common/get-notification-summary.ts
+++ /dev/null
@@ -1,27 +0,0 @@
-import getPostSummary from './get-post-summary';
-import getReactionEmoji from './get-reaction-emoji';
-
-/**
- * 通知を表す文字列を取得します。
- * @param notification 通知
- */
-export default function(notification: any): string {
-	switch (notification.type) {
-		case 'follow':
-			return `${notification.user.name}にフォローされました`;
-		case 'mention':
-			return `言及されました:\n${notification.user.name}「${getPostSummary(notification.post)}」`;
-		case 'reply':
-			return `返信されました:\n${notification.user.name}「${getPostSummary(notification.post)}」`;
-		case 'repost':
-			return `Repostされました:\n${notification.user.name}「${getPostSummary(notification.post)}」`;
-		case 'quote':
-			return `引用されました:\n${notification.user.name}「${getPostSummary(notification.post)}」`;
-		case 'reaction':
-			return `リアクションされました:\n${notification.user.name} <${getReactionEmoji(notification.reaction)}>「${getPostSummary(notification.post)}」`;
-		case 'poll_vote':
-			return `投票されました:\n${notification.user.name}「${getPostSummary(notification.post)}」`;
-		default:
-			return `<不明な通知タイプ: ${notification.type}>`;
-	}
-}
diff --git a/src/common/get-post-summary.ts b/src/common/get-post-summary.ts
deleted file mode 100644
index 8d0033064f..0000000000
--- a/src/common/get-post-summary.ts
+++ /dev/null
@@ -1,45 +0,0 @@
-/**
- * 投稿を表す文字列を取得します。
- * @param {*} post 投稿
- */
-const summarize = (post: any): string => {
-	let summary = '';
-
-	// チャンネル
-	summary += post.channel ? `${post.channel.title}:` : '';
-
-	// 本文
-	summary += post.text ? post.text : '';
-
-	// メディアが添付されているとき
-	if (post.media) {
-		summary += ` (${post.media.length}つのメディア)`;
-	}
-
-	// 投票が添付されているとき
-	if (post.poll) {
-		summary += ' (投票)';
-	}
-
-	// 返信のとき
-	if (post.replyId) {
-		if (post.reply) {
-			summary += ` RE: ${summarize(post.reply)}`;
-		} else {
-			summary += ' RE: ...';
-		}
-	}
-
-	// Repostのとき
-	if (post.repostId) {
-		if (post.repost) {
-			summary += ` RP: ${summarize(post.repost)}`;
-		} else {
-			summary += ' RP: ...';
-		}
-	}
-
-	return summary.trim();
-};
-
-export default summarize;
diff --git a/src/common/get-reaction-emoji.ts b/src/common/get-reaction-emoji.ts
deleted file mode 100644
index c661205379..0000000000
--- a/src/common/get-reaction-emoji.ts
+++ /dev/null
@@ -1,14 +0,0 @@
-export default function(reaction: string): string {
-	switch (reaction) {
-		case 'like': return '👍';
-		case 'love': return '❤️';
-		case 'laugh': return '😆';
-		case 'hmm': return '🤔';
-		case 'surprise': return '😮';
-		case 'congrats': return '🎉';
-		case 'angry': return '💢';
-		case 'confused': return '😥';
-		case 'pudding': return '🍮';
-		default: return '';
-	}
-}
diff --git a/src/common/othello/ai/back.ts b/src/common/othello/ai/back.ts
deleted file mode 100644
index 0950adaa9f..0000000000
--- a/src/common/othello/ai/back.ts
+++ /dev/null
@@ -1,376 +0,0 @@
-/**
- * -AI-
- * Botのバックエンド(思考を担当)
- *
- * 対話と思考を同じプロセスで行うと、思考時間が長引いたときにストリームから
- * 切断されてしまうので、別々のプロセスで行うようにします
- */
-
-import * as request from 'request-promise-native';
-import Othello, { Color } from '../core';
-import conf from '../../../conf';
-
-let game;
-let form;
-
-/**
- * BotアカウントのユーザーID
- */
-const id = conf.othello_ai.id;
-
-/**
- * BotアカウントのAPIキー
- */
-const i = conf.othello_ai.i;
-
-let post;
-
-process.on('message', async msg => {
-	// 親プロセスからデータをもらう
-	if (msg.type == '_init_') {
-		game = msg.game;
-		form = msg.form;
-	}
-
-	// フォームが更新されたとき
-	if (msg.type == 'update-form') {
-		form.find(i => i.id == msg.body.id).value = msg.body.value;
-	}
-
-	// ゲームが始まったとき
-	if (msg.type == 'started') {
-		onGameStarted(msg.body);
-
-		//#region TLに投稿する
-		const game = msg.body;
-		const url = `${conf.url}/othello/${game.id}`;
-		const user = game.user1Id == id ? game.user2 : game.user1;
-		const isSettai = form[0].value === 0;
-		const text = isSettai
-			? `?[${user.name}](${conf.url}/@${user.username})さんの接待を始めました！`
-			: `対局を?[${user.name}](${conf.url}/@${user.username})さんと始めました！ (強さ${form[0].value})`;
-
-		const res = await request.post(`${conf.api_url}/posts/create`, {
-			json: { i,
-				text: `${text}\n→[観戦する](${url})`
-			}
-		});
-
-		post = res.createdPost;
-		//#endregion
-	}
-
-	// ゲームが終了したとき
-	if (msg.type == 'ended') {
-		// ストリームから切断
-		process.send({
-			type: 'close'
-		});
-
-		//#region TLに投稿する
-		const user = game.user1Id == id ? game.user2 : game.user1;
-		const isSettai = form[0].value === 0;
-		const text = isSettai
-			? msg.body.winnerId === null
-				? `?[${user.name}](${conf.url}/@${user.username})さんに接待で引き分けました...`
-				: msg.body.winnerId == id
-					? `?[${user.name}](${conf.url}/@${user.username})さんに接待で勝ってしまいました...`
-					: `?[${user.name}](${conf.url}/@${user.username})さんに接待で負けてあげました♪`
-			: msg.body.winnerId === null
-				? `?[${user.name}](${conf.url}/@${user.username})さんと引き分けました～`
-				: msg.body.winnerId == id
-					? `?[${user.name}](${conf.url}/@${user.username})さんに勝ちました♪`
-					: `?[${user.name}](${conf.url}/@${user.username})さんに負けました...`;
-
-		await request.post(`${conf.api_url}/posts/create`, {
-			json: { i,
-				repostId: post.id,
-				text: text
-			}
-		});
-		//#endregion
-
-		process.exit();
-	}
-
-	// 打たれたとき
-	if (msg.type == 'set') {
-		onSet(msg.body);
-	}
-});
-
-let o: Othello;
-let botColor: Color;
-
-// 各マスの強さ
-let cellWeights;
-
-/**
- * ゲーム開始時
- * @param g ゲーム情報
- */
-function onGameStarted(g) {
-	game = g;
-
-	// オセロエンジン初期化
-	o = new Othello(game.settings.map, {
-		isLlotheo: game.settings.isLlotheo,
-		canPutEverywhere: game.settings.canPutEverywhere,
-		loopedBoard: game.settings.loopedBoard
-	});
-
-	// 各マスの価値を計算しておく
-	cellWeights = o.map.map((pix, i) => {
-		if (pix == 'null') return 0;
-		const [x, y] = o.transformPosToXy(i);
-		let count = 0;
-		const get = (x, y) => {
-			if (x < 0 || y < 0 || x >= o.mapWidth || y >= o.mapHeight) return 'null';
-			return o.mapDataGet(o.transformXyToPos(x, y));
-		};
-
-		if (get(x    , y - 1) == 'null') count++;
-		if (get(x + 1, y - 1) == 'null') count++;
-		if (get(x + 1, y    ) == 'null') count++;
-		if (get(x + 1, y + 1) == 'null') count++;
-		if (get(x    , y + 1) == 'null') count++;
-		if (get(x - 1, y + 1) == 'null') count++;
-		if (get(x - 1, y    ) == 'null') count++;
-		if (get(x - 1, y - 1) == 'null') count++;
-		//return Math.pow(count, 3);
-		return count >= 4 ? 1 : 0;
-	});
-
-	botColor = game.user1Id == id && game.black == 1 || game.user2Id == id && game.black == 2;
-
-	if (botColor) {
-		think();
-	}
-}
-
-function onSet(x) {
-	o.put(x.color, x.pos);
-
-	if (x.next === botColor) {
-		think();
-	}
-}
-
-const db = {};
-
-function think() {
-	console.log('Thinking...');
-	console.time('think');
-
-	const isSettai = form[0].value === 0;
-
-	// 接待モードのときは、全力(5手先読みくらい)で負けるようにする
-	const maxDepth = isSettai ? 5 : form[0].value;
-
-	/**
-	 * Botにとってある局面がどれだけ有利か取得する
-	 */
-	function staticEval() {
-		let score = o.canPutSomewhere(botColor).length;
-
-		cellWeights.forEach((weight, i) => {
-			// 係数
-			const coefficient = 30;
-			weight = weight * coefficient;
-
-			const stone = o.board[i];
-			if (stone === botColor) {
-				// TODO: 価値のあるマスに設置されている自分の石に縦か横に接するマスは価値があると判断する
-				score += weight;
-			} else if (stone !== null) {
-				score -= weight;
-			}
-		});
-
-		// ロセオならスコアを反転
-		if (game.settings.isLlotheo) score = -score;
-
-		// 接待ならスコアを反転
-		if (isSettai) score = -score;
-
-		return score;
-	}
-
-	/**
-	 * αβ法での探索
-	 */
-	const dive = (pos: number, alpha = -Infinity, beta = Infinity, depth = 0): number => {
-		// 試し打ち
-		o.put(o.turn, pos);
-
-		const key = o.board.toString();
-		let cache = db[key];
-		if (cache) {
-			if (alpha >= cache.upper) {
-				o.undo();
-				return cache.upper;
-			}
-			if (beta <= cache.lower) {
-				o.undo();
-				return cache.lower;
-			}
-			alpha = Math.max(alpha, cache.lower);
-			beta = Math.min(beta, cache.upper);
-		} else {
-			cache = {
-				upper: Infinity,
-				lower: -Infinity
-			};
-		}
-
-		const isBotTurn = o.turn === botColor;
-
-		// 勝った
-		if (o.turn === null) {
-			const winner = o.winner;
-
-			// 勝つことによる基本スコア
-			const base = 10000;
-
-			let score;
-
-			if (game.settings.isLlotheo) {
-				// 勝ちは勝ちでも、より自分の石を少なくした方が美しい勝ちだと判定する
-				score = o.winner ? base - (o.blackCount * 100) : base - (o.whiteCount * 100);
-			} else {
-				// 勝ちは勝ちでも、より相手の石を少なくした方が美しい勝ちだと判定する
-				score = o.winner ? base + (o.blackCount * 100) : base + (o.whiteCount * 100);
-			}
-
-			// 巻き戻し
-			o.undo();
-
-			// 接待なら自分が負けた方が高スコア
-			return isSettai
-				? winner !== botColor ? score : -score
-				: winner === botColor ? score : -score;
-		}
-
-		if (depth === maxDepth) {
-			// 静的に評価
-			const score = staticEval();
-
-			// 巻き戻し
-			o.undo();
-
-			return score;
-		} else {
-			const cans = o.canPutSomewhere(o.turn);
-
-			let value = isBotTurn ? -Infinity : Infinity;
-			let a = alpha;
-			let b = beta;
-
-			// 次のターンのプレイヤーにとって最も良い手を取得
-			for (const p of cans) {
-				if (isBotTurn) {
-					const score = dive(p, a, beta, depth + 1);
-					value = Math.max(value, score);
-					a = Math.max(a, value);
-					if (value >= beta) break;
-				} else {
-					const score = dive(p, alpha, b, depth + 1);
-					value = Math.min(value, score);
-					b = Math.min(b, value);
-					if (value <= alpha) break;
-				}
-			}
-
-			// 巻き戻し
-			o.undo();
-
-			if (value <= alpha) {
-				cache.upper = value;
-			} else if (value >= beta) {
-				cache.lower = value;
-			} else {
-				cache.upper = value;
-				cache.lower = value;
-			}
-
-			db[key] = cache;
-
-			return value;
-		}
-	};
-
-	/**
-	 * αβ法での探索(キャッシュ無し)(デバッグ用)
-	 */
-	const dive2 = (pos: number, alpha = -Infinity, beta = Infinity, depth = 0): number => {
-		// 試し打ち
-		o.put(o.turn, pos);
-
-		const isBotTurn = o.turn === botColor;
-
-		// 勝った
-		if (o.turn === null) {
-			const winner = o.winner;
-
-			// 勝つことによる基本スコア
-			const base = 10000;
-
-			let score;
-
-			if (game.settings.isLlotheo) {
-				// 勝ちは勝ちでも、より自分の石を少なくした方が美しい勝ちだと判定する
-				score = o.winner ? base - (o.blackCount * 100) : base - (o.whiteCount * 100);
-			} else {
-				// 勝ちは勝ちでも、より相手の石を少なくした方が美しい勝ちだと判定する
-				score = o.winner ? base + (o.blackCount * 100) : base + (o.whiteCount * 100);
-			}
-
-			// 巻き戻し
-			o.undo();
-
-			// 接待なら自分が負けた方が高スコア
-			return isSettai
-				? winner !== botColor ? score : -score
-				: winner === botColor ? score : -score;
-		}
-
-		if (depth === maxDepth) {
-			// 静的に評価
-			const score = staticEval();
-
-			// 巻き戻し
-			o.undo();
-
-			return score;
-		} else {
-			const cans = o.canPutSomewhere(o.turn);
-
-			// 次のターンのプレイヤーにとって最も良い手を取得
-			for (const p of cans) {
-				if (isBotTurn) {
-					alpha = Math.max(alpha, dive2(p, alpha, beta, depth + 1));
-				} else {
-					beta = Math.min(beta, dive2(p, alpha, beta, depth + 1));
-				}
-				if (alpha >= beta) break;
-			}
-
-			// 巻き戻し
-			o.undo();
-
-			return isBotTurn ? alpha : beta;
-		}
-	};
-
-	const cans = o.canPutSomewhere(botColor);
-	const scores = cans.map(p => dive(p));
-	const pos = cans[scores.indexOf(Math.max(...scores))];
-
-	console.log('Thinked:', pos);
-	console.timeEnd('think');
-
-	process.send({
-		type: 'put',
-		pos
-	});
-}
diff --git a/src/common/othello/ai/front.ts b/src/common/othello/ai/front.ts
deleted file mode 100644
index e5496132f6..0000000000
--- a/src/common/othello/ai/front.ts
+++ /dev/null
@@ -1,233 +0,0 @@
-/**
- * -AI-
- * Botのフロントエンド(ストリームとの対話を担当)
- *
- * 対話と思考を同じプロセスで行うと、思考時間が長引いたときにストリームから
- * 切断されてしまうので、別々のプロセスで行うようにします
- */
-
-import * as childProcess from 'child_process';
-const WebSocket = require('ws');
-import * as ReconnectingWebSocket from 'reconnecting-websocket';
-import * as request from 'request-promise-native';
-import conf from '../../../conf';
-
-// 設定 ////////////////////////////////////////////////////////
-
-/**
- * BotアカウントのAPIキー
- */
-const i = conf.othello_ai.i;
-
-/**
- * BotアカウントのユーザーID
- */
-const id = conf.othello_ai.id;
-
-////////////////////////////////////////////////////////////////
-
-/**
- * ホームストリーム
- */
-const homeStream = new ReconnectingWebSocket(`${conf.ws_url}/?i=${i}`, undefined, {
-	constructor: WebSocket
-});
-
-homeStream.on('open', () => {
-	console.log('home stream opened');
-});
-
-homeStream.on('close', () => {
-	console.log('home stream closed');
-});
-
-homeStream.on('message', message => {
-	const msg = JSON.parse(message.toString());
-
-	// タイムライン上でなんか言われたまたは返信されたとき
-	if (msg.type == 'mention' || msg.type == 'reply') {
-		const post = msg.body;
-
-		if (post.userId == id) return;
-
-		// リアクションする
-		request.post(`${conf.api_url}/posts/reactions/create`, {
-			json: { i,
-				postId: post.id,
-				reaction: 'love'
-			}
-		});
-
-		if (post.text) {
-			if (post.text.indexOf('オセロ') > -1) {
-				request.post(`${conf.api_url}/posts/create`, {
-					json: { i,
-						replyId: post.id,
-						text: '良いですよ～'
-					}
-				});
-
-				invite(post.userId);
-			}
-		}
-	}
-
-	// メッセージでなんか言われたとき
-	if (msg.type == 'messaging_message') {
-		const message = msg.body;
-		if (message.text) {
-			if (message.text.indexOf('オセロ') > -1) {
-				request.post(`${conf.api_url}/messaging/messages/create`, {
-					json: { i,
-						userId: message.userId,
-						text: '良いですよ～'
-					}
-				});
-
-				invite(message.userId);
-			}
-		}
-	}
-});
-
-// ユーザーを対局に誘う
-function invite(userId) {
-	request.post(`${conf.api_url}/othello/match`, {
-		json: { i,
-			userId: userId
-		}
-	});
-}
-
-/**
- * オセロストリーム
- */
-const othelloStream = new ReconnectingWebSocket(`${conf.ws_url}/othello?i=${i}`, undefined, {
-	constructor: WebSocket
-});
-
-othelloStream.on('open', () => {
-	console.log('othello stream opened');
-});
-
-othelloStream.on('close', () => {
-	console.log('othello stream closed');
-});
-
-othelloStream.on('message', message => {
-	const msg = JSON.parse(message.toString());
-
-	// 招待されたとき
-	if (msg.type == 'invited') {
-		onInviteMe(msg.body.parent);
-	}
-
-	// マッチしたとき
-	if (msg.type == 'matched') {
-		gameStart(msg.body);
-	}
-});
-
-/**
- * ゲーム開始
- * @param game ゲーム情報
- */
-function gameStart(game) {
-	// ゲームストリームに接続
-	const gw = new ReconnectingWebSocket(`${conf.ws_url}/othello-game?i=${i}&game=${game.id}`, undefined, {
-		constructor: WebSocket
-	});
-
-	gw.on('open', () => {
-		console.log('othello game stream opened');
-
-		// フォーム
-		const form = [{
-			id: 'strength',
-			type: 'radio',
-			label: '強さ',
-			value: 2,
-			items: [{
-				label: '接待',
-				value: 0
-			}, {
-				label: '弱',
-				value: 1
-			}, {
-				label: '中',
-				value: 2
-			}, {
-				label: '強',
-				value: 3
-			}, {
-				label: '最強',
-				value: 5
-			}]
-		}];
-
-		//#region バックエンドプロセス開始
-		const ai = childProcess.fork(__dirname + '/back.js');
-
-		// バックエンドプロセスに情報を渡す
-		ai.send({
-			type: '_init_',
-			game,
-			form
-		});
-
-		ai.on('message', msg => {
-			if (msg.type == 'put') {
-				gw.send(JSON.stringify({
-					type: 'set',
-					pos: msg.pos
-				}));
-			} else if (msg.type == 'close') {
-				gw.close();
-			}
-		});
-
-		// ゲームストリームから情報が流れてきたらそのままバックエンドプロセスに伝える
-		gw.on('message', message => {
-			const msg = JSON.parse(message.toString());
-			ai.send(msg);
-		});
-		//#endregion
-
-		// フォーム初期化
-		setTimeout(() => {
-			gw.send(JSON.stringify({
-				type: 'init-form',
-				body: form
-			}));
-		}, 1000);
-
-		// どんな設定内容の対局でも受け入れる
-		setTimeout(() => {
-			gw.send(JSON.stringify({
-				type: 'accept'
-			}));
-		}, 2000);
-	});
-
-	gw.on('close', () => {
-		console.log('othello game stream closed');
-	});
-}
-
-/**
- * オセロの対局に招待されたとき
- * @param inviter 誘ってきたユーザー
- */
-async function onInviteMe(inviter) {
-	console.log(`Someone invited me: @${inviter.username}`);
-
-	// 承認
-	const game = await request.post(`${conf.api_url}/othello/match`, {
-		json: {
-			i,
-			userId: inviter.id
-		}
-	});
-
-	gameStart(game);
-}
diff --git a/src/common/othello/ai/index.ts b/src/common/othello/ai/index.ts
deleted file mode 100644
index 5cd1db82da..0000000000
--- a/src/common/othello/ai/index.ts
+++ /dev/null
@@ -1 +0,0 @@
-require('./front');
diff --git a/src/common/othello/core.ts b/src/common/othello/core.ts
deleted file mode 100644
index 217066d375..0000000000
--- a/src/common/othello/core.ts
+++ /dev/null
@@ -1,340 +0,0 @@
-/**
- * true ... 黒
- * false ... 白
- */
-export type Color = boolean;
-const BLACK = true;
-const WHITE = false;
-
-export type MapPixel = 'null' | 'empty';
-
-export type Options = {
-	isLlotheo: boolean;
-	canPutEverywhere: boolean;
-	loopedBoard: boolean;
-};
-
-export type Undo = {
-	/**
-	 * 色
-	 */
-	color: Color,
-
-	/**
-	 * どこに打ったか
-	 */
-	pos: number;
-
-	/**
-	 * 反転した石の位置の配列
-	 */
-	effects: number[];
-
-	/**
-	 * ターン
-	 */
-	turn: Color;
-};
-
-/**
- * オセロエンジン
- */
-export default class Othello {
-	public map: MapPixel[];
-	public mapWidth: number;
-	public mapHeight: number;
-	public board: Color[];
-	public turn: Color = BLACK;
-	public opts: Options;
-
-	public prevPos = -1;
-	public prevColor: Color = null;
-
-	private logs: Undo[] = [];
-
-	/**
-	 * ゲームを初期化します
-	 */
-	constructor(map: string[], opts: Options) {
-		//#region binds
-		this.put = this.put.bind(this);
-		//#endregion
-
-		//#region Options
-		this.opts = opts;
-		if (this.opts.isLlotheo == null) this.opts.isLlotheo = false;
-		if (this.opts.canPutEverywhere == null) this.opts.canPutEverywhere = false;
-		if (this.opts.loopedBoard == null) this.opts.loopedBoard = false;
-		//#endregion
-
-		//#region Parse map data
-		this.mapWidth = map[0].length;
-		this.mapHeight = map.length;
-		const mapData = map.join('');
-
-		this.board = mapData.split('').map(d => {
-			if (d == '-') return null;
-			if (d == 'b') return BLACK;
-			if (d == 'w') return WHITE;
-			return undefined;
-		});
-
-		this.map = mapData.split('').map(d => {
-			if (d == '-' || d == 'b' || d == 'w') return 'empty';
-			return 'null';
-		});
-		//#endregion
-
-		// ゲームが始まった時点で片方の色の石しかないか、始まった時点で勝敗が決定するようなマップの場合がある
-		if (this.canPutSomewhere(BLACK).length == 0) {
-			if (this.canPutSomewhere(WHITE).length == 0) {
-				this.turn = null;
-			} else {
-				this.turn = WHITE;
-			}
-		}
-	}
-
-	/**
-	 * 黒石の数
-	 */
-	public get blackCount() {
-		return this.board.filter(x => x === BLACK).length;
-	}
-
-	/**
-	 * 白石の数
-	 */
-	public get whiteCount() {
-		return this.board.filter(x => x === WHITE).length;
-	}
-
-	/**
-	 * 黒石の比率
-	 */
-	public get blackP() {
-		if (this.blackCount == 0 && this.whiteCount == 0) return 0;
-		return this.blackCount / (this.blackCount + this.whiteCount);
-	}
-
-	/**
-	 * 白石の比率
-	 */
-	public get whiteP() {
-		if (this.blackCount == 0 && this.whiteCount == 0) return 0;
-		return this.whiteCount / (this.blackCount + this.whiteCount);
-	}
-
-	public transformPosToXy(pos: number): number[] {
-		const x = pos % this.mapWidth;
-		const y = Math.floor(pos / this.mapWidth);
-		return [x, y];
-	}
-
-	public transformXyToPos(x: number, y: number): number {
-		return x + (y * this.mapWidth);
-	}
-
-	/**
-	 * 指定のマスに石を打ちます
-	 * @param color 石の色
-	 * @param pos 位置
-	 */
-	public put(color: Color, pos: number) {
-		this.prevPos = pos;
-		this.prevColor = color;
-
-		this.board[pos] = color;
-
-		// 反転させられる石を取得
-		const effects = this.effects(color, pos);
-
-		// 反転させる
-		for (const pos of effects) {
-			this.board[pos] = color;
-		}
-
-		const turn = this.turn;
-
-		this.logs.push({
-			color,
-			pos,
-			effects,
-			turn
-		});
-
-		this.calcTurn();
-	}
-
-	private calcTurn() {
-		// ターン計算
-		if (this.canPutSomewhere(!this.prevColor).length > 0) {
-			this.turn = !this.prevColor;
-		} else if (this.canPutSomewhere(this.prevColor).length > 0) {
-			this.turn = this.prevColor;
-		} else {
-			this.turn = null;
-		}
-	}
-
-	public undo() {
-		const undo = this.logs.pop();
-		this.prevColor = undo.color;
-		this.prevPos = undo.pos;
-		this.board[undo.pos] = null;
-		for (const pos of undo.effects) {
-			const color = this.board[pos];
-			this.board[pos] = !color;
-		}
-		this.turn = undo.turn;
-	}
-
-	/**
-	 * 指定した位置のマップデータのマスを取得します
-	 * @param pos 位置
-	 */
-	public mapDataGet(pos: number): MapPixel {
-		const [x, y] = this.transformPosToXy(pos);
-		if (x < 0 || y < 0 || x >= this.mapWidth || y >= this.mapHeight) return 'null';
-		return this.map[pos];
-	}
-
-	/**
-	 * 打つことができる場所を取得します
-	 */
-	public canPutSomewhere(color: Color): number[] {
-		const result = [];
-
-		this.board.forEach((x, i) => {
-			if (this.canPut(color, i)) result.push(i);
-		});
-
-		return result;
-	}
-
-	/**
-	 * 指定のマスに石を打つことができるかどうかを取得します
-	 * @param color 自分の色
-	 * @param pos 位置
-	 */
-	public canPut(color: Color, pos: number): boolean {
-		// 既に石が置いてある場所には打てない
-		if (this.board[pos] !== null) return false;
-
-		if (this.opts.canPutEverywhere) {
-			// 挟んでなくても置けるモード
-			return this.mapDataGet(pos) == 'empty';
-		} else {
-			// 相手の石を1つでも反転させられるか
-			return this.effects(color, pos).length !== 0;
-		}
-	}
-
-	/**
-	 * 指定のマスに石を置いた時の、反転させられる石を取得します
-	 * @param color 自分の色
-	 * @param pos 位置
-	 */
-	public effects(color: Color, pos: number): number[] {
-		const enemyColor = !color;
-
-		// ひっくり返せる石(の位置)リスト
-		let stones = [];
-
-		const initPos = pos;
-
-		// 走査
-		const iterate = (fn: (i: number) => number[]) => {
-			let i = 1;
-			const found = [];
-
-			while (true) {
-				let [x, y] = fn(i);
-
-				// 座標が指し示す位置がボード外に出たとき
-				if (this.opts.loopedBoard) {
-					if (x <  0             ) x = this.mapWidth  - ((-x) % this.mapWidth);
-					if (y <  0             ) y = this.mapHeight - ((-y) % this.mapHeight);
-					if (x >= this.mapWidth ) x = x % this.mapWidth;
-					if (y >= this.mapHeight) y = y % this.mapHeight;
-
-					// for debug
-					//if (x < 0 || y < 0 || x >= this.mapWidth || y >= this.mapHeight) {
-					//	console.log(x, y);
-					//}
-
-					// 一周して自分に帰ってきたら
-					if (this.transformXyToPos(x, y) == initPos) {
-						// ↓のコメントアウトを外すと、「現時点で自分の石が隣接していないが、
-						// そこに置いたとするとループして最終的に挟んだことになる」というケースを有効化します。(Test4のマップで違いが分かります)
-						// このケースを有効にした方が良いのか無効にした方が良いのか判断がつかなかったためとりあえず無効としておきます
-						// (あと無効な方がゲームとしておもしろそうだった)
-						stones = stones.concat(found);
-						break;
-					}
-				} else {
-					if (x == -1 || y == -1 || x == this.mapWidth || y == this.mapHeight) break;
-				}
-
-				const pos = this.transformXyToPos(x, y);
-
-				//#region 「配置不能」マスに当たった場合走査終了
-				const pixel = this.mapDataGet(pos);
-				if (pixel == 'null') break;
-				//#endregion
-
-				// 石取得
-				const stone = this.board[pos];
-
-				// 石が置かれていないマスなら走査終了
-				if (stone === null) break;
-
-				// 相手の石なら「ひっくり返せるかもリスト」に入れておく
-				if (stone === enemyColor) found.push(pos);
-
-				// 自分の石なら「ひっくり返せるかもリスト」を「ひっくり返せるリスト」に入れ、走査終了
-				if (stone === color) {
-					stones = stones.concat(found);
-					break;
-				}
-
-				i++;
-			}
-		};
-
-		const [x, y] = this.transformPosToXy(pos);
-
-		iterate(i => [x    , y - i]); // 上
-		iterate(i => [x + i, y - i]); // 右上
-		iterate(i => [x + i, y    ]); // 右
-		iterate(i => [x + i, y + i]); // 右下
-		iterate(i => [x    , y + i]); // 下
-		iterate(i => [x - i, y + i]); // 左下
-		iterate(i => [x - i, y    ]); // 左
-		iterate(i => [x - i, y - i]); // 左上
-
-		return stones;
-	}
-
-	/**
-	 * ゲームが終了したか否か
-	 */
-	public get isEnded(): boolean {
-		return this.turn === null;
-	}
-
-	/**
-	 * ゲームの勝者 (null = 引き分け)
-	 */
-	public get winner(): Color {
-		if (!this.isEnded) return undefined;
-
-		if (this.blackCount == this.whiteCount) return null;
-
-		if (this.opts.isLlotheo) {
-			return this.blackCount > this.whiteCount ? WHITE : BLACK;
-		} else {
-			return this.blackCount > this.whiteCount ? BLACK : WHITE;
-		}
-	}
-}
diff --git a/src/common/othello/maps.ts b/src/common/othello/maps.ts
deleted file mode 100644
index 68e5a446f1..0000000000
--- a/src/common/othello/maps.ts
+++ /dev/null
@@ -1,911 +0,0 @@
-/**
- * 組み込みマップ定義
- *
- * データ値:
- * (スペース) ... マス無し
- * - ... マス
- * b ... 初期配置される黒石
- * w ... 初期配置される白石
- */
-
-export type Map = {
-	name?: string;
-	category?: string;
-	author?: string;
-	data: string[];
-};
-
-export const fourfour: Map = {
-	name: '4x4',
-	category: '4x4',
-	data: [
-		'----',
-		'-wb-',
-		'-bw-',
-		'----'
-	]
-};
-
-export const sixsix: Map = {
-	name: '6x6',
-	category: '6x6',
-	data: [
-		'------',
-		'------',
-		'--wb--',
-		'--bw--',
-		'------',
-		'------'
-	]
-};
-
-export const roundedSixsix: Map = {
-	name: '6x6 rounded',
-	category: '6x6',
-	author: 'syuilo',
-	data: [
-		' ---- ',
-		'------',
-		'--wb--',
-		'--bw--',
-		'------',
-		' ---- '
-	]
-};
-
-export const roundedSixsix2: Map = {
-	name: '6x6 rounded 2',
-	category: '6x6',
-	author: 'syuilo',
-	data: [
-		'  --  ',
-		' ---- ',
-		'--wb--',
-		'--bw--',
-		' ---- ',
-		'  --  '
-	]
-};
-
-export const eighteight: Map = {
-	name: '8x8',
-	category: '8x8',
-	data: [
-		'--------',
-		'--------',
-		'--------',
-		'---wb---',
-		'---bw---',
-		'--------',
-		'--------',
-		'--------'
-	]
-};
-
-export const eighteightH1: Map = {
-	name: '8x8 handicap 1',
-	category: '8x8',
-	data: [
-		'b-------',
-		'--------',
-		'--------',
-		'---wb---',
-		'---bw---',
-		'--------',
-		'--------',
-		'--------'
-	]
-};
-
-export const eighteightH2: Map = {
-	name: '8x8 handicap 2',
-	category: '8x8',
-	data: [
-		'b-------',
-		'--------',
-		'--------',
-		'---wb---',
-		'---bw---',
-		'--------',
-		'--------',
-		'-------b'
-	]
-};
-
-export const eighteightH3: Map = {
-	name: '8x8 handicap 3',
-	category: '8x8',
-	data: [
-		'b------b',
-		'--------',
-		'--------',
-		'---wb---',
-		'---bw---',
-		'--------',
-		'--------',
-		'-------b'
-	]
-};
-
-export const eighteightH4: Map = {
-	name: '8x8 handicap 4',
-	category: '8x8',
-	data: [
-		'b------b',
-		'--------',
-		'--------',
-		'---wb---',
-		'---bw---',
-		'--------',
-		'--------',
-		'b------b'
-	]
-};
-
-export const eighteightH12: Map = {
-	name: '8x8 handicap 12',
-	category: '8x8',
-	data: [
-		'bb----bb',
-		'b------b',
-		'--------',
-		'---wb---',
-		'---bw---',
-		'--------',
-		'b------b',
-		'bb----bb'
-	]
-};
-
-export const eighteightH16: Map = {
-	name: '8x8 handicap 16',
-	category: '8x8',
-	data: [
-		'bbb---bb',
-		'b------b',
-		'-------b',
-		'---wb---',
-		'---bw---',
-		'b-------',
-		'b------b',
-		'bb---bbb'
-	]
-};
-
-export const eighteightH20: Map = {
-	name: '8x8 handicap 20',
-	category: '8x8',
-	data: [
-		'bbb--bbb',
-		'b------b',
-		'b------b',
-		'---wb---',
-		'---bw---',
-		'b------b',
-		'b------b',
-		'bbb---bb'
-	]
-};
-
-export const eighteightH28: Map = {
-	name: '8x8 handicap 28',
-	category: '8x8',
-	data: [
-		'bbbbbbbb',
-		'b------b',
-		'b------b',
-		'b--wb--b',
-		'b--bw--b',
-		'b------b',
-		'b------b',
-		'bbbbbbbb'
-	]
-};
-
-export const roundedEighteight: Map = {
-	name: '8x8 rounded',
-	category: '8x8',
-	author: 'syuilo',
-	data: [
-		' ------ ',
-		'--------',
-		'--------',
-		'---wb---',
-		'---bw---',
-		'--------',
-		'--------',
-		' ------ '
-	]
-};
-
-export const roundedEighteight2: Map = {
-	name: '8x8 rounded 2',
-	category: '8x8',
-	author: 'syuilo',
-	data: [
-		'  ----  ',
-		' ------ ',
-		'--------',
-		'---wb---',
-		'---bw---',
-		'--------',
-		' ------ ',
-		'  ----  '
-	]
-};
-
-export const roundedEighteight3: Map = {
-	name: '8x8 rounded 3',
-	category: '8x8',
-	author: 'syuilo',
-	data: [
-		'   --   ',
-		'  ----  ',
-		' ------ ',
-		'---wb---',
-		'---bw---',
-		' ------ ',
-		'  ----  ',
-		'   --   '
-	]
-};
-
-export const eighteightWithNotch: Map = {
-	name: '8x8 with notch',
-	category: '8x8',
-	author: 'syuilo',
-	data: [
-		'---  ---',
-		'--------',
-		'--------',
-		' --wb-- ',
-		' --bw-- ',
-		'--------',
-		'--------',
-		'---  ---'
-	]
-};
-
-export const eighteightWithSomeHoles: Map = {
-	name: '8x8 with some holes',
-	category: '8x8',
-	author: 'syuilo',
-	data: [
-		'--- ----',
-		'----- --',
-		'-- -----',
-		'---wb---',
-		'---bw- -',
-		' -------',
-		'--- ----',
-		'--------'
-	]
-};
-
-export const circle: Map = {
-	name: 'Circle',
-	category: '8x8',
-	author: 'syuilo',
-	data: [
-		'   --   ',
-		' ------ ',
-		' ------ ',
-		'---wb---',
-		'---bw---',
-		' ------ ',
-		' ------ ',
-		'   --   '
-	]
-};
-
-export const smile: Map = {
-	name: 'Smile',
-	category: '8x8',
-	author: 'syuilo',
-	data: [
-		' ------ ',
-		'--------',
-		'-- -- --',
-		'---wb---',
-		'-- bw --',
-		'---  ---',
-		'--------',
-		' ------ '
-	]
-};
-
-export const window: Map = {
-	name: 'Window',
-	category: '8x8',
-	author: 'syuilo',
-	data: [
-		'--------',
-		'-  --  -',
-		'-  --  -',
-		'---wb---',
-		'---bw---',
-		'-  --  -',
-		'-  --  -',
-		'--------'
-	]
-};
-
-export const reserved: Map = {
-	name: 'Reserved',
-	category: '8x8',
-	author: 'Aya',
-	data: [
-		'w------b',
-		'--------',
-		'--------',
-		'---wb---',
-		'---bw---',
-		'--------',
-		'--------',
-		'b------w'
-	]
-};
-
-export const x: Map = {
-	name: 'X',
-	category: '8x8',
-	author: 'Aya',
-	data: [
-		'w------b',
-		'-w----b-',
-		'--w--b--',
-		'---wb---',
-		'---bw---',
-		'--b--w--',
-		'-b----w-',
-		'b------w'
-	]
-};
-
-export const parallel: Map = {
-	name: 'Parallel',
-	category: '8x8',
-	author: 'Aya',
-	data: [
-		'--------',
-		'--------',
-		'--------',
-		'---bb---',
-		'---ww---',
-		'--------',
-		'--------',
-		'--------'
-	]
-};
-
-export const lackOfBlack: Map = {
-	name: 'Lack of Black',
-	category: '8x8',
-	data: [
-		'--------',
-		'--------',
-		'--------',
-		'---w----',
-		'---bw---',
-		'--------',
-		'--------',
-		'--------'
-	]
-};
-
-export const squareParty: Map = {
-	name: 'Square Party',
-	category: '8x8',
-	author: 'syuilo',
-	data: [
-		'--------',
-		'-wwwbbb-',
-		'-w-wb-b-',
-		'-wwwbbb-',
-		'-bbbwww-',
-		'-b-bw-w-',
-		'-bbbwww-',
-		'--------'
-	]
-};
-
-export const minesweeper: Map = {
-	name: 'Minesweeper',
-	category: '8x8',
-	author: 'syuilo',
-	data: [
-		'b-b--w-w',
-		'-w-wb-b-',
-		'w-b--w-b',
-		'-b-wb-w-',
-		'-w-bw-b-',
-		'b-w--b-w',
-		'-b-bw-w-',
-		'w-w--b-b'
-	]
-};
-
-export const tenthtenth: Map = {
-	name: '10x10',
-	category: '10x10',
-	data: [
-		'----------',
-		'----------',
-		'----------',
-		'----------',
-		'----wb----',
-		'----bw----',
-		'----------',
-		'----------',
-		'----------',
-		'----------'
-	]
-};
-
-export const hole: Map = {
-	name: 'The Hole',
-	category: '10x10',
-	author: 'syuilo',
-	data: [
-		'----------',
-		'----------',
-		'--wb--wb--',
-		'--bw--bw--',
-		'----  ----',
-		'----  ----',
-		'--wb--wb--',
-		'--bw--bw--',
-		'----------',
-		'----------'
-	]
-};
-
-export const grid: Map = {
-	name: 'Grid',
-	category: '10x10',
-	author: 'syuilo',
-	data: [
-		'----------',
-		'- - -- - -',
-		'----------',
-		'- - -- - -',
-		'----wb----',
-		'----bw----',
-		'- - -- - -',
-		'----------',
-		'- - -- - -',
-		'----------'
-	]
-};
-
-export const cross: Map = {
-	name: 'Cross',
-	category: '10x10',
-	author: 'Aya',
-	data: [
-		'   ----   ',
-		'   ----   ',
-		'   ----   ',
-		'----------',
-		'----wb----',
-		'----bw----',
-		'----------',
-		'   ----   ',
-		'   ----   ',
-		'   ----   '
-	]
-};
-
-export const charX: Map = {
-	name: 'Char X',
-	category: '10x10',
-	author: 'syuilo',
-	data: [
-		'---    ---',
-		'----  ----',
-		'----------',
-		' -------- ',
-		'  --wb--  ',
-		'  --bw--  ',
-		' -------- ',
-		'----------',
-		'----  ----',
-		'---    ---'
-	]
-};
-
-export const charY: Map = {
-	name: 'Char Y',
-	category: '10x10',
-	author: 'syuilo',
-	data: [
-		'---    ---',
-		'----  ----',
-		'----------',
-		' -------- ',
-		'  --wb--  ',
-		'  --bw--  ',
-		'  ------  ',
-		'  ------  ',
-		'  ------  ',
-		'  ------  '
-	]
-};
-
-export const walls: Map = {
-	name: 'Walls',
-	category: '10x10',
-	author: 'Aya',
-	data: [
-		' bbbbbbbb ',
-		'w--------w',
-		'w--------w',
-		'w--------w',
-		'w---wb---w',
-		'w---bw---w',
-		'w--------w',
-		'w--------w',
-		'w--------w',
-		' bbbbbbbb '
-	]
-};
-
-export const cpu: Map = {
-	name: 'CPU',
-	category: '10x10',
-	author: 'syuilo',
-	data: [
-		' b b  b b ',
-		'w--------w',
-		' -------- ',
-		'w--------w',
-		' ---wb--- ',
-		' ---bw--- ',
-		'w--------w',
-		' -------- ',
-		'w--------w',
-		' b b  b b '
-	]
-};
-
-export const checker: Map = {
-	name: 'Checker',
-	category: '10x10',
-	author: 'Aya',
-	data: [
-		'----------',
-		'----------',
-		'----------',
-		'---wbwb---',
-		'---bwbw---',
-		'---wbwb---',
-		'---bwbw---',
-		'----------',
-		'----------',
-		'----------'
-	]
-};
-
-export const japaneseCurry: Map = {
-	name: 'Japanese curry',
-	category: '10x10',
-	author: 'syuilo',
-	data: [
-		'w-b-b-b-b-',
-		'-w-b-b-b-b',
-		'w-w-b-b-b-',
-		'-w-w-b-b-b',
-		'w-w-wwb-b-',
-		'-w-wbb-b-b',
-		'w-w-w-b-b-',
-		'-w-w-w-b-b',
-		'w-w-w-w-b-',
-		'-w-w-w-w-b'
-	]
-};
-
-export const mosaic: Map = {
-	name: 'Mosaic',
-	category: '10x10',
-	author: 'syuilo',
-	data: [
-		'- - - - - ',
-		' - - - - -',
-		'- - - - - ',
-		' - w w - -',
-		'- - b b - ',
-		' - w w - -',
-		'- - b b - ',
-		' - - - - -',
-		'- - - - - ',
-		' - - - - -',
-	]
-};
-
-export const arena: Map = {
-	name: 'Arena',
-	category: '10x10',
-	author: 'syuilo',
-	data: [
-		'- - -- - -',
-		' - -  - - ',
-		'- ------ -',
-		' -------- ',
-		'- --wb-- -',
-		'- --bw-- -',
-		' -------- ',
-		'- ------ -',
-		' - -  - - ',
-		'- - -- - -'
-	]
-};
-
-export const reactor: Map = {
-	name: 'Reactor',
-	category: '10x10',
-	author: 'syuilo',
-	data: [
-		'-w------b-',
-		'b- -  - -w',
-		'- --wb-- -',
-		'---b  w---',
-		'- b wb w -',
-		'- w bw b -',
-		'---w  b---',
-		'- --bw-- -',
-		'w- -  - -b',
-		'-b------w-'
-	]
-};
-
-export const sixeight: Map = {
-	name: '6x8',
-	category: 'Special',
-	data: [
-		'------',
-		'------',
-		'------',
-		'--wb--',
-		'--bw--',
-		'------',
-		'------',
-		'------'
-	]
-};
-
-export const spark: Map = {
-	name: 'Spark',
-	category: 'Special',
-	author: 'syuilo',
-	data: [
-		' -      - ',
-		'----------',
-		' -------- ',
-		' -------- ',
-		' ---wb--- ',
-		' ---bw--- ',
-		' -------- ',
-		' -------- ',
-		'----------',
-		' -      - '
-	]
-};
-
-export const islands: Map = {
-	name: 'Islands',
-	category: 'Special',
-	author: 'syuilo',
-	data: [
-		'--------  ',
-		'---wb---  ',
-		'---bw---  ',
-		'--------  ',
-		'  -    -  ',
-		'  -    -  ',
-		'  --------',
-		'  --------',
-		'  --------',
-		'  --------'
-	]
-};
-
-export const galaxy: Map = {
-	name: 'Galaxy',
-	category: 'Special',
-	author: 'syuilo',
-	data: [
-		'   ------   ',
-		'  --www---  ',
-		' ------w--- ',
-		'---bbb--w---',
-		'--b---b-w-b-',
-		'-b--wwb-w-b-',
-		'-b-w-bww--b-',
-		'-b-w-b---b--',
-		'---w--bbb---',
-		' ---w------ ',
-		'  ---www--  ',
-		'   ------   '
-	]
-};
-
-export const triangle: Map = {
-	name: 'Triangle',
-	category: 'Special',
-	author: 'syuilo',
-	data: [
-		'    --    ',
-		'    --    ',
-		'   ----   ',
-		'   ----   ',
-		'  --wb--  ',
-		'  --bw--  ',
-		' -------- ',
-		' -------- ',
-		'----------',
-		'----------'
-	]
-};
-
-export const iphonex: Map = {
-	name: 'iPhone X',
-	category: 'Special',
-	author: 'syuilo',
-	data: [
-		' --  -- ',
-		'--------',
-		'--------',
-		'--------',
-		'--------',
-		'---wb---',
-		'---bw---',
-		'--------',
-		'--------',
-		'--------',
-		'--------',
-		' ------ '
-	]
-};
-
-export const dealWithIt: Map = {
-	name: 'Deal with it!',
-	category: 'Special',
-	author: 'syuilo',
-	data: [
-		'------------',
-		'--w-b-------',
-		' --b-w------',
-		'  --w-b---- ',
-		'   -------  '
-	]
-};
-
-export const experiment: Map = {
-	name: 'Let\'s experiment',
-	category: 'Special',
-	author: 'syuilo',
-	data: [
-		' ------------ ',
-		'------wb------',
-		'------bw------',
-		'--------------',
-		'    -    -    ',
-		'------  ------',
-		'bbbbbb  wwwwww',
-		'bbbbbb  wwwwww',
-		'bbbbbb  wwwwww',
-		'bbbbbb  wwwwww',
-		'wwwwww  bbbbbb'
-	]
-};
-
-export const bigBoard: Map = {
-	name: 'Big board',
-	category: 'Special',
-	data: [
-		'----------------',
-		'----------------',
-		'----------------',
-		'----------------',
-		'----------------',
-		'----------------',
-		'----------------',
-		'-------wb-------',
-		'-------bw-------',
-		'----------------',
-		'----------------',
-		'----------------',
-		'----------------',
-		'----------------',
-		'----------------',
-		'----------------'
-	]
-};
-
-export const twoBoard: Map = {
-	name: 'Two board',
-	category: 'Special',
-	author: 'Aya',
-	data: [
-		'-------- --------',
-		'-------- --------',
-		'-------- --------',
-		'---wb--- ---wb---',
-		'---bw--- ---bw---',
-		'-------- --------',
-		'-------- --------',
-		'-------- --------'
-	]
-};
-
-export const test1: Map = {
-	name: 'Test1',
-	category: 'Test',
-	data: [
-		'--------',
-		'---wb---',
-		'---bw---',
-		'--------'
-	]
-};
-
-export const test2: Map = {
-	name: 'Test2',
-	category: 'Test',
-	data: [
-		'------',
-		'------',
-		'-b--w-',
-		'-w--b-',
-		'-w--b-'
-	]
-};
-
-export const test3: Map = {
-	name: 'Test3',
-	category: 'Test',
-	data: [
-		'-w-',
-		'--w',
-		'w--',
-		'-w-',
-		'--w',
-		'w--',
-		'-w-',
-		'--w',
-		'w--',
-		'-w-',
-		'---',
-		'b--',
-	]
-};
-
-export const test4: Map = {
-	name: 'Test4',
-	category: 'Test',
-	data: [
-		'-w--b-',
-		'-w--b-',
-		'------',
-		'-w--b-',
-		'-w--b-'
-	]
-};
-
-// https://misskey.xyz/othello/5aaabf7fe126e10b5216ea09 64
-export const test5: Map = {
-	name: 'Test5',
-	category: 'Test',
-	data: [
-		'--wwwwww--',
-		'--wwwbwwww',
-		'-bwwbwbwww',
-		'-bwwwbwbww',
-		'-bwwbwbwbw',
-		'-bwbwbwb-w',
-		'bwbwwbbb-w',
-		'w-wbbbbb--',
-		'--w-b-w---',
-		'----------'
-	]
-};
diff --git a/src/common/remote/activitypub/act/create.ts b/src/common/remote/activitypub/act/create.ts
deleted file mode 100644
index 9eb74800ea..0000000000
--- a/src/common/remote/activitypub/act/create.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-import create from '../create';
-
-export default (resolver, actor, activity) => {
-	if ('actor' in activity && actor.account.uri !== activity.actor) {
-		throw new Error();
-	}
-
-	return create(resolver, actor, activity.object);
-};
diff --git a/src/common/remote/activitypub/act/index.ts b/src/common/remote/activitypub/act/index.ts
deleted file mode 100644
index a76983638f..0000000000
--- a/src/common/remote/activitypub/act/index.ts
+++ /dev/null
@@ -1,22 +0,0 @@
-import create from './create';
-import createObject from '../create';
-import Resolver from '../resolver';
-
-export default (actor, value) => {
-	return new Resolver().resolve(value).then(resolved => Promise.all(resolved.map(async promisedResult => {
-		const { resolver, object } = await promisedResult;
-		const created = await (await createObject(resolver, actor, [object]))[0];
-
-		if (created !== null) {
-			return created;
-		}
-
-		switch (object.type) {
-		case 'Create':
-			return create(resolver, actor, object);
-
-		default:
-			return null;
-		}
-	})));
-};
diff --git a/src/common/remote/activitypub/create.ts b/src/common/remote/activitypub/create.ts
deleted file mode 100644
index ea780f01ea..0000000000
--- a/src/common/remote/activitypub/create.ts
+++ /dev/null
@@ -1,87 +0,0 @@
-import { JSDOM } from 'jsdom';
-import config from '../../../conf';
-import Post from '../../../models/post';
-import RemoteUserObject, { IRemoteUserObject } from '../../../models/remote-user-object';
-import uploadFromUrl from '../../drive/upload_from_url';
-import Resolver from './resolver';
-const createDOMPurify = require('dompurify');
-
-function createRemoteUserObject($ref, $id, { id }) {
-	const object = { $ref, $id };
-
-	if (!id) {
-		return { object };
-	}
-
-	return RemoteUserObject.insert({ uri: id, object });
-}
-
-async function createImage(actor, object) {
-	if ('attributedTo' in object && actor.account.uri !== object.attributedTo) {
-		throw new Error();
-	}
-
-	const { _id } = await uploadFromUrl(object.url, actor);
-	return createRemoteUserObject('driveFiles.files', _id, object);
-}
-
-async function createNote(resolver, actor, object) {
-	if ('attributedTo' in object && actor.account.uri !== object.attributedTo) {
-		throw new Error();
-	}
-
-	const mediaIds = 'attachment' in object &&
-		(await Promise.all(await create(resolver, actor, object.attachment)))
-			.filter(media => media !== null && media.object.$ref === 'driveFiles.files')
-			.map(({ object }) => object.$id);
-
-	const { window } = new JSDOM(object.content);
-
-	const { _id } = await Post.insert({
-		channelId: undefined,
-		index: undefined,
-		createdAt: new Date(object.published),
-		mediaIds,
-		replyId: undefined,
-		repostId: undefined,
-		poll: undefined,
-		text: window.document.body.textContent,
-		textHtml: object.content && createDOMPurify(window).sanitize(object.content),
-		userId: actor._id,
-		appId: null,
-		viaMobile: false,
-		geo: undefined
-	});
-
-	// Register to search database
-	if (object.content && config.elasticsearch.enable) {
-		const es = require('../../db/elasticsearch');
-
-		es.index({
-			index: 'misskey',
-			type: 'post',
-			id: _id.toString(),
-			body: {
-				text: window.document.body.textContent
-			}
-		});
-	}
-
-	return createRemoteUserObject('posts', _id, object);
-}
-
-export default async function create(parentResolver: Resolver, actor, value): Promise<Array<Promise<IRemoteUserObject>>> {
-	const results = await parentResolver.resolveRemoteUserObjects(value);
-
-	return results.map(promisedResult => promisedResult.then(({ resolver, object }) => {
-		switch (object.type) {
-		case 'Image':
-			return createImage(actor, object);
-
-		case 'Note':
-			return createNote(resolver, actor, object);
-		}
-
-		return null;
-	}));
-}
diff --git a/src/common/remote/activitypub/renderer/context.ts b/src/common/remote/activitypub/renderer/context.ts
deleted file mode 100644
index b56f727ae7..0000000000
--- a/src/common/remote/activitypub/renderer/context.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-export default [
-	'https://www.w3.org/ns/activitystreams',
-	'https://w3id.org/security/v1',
-	{ Hashtag: 'as:Hashtag' }
-];
diff --git a/src/common/remote/activitypub/renderer/document.ts b/src/common/remote/activitypub/renderer/document.ts
deleted file mode 100644
index 4a456416a9..0000000000
--- a/src/common/remote/activitypub/renderer/document.ts
+++ /dev/null
@@ -1,7 +0,0 @@
-import config from '../../../../conf';
-
-export default ({ _id, contentType }) => ({
-	type: 'Document',
-	mediaType: contentType,
-	url: `${config.drive_url}/${_id}`
-});
diff --git a/src/common/remote/activitypub/renderer/follow.ts b/src/common/remote/activitypub/renderer/follow.ts
deleted file mode 100644
index 86a3f8cede..0000000000
--- a/src/common/remote/activitypub/renderer/follow.ts
+++ /dev/null
@@ -1,8 +0,0 @@
-import config from '../../../../conf';
-import { IRemoteUser } from '../../../../models/user';
-
-export default ({ username }, followee: IRemoteUser) => ({
-	type: 'Follow',
-	actor: `${config.url}/@${username}`,
-	object: followee.account.uri
-});
diff --git a/src/common/remote/activitypub/renderer/hashtag.ts b/src/common/remote/activitypub/renderer/hashtag.ts
deleted file mode 100644
index ad42700204..0000000000
--- a/src/common/remote/activitypub/renderer/hashtag.ts
+++ /dev/null
@@ -1,7 +0,0 @@
-import config from '../../../../conf';
-
-export default tag => ({
-	type: 'Hashtag',
-	href: `${config.url}/search?q=#${encodeURIComponent(tag)}`,
-	name: '#' + tag
-});
diff --git a/src/common/remote/activitypub/renderer/image.ts b/src/common/remote/activitypub/renderer/image.ts
deleted file mode 100644
index 345fbbec59..0000000000
--- a/src/common/remote/activitypub/renderer/image.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-import config from '../../../../conf';
-
-export default ({ _id }) => ({
-	type: 'Image',
-	url: `${config.drive_url}/${_id}`
-});
diff --git a/src/common/remote/activitypub/renderer/key.ts b/src/common/remote/activitypub/renderer/key.ts
deleted file mode 100644
index 3cac86b769..0000000000
--- a/src/common/remote/activitypub/renderer/key.ts
+++ /dev/null
@@ -1,10 +0,0 @@
-import config from '../../../../conf';
-import { extractPublic } from '../../../../crypto_key';
-import { ILocalUser } from '../../../../models/user';
-
-export default (user: ILocalUser) => ({
-	id: `${config.url}/@${user.username}/publickey`,
-	type: 'Key',
-	owner: `${config.url}/@${user.username}`,
-	publicKeyPem: extractPublic(user.account.keypair)
-});
diff --git a/src/common/remote/activitypub/renderer/note.ts b/src/common/remote/activitypub/renderer/note.ts
deleted file mode 100644
index 2fe20b2136..0000000000
--- a/src/common/remote/activitypub/renderer/note.ts
+++ /dev/null
@@ -1,44 +0,0 @@
-import renderDocument from './document';
-import renderHashtag from './hashtag';
-import config from '../../../../conf';
-import DriveFile from '../../../../models/drive-file';
-import Post from '../../../../models/post';
-import User from '../../../../models/user';
-
-export default async (user, post) => {
-	const promisedFiles = DriveFile.find({ _id: { $in: post.mediaIds } });
-	let inReplyTo;
-
-	if (post.replyId) {
-		const inReplyToPost = await Post.findOne({
-			_id: post.replyId,
-		});
-
-		if (inReplyToPost !== null) {
-			const inReplyToUser = await User.findOne({
-				_id: post.userId,
-			});
-
-			if (inReplyToUser !== null) {
-				inReplyTo = `${config.url}@${inReplyToUser.username}/${inReplyToPost._id}`;
-			}
-		}
-	} else {
-		inReplyTo = null;
-	}
-
-	const attributedTo = `${config.url}/@${user.username}`;
-
-	return {
-		id: `${attributedTo}/${post._id}`,
-		type: 'Note',
-		attributedTo,
-		content: post.textHtml,
-		published: post.createdAt.toISOString(),
-		to: 'https://www.w3.org/ns/activitystreams#Public',
-		cc: `${attributedTo}/followers`,
-		inReplyTo,
-		attachment: (await promisedFiles).map(renderDocument),
-		tag: post.tags.map(renderHashtag)
-	};
-};
diff --git a/src/common/remote/activitypub/renderer/ordered-collection.ts b/src/common/remote/activitypub/renderer/ordered-collection.ts
deleted file mode 100644
index 2ca0f77354..0000000000
--- a/src/common/remote/activitypub/renderer/ordered-collection.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-export default (id, totalItems, orderedItems) => ({
-	id,
-	type: 'OrderedCollection',
-	totalItems,
-	orderedItems
-});
diff --git a/src/common/remote/activitypub/renderer/person.ts b/src/common/remote/activitypub/renderer/person.ts
deleted file mode 100644
index 7303b30385..0000000000
--- a/src/common/remote/activitypub/renderer/person.ts
+++ /dev/null
@@ -1,20 +0,0 @@
-import renderImage from './image';
-import renderKey from './key';
-import config from '../../../../conf';
-
-export default user => {
-	const id = `${config.url}/@${user.username}`;
-
-	return {
-		type: 'Person',
-		id,
-		inbox: `${id}/inbox`,
-		outbox: `${id}/outbox`,
-		preferredUsername: user.username,
-		name: user.name,
-		summary: user.description,
-		icon: user.avatarId && renderImage({ _id: user.avatarId }),
-		image: user.bannerId && renderImage({ _id: user.bannerId }),
-		publicKey: renderKey(user)
-	};
-};
diff --git a/src/common/remote/activitypub/resolve-person.ts b/src/common/remote/activitypub/resolve-person.ts
deleted file mode 100644
index 73584946e5..0000000000
--- a/src/common/remote/activitypub/resolve-person.ts
+++ /dev/null
@@ -1,109 +0,0 @@
-import { JSDOM } from 'jsdom';
-import { toUnicode } from 'punycode';
-import User, { validateUsername, isValidName, isValidDescription } from '../../../models/user';
-import queue from '../../../queue';
-import webFinger from '../webfinger';
-import create from './create';
-import Resolver from './resolver';
-
-async function isCollection(collection) {
-	return ['Collection', 'OrderedCollection'].includes(collection.type);
-}
-
-export default async (value, usernameLower, hostLower, acctLower) => {
-	if (!validateUsername(usernameLower)) {
-		throw new Error();
-	}
-
-	const { resolver, object } = await new Resolver().resolveOne(value);
-
-	if (
-		object === null ||
-		object.type !== 'Person' ||
-		typeof object.preferredUsername !== 'string' ||
-		object.preferredUsername.toLowerCase() !== usernameLower ||
-		!isValidName(object.name) ||
-		!isValidDescription(object.summary)
-	) {
-		throw new Error();
-	}
-
-	const [followers, following, outbox, finger] = await Promise.all([
-		resolver.resolveOne(object.followers).then(
-			resolved => isCollection(resolved.object) ? resolved.object : null,
-			() => null
-		),
-		resolver.resolveOne(object.following).then(
-			resolved => isCollection(resolved.object) ? resolved.object : null,
-			() => null
-		),
-		resolver.resolveOne(object.outbox).then(
-			resolved => isCollection(resolved.object) ? resolved.object : null,
-			() => null
-		),
-		webFinger(object.id, acctLower),
-	]);
-
-	const summaryDOM = JSDOM.fragment(object.summary);
-
-	// Create user
-	const user = await User.insert({
-		avatarId: null,
-		bannerId: null,
-		createdAt: Date.parse(object.published),
-		description: summaryDOM.textContent,
-		followersCount: followers.totalItem,
-		followingCount: following.totalItem,
-		name: object.name,
-		postsCount: outbox.totalItem,
-		driveCapacity: 1024 * 1024 * 8, // 8MiB
-		username: object.preferredUsername,
-		usernameLower,
-		host: toUnicode(finger.subject.replace(/^.*?@/, '')),
-		hostLower,
-		account: {
-			publicKey: {
-				id: object.publicKey.id,
-				publicKeyPem: object.publicKey.publicKeyPem
-			},
-			inbox: object.inbox,
-			uri: object.id,
-		},
-	});
-
-	queue.create('http', {
-		type: 'performActivityPub',
-		actor: user._id,
-		outbox
-	}).save();
-
-	const [avatarId, bannerId] = await Promise.all([
-		object.icon,
-		object.image
-	].map(async value => {
-		if (value === undefined) {
-			return null;
-		}
-
-		try {
-			const created = await create(resolver, user, value);
-
-			await Promise.all(created.map(asyncCreated => asyncCreated.then(created => {
-				if (created !== null && created.object.$ref === 'driveFiles.files') {
-					throw created.object.$id;
-				}
-			}, () => {})));
-
-			return null;
-		} catch (id) {
-			return id;
-		}
-	}));
-
-	User.update({ _id: user._id }, { $set: { avatarId, bannerId } });
-
-	user.avatarId = avatarId;
-	user.bannerId = bannerId;
-
-	return user;
-};
diff --git a/src/common/remote/activitypub/resolver.ts b/src/common/remote/activitypub/resolver.ts
deleted file mode 100644
index a167fa1339..0000000000
--- a/src/common/remote/activitypub/resolver.ts
+++ /dev/null
@@ -1,97 +0,0 @@
-import RemoteUserObject from '../../../models/remote-user-object';
-import { IObject } from './type';
-const request = require('request-promise-native');
-
-type IResult = {
-  resolver: Resolver;
-  object: IObject;
-};
-
-export default class Resolver {
-	private requesting: Set<string>;
-
-	constructor(iterable?: Iterable<string>) {
-		this.requesting = new Set(iterable);
-	}
-
-	private async resolveUnrequestedOne(value) {
-		if (typeof value !== 'string') {
-			return { resolver: this, object: value };
-		}
-
-		const resolver = new Resolver(this.requesting);
-
-		resolver.requesting.add(value);
-
-		const object = await request({
-			url: value,
-			headers: {
-				Accept: 'application/activity+json, application/ld+json'
-			},
-			json: true
-		});
-
-		if (object === null || (
-			Array.isArray(object['@context']) ?
-				!object['@context'].includes('https://www.w3.org/ns/activitystreams') :
-				object['@context'] !== 'https://www.w3.org/ns/activitystreams'
-		)) {
-			throw new Error();
-		}
-
-		return { resolver, object };
-	}
-
-	private async resolveCollection(value) {
-		if (Array.isArray(value)) {
-			return value;
-		}
-
-		const resolved = typeof value === 'string' ?
-			await this.resolveUnrequestedOne(value) :
-			value;
-
-		switch (resolved.type) {
-		case 'Collection':
-			return resolved.items;
-
-		case 'OrderedCollection':
-			return resolved.orderedItems;
-
-		default:
-			return [resolved];
-		}
-	}
-
-	public async resolve(value): Promise<Array<Promise<IResult>>> {
-		const collection = await this.resolveCollection(value);
-
-		return collection
-			.filter(element => !this.requesting.has(element))
-			.map(this.resolveUnrequestedOne.bind(this));
-	}
-
-	public resolveOne(value) {
-		if (this.requesting.has(value)) {
-			throw new Error();
-		}
-
-		return this.resolveUnrequestedOne(value);
-	}
-
-	public async resolveRemoteUserObjects(value) {
-		const collection = await this.resolveCollection(value);
-
-		return collection.filter(element => !this.requesting.has(element)).map(element => {
-			if (typeof element === 'string') {
-				const object = RemoteUserObject.findOne({ uri: element });
-
-				if (object !== null) {
-					return object;
-				}
-			}
-
-			return this.resolveUnrequestedOne(element);
-		});
-	}
-}
diff --git a/src/common/remote/activitypub/type.ts b/src/common/remote/activitypub/type.ts
deleted file mode 100644
index 94e2c350a2..0000000000
--- a/src/common/remote/activitypub/type.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-export type IObject = {
-	type: string;
-};
diff --git a/src/common/remote/resolve-user.ts b/src/common/remote/resolve-user.ts
deleted file mode 100644
index 4959539da6..0000000000
--- a/src/common/remote/resolve-user.ts
+++ /dev/null
@@ -1,26 +0,0 @@
-import { toUnicode, toASCII } from 'punycode';
-import User from '../../models/user';
-import resolvePerson from './activitypub/resolve-person';
-import webFinger from './webfinger';
-
-export default async (username, host, option) => {
-	const usernameLower = username.toLowerCase();
-	const hostLowerAscii = toASCII(host).toLowerCase();
-	const hostLower = toUnicode(hostLowerAscii);
-
-	let user = await User.findOne({ usernameLower, hostLower }, option);
-
-	if (user === null) {
-		const acctLower = `${usernameLower}@${hostLowerAscii}`;
-
-		const finger = await webFinger(acctLower, acctLower);
-		const self = finger.links.find(link => link.rel && link.rel.toLowerCase() === 'self');
-		if (!self) {
-			throw new Error();
-		}
-
-		user = await resolvePerson(self.href, usernameLower, hostLower, acctLower);
-	}
-
-	return user;
-};
diff --git a/src/common/remote/webfinger.ts b/src/common/remote/webfinger.ts
deleted file mode 100644
index fec5da689c..0000000000
--- a/src/common/remote/webfinger.ts
+++ /dev/null
@@ -1,25 +0,0 @@
-const WebFinger = require('webfinger.js');
-
-const webFinger = new WebFinger({ });
-
-type ILink = {
-  href: string;
-  rel: string;
-};
-
-type IWebFinger = {
-  links: ILink[];
-  subject: string;
-};
-
-export default (query, verifier): Promise<IWebFinger> => new Promise((res, rej) => webFinger.lookup(query, (error, result) => {
-	if (error) {
-		return rej(error);
-	}
-
-	if (result.object.subject.toLowerCase().replace(/^acct:/, '') !== verifier) {
-		return rej('WebFinger verfification failed');
-	}
-
-	res(result.object);
-}));
diff --git a/src/common/text/parse/elements/mention.ts b/src/common/text/parse/elements/mention.ts
index 2025dfdaad..3c81979d0c 100644
--- a/src/common/text/parse/elements/mention.ts
+++ b/src/common/text/parse/elements/mention.ts
@@ -1,7 +1,7 @@
 /**
  * Mention
  */
-import parseAcct from '../../../../common/user/parse-acct';
+import parseAcct from '../../../../misc/user/parse-acct';
 
 module.exports = text => {
 	const match = text.match(/^(?:@[a-zA-Z0-9\-]+){1,2}/);
diff --git a/src/common/user/get-acct.ts b/src/common/user/get-acct.ts
deleted file mode 100644
index 9afb03d88b..0000000000
--- a/src/common/user/get-acct.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-export default user => {
-	return user.host === null ? user.username : `${user.username}@${user.host}`;
-};
diff --git a/src/common/user/get-summary.ts b/src/common/user/get-summary.ts
deleted file mode 100644
index 2c71d3eae9..0000000000
--- a/src/common/user/get-summary.ts
+++ /dev/null
@@ -1,18 +0,0 @@
-import { IUser, isLocalUser } from '../../models/user';
-import getAcct from './get-acct';
-
-/**
- * ユーザーを表す文字列を取得します。
- * @param user ユーザー
- */
-export default function(user: IUser): string {
-	let string = `${user.name} (@${getAcct(user)})\n` +
-		`${user.postsCount}投稿、${user.followingCount}フォロー、${user.followersCount}フォロワー\n`;
-
-	if (isLocalUser(user)) {
-		const account = user.account;
-		string += `場所: ${account.profile.location}、誕生日: ${account.profile.birthday}\n`;
-	}
-
-	return string + `「${user.description}」`;
-}
diff --git a/src/common/user/parse-acct.ts b/src/common/user/parse-acct.ts
deleted file mode 100644
index ef1f55405d..0000000000
--- a/src/common/user/parse-acct.ts
+++ /dev/null
@@ -1,4 +0,0 @@
-export default acct => {
-	const splitted = acct.split('@', 2);
-	return { username: splitted[0], host: splitted[1] || null };
-};
diff --git a/src/misc/get-notification-summary.ts b/src/misc/get-notification-summary.ts
new file mode 100644
index 0000000000..03db722c84
--- /dev/null
+++ b/src/misc/get-notification-summary.ts
@@ -0,0 +1,27 @@
+import getPostSummary from './get-post-summary';
+import getReactionEmoji from './get-reaction-emoji';
+
+/**
+ * 通知を表す文字列を取得します。
+ * @param notification 通知
+ */
+export default function(notification: any): string {
+	switch (notification.type) {
+		case 'follow':
+			return `${notification.user.name}にフォローされました`;
+		case 'mention':
+			return `言及されました:\n${notification.user.name}「${getPostSummary(notification.post)}」`;
+		case 'reply':
+			return `返信されました:\n${notification.user.name}「${getPostSummary(notification.post)}」`;
+		case 'repost':
+			return `Repostされました:\n${notification.user.name}「${getPostSummary(notification.post)}」`;
+		case 'quote':
+			return `引用されました:\n${notification.user.name}「${getPostSummary(notification.post)}」`;
+		case 'reaction':
+			return `リアクションされました:\n${notification.user.name} <${getReactionEmoji(notification.reaction)}>「${getPostSummary(notification.post)}」`;
+		case 'poll_vote':
+			return `投票されました:\n${notification.user.name}「${getPostSummary(notification.post)}」`;
+		default:
+			return `<不明な通知タイプ: ${notification.type}>`;
+	}
+}
diff --git a/src/misc/get-post-summary.ts b/src/misc/get-post-summary.ts
new file mode 100644
index 0000000000..8d0033064f
--- /dev/null
+++ b/src/misc/get-post-summary.ts
@@ -0,0 +1,45 @@
+/**
+ * 投稿を表す文字列を取得します。
+ * @param {*} post 投稿
+ */
+const summarize = (post: any): string => {
+	let summary = '';
+
+	// チャンネル
+	summary += post.channel ? `${post.channel.title}:` : '';
+
+	// 本文
+	summary += post.text ? post.text : '';
+
+	// メディアが添付されているとき
+	if (post.media) {
+		summary += ` (${post.media.length}つのメディア)`;
+	}
+
+	// 投票が添付されているとき
+	if (post.poll) {
+		summary += ' (投票)';
+	}
+
+	// 返信のとき
+	if (post.replyId) {
+		if (post.reply) {
+			summary += ` RE: ${summarize(post.reply)}`;
+		} else {
+			summary += ' RE: ...';
+		}
+	}
+
+	// Repostのとき
+	if (post.repostId) {
+		if (post.repost) {
+			summary += ` RP: ${summarize(post.repost)}`;
+		} else {
+			summary += ' RP: ...';
+		}
+	}
+
+	return summary.trim();
+};
+
+export default summarize;
diff --git a/src/misc/get-reaction-emoji.ts b/src/misc/get-reaction-emoji.ts
new file mode 100644
index 0000000000..c661205379
--- /dev/null
+++ b/src/misc/get-reaction-emoji.ts
@@ -0,0 +1,14 @@
+export default function(reaction: string): string {
+	switch (reaction) {
+		case 'like': return '👍';
+		case 'love': return '❤️';
+		case 'laugh': return '😆';
+		case 'hmm': return '🤔';
+		case 'surprise': return '😮';
+		case 'congrats': return '🎉';
+		case 'angry': return '💢';
+		case 'confused': return '😥';
+		case 'pudding': return '🍮';
+		default: return '';
+	}
+}
diff --git a/src/misc/othello/ai/back.ts b/src/misc/othello/ai/back.ts
new file mode 100644
index 0000000000..0950adaa9f
--- /dev/null
+++ b/src/misc/othello/ai/back.ts
@@ -0,0 +1,376 @@
+/**
+ * -AI-
+ * Botのバックエンド(思考を担当)
+ *
+ * 対話と思考を同じプロセスで行うと、思考時間が長引いたときにストリームから
+ * 切断されてしまうので、別々のプロセスで行うようにします
+ */
+
+import * as request from 'request-promise-native';
+import Othello, { Color } from '../core';
+import conf from '../../../conf';
+
+let game;
+let form;
+
+/**
+ * BotアカウントのユーザーID
+ */
+const id = conf.othello_ai.id;
+
+/**
+ * BotアカウントのAPIキー
+ */
+const i = conf.othello_ai.i;
+
+let post;
+
+process.on('message', async msg => {
+	// 親プロセスからデータをもらう
+	if (msg.type == '_init_') {
+		game = msg.game;
+		form = msg.form;
+	}
+
+	// フォームが更新されたとき
+	if (msg.type == 'update-form') {
+		form.find(i => i.id == msg.body.id).value = msg.body.value;
+	}
+
+	// ゲームが始まったとき
+	if (msg.type == 'started') {
+		onGameStarted(msg.body);
+
+		//#region TLに投稿する
+		const game = msg.body;
+		const url = `${conf.url}/othello/${game.id}`;
+		const user = game.user1Id == id ? game.user2 : game.user1;
+		const isSettai = form[0].value === 0;
+		const text = isSettai
+			? `?[${user.name}](${conf.url}/@${user.username})さんの接待を始めました！`
+			: `対局を?[${user.name}](${conf.url}/@${user.username})さんと始めました！ (強さ${form[0].value})`;
+
+		const res = await request.post(`${conf.api_url}/posts/create`, {
+			json: { i,
+				text: `${text}\n→[観戦する](${url})`
+			}
+		});
+
+		post = res.createdPost;
+		//#endregion
+	}
+
+	// ゲームが終了したとき
+	if (msg.type == 'ended') {
+		// ストリームから切断
+		process.send({
+			type: 'close'
+		});
+
+		//#region TLに投稿する
+		const user = game.user1Id == id ? game.user2 : game.user1;
+		const isSettai = form[0].value === 0;
+		const text = isSettai
+			? msg.body.winnerId === null
+				? `?[${user.name}](${conf.url}/@${user.username})さんに接待で引き分けました...`
+				: msg.body.winnerId == id
+					? `?[${user.name}](${conf.url}/@${user.username})さんに接待で勝ってしまいました...`
+					: `?[${user.name}](${conf.url}/@${user.username})さんに接待で負けてあげました♪`
+			: msg.body.winnerId === null
+				? `?[${user.name}](${conf.url}/@${user.username})さんと引き分けました～`
+				: msg.body.winnerId == id
+					? `?[${user.name}](${conf.url}/@${user.username})さんに勝ちました♪`
+					: `?[${user.name}](${conf.url}/@${user.username})さんに負けました...`;
+
+		await request.post(`${conf.api_url}/posts/create`, {
+			json: { i,
+				repostId: post.id,
+				text: text
+			}
+		});
+		//#endregion
+
+		process.exit();
+	}
+
+	// 打たれたとき
+	if (msg.type == 'set') {
+		onSet(msg.body);
+	}
+});
+
+let o: Othello;
+let botColor: Color;
+
+// 各マスの強さ
+let cellWeights;
+
+/**
+ * ゲーム開始時
+ * @param g ゲーム情報
+ */
+function onGameStarted(g) {
+	game = g;
+
+	// オセロエンジン初期化
+	o = new Othello(game.settings.map, {
+		isLlotheo: game.settings.isLlotheo,
+		canPutEverywhere: game.settings.canPutEverywhere,
+		loopedBoard: game.settings.loopedBoard
+	});
+
+	// 各マスの価値を計算しておく
+	cellWeights = o.map.map((pix, i) => {
+		if (pix == 'null') return 0;
+		const [x, y] = o.transformPosToXy(i);
+		let count = 0;
+		const get = (x, y) => {
+			if (x < 0 || y < 0 || x >= o.mapWidth || y >= o.mapHeight) return 'null';
+			return o.mapDataGet(o.transformXyToPos(x, y));
+		};
+
+		if (get(x    , y - 1) == 'null') count++;
+		if (get(x + 1, y - 1) == 'null') count++;
+		if (get(x + 1, y    ) == 'null') count++;
+		if (get(x + 1, y + 1) == 'null') count++;
+		if (get(x    , y + 1) == 'null') count++;
+		if (get(x - 1, y + 1) == 'null') count++;
+		if (get(x - 1, y    ) == 'null') count++;
+		if (get(x - 1, y - 1) == 'null') count++;
+		//return Math.pow(count, 3);
+		return count >= 4 ? 1 : 0;
+	});
+
+	botColor = game.user1Id == id && game.black == 1 || game.user2Id == id && game.black == 2;
+
+	if (botColor) {
+		think();
+	}
+}
+
+function onSet(x) {
+	o.put(x.color, x.pos);
+
+	if (x.next === botColor) {
+		think();
+	}
+}
+
+const db = {};
+
+function think() {
+	console.log('Thinking...');
+	console.time('think');
+
+	const isSettai = form[0].value === 0;
+
+	// 接待モードのときは、全力(5手先読みくらい)で負けるようにする
+	const maxDepth = isSettai ? 5 : form[0].value;
+
+	/**
+	 * Botにとってある局面がどれだけ有利か取得する
+	 */
+	function staticEval() {
+		let score = o.canPutSomewhere(botColor).length;
+
+		cellWeights.forEach((weight, i) => {
+			// 係数
+			const coefficient = 30;
+			weight = weight * coefficient;
+
+			const stone = o.board[i];
+			if (stone === botColor) {
+				// TODO: 価値のあるマスに設置されている自分の石に縦か横に接するマスは価値があると判断する
+				score += weight;
+			} else if (stone !== null) {
+				score -= weight;
+			}
+		});
+
+		// ロセオならスコアを反転
+		if (game.settings.isLlotheo) score = -score;
+
+		// 接待ならスコアを反転
+		if (isSettai) score = -score;
+
+		return score;
+	}
+
+	/**
+	 * αβ法での探索
+	 */
+	const dive = (pos: number, alpha = -Infinity, beta = Infinity, depth = 0): number => {
+		// 試し打ち
+		o.put(o.turn, pos);
+
+		const key = o.board.toString();
+		let cache = db[key];
+		if (cache) {
+			if (alpha >= cache.upper) {
+				o.undo();
+				return cache.upper;
+			}
+			if (beta <= cache.lower) {
+				o.undo();
+				return cache.lower;
+			}
+			alpha = Math.max(alpha, cache.lower);
+			beta = Math.min(beta, cache.upper);
+		} else {
+			cache = {
+				upper: Infinity,
+				lower: -Infinity
+			};
+		}
+
+		const isBotTurn = o.turn === botColor;
+
+		// 勝った
+		if (o.turn === null) {
+			const winner = o.winner;
+
+			// 勝つことによる基本スコア
+			const base = 10000;
+
+			let score;
+
+			if (game.settings.isLlotheo) {
+				// 勝ちは勝ちでも、より自分の石を少なくした方が美しい勝ちだと判定する
+				score = o.winner ? base - (o.blackCount * 100) : base - (o.whiteCount * 100);
+			} else {
+				// 勝ちは勝ちでも、より相手の石を少なくした方が美しい勝ちだと判定する
+				score = o.winner ? base + (o.blackCount * 100) : base + (o.whiteCount * 100);
+			}
+
+			// 巻き戻し
+			o.undo();
+
+			// 接待なら自分が負けた方が高スコア
+			return isSettai
+				? winner !== botColor ? score : -score
+				: winner === botColor ? score : -score;
+		}
+
+		if (depth === maxDepth) {
+			// 静的に評価
+			const score = staticEval();
+
+			// 巻き戻し
+			o.undo();
+
+			return score;
+		} else {
+			const cans = o.canPutSomewhere(o.turn);
+
+			let value = isBotTurn ? -Infinity : Infinity;
+			let a = alpha;
+			let b = beta;
+
+			// 次のターンのプレイヤーにとって最も良い手を取得
+			for (const p of cans) {
+				if (isBotTurn) {
+					const score = dive(p, a, beta, depth + 1);
+					value = Math.max(value, score);
+					a = Math.max(a, value);
+					if (value >= beta) break;
+				} else {
+					const score = dive(p, alpha, b, depth + 1);
+					value = Math.min(value, score);
+					b = Math.min(b, value);
+					if (value <= alpha) break;
+				}
+			}
+
+			// 巻き戻し
+			o.undo();
+
+			if (value <= alpha) {
+				cache.upper = value;
+			} else if (value >= beta) {
+				cache.lower = value;
+			} else {
+				cache.upper = value;
+				cache.lower = value;
+			}
+
+			db[key] = cache;
+
+			return value;
+		}
+	};
+
+	/**
+	 * αβ法での探索(キャッシュ無し)(デバッグ用)
+	 */
+	const dive2 = (pos: number, alpha = -Infinity, beta = Infinity, depth = 0): number => {
+		// 試し打ち
+		o.put(o.turn, pos);
+
+		const isBotTurn = o.turn === botColor;
+
+		// 勝った
+		if (o.turn === null) {
+			const winner = o.winner;
+
+			// 勝つことによる基本スコア
+			const base = 10000;
+
+			let score;
+
+			if (game.settings.isLlotheo) {
+				// 勝ちは勝ちでも、より自分の石を少なくした方が美しい勝ちだと判定する
+				score = o.winner ? base - (o.blackCount * 100) : base - (o.whiteCount * 100);
+			} else {
+				// 勝ちは勝ちでも、より相手の石を少なくした方が美しい勝ちだと判定する
+				score = o.winner ? base + (o.blackCount * 100) : base + (o.whiteCount * 100);
+			}
+
+			// 巻き戻し
+			o.undo();
+
+			// 接待なら自分が負けた方が高スコア
+			return isSettai
+				? winner !== botColor ? score : -score
+				: winner === botColor ? score : -score;
+		}
+
+		if (depth === maxDepth) {
+			// 静的に評価
+			const score = staticEval();
+
+			// 巻き戻し
+			o.undo();
+
+			return score;
+		} else {
+			const cans = o.canPutSomewhere(o.turn);
+
+			// 次のターンのプレイヤーにとって最も良い手を取得
+			for (const p of cans) {
+				if (isBotTurn) {
+					alpha = Math.max(alpha, dive2(p, alpha, beta, depth + 1));
+				} else {
+					beta = Math.min(beta, dive2(p, alpha, beta, depth + 1));
+				}
+				if (alpha >= beta) break;
+			}
+
+			// 巻き戻し
+			o.undo();
+
+			return isBotTurn ? alpha : beta;
+		}
+	};
+
+	const cans = o.canPutSomewhere(botColor);
+	const scores = cans.map(p => dive(p));
+	const pos = cans[scores.indexOf(Math.max(...scores))];
+
+	console.log('Thinked:', pos);
+	console.timeEnd('think');
+
+	process.send({
+		type: 'put',
+		pos
+	});
+}
diff --git a/src/misc/othello/ai/front.ts b/src/misc/othello/ai/front.ts
new file mode 100644
index 0000000000..e5496132f6
--- /dev/null
+++ b/src/misc/othello/ai/front.ts
@@ -0,0 +1,233 @@
+/**
+ * -AI-
+ * Botのフロントエンド(ストリームとの対話を担当)
+ *
+ * 対話と思考を同じプロセスで行うと、思考時間が長引いたときにストリームから
+ * 切断されてしまうので、別々のプロセスで行うようにします
+ */
+
+import * as childProcess from 'child_process';
+const WebSocket = require('ws');
+import * as ReconnectingWebSocket from 'reconnecting-websocket';
+import * as request from 'request-promise-native';
+import conf from '../../../conf';
+
+// 設定 ////////////////////////////////////////////////////////
+
+/**
+ * BotアカウントのAPIキー
+ */
+const i = conf.othello_ai.i;
+
+/**
+ * BotアカウントのユーザーID
+ */
+const id = conf.othello_ai.id;
+
+////////////////////////////////////////////////////////////////
+
+/**
+ * ホームストリーム
+ */
+const homeStream = new ReconnectingWebSocket(`${conf.ws_url}/?i=${i}`, undefined, {
+	constructor: WebSocket
+});
+
+homeStream.on('open', () => {
+	console.log('home stream opened');
+});
+
+homeStream.on('close', () => {
+	console.log('home stream closed');
+});
+
+homeStream.on('message', message => {
+	const msg = JSON.parse(message.toString());
+
+	// タイムライン上でなんか言われたまたは返信されたとき
+	if (msg.type == 'mention' || msg.type == 'reply') {
+		const post = msg.body;
+
+		if (post.userId == id) return;
+
+		// リアクションする
+		request.post(`${conf.api_url}/posts/reactions/create`, {
+			json: { i,
+				postId: post.id,
+				reaction: 'love'
+			}
+		});
+
+		if (post.text) {
+			if (post.text.indexOf('オセロ') > -1) {
+				request.post(`${conf.api_url}/posts/create`, {
+					json: { i,
+						replyId: post.id,
+						text: '良いですよ～'
+					}
+				});
+
+				invite(post.userId);
+			}
+		}
+	}
+
+	// メッセージでなんか言われたとき
+	if (msg.type == 'messaging_message') {
+		const message = msg.body;
+		if (message.text) {
+			if (message.text.indexOf('オセロ') > -1) {
+				request.post(`${conf.api_url}/messaging/messages/create`, {
+					json: { i,
+						userId: message.userId,
+						text: '良いですよ～'
+					}
+				});
+
+				invite(message.userId);
+			}
+		}
+	}
+});
+
+// ユーザーを対局に誘う
+function invite(userId) {
+	request.post(`${conf.api_url}/othello/match`, {
+		json: { i,
+			userId: userId
+		}
+	});
+}
+
+/**
+ * オセロストリーム
+ */
+const othelloStream = new ReconnectingWebSocket(`${conf.ws_url}/othello?i=${i}`, undefined, {
+	constructor: WebSocket
+});
+
+othelloStream.on('open', () => {
+	console.log('othello stream opened');
+});
+
+othelloStream.on('close', () => {
+	console.log('othello stream closed');
+});
+
+othelloStream.on('message', message => {
+	const msg = JSON.parse(message.toString());
+
+	// 招待されたとき
+	if (msg.type == 'invited') {
+		onInviteMe(msg.body.parent);
+	}
+
+	// マッチしたとき
+	if (msg.type == 'matched') {
+		gameStart(msg.body);
+	}
+});
+
+/**
+ * ゲーム開始
+ * @param game ゲーム情報
+ */
+function gameStart(game) {
+	// ゲームストリームに接続
+	const gw = new ReconnectingWebSocket(`${conf.ws_url}/othello-game?i=${i}&game=${game.id}`, undefined, {
+		constructor: WebSocket
+	});
+
+	gw.on('open', () => {
+		console.log('othello game stream opened');
+
+		// フォーム
+		const form = [{
+			id: 'strength',
+			type: 'radio',
+			label: '強さ',
+			value: 2,
+			items: [{
+				label: '接待',
+				value: 0
+			}, {
+				label: '弱',
+				value: 1
+			}, {
+				label: '中',
+				value: 2
+			}, {
+				label: '強',
+				value: 3
+			}, {
+				label: '最強',
+				value: 5
+			}]
+		}];
+
+		//#region バックエンドプロセス開始
+		const ai = childProcess.fork(__dirname + '/back.js');
+
+		// バックエンドプロセスに情報を渡す
+		ai.send({
+			type: '_init_',
+			game,
+			form
+		});
+
+		ai.on('message', msg => {
+			if (msg.type == 'put') {
+				gw.send(JSON.stringify({
+					type: 'set',
+					pos: msg.pos
+				}));
+			} else if (msg.type == 'close') {
+				gw.close();
+			}
+		});
+
+		// ゲームストリームから情報が流れてきたらそのままバックエンドプロセスに伝える
+		gw.on('message', message => {
+			const msg = JSON.parse(message.toString());
+			ai.send(msg);
+		});
+		//#endregion
+
+		// フォーム初期化
+		setTimeout(() => {
+			gw.send(JSON.stringify({
+				type: 'init-form',
+				body: form
+			}));
+		}, 1000);
+
+		// どんな設定内容の対局でも受け入れる
+		setTimeout(() => {
+			gw.send(JSON.stringify({
+				type: 'accept'
+			}));
+		}, 2000);
+	});
+
+	gw.on('close', () => {
+		console.log('othello game stream closed');
+	});
+}
+
+/**
+ * オセロの対局に招待されたとき
+ * @param inviter 誘ってきたユーザー
+ */
+async function onInviteMe(inviter) {
+	console.log(`Someone invited me: @${inviter.username}`);
+
+	// 承認
+	const game = await request.post(`${conf.api_url}/othello/match`, {
+		json: {
+			i,
+			userId: inviter.id
+		}
+	});
+
+	gameStart(game);
+}
diff --git a/src/misc/othello/ai/index.ts b/src/misc/othello/ai/index.ts
new file mode 100644
index 0000000000..5cd1db82da
--- /dev/null
+++ b/src/misc/othello/ai/index.ts
@@ -0,0 +1 @@
+require('./front');
diff --git a/src/misc/othello/core.ts b/src/misc/othello/core.ts
new file mode 100644
index 0000000000..217066d375
--- /dev/null
+++ b/src/misc/othello/core.ts
@@ -0,0 +1,340 @@
+/**
+ * true ... 黒
+ * false ... 白
+ */
+export type Color = boolean;
+const BLACK = true;
+const WHITE = false;
+
+export type MapPixel = 'null' | 'empty';
+
+export type Options = {
+	isLlotheo: boolean;
+	canPutEverywhere: boolean;
+	loopedBoard: boolean;
+};
+
+export type Undo = {
+	/**
+	 * 色
+	 */
+	color: Color,
+
+	/**
+	 * どこに打ったか
+	 */
+	pos: number;
+
+	/**
+	 * 反転した石の位置の配列
+	 */
+	effects: number[];
+
+	/**
+	 * ターン
+	 */
+	turn: Color;
+};
+
+/**
+ * オセロエンジン
+ */
+export default class Othello {
+	public map: MapPixel[];
+	public mapWidth: number;
+	public mapHeight: number;
+	public board: Color[];
+	public turn: Color = BLACK;
+	public opts: Options;
+
+	public prevPos = -1;
+	public prevColor: Color = null;
+
+	private logs: Undo[] = [];
+
+	/**
+	 * ゲームを初期化します
+	 */
+	constructor(map: string[], opts: Options) {
+		//#region binds
+		this.put = this.put.bind(this);
+		//#endregion
+
+		//#region Options
+		this.opts = opts;
+		if (this.opts.isLlotheo == null) this.opts.isLlotheo = false;
+		if (this.opts.canPutEverywhere == null) this.opts.canPutEverywhere = false;
+		if (this.opts.loopedBoard == null) this.opts.loopedBoard = false;
+		//#endregion
+
+		//#region Parse map data
+		this.mapWidth = map[0].length;
+		this.mapHeight = map.length;
+		const mapData = map.join('');
+
+		this.board = mapData.split('').map(d => {
+			if (d == '-') return null;
+			if (d == 'b') return BLACK;
+			if (d == 'w') return WHITE;
+			return undefined;
+		});
+
+		this.map = mapData.split('').map(d => {
+			if (d == '-' || d == 'b' || d == 'w') return 'empty';
+			return 'null';
+		});
+		//#endregion
+
+		// ゲームが始まった時点で片方の色の石しかないか、始まった時点で勝敗が決定するようなマップの場合がある
+		if (this.canPutSomewhere(BLACK).length == 0) {
+			if (this.canPutSomewhere(WHITE).length == 0) {
+				this.turn = null;
+			} else {
+				this.turn = WHITE;
+			}
+		}
+	}
+
+	/**
+	 * 黒石の数
+	 */
+	public get blackCount() {
+		return this.board.filter(x => x === BLACK).length;
+	}
+
+	/**
+	 * 白石の数
+	 */
+	public get whiteCount() {
+		return this.board.filter(x => x === WHITE).length;
+	}
+
+	/**
+	 * 黒石の比率
+	 */
+	public get blackP() {
+		if (this.blackCount == 0 && this.whiteCount == 0) return 0;
+		return this.blackCount / (this.blackCount + this.whiteCount);
+	}
+
+	/**
+	 * 白石の比率
+	 */
+	public get whiteP() {
+		if (this.blackCount == 0 && this.whiteCount == 0) return 0;
+		return this.whiteCount / (this.blackCount + this.whiteCount);
+	}
+
+	public transformPosToXy(pos: number): number[] {
+		const x = pos % this.mapWidth;
+		const y = Math.floor(pos / this.mapWidth);
+		return [x, y];
+	}
+
+	public transformXyToPos(x: number, y: number): number {
+		return x + (y * this.mapWidth);
+	}
+
+	/**
+	 * 指定のマスに石を打ちます
+	 * @param color 石の色
+	 * @param pos 位置
+	 */
+	public put(color: Color, pos: number) {
+		this.prevPos = pos;
+		this.prevColor = color;
+
+		this.board[pos] = color;
+
+		// 反転させられる石を取得
+		const effects = this.effects(color, pos);
+
+		// 反転させる
+		for (const pos of effects) {
+			this.board[pos] = color;
+		}
+
+		const turn = this.turn;
+
+		this.logs.push({
+			color,
+			pos,
+			effects,
+			turn
+		});
+
+		this.calcTurn();
+	}
+
+	private calcTurn() {
+		// ターン計算
+		if (this.canPutSomewhere(!this.prevColor).length > 0) {
+			this.turn = !this.prevColor;
+		} else if (this.canPutSomewhere(this.prevColor).length > 0) {
+			this.turn = this.prevColor;
+		} else {
+			this.turn = null;
+		}
+	}
+
+	public undo() {
+		const undo = this.logs.pop();
+		this.prevColor = undo.color;
+		this.prevPos = undo.pos;
+		this.board[undo.pos] = null;
+		for (const pos of undo.effects) {
+			const color = this.board[pos];
+			this.board[pos] = !color;
+		}
+		this.turn = undo.turn;
+	}
+
+	/**
+	 * 指定した位置のマップデータのマスを取得します
+	 * @param pos 位置
+	 */
+	public mapDataGet(pos: number): MapPixel {
+		const [x, y] = this.transformPosToXy(pos);
+		if (x < 0 || y < 0 || x >= this.mapWidth || y >= this.mapHeight) return 'null';
+		return this.map[pos];
+	}
+
+	/**
+	 * 打つことができる場所を取得します
+	 */
+	public canPutSomewhere(color: Color): number[] {
+		const result = [];
+
+		this.board.forEach((x, i) => {
+			if (this.canPut(color, i)) result.push(i);
+		});
+
+		return result;
+	}
+
+	/**
+	 * 指定のマスに石を打つことができるかどうかを取得します
+	 * @param color 自分の色
+	 * @param pos 位置
+	 */
+	public canPut(color: Color, pos: number): boolean {
+		// 既に石が置いてある場所には打てない
+		if (this.board[pos] !== null) return false;
+
+		if (this.opts.canPutEverywhere) {
+			// 挟んでなくても置けるモード
+			return this.mapDataGet(pos) == 'empty';
+		} else {
+			// 相手の石を1つでも反転させられるか
+			return this.effects(color, pos).length !== 0;
+		}
+	}
+
+	/**
+	 * 指定のマスに石を置いた時の、反転させられる石を取得します
+	 * @param color 自分の色
+	 * @param pos 位置
+	 */
+	public effects(color: Color, pos: number): number[] {
+		const enemyColor = !color;
+
+		// ひっくり返せる石(の位置)リスト
+		let stones = [];
+
+		const initPos = pos;
+
+		// 走査
+		const iterate = (fn: (i: number) => number[]) => {
+			let i = 1;
+			const found = [];
+
+			while (true) {
+				let [x, y] = fn(i);
+
+				// 座標が指し示す位置がボード外に出たとき
+				if (this.opts.loopedBoard) {
+					if (x <  0             ) x = this.mapWidth  - ((-x) % this.mapWidth);
+					if (y <  0             ) y = this.mapHeight - ((-y) % this.mapHeight);
+					if (x >= this.mapWidth ) x = x % this.mapWidth;
+					if (y >= this.mapHeight) y = y % this.mapHeight;
+
+					// for debug
+					//if (x < 0 || y < 0 || x >= this.mapWidth || y >= this.mapHeight) {
+					//	console.log(x, y);
+					//}
+
+					// 一周して自分に帰ってきたら
+					if (this.transformXyToPos(x, y) == initPos) {
+						// ↓のコメントアウトを外すと、「現時点で自分の石が隣接していないが、
+						// そこに置いたとするとループして最終的に挟んだことになる」というケースを有効化します。(Test4のマップで違いが分かります)
+						// このケースを有効にした方が良いのか無効にした方が良いのか判断がつかなかったためとりあえず無効としておきます
+						// (あと無効な方がゲームとしておもしろそうだった)
+						stones = stones.concat(found);
+						break;
+					}
+				} else {
+					if (x == -1 || y == -1 || x == this.mapWidth || y == this.mapHeight) break;
+				}
+
+				const pos = this.transformXyToPos(x, y);
+
+				//#region 「配置不能」マスに当たった場合走査終了
+				const pixel = this.mapDataGet(pos);
+				if (pixel == 'null') break;
+				//#endregion
+
+				// 石取得
+				const stone = this.board[pos];
+
+				// 石が置かれていないマスなら走査終了
+				if (stone === null) break;
+
+				// 相手の石なら「ひっくり返せるかもリスト」に入れておく
+				if (stone === enemyColor) found.push(pos);
+
+				// 自分の石なら「ひっくり返せるかもリスト」を「ひっくり返せるリスト」に入れ、走査終了
+				if (stone === color) {
+					stones = stones.concat(found);
+					break;
+				}
+
+				i++;
+			}
+		};
+
+		const [x, y] = this.transformPosToXy(pos);
+
+		iterate(i => [x    , y - i]); // 上
+		iterate(i => [x + i, y - i]); // 右上
+		iterate(i => [x + i, y    ]); // 右
+		iterate(i => [x + i, y + i]); // 右下
+		iterate(i => [x    , y + i]); // 下
+		iterate(i => [x - i, y + i]); // 左下
+		iterate(i => [x - i, y    ]); // 左
+		iterate(i => [x - i, y - i]); // 左上
+
+		return stones;
+	}
+
+	/**
+	 * ゲームが終了したか否か
+	 */
+	public get isEnded(): boolean {
+		return this.turn === null;
+	}
+
+	/**
+	 * ゲームの勝者 (null = 引き分け)
+	 */
+	public get winner(): Color {
+		if (!this.isEnded) return undefined;
+
+		if (this.blackCount == this.whiteCount) return null;
+
+		if (this.opts.isLlotheo) {
+			return this.blackCount > this.whiteCount ? WHITE : BLACK;
+		} else {
+			return this.blackCount > this.whiteCount ? BLACK : WHITE;
+		}
+	}
+}
diff --git a/src/misc/othello/maps.ts b/src/misc/othello/maps.ts
new file mode 100644
index 0000000000..68e5a446f1
--- /dev/null
+++ b/src/misc/othello/maps.ts
@@ -0,0 +1,911 @@
+/**
+ * 組み込みマップ定義
+ *
+ * データ値:
+ * (スペース) ... マス無し
+ * - ... マス
+ * b ... 初期配置される黒石
+ * w ... 初期配置される白石
+ */
+
+export type Map = {
+	name?: string;
+	category?: string;
+	author?: string;
+	data: string[];
+};
+
+export const fourfour: Map = {
+	name: '4x4',
+	category: '4x4',
+	data: [
+		'----',
+		'-wb-',
+		'-bw-',
+		'----'
+	]
+};
+
+export const sixsix: Map = {
+	name: '6x6',
+	category: '6x6',
+	data: [
+		'------',
+		'------',
+		'--wb--',
+		'--bw--',
+		'------',
+		'------'
+	]
+};
+
+export const roundedSixsix: Map = {
+	name: '6x6 rounded',
+	category: '6x6',
+	author: 'syuilo',
+	data: [
+		' ---- ',
+		'------',
+		'--wb--',
+		'--bw--',
+		'------',
+		' ---- '
+	]
+};
+
+export const roundedSixsix2: Map = {
+	name: '6x6 rounded 2',
+	category: '6x6',
+	author: 'syuilo',
+	data: [
+		'  --  ',
+		' ---- ',
+		'--wb--',
+		'--bw--',
+		' ---- ',
+		'  --  '
+	]
+};
+
+export const eighteight: Map = {
+	name: '8x8',
+	category: '8x8',
+	data: [
+		'--------',
+		'--------',
+		'--------',
+		'---wb---',
+		'---bw---',
+		'--------',
+		'--------',
+		'--------'
+	]
+};
+
+export const eighteightH1: Map = {
+	name: '8x8 handicap 1',
+	category: '8x8',
+	data: [
+		'b-------',
+		'--------',
+		'--------',
+		'---wb---',
+		'---bw---',
+		'--------',
+		'--------',
+		'--------'
+	]
+};
+
+export const eighteightH2: Map = {
+	name: '8x8 handicap 2',
+	category: '8x8',
+	data: [
+		'b-------',
+		'--------',
+		'--------',
+		'---wb---',
+		'---bw---',
+		'--------',
+		'--------',
+		'-------b'
+	]
+};
+
+export const eighteightH3: Map = {
+	name: '8x8 handicap 3',
+	category: '8x8',
+	data: [
+		'b------b',
+		'--------',
+		'--------',
+		'---wb---',
+		'---bw---',
+		'--------',
+		'--------',
+		'-------b'
+	]
+};
+
+export const eighteightH4: Map = {
+	name: '8x8 handicap 4',
+	category: '8x8',
+	data: [
+		'b------b',
+		'--------',
+		'--------',
+		'---wb---',
+		'---bw---',
+		'--------',
+		'--------',
+		'b------b'
+	]
+};
+
+export const eighteightH12: Map = {
+	name: '8x8 handicap 12',
+	category: '8x8',
+	data: [
+		'bb----bb',
+		'b------b',
+		'--------',
+		'---wb---',
+		'---bw---',
+		'--------',
+		'b------b',
+		'bb----bb'
+	]
+};
+
+export const eighteightH16: Map = {
+	name: '8x8 handicap 16',
+	category: '8x8',
+	data: [
+		'bbb---bb',
+		'b------b',
+		'-------b',
+		'---wb---',
+		'---bw---',
+		'b-------',
+		'b------b',
+		'bb---bbb'
+	]
+};
+
+export const eighteightH20: Map = {
+	name: '8x8 handicap 20',
+	category: '8x8',
+	data: [
+		'bbb--bbb',
+		'b------b',
+		'b------b',
+		'---wb---',
+		'---bw---',
+		'b------b',
+		'b------b',
+		'bbb---bb'
+	]
+};
+
+export const eighteightH28: Map = {
+	name: '8x8 handicap 28',
+	category: '8x8',
+	data: [
+		'bbbbbbbb',
+		'b------b',
+		'b------b',
+		'b--wb--b',
+		'b--bw--b',
+		'b------b',
+		'b------b',
+		'bbbbbbbb'
+	]
+};
+
+export const roundedEighteight: Map = {
+	name: '8x8 rounded',
+	category: '8x8',
+	author: 'syuilo',
+	data: [
+		' ------ ',
+		'--------',
+		'--------',
+		'---wb---',
+		'---bw---',
+		'--------',
+		'--------',
+		' ------ '
+	]
+};
+
+export const roundedEighteight2: Map = {
+	name: '8x8 rounded 2',
+	category: '8x8',
+	author: 'syuilo',
+	data: [
+		'  ----  ',
+		' ------ ',
+		'--------',
+		'---wb---',
+		'---bw---',
+		'--------',
+		' ------ ',
+		'  ----  '
+	]
+};
+
+export const roundedEighteight3: Map = {
+	name: '8x8 rounded 3',
+	category: '8x8',
+	author: 'syuilo',
+	data: [
+		'   --   ',
+		'  ----  ',
+		' ------ ',
+		'---wb---',
+		'---bw---',
+		' ------ ',
+		'  ----  ',
+		'   --   '
+	]
+};
+
+export const eighteightWithNotch: Map = {
+	name: '8x8 with notch',
+	category: '8x8',
+	author: 'syuilo',
+	data: [
+		'---  ---',
+		'--------',
+		'--------',
+		' --wb-- ',
+		' --bw-- ',
+		'--------',
+		'--------',
+		'---  ---'
+	]
+};
+
+export const eighteightWithSomeHoles: Map = {
+	name: '8x8 with some holes',
+	category: '8x8',
+	author: 'syuilo',
+	data: [
+		'--- ----',
+		'----- --',
+		'-- -----',
+		'---wb---',
+		'---bw- -',
+		' -------',
+		'--- ----',
+		'--------'
+	]
+};
+
+export const circle: Map = {
+	name: 'Circle',
+	category: '8x8',
+	author: 'syuilo',
+	data: [
+		'   --   ',
+		' ------ ',
+		' ------ ',
+		'---wb---',
+		'---bw---',
+		' ------ ',
+		' ------ ',
+		'   --   '
+	]
+};
+
+export const smile: Map = {
+	name: 'Smile',
+	category: '8x8',
+	author: 'syuilo',
+	data: [
+		' ------ ',
+		'--------',
+		'-- -- --',
+		'---wb---',
+		'-- bw --',
+		'---  ---',
+		'--------',
+		' ------ '
+	]
+};
+
+export const window: Map = {
+	name: 'Window',
+	category: '8x8',
+	author: 'syuilo',
+	data: [
+		'--------',
+		'-  --  -',
+		'-  --  -',
+		'---wb---',
+		'---bw---',
+		'-  --  -',
+		'-  --  -',
+		'--------'
+	]
+};
+
+export const reserved: Map = {
+	name: 'Reserved',
+	category: '8x8',
+	author: 'Aya',
+	data: [
+		'w------b',
+		'--------',
+		'--------',
+		'---wb---',
+		'---bw---',
+		'--------',
+		'--------',
+		'b------w'
+	]
+};
+
+export const x: Map = {
+	name: 'X',
+	category: '8x8',
+	author: 'Aya',
+	data: [
+		'w------b',
+		'-w----b-',
+		'--w--b--',
+		'---wb---',
+		'---bw---',
+		'--b--w--',
+		'-b----w-',
+		'b------w'
+	]
+};
+
+export const parallel: Map = {
+	name: 'Parallel',
+	category: '8x8',
+	author: 'Aya',
+	data: [
+		'--------',
+		'--------',
+		'--------',
+		'---bb---',
+		'---ww---',
+		'--------',
+		'--------',
+		'--------'
+	]
+};
+
+export const lackOfBlack: Map = {
+	name: 'Lack of Black',
+	category: '8x8',
+	data: [
+		'--------',
+		'--------',
+		'--------',
+		'---w----',
+		'---bw---',
+		'--------',
+		'--------',
+		'--------'
+	]
+};
+
+export const squareParty: Map = {
+	name: 'Square Party',
+	category: '8x8',
+	author: 'syuilo',
+	data: [
+		'--------',
+		'-wwwbbb-',
+		'-w-wb-b-',
+		'-wwwbbb-',
+		'-bbbwww-',
+		'-b-bw-w-',
+		'-bbbwww-',
+		'--------'
+	]
+};
+
+export const minesweeper: Map = {
+	name: 'Minesweeper',
+	category: '8x8',
+	author: 'syuilo',
+	data: [
+		'b-b--w-w',
+		'-w-wb-b-',
+		'w-b--w-b',
+		'-b-wb-w-',
+		'-w-bw-b-',
+		'b-w--b-w',
+		'-b-bw-w-',
+		'w-w--b-b'
+	]
+};
+
+export const tenthtenth: Map = {
+	name: '10x10',
+	category: '10x10',
+	data: [
+		'----------',
+		'----------',
+		'----------',
+		'----------',
+		'----wb----',
+		'----bw----',
+		'----------',
+		'----------',
+		'----------',
+		'----------'
+	]
+};
+
+export const hole: Map = {
+	name: 'The Hole',
+	category: '10x10',
+	author: 'syuilo',
+	data: [
+		'----------',
+		'----------',
+		'--wb--wb--',
+		'--bw--bw--',
+		'----  ----',
+		'----  ----',
+		'--wb--wb--',
+		'--bw--bw--',
+		'----------',
+		'----------'
+	]
+};
+
+export const grid: Map = {
+	name: 'Grid',
+	category: '10x10',
+	author: 'syuilo',
+	data: [
+		'----------',
+		'- - -- - -',
+		'----------',
+		'- - -- - -',
+		'----wb----',
+		'----bw----',
+		'- - -- - -',
+		'----------',
+		'- - -- - -',
+		'----------'
+	]
+};
+
+export const cross: Map = {
+	name: 'Cross',
+	category: '10x10',
+	author: 'Aya',
+	data: [
+		'   ----   ',
+		'   ----   ',
+		'   ----   ',
+		'----------',
+		'----wb----',
+		'----bw----',
+		'----------',
+		'   ----   ',
+		'   ----   ',
+		'   ----   '
+	]
+};
+
+export const charX: Map = {
+	name: 'Char X',
+	category: '10x10',
+	author: 'syuilo',
+	data: [
+		'---    ---',
+		'----  ----',
+		'----------',
+		' -------- ',
+		'  --wb--  ',
+		'  --bw--  ',
+		' -------- ',
+		'----------',
+		'----  ----',
+		'---    ---'
+	]
+};
+
+export const charY: Map = {
+	name: 'Char Y',
+	category: '10x10',
+	author: 'syuilo',
+	data: [
+		'---    ---',
+		'----  ----',
+		'----------',
+		' -------- ',
+		'  --wb--  ',
+		'  --bw--  ',
+		'  ------  ',
+		'  ------  ',
+		'  ------  ',
+		'  ------  '
+	]
+};
+
+export const walls: Map = {
+	name: 'Walls',
+	category: '10x10',
+	author: 'Aya',
+	data: [
+		' bbbbbbbb ',
+		'w--------w',
+		'w--------w',
+		'w--------w',
+		'w---wb---w',
+		'w---bw---w',
+		'w--------w',
+		'w--------w',
+		'w--------w',
+		' bbbbbbbb '
+	]
+};
+
+export const cpu: Map = {
+	name: 'CPU',
+	category: '10x10',
+	author: 'syuilo',
+	data: [
+		' b b  b b ',
+		'w--------w',
+		' -------- ',
+		'w--------w',
+		' ---wb--- ',
+		' ---bw--- ',
+		'w--------w',
+		' -------- ',
+		'w--------w',
+		' b b  b b '
+	]
+};
+
+export const checker: Map = {
+	name: 'Checker',
+	category: '10x10',
+	author: 'Aya',
+	data: [
+		'----------',
+		'----------',
+		'----------',
+		'---wbwb---',
+		'---bwbw---',
+		'---wbwb---',
+		'---bwbw---',
+		'----------',
+		'----------',
+		'----------'
+	]
+};
+
+export const japaneseCurry: Map = {
+	name: 'Japanese curry',
+	category: '10x10',
+	author: 'syuilo',
+	data: [
+		'w-b-b-b-b-',
+		'-w-b-b-b-b',
+		'w-w-b-b-b-',
+		'-w-w-b-b-b',
+		'w-w-wwb-b-',
+		'-w-wbb-b-b',
+		'w-w-w-b-b-',
+		'-w-w-w-b-b',
+		'w-w-w-w-b-',
+		'-w-w-w-w-b'
+	]
+};
+
+export const mosaic: Map = {
+	name: 'Mosaic',
+	category: '10x10',
+	author: 'syuilo',
+	data: [
+		'- - - - - ',
+		' - - - - -',
+		'- - - - - ',
+		' - w w - -',
+		'- - b b - ',
+		' - w w - -',
+		'- - b b - ',
+		' - - - - -',
+		'- - - - - ',
+		' - - - - -',
+	]
+};
+
+export const arena: Map = {
+	name: 'Arena',
+	category: '10x10',
+	author: 'syuilo',
+	data: [
+		'- - -- - -',
+		' - -  - - ',
+		'- ------ -',
+		' -------- ',
+		'- --wb-- -',
+		'- --bw-- -',
+		' -------- ',
+		'- ------ -',
+		' - -  - - ',
+		'- - -- - -'
+	]
+};
+
+export const reactor: Map = {
+	name: 'Reactor',
+	category: '10x10',
+	author: 'syuilo',
+	data: [
+		'-w------b-',
+		'b- -  - -w',
+		'- --wb-- -',
+		'---b  w---',
+		'- b wb w -',
+		'- w bw b -',
+		'---w  b---',
+		'- --bw-- -',
+		'w- -  - -b',
+		'-b------w-'
+	]
+};
+
+export const sixeight: Map = {
+	name: '6x8',
+	category: 'Special',
+	data: [
+		'------',
+		'------',
+		'------',
+		'--wb--',
+		'--bw--',
+		'------',
+		'------',
+		'------'
+	]
+};
+
+export const spark: Map = {
+	name: 'Spark',
+	category: 'Special',
+	author: 'syuilo',
+	data: [
+		' -      - ',
+		'----------',
+		' -------- ',
+		' -------- ',
+		' ---wb--- ',
+		' ---bw--- ',
+		' -------- ',
+		' -------- ',
+		'----------',
+		' -      - '
+	]
+};
+
+export const islands: Map = {
+	name: 'Islands',
+	category: 'Special',
+	author: 'syuilo',
+	data: [
+		'--------  ',
+		'---wb---  ',
+		'---bw---  ',
+		'--------  ',
+		'  -    -  ',
+		'  -    -  ',
+		'  --------',
+		'  --------',
+		'  --------',
+		'  --------'
+	]
+};
+
+export const galaxy: Map = {
+	name: 'Galaxy',
+	category: 'Special',
+	author: 'syuilo',
+	data: [
+		'   ------   ',
+		'  --www---  ',
+		' ------w--- ',
+		'---bbb--w---',
+		'--b---b-w-b-',
+		'-b--wwb-w-b-',
+		'-b-w-bww--b-',
+		'-b-w-b---b--',
+		'---w--bbb---',
+		' ---w------ ',
+		'  ---www--  ',
+		'   ------   '
+	]
+};
+
+export const triangle: Map = {
+	name: 'Triangle',
+	category: 'Special',
+	author: 'syuilo',
+	data: [
+		'    --    ',
+		'    --    ',
+		'   ----   ',
+		'   ----   ',
+		'  --wb--  ',
+		'  --bw--  ',
+		' -------- ',
+		' -------- ',
+		'----------',
+		'----------'
+	]
+};
+
+export const iphonex: Map = {
+	name: 'iPhone X',
+	category: 'Special',
+	author: 'syuilo',
+	data: [
+		' --  -- ',
+		'--------',
+		'--------',
+		'--------',
+		'--------',
+		'---wb---',
+		'---bw---',
+		'--------',
+		'--------',
+		'--------',
+		'--------',
+		' ------ '
+	]
+};
+
+export const dealWithIt: Map = {
+	name: 'Deal with it!',
+	category: 'Special',
+	author: 'syuilo',
+	data: [
+		'------------',
+		'--w-b-------',
+		' --b-w------',
+		'  --w-b---- ',
+		'   -------  '
+	]
+};
+
+export const experiment: Map = {
+	name: 'Let\'s experiment',
+	category: 'Special',
+	author: 'syuilo',
+	data: [
+		' ------------ ',
+		'------wb------',
+		'------bw------',
+		'--------------',
+		'    -    -    ',
+		'------  ------',
+		'bbbbbb  wwwwww',
+		'bbbbbb  wwwwww',
+		'bbbbbb  wwwwww',
+		'bbbbbb  wwwwww',
+		'wwwwww  bbbbbb'
+	]
+};
+
+export const bigBoard: Map = {
+	name: 'Big board',
+	category: 'Special',
+	data: [
+		'----------------',
+		'----------------',
+		'----------------',
+		'----------------',
+		'----------------',
+		'----------------',
+		'----------------',
+		'-------wb-------',
+		'-------bw-------',
+		'----------------',
+		'----------------',
+		'----------------',
+		'----------------',
+		'----------------',
+		'----------------',
+		'----------------'
+	]
+};
+
+export const twoBoard: Map = {
+	name: 'Two board',
+	category: 'Special',
+	author: 'Aya',
+	data: [
+		'-------- --------',
+		'-------- --------',
+		'-------- --------',
+		'---wb--- ---wb---',
+		'---bw--- ---bw---',
+		'-------- --------',
+		'-------- --------',
+		'-------- --------'
+	]
+};
+
+export const test1: Map = {
+	name: 'Test1',
+	category: 'Test',
+	data: [
+		'--------',
+		'---wb---',
+		'---bw---',
+		'--------'
+	]
+};
+
+export const test2: Map = {
+	name: 'Test2',
+	category: 'Test',
+	data: [
+		'------',
+		'------',
+		'-b--w-',
+		'-w--b-',
+		'-w--b-'
+	]
+};
+
+export const test3: Map = {
+	name: 'Test3',
+	category: 'Test',
+	data: [
+		'-w-',
+		'--w',
+		'w--',
+		'-w-',
+		'--w',
+		'w--',
+		'-w-',
+		'--w',
+		'w--',
+		'-w-',
+		'---',
+		'b--',
+	]
+};
+
+export const test4: Map = {
+	name: 'Test4',
+	category: 'Test',
+	data: [
+		'-w--b-',
+		'-w--b-',
+		'------',
+		'-w--b-',
+		'-w--b-'
+	]
+};
+
+// https://misskey.xyz/othello/5aaabf7fe126e10b5216ea09 64
+export const test5: Map = {
+	name: 'Test5',
+	category: 'Test',
+	data: [
+		'--wwwwww--',
+		'--wwwbwwww',
+		'-bwwbwbwww',
+		'-bwwwbwbww',
+		'-bwwbwbwbw',
+		'-bwbwbwb-w',
+		'bwbwwbbb-w',
+		'w-wbbbbb--',
+		'--w-b-w---',
+		'----------'
+	]
+};
diff --git a/src/misc/user/get-acct.ts b/src/misc/user/get-acct.ts
new file mode 100644
index 0000000000..9afb03d88b
--- /dev/null
+++ b/src/misc/user/get-acct.ts
@@ -0,0 +1,3 @@
+export default user => {
+	return user.host === null ? user.username : `${user.username}@${user.host}`;
+};
diff --git a/src/misc/user/get-summary.ts b/src/misc/user/get-summary.ts
new file mode 100644
index 0000000000..2c71d3eae9
--- /dev/null
+++ b/src/misc/user/get-summary.ts
@@ -0,0 +1,18 @@
+import { IUser, isLocalUser } from '../../models/user';
+import getAcct from './get-acct';
+
+/**
+ * ユーザーを表す文字列を取得します。
+ * @param user ユーザー
+ */
+export default function(user: IUser): string {
+	let string = `${user.name} (@${getAcct(user)})\n` +
+		`${user.postsCount}投稿、${user.followingCount}フォロー、${user.followersCount}フォロワー\n`;
+
+	if (isLocalUser(user)) {
+		const account = user.account;
+		string += `場所: ${account.profile.location}、誕生日: ${account.profile.birthday}\n`;
+	}
+
+	return string + `「${user.description}」`;
+}
diff --git a/src/misc/user/parse-acct.ts b/src/misc/user/parse-acct.ts
new file mode 100644
index 0000000000..ef1f55405d
--- /dev/null
+++ b/src/misc/user/parse-acct.ts
@@ -0,0 +1,4 @@
+export default acct => {
+	const splitted = acct.split('@', 2);
+	return { username: splitted[0], host: splitted[1] || null };
+};
diff --git a/src/processor/http/follow.ts b/src/processor/http/follow.ts
index 9b8337f2e7..4804657fd6 100644
--- a/src/processor/http/follow.ts
+++ b/src/processor/http/follow.ts
@@ -5,8 +5,8 @@ import User, { isLocalUser, pack as packUser, ILocalUser } from '../../models/us
 import Following from '../../models/following';
 import event from '../../common/event';
 import notify from '../../common/notify';
-import context from '../../common/remote/activitypub/renderer/context';
-import render from '../../common/remote/activitypub/renderer/follow';
+import context from '../../remote/activitypub/renderer/context';
+import render from '../../remote/activitypub/renderer/follow';
 import config from '../../conf';
 
 export default ({ data }, done) => Following.findOne({ _id: data.following }).then(({ followerId, followeeId }) => {
diff --git a/src/processor/http/perform-activitypub.ts b/src/processor/http/perform-activitypub.ts
index 5b1a02173d..51e1ede145 100644
--- a/src/processor/http/perform-activitypub.ts
+++ b/src/processor/http/perform-activitypub.ts
@@ -1,5 +1,5 @@
 import User from '../../models/user';
-import act from '../../common/remote/activitypub/act';
+import act from '../../remote/activitypub/act';
 
 export default ({ data }, done) => User.findOne({ _id: data.actor })
 	.then(actor => act(actor, data.outbox))
diff --git a/src/remote/activitypub/act/create.ts b/src/remote/activitypub/act/create.ts
new file mode 100644
index 0000000000..9eb74800ea
--- /dev/null
+++ b/src/remote/activitypub/act/create.ts
@@ -0,0 +1,9 @@
+import create from '../create';
+
+export default (resolver, actor, activity) => {
+	if ('actor' in activity && actor.account.uri !== activity.actor) {
+		throw new Error();
+	}
+
+	return create(resolver, actor, activity.object);
+};
diff --git a/src/remote/activitypub/act/index.ts b/src/remote/activitypub/act/index.ts
new file mode 100644
index 0000000000..a76983638f
--- /dev/null
+++ b/src/remote/activitypub/act/index.ts
@@ -0,0 +1,22 @@
+import create from './create';
+import createObject from '../create';
+import Resolver from '../resolver';
+
+export default (actor, value) => {
+	return new Resolver().resolve(value).then(resolved => Promise.all(resolved.map(async promisedResult => {
+		const { resolver, object } = await promisedResult;
+		const created = await (await createObject(resolver, actor, [object]))[0];
+
+		if (created !== null) {
+			return created;
+		}
+
+		switch (object.type) {
+		case 'Create':
+			return create(resolver, actor, object);
+
+		default:
+			return null;
+		}
+	})));
+};
diff --git a/src/remote/activitypub/create.ts b/src/remote/activitypub/create.ts
new file mode 100644
index 0000000000..e610232f51
--- /dev/null
+++ b/src/remote/activitypub/create.ts
@@ -0,0 +1,87 @@
+import { JSDOM } from 'jsdom';
+import config from '../../conf';
+import Post from '../../models/post';
+import RemoteUserObject, { IRemoteUserObject } from '../../models/remote-user-object';
+import uploadFromUrl from '../../common/drive/upload-from-url';
+import Resolver from './resolver';
+const createDOMPurify = require('dompurify');
+
+function createRemoteUserObject($ref, $id, { id }) {
+	const object = { $ref, $id };
+
+	if (!id) {
+		return { object };
+	}
+
+	return RemoteUserObject.insert({ uri: id, object });
+}
+
+async function createImage(actor, object) {
+	if ('attributedTo' in object && actor.account.uri !== object.attributedTo) {
+		throw new Error();
+	}
+
+	const { _id } = await uploadFromUrl(object.url, actor);
+	return createRemoteUserObject('driveFiles.files', _id, object);
+}
+
+async function createNote(resolver, actor, object) {
+	if ('attributedTo' in object && actor.account.uri !== object.attributedTo) {
+		throw new Error();
+	}
+
+	const mediaIds = 'attachment' in object &&
+		(await Promise.all(await create(resolver, actor, object.attachment)))
+			.filter(media => media !== null && media.object.$ref === 'driveFiles.files')
+			.map(({ object }) => object.$id);
+
+	const { window } = new JSDOM(object.content);
+
+	const { _id } = await Post.insert({
+		channelId: undefined,
+		index: undefined,
+		createdAt: new Date(object.published),
+		mediaIds,
+		replyId: undefined,
+		repostId: undefined,
+		poll: undefined,
+		text: window.document.body.textContent,
+		textHtml: object.content && createDOMPurify(window).sanitize(object.content),
+		userId: actor._id,
+		appId: null,
+		viaMobile: false,
+		geo: undefined
+	});
+
+	// Register to search database
+	if (object.content && config.elasticsearch.enable) {
+		const es = require('../../db/elasticsearch');
+
+		es.index({
+			index: 'misskey',
+			type: 'post',
+			id: _id.toString(),
+			body: {
+				text: window.document.body.textContent
+			}
+		});
+	}
+
+	return createRemoteUserObject('posts', _id, object);
+}
+
+export default async function create(parentResolver: Resolver, actor, value): Promise<Array<Promise<IRemoteUserObject>>> {
+	const results = await parentResolver.resolveRemoteUserObjects(value);
+
+	return results.map(promisedResult => promisedResult.then(({ resolver, object }) => {
+		switch (object.type) {
+		case 'Image':
+			return createImage(actor, object);
+
+		case 'Note':
+			return createNote(resolver, actor, object);
+		}
+
+		return null;
+	}));
+}
diff --git a/src/remote/activitypub/renderer/context.ts b/src/remote/activitypub/renderer/context.ts
new file mode 100644
index 0000000000..b56f727ae7
--- /dev/null
+++ b/src/remote/activitypub/renderer/context.ts
@@ -0,0 +1,5 @@
+export default [
+	'https://www.w3.org/ns/activitystreams',
+	'https://w3id.org/security/v1',
+	{ Hashtag: 'as:Hashtag' }
+];
diff --git a/src/remote/activitypub/renderer/document.ts b/src/remote/activitypub/renderer/document.ts
new file mode 100644
index 0000000000..fdd52c1b6c
--- /dev/null
+++ b/src/remote/activitypub/renderer/document.ts
@@ -0,0 +1,7 @@
+import config from '../../../conf';
+
+export default ({ _id, contentType }) => ({
+	type: 'Document',
+	mediaType: contentType,
+	url: `${config.drive_url}/${_id}`
+});
diff --git a/src/remote/activitypub/renderer/follow.ts b/src/remote/activitypub/renderer/follow.ts
new file mode 100644
index 0000000000..c99bc375a2
--- /dev/null
+++ b/src/remote/activitypub/renderer/follow.ts
@@ -0,0 +1,8 @@
+import config from '../../../conf';
+import { IRemoteUser } from '../../../models/user';
+
+export default ({ username }, followee: IRemoteUser) => ({
+	type: 'Follow',
+	actor: `${config.url}/@${username}`,
+	object: followee.account.uri
+});
diff --git a/src/remote/activitypub/renderer/hashtag.ts b/src/remote/activitypub/renderer/hashtag.ts
new file mode 100644
index 0000000000..c2d261ed21
--- /dev/null
+++ b/src/remote/activitypub/renderer/hashtag.ts
@@ -0,0 +1,7 @@
+import config from '../../../conf';
+
+export default tag => ({
+	type: 'Hashtag',
+	href: `${config.url}/search?q=#${encodeURIComponent(tag)}`,
+	name: '#' + tag
+});
diff --git a/src/remote/activitypub/renderer/image.ts b/src/remote/activitypub/renderer/image.ts
new file mode 100644
index 0000000000..3d1c71cb95
--- /dev/null
+++ b/src/remote/activitypub/renderer/image.ts
@@ -0,0 +1,6 @@
+import config from '../../../conf';
+
+export default ({ _id }) => ({
+	type: 'Image',
+	url: `${config.drive_url}/${_id}`
+});
diff --git a/src/remote/activitypub/renderer/key.ts b/src/remote/activitypub/renderer/key.ts
new file mode 100644
index 0000000000..904a69e081
--- /dev/null
+++ b/src/remote/activitypub/renderer/key.ts
@@ -0,0 +1,10 @@
+import config from '../../../conf';
+import { extractPublic } from '../../../crypto_key';
+import { ILocalUser } from '../../../models/user';
+
+export default (user: ILocalUser) => ({
+	id: `${config.url}/@${user.username}/publickey`,
+	type: 'Key',
+	owner: `${config.url}/@${user.username}`,
+	publicKeyPem: extractPublic(user.account.keypair)
+});
diff --git a/src/remote/activitypub/renderer/note.ts b/src/remote/activitypub/renderer/note.ts
new file mode 100644
index 0000000000..74806f14b4
--- /dev/null
+++ b/src/remote/activitypub/renderer/note.ts
@@ -0,0 +1,44 @@
+import renderDocument from './document';
+import renderHashtag from './hashtag';
+import config from '../../../conf';
+import DriveFile from '../../../models/drive-file';
+import Post from '../../../models/post';
+import User from '../../../models/user';
+
+export default async (user, post) => {
+	const promisedFiles = DriveFile.find({ _id: { $in: post.mediaIds } });
+	let inReplyTo;
+
+	if (post.replyId) {
+		const inReplyToPost = await Post.findOne({
+			_id: post.replyId,
+		});
+
+		if (inReplyToPost !== null) {
+			const inReplyToUser = await User.findOne({
+				_id: post.userId,
+			});
+
+			if (inReplyToUser !== null) {
+				inReplyTo = `${config.url}@${inReplyToUser.username}/${inReplyToPost._id}`;
+			}
+		}
+	} else {
+		inReplyTo = null;
+	}
+
+	const attributedTo = `${config.url}/@${user.username}`;
+
+	return {
+		id: `${attributedTo}/${post._id}`,
+		type: 'Note',
+		attributedTo,
+		content: post.textHtml,
+		published: post.createdAt.toISOString(),
+		to: 'https://www.w3.org/ns/activitystreams#Public',
+		cc: `${attributedTo}/followers`,
+		inReplyTo,
+		attachment: (await promisedFiles).map(renderDocument),
+		tag: post.tags.map(renderHashtag)
+	};
+};
diff --git a/src/remote/activitypub/renderer/ordered-collection.ts b/src/remote/activitypub/renderer/ordered-collection.ts
new file mode 100644
index 0000000000..2ca0f77354
--- /dev/null
+++ b/src/remote/activitypub/renderer/ordered-collection.ts
@@ -0,0 +1,6 @@
+export default (id, totalItems, orderedItems) => ({
+	id,
+	type: 'OrderedCollection',
+	totalItems,
+	orderedItems
+});
diff --git a/src/remote/activitypub/renderer/person.ts b/src/remote/activitypub/renderer/person.ts
new file mode 100644
index 0000000000..c6c7893165
--- /dev/null
+++ b/src/remote/activitypub/renderer/person.ts
@@ -0,0 +1,20 @@
+import renderImage from './image';
+import renderKey from './key';
+import config from '../../../conf';
+
+export default user => {
+	const id = `${config.url}/@${user.username}`;
+
+	return {
+		type: 'Person',
+		id,
+		inbox: `${id}/inbox`,
+		outbox: `${id}/outbox`,
+		preferredUsername: user.username,
+		name: user.name,
+		summary: user.description,
+		icon: user.avatarId && renderImage({ _id: user.avatarId }),
+		image: user.bannerId && renderImage({ _id: user.bannerId }),
+		publicKey: renderKey(user)
+	};
+};
diff --git a/src/remote/activitypub/resolve-person.ts b/src/remote/activitypub/resolve-person.ts
new file mode 100644
index 0000000000..d928e7ce19
--- /dev/null
+++ b/src/remote/activitypub/resolve-person.ts
@@ -0,0 +1,109 @@
+import { JSDOM } from 'jsdom';
+import { toUnicode } from 'punycode';
+import User, { validateUsername, isValidName, isValidDescription } from '../../models/user';
+import queue from '../../queue';
+import webFinger from '../webfinger';
+import create from './create';
+import Resolver from './resolver';
+
+async function isCollection(collection) {
+	return ['Collection', 'OrderedCollection'].includes(collection.type);
+}
+
+export default async (value, usernameLower, hostLower, acctLower) => {
+	if (!validateUsername(usernameLower)) {
+		throw new Error();
+	}
+
+	const { resolver, object } = await new Resolver().resolveOne(value);
+
+	if (
+		object === null ||
+		object.type !== 'Person' ||
+		typeof object.preferredUsername !== 'string' ||
+		object.preferredUsername.toLowerCase() !== usernameLower ||
+		!isValidName(object.name) ||
+		!isValidDescription(object.summary)
+	) {
+		throw new Error();
+	}
+
+	const [followers, following, outbox, finger] = await Promise.all([
+		resolver.resolveOne(object.followers).then(
+			resolved => isCollection(resolved.object) ? resolved.object : null,
+			() => null
+		),
+		resolver.resolveOne(object.following).then(
+			resolved => isCollection(resolved.object) ? resolved.object : null,
+			() => null
+		),
+		resolver.resolveOne(object.outbox).then(
+			resolved => isCollection(resolved.object) ? resolved.object : null,
+			() => null
+		),
+		webFinger(object.id, acctLower),
+	]);
+
+	const summaryDOM = JSDOM.fragment(object.summary);
+
+	// Create user
+	const user = await User.insert({
+		avatarId: null,
+		bannerId: null,
+		createdAt: Date.parse(object.published),
+		description: summaryDOM.textContent,
+		followersCount: followers.totalItem,
+		followingCount: following.totalItem,
+		name: object.name,
+		postsCount: outbox.totalItem,
+		driveCapacity: 1024 * 1024 * 8, // 8MiB
+		username: object.preferredUsername,
+		usernameLower,
+		host: toUnicode(finger.subject.replace(/^.*?@/, '')),
+		hostLower,
+		account: {
+			publicKey: {
+				id: object.publicKey.id,
+				publicKeyPem: object.publicKey.publicKeyPem
+			},
+			inbox: object.inbox,
+			uri: object.id,
+		},
+	});
+
+	queue.create('http', {
+		type: 'performActivityPub',
+		actor: user._id,
+		outbox
+	}).save();
+
+	const [avatarId, bannerId] = await Promise.all([
+		object.icon,
+		object.image
+	].map(async value => {
+		if (value === undefined) {
+			return null;
+		}
+
+		try {
+			const created = await create(resolver, user, value);
+
+			await Promise.all(created.map(asyncCreated => asyncCreated.then(created => {
+				if (created !== null && created.object.$ref === 'driveFiles.files') {
+					throw created.object.$id;
+				}
+			}, () => {})));
+
+			return null;
+		} catch (id) {
+			return id;
+		}
+	}));
+
+	User.update({ _id: user._id }, { $set: { avatarId, bannerId } });
+
+	user.avatarId = avatarId;
+	user.bannerId = bannerId;
+
+	return user;
+};
diff --git a/src/remote/activitypub/resolver.ts b/src/remote/activitypub/resolver.ts
new file mode 100644
index 0000000000..ebfe25fe7e
--- /dev/null
+++ b/src/remote/activitypub/resolver.ts
@@ -0,0 +1,97 @@
+import RemoteUserObject from '../../models/remote-user-object';
+import { IObject } from './type';
+const request = require('request-promise-native');
+
+type IResult = {
+  resolver: Resolver;
+  object: IObject;
+};
+
+export default class Resolver {
+	private requesting: Set<string>;
+
+	constructor(iterable?: Iterable<string>) {
+		this.requesting = new Set(iterable);
+	}
+
+	private async resolveUnrequestedOne(value) {
+		if (typeof value !== 'string') {
+			return { resolver: this, object: value };
+		}
+
+		const resolver = new Resolver(this.requesting);
+
+		resolver.requesting.add(value);
+
+		const object = await request({
+			url: value,
+			headers: {
+				Accept: 'application/activity+json, application/ld+json'
+			},
+			json: true
+		});
+
+		if (object === null || (
+			Array.isArray(object['@context']) ?
+				!object['@context'].includes('https://www.w3.org/ns/activitystreams') :
+				object['@context'] !== 'https://www.w3.org/ns/activitystreams'
+		)) {
+			throw new Error();
+		}
+
+		return { resolver, object };
+	}
+
+	private async resolveCollection(value) {
+		if (Array.isArray(value)) {
+			return value;
+		}
+
+		const resolved = typeof value === 'string' ?
+			await this.resolveUnrequestedOne(value) :
+			value;
+
+		switch (resolved.type) {
+		case 'Collection':
+			return resolved.items;
+
+		case 'OrderedCollection':
+			return resolved.orderedItems;
+
+		default:
+			return [resolved];
+		}
+	}
+
+	public async resolve(value): Promise<Array<Promise<IResult>>> {
+		const collection = await this.resolveCollection(value);
+
+		return collection
+			.filter(element => !this.requesting.has(element))
+			.map(this.resolveUnrequestedOne.bind(this));
+	}
+
+	public resolveOne(value) {
+		if (this.requesting.has(value)) {
+			throw new Error();
+		}
+
+		return this.resolveUnrequestedOne(value);
+	}
+
+	public async resolveRemoteUserObjects(value) {
+		const collection = await this.resolveCollection(value);
+
+		return collection.filter(element => !this.requesting.has(element)).map(element => {
+			if (typeof element === 'string') {
+				const object = RemoteUserObject.findOne({ uri: element });
+
+				if (object !== null) {
+					return object;
+				}
+			}
+
+			return this.resolveUnrequestedOne(element);
+		});
+	}
+}
diff --git a/src/remote/activitypub/type.ts b/src/remote/activitypub/type.ts
new file mode 100644
index 0000000000..94e2c350a2
--- /dev/null
+++ b/src/remote/activitypub/type.ts
@@ -0,0 +1,3 @@
+export type IObject = {
+	type: string;
+};
diff --git a/src/remote/resolve-user.ts b/src/remote/resolve-user.ts
new file mode 100644
index 0000000000..a393092839
--- /dev/null
+++ b/src/remote/resolve-user.ts
@@ -0,0 +1,26 @@
+import { toUnicode, toASCII } from 'punycode';
+import User from '../models/user';
+import resolvePerson from './activitypub/resolve-person';
+import webFinger from './webfinger';
+
+export default async (username, host, option) => {
+	const usernameLower = username.toLowerCase();
+	const hostLowerAscii = toASCII(host).toLowerCase();
+	const hostLower = toUnicode(hostLowerAscii);
+
+	let user = await User.findOne({ usernameLower, hostLower }, option);
+
+	if (user === null) {
+		const acctLower = `${usernameLower}@${hostLowerAscii}`;
+
+		const finger = await webFinger(acctLower, acctLower);
+		const self = finger.links.find(link => link.rel && link.rel.toLowerCase() === 'self');
+		if (!self) {
+			throw new Error();
+		}
+
+		user = await resolvePerson(self.href, usernameLower, hostLower, acctLower);
+	}
+
+	return user;
+};
diff --git a/src/remote/webfinger.ts b/src/remote/webfinger.ts
new file mode 100644
index 0000000000..fec5da689c
--- /dev/null
+++ b/src/remote/webfinger.ts
@@ -0,0 +1,25 @@
+const WebFinger = require('webfinger.js');
+
+const webFinger = new WebFinger({ });
+
+type ILink = {
+  href: string;
+  rel: string;
+};
+
+type IWebFinger = {
+  links: ILink[];
+  subject: string;
+};
+
+export default (query, verifier): Promise<IWebFinger> => new Promise((res, rej) => webFinger.lookup(query, (error, result) => {
+	if (error) {
+		return rej(error);
+	}
+
+	if (result.object.subject.toLowerCase().replace(/^acct:/, '') !== verifier) {
+		return rej('WebFinger verfification failed');
+	}
+
+	res(result.object);
+}));
diff --git a/src/server/activitypub/inbox.ts b/src/server/activitypub/inbox.ts
index cb679dbf0e..31a47e2761 100644
--- a/src/server/activitypub/inbox.ts
+++ b/src/server/activitypub/inbox.ts
@@ -3,7 +3,7 @@ import * as express from 'express';
 import { parseRequest, verifySignature } from 'http-signature';
 import User, { IRemoteUser } from '../../models/user';
 import queue from '../../queue';
-import parseAcct from '../../common/user/parse-acct';
+import parseAcct from '../../misc/user/parse-acct';
 
 const app = express();
 app.disable('x-powered-by');
diff --git a/src/server/activitypub/outbox.ts b/src/server/activitypub/outbox.ts
index c26c4df75d..2018d8797b 100644
--- a/src/server/activitypub/outbox.ts
+++ b/src/server/activitypub/outbox.ts
@@ -1,7 +1,7 @@
 import * as express from 'express';
-import context from '../../common/remote/activitypub/renderer/context';
-import renderNote from '../../common/remote/activitypub/renderer/note';
-import renderOrderedCollection from '../../common/remote/activitypub/renderer/ordered-collection';
+import context from '../../remote/activitypub/renderer/context';
+import renderNote from '../../remote/activitypub/renderer/note';
+import renderOrderedCollection from '../../remote/activitypub/renderer/ordered-collection';
 import config from '../../conf';
 import Post from '../../models/post';
 import withUser from './with-user';
diff --git a/src/server/activitypub/post.ts b/src/server/activitypub/post.ts
index 6644563d8c..ecbf9671fa 100644
--- a/src/server/activitypub/post.ts
+++ b/src/server/activitypub/post.ts
@@ -1,7 +1,7 @@
 import * as express from 'express';
-import context from '../../common/remote/activitypub/renderer/context';
-import render from '../../common/remote/activitypub/renderer/note';
-import parseAcct from '../../common/user/parse-acct';
+import context from '../../remote/activitypub/renderer/context';
+import render from '../../remote/activitypub/renderer/note';
+import parseAcct from '../../misc/user/parse-acct';
 import Post from '../../models/post';
 import User from '../../models/user';
 
diff --git a/src/server/activitypub/publickey.ts b/src/server/activitypub/publickey.ts
index e380309dc4..a23d11c156 100644
--- a/src/server/activitypub/publickey.ts
+++ b/src/server/activitypub/publickey.ts
@@ -1,6 +1,6 @@
 import * as express from 'express';
-import context from '../../common/remote/activitypub/renderer/context';
-import render from '../../common/remote/activitypub/renderer/key';
+import context from '../../remote/activitypub/renderer/context';
+import render from '../../remote/activitypub/renderer/key';
 import config from '../../conf';
 import withUser from './with-user';
 
diff --git a/src/server/activitypub/user.ts b/src/server/activitypub/user.ts
index cfda409e2c..0d0b84bad4 100644
--- a/src/server/activitypub/user.ts
+++ b/src/server/activitypub/user.ts
@@ -1,7 +1,7 @@
 import * as express from 'express';
 import config from '../../conf';
-import context from '../../common/remote/activitypub/renderer/context';
-import render from '../../common/remote/activitypub/renderer/person';
+import context from '../../remote/activitypub/renderer/context';
+import render from '../../remote/activitypub/renderer/person';
 import withUser from './with-user';
 
 const respond = withUser(username => `${config.url}/@${username}`, (user, req, res) => {
diff --git a/src/server/activitypub/with-user.ts b/src/server/activitypub/with-user.ts
index ed289b641b..18f2e50ffd 100644
--- a/src/server/activitypub/with-user.ts
+++ b/src/server/activitypub/with-user.ts
@@ -1,4 +1,4 @@
-import parseAcct from '../../common/user/parse-acct';
+import parseAcct from '../../misc/user/parse-acct';
 import User from '../../models/user';
 
 export default (redirect, respond) => async (req, res, next) => {
diff --git a/src/server/api/bot/core.ts b/src/server/api/bot/core.ts
index d636cc26e7..0faf9b4e4c 100644
--- a/src/server/api/bot/core.ts
+++ b/src/server/api/bot/core.ts
@@ -3,10 +3,10 @@ import * as bcrypt from 'bcryptjs';
 
 import User, { IUser, init as initUser, ILocalUser } from '../../../models/user';
 
-import getPostSummary from '../../../common/get-post-summary';
-import getUserSummary from '../../../common/user/get-summary';
-import parseAcct from '../../../common/user/parse-acct';
-import getNotificationSummary from '../../../common/get-notification-summary';
+import getPostSummary from '../../../misc/get-post-summary';
+import getUserSummary from '../../../misc/user/get-summary';
+import parseAcct from '../../../misc/user/parse-acct';
+import getNotificationSummary from '../../../misc/get-notification-summary';
 
 const hmm = [
 	'？',
diff --git a/src/server/api/bot/interfaces/line.ts b/src/server/api/bot/interfaces/line.ts
index 58fbb217bc..a6e70a138f 100644
--- a/src/server/api/bot/interfaces/line.ts
+++ b/src/server/api/bot/interfaces/line.ts
@@ -7,9 +7,9 @@ import config from '../../../../conf';
 import BotCore from '../core';
 import _redis from '../../../../db/redis';
 import prominence = require('prominence');
-import getAcct from '../../../../common/user/get-acct';
-import parseAcct from '../../../../common/user/parse-acct';
-import getPostSummary from '../../../../common/get-post-summary';
+import getAcct from '../../../../misc/user/get-acct';
+import parseAcct from '../../../../misc/user/parse-acct';
+import getPostSummary from '../../../../misc/get-post-summary';
 
 const redis = prominence(_redis);
 
diff --git a/src/server/api/endpoints/drive/files/upload_from_url.ts b/src/server/api/endpoints/drive/files/upload_from_url.ts
index 01d8750553..ceb751a144 100644
--- a/src/server/api/endpoints/drive/files/upload_from_url.ts
+++ b/src/server/api/endpoints/drive/files/upload_from_url.ts
@@ -3,7 +3,7 @@
  */
 import $ from 'cafy';
 import { pack } from '../../../../../models/drive-file';
-import uploadFromUrl from '../../../../../common/drive/upload_from_url';
+import uploadFromUrl from '../../../../../common/drive/upload-from-url';
 
 /**
  * Create a file from a URL
diff --git a/src/server/api/endpoints/othello/games/show.ts b/src/server/api/endpoints/othello/games/show.ts
index 0d3b539652..0b1c9bc356 100644
--- a/src/server/api/endpoints/othello/games/show.ts
+++ b/src/server/api/endpoints/othello/games/show.ts
@@ -1,6 +1,6 @@
 import $ from 'cafy';
 import OthelloGame, { pack } from '../../../../../models/othello-game';
-import Othello from '../../../../../common/othello/core';
+import Othello from '../../../../../misc/othello/core';
 
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'gameId' parameter
diff --git a/src/server/api/endpoints/othello/match.ts b/src/server/api/endpoints/othello/match.ts
index 992b93d418..d9c46aae13 100644
--- a/src/server/api/endpoints/othello/match.ts
+++ b/src/server/api/endpoints/othello/match.ts
@@ -3,7 +3,7 @@ import Matching, { pack as packMatching } from '../../../../models/othello-match
 import OthelloGame, { pack as packGame } from '../../../../models/othello-game';
 import User from '../../../../models/user';
 import publishUserStream, { publishOthelloStream } from '../../../../common/event';
-import { eighteight } from '../../../../common/othello/maps';
+import { eighteight } from '../../../../misc/othello/maps';
 
 module.exports = (params, user) => new Promise(async (res, rej) => {
 	// Get 'userId' parameter
diff --git a/src/server/api/endpoints/posts/create.ts b/src/server/api/endpoints/posts/create.ts
index 4de9176947..c2e790a241 100644
--- a/src/server/api/endpoints/posts/create.ts
+++ b/src/server/api/endpoints/posts/create.ts
@@ -17,8 +17,8 @@ import { pack } from '../../../../models/post';
 import watch from '../../common/watch-post';
 import event, { pushSw, publishChannelStream } from '../../../../common/event';
 import notify from '../../../../common/notify';
-import getAcct from '../../../../common/user/get-acct';
-import parseAcct from '../../../../common/user/parse-acct';
+import getAcct from '../../../../misc/user/get-acct';
+import parseAcct from '../../../../misc/user/parse-acct';
 import config from '../../../../conf';
 
 /**
diff --git a/src/server/api/endpoints/users/show.ts b/src/server/api/endpoints/users/show.ts
index f7b37193b8..2b02799378 100644
--- a/src/server/api/endpoints/users/show.ts
+++ b/src/server/api/endpoints/users/show.ts
@@ -3,7 +3,7 @@
  */
 import $ from 'cafy';
 import User, { pack } from '../../../../models/user';
-import resolveRemoteUser from '../../../../common/remote/resolve-user';
+import resolveRemoteUser from '../../../../remote/resolve-user';
 
 const cursorOption = { fields: { data: false } };
 
diff --git a/src/server/api/limitter.ts b/src/server/api/limitter.ts
index 88ea6c3679..93e03f5e4f 100644
--- a/src/server/api/limitter.ts
+++ b/src/server/api/limitter.ts
@@ -3,7 +3,7 @@ import * as debug from 'debug';
 import limiterDB from '../../db/redis';
 import { Endpoint } from './endpoints';
 import { IAuthContext } from './authenticate';
-import getAcct from '../../common/user/get-acct';
+import getAcct from '../../misc/user/get-acct';
 
 const log = debug('misskey:limitter');
 
diff --git a/src/server/api/stream/othello-game.ts b/src/server/api/stream/othello-game.ts
index b11915f8ff..00367a824e 100644
--- a/src/server/api/stream/othello-game.ts
+++ b/src/server/api/stream/othello-game.ts
@@ -3,8 +3,8 @@ import * as redis from 'redis';
 import * as CRC32 from 'crc-32';
 import OthelloGame, { pack } from '../../../models/othello-game';
 import { publishOthelloGameStream } from '../../../common/event';
-import Othello from '../../../common/othello/core';
-import * as maps from '../../../common/othello/maps';
+import Othello from '../../../misc/othello/core';
+import * as maps from '../../../misc/othello/maps';
 import { ParsedUrlQuery } from 'querystring';
 
 export default function(request: websocket.request, connection: websocket.connection, subscriber: redis.RedisClient, user?: any): void {
diff --git a/src/server/webfinger.ts b/src/server/webfinger.ts
index 864bb4af52..41aeb5642d 100644
--- a/src/server/webfinger.ts
+++ b/src/server/webfinger.ts
@@ -1,5 +1,5 @@
 import config from '../conf';
-import parseAcct from '../common/user/parse-acct';
+import parseAcct from '../misc/user/parse-acct';
 import User from '../models/user';
 const express = require('express');
 
-- 
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