13 files changed, 1285 insertions, 0 deletions
diff --git a/src/api/endpoints/posts/context.js b/src/api/endpoints/posts/context.js
new file mode 100644
index 0000000000..5f040b8505
--- /dev/null
+++ b/src/api/endpoints/posts/context.js
@@ -0,0 +1,83 @@
+'use strict';
+
+/**
+ * Module dependencies
+ */
+import * as mongo from 'mongodb';
+import Post from '../../models/post';
+import serialize from '../../serializers/post';
+
+/**
+ * Show a context of a post
+ *
+ * @param {Object} params
+ * @param {Object} user
+ * @return {Promise<object>}
+ */
+module.exports = (params, user) =>
+	new Promise(async (res, rej) =>
+{
+	// Get 'post_id' parameter
+	const postId = params.post_id;
+	if (postId === undefined || postId === null) {
+		return rej('post_id is required');
+	}
+
+	// Get 'limit' parameter
+	let limit = params.limit;
+	if (limit !== undefined && limit !== null) {
+		limit = parseInt(limit, 10);
+
+		// From 1 to 100
+		if (!(1 <= limit && limit <= 100)) {
+			return rej('invalid limit range');
+		}
+	} else {
+		limit = 10;
+	}
+
+	// Get 'offset' parameter
+	let offset = params.offset;
+	if (offset !== undefined && offset !== null) {
+		offset = parseInt(offset, 10);
+	} else {
+		offset = 0;
+	}
+
+	// Lookup post
+	const post = await Post.findOne({
+		_id: new mongo.ObjectID(postId)
+	});
+
+	if (post === null) {
+		return rej('post not found', 'POST_NOT_FOUND');
+	}
+
+	const context = [];
+	let i = 0;
+
+	async function get(id) {
+		i++;
+		const p = await Post.findOne({ _id: id });
+
+		if (i > offset) {
+			context.push(p);
+		}
+
+		if (context.length == limit) {
+			return;
+		}
+
+		if (p.reply_to_id) {
+			await get(p.reply_to_id);
+		}
+	}
+
+	if (post.reply_to_id) {
+		await get(post.reply_to_id);
+	}
+
+	// Serialize
+	res(await Promise.all(context.map(async post =>
+		await serialize(post, user))));
+});
diff --git a/src/api/endpoints/posts/create.js b/src/api/endpoints/posts/create.js
new file mode 100644
index 0000000000..cdcbf4f966
--- /dev/null
+++ b/src/api/endpoints/posts/create.js
@@ -0,0 +1,345 @@
+'use strict';
+
+/**
+ * Module dependencies
+ */
+import * as mongo from 'mongodb';
+import parse from '../../../common/text';
+import Post from '../../models/post';
+import User from '../../models/user';
+import Following from '../../models/following';
+import DriveFile from '../../models/drive-file';
+import serialize from '../../serializers/post';
+import createFile from '../../common/add-file-to-drive';
+import notify from '../../common/notify';
+import event from '../../event';
+
+/**
+ * 最大文字数
+ */
+const maxTextLength = 300;
+
+/**
+ * 添付できるファイルの数
+ */
+const maxMediaCount = 4;
+
+/**
+ * Create a post
+ *
+ * @param {Object} params
+ * @param {Object} user
+ * @param {Object} app
+ * @return {Promise<object>}
+ */
+module.exports = (params, user, app) =>
+	new Promise(async (res, rej) =>
+{
+	// Get 'text' parameter
+	let text = params.text;
+	if (text !== undefined && text !== null) {
+		text = text.trim();
+		if (text.length == 0) {
+			text = null;
+		} else if (text.length > maxTextLength) {
+			return rej('too long text');
+		}
+	} else {
+		text = null;
+	}
+
+	// Get 'media_ids' parameter
+	let media = params.media_ids;
+	let files = [];
+	if (media !== undefined && media !== null) {
+		media = media.split(',');
+
+		if (media.length > maxMediaCount) {
+			return rej('too many media');
+		}
+
+		// Drop duplicates
+		media = media.filter((x, i, s) => s.indexOf(x) == i);
+
+		// Fetch files
+		// forEach だと途中でエラーなどがあっても return できないので
+		// 敢えて for を使っています。
+		for (let i = 0; i < media.length; i++) {
+			const image = media[i];
+
+			// Fetch file
+			// SELECT _id
+			const entity = await DriveFile.findOne({
+				_id: new mongo.ObjectID(image),
+				user_id: user._id
+			}, {
+				_id: true
+			});
+
+			if (entity === null) {
+				return rej('file not found');
+			} else {
+				files.push(entity);
+			}
+		}
+	} else {
+		files = null;
+	}
+
+	// Get 'repost_id' parameter
+	let repost = params.repost_id;
+	if (repost !== undefined && repost !== null) {
+		// Fetch repost to post
+		repost = await Post.findOne({
+			_id: new mongo.ObjectID(repost)
+		});
+
+		if (repost == null) {
+			return rej('repostee is not found');
+		} else if (repost.repost_id && !repost.text && !repost.media_ids) {
+			return rej('cannot repost to repost');
+		}
+
+		// Fetch recently post
+		const latestPost = await Post.findOne({
+			user_id: user._id
+		}, {}, {
+			sort: {
+				_id: -1
+			}
+		});
+
+		// 直近と同じRepost対象かつ引用じゃなかったらエラー
+		if (latestPost &&
+				latestPost.repost_id &&
+				latestPost.repost_id.equals(repost._id) &&
+				text === null && files === null) {
+			return rej('二重Repostです(NEED TRANSLATE)');
+		}
+
+		// 直近がRepost対象かつ引用じゃなかったらエラー
+		if (latestPost &&
+				latestPost._id.equals(repost._id) &&
+				text === null && files === null) {
+			return rej('二重Repostです(NEED TRANSLATE)');
+		}
+	} else {
+		repost = null;
+	}
+
+	// Get 'reply_to_id' parameter
+	let replyTo = params.reply_to_id;
+	if (replyTo !== undefined && replyTo !== null) {
+		replyTo = await Post.findOne({
+			_id: new mongo.ObjectID(replyTo)
+		});
+
+		if (replyTo === null) {
+			return rej('reply to post is not found');
+		}
+
+		// 返信対象が引用でないRepostだったらエラー
+		if (replyTo.repost_id && !replyTo.text && !replyTo.media_ids) {
+			return rej('cannot reply to repost');
+		}
+	} else {
+		replyTo = null;
+	}
+
+	// テキストが無いかつ添付ファイルが無いかつRepostも無かったらエラー
+	if (text === null && files === null && repost === null) {
+		return rej('text, media_ids or repost_id is required');
+	}
+
+	// 投稿を作成
+	const inserted = await Post.insert({
+		created_at: new Date(),
+		media_ids: media ? files.map(file => file._id) : undefined,
+		reply_to_id: replyTo ? replyTo._id : undefined,
+		repost_id: repost ? repost._id : undefined,
+		text: text,
+		user_id: user._id,
+		app_id: app ? app._id : null
+	});
+
+	const post = inserted.ops[0];
+
+	// Serialize
+	const postObj = await serialize(post);
+
+	// Reponse
+	res(postObj);
+
+	//--------------------------------
+	// Post processes
+
+	let mentions = [];
+
+	function addMention(mentionee, type) {
+		// Reject if already added
+		if (mentions.some(x => x.equals(mentionee))) return;
+
+		// Add mention
+		mentions.push(mentionee);
+
+		// Publish event
+		if (!user._id.equals(mentionee)) {
+			event(mentionee, type, postObj);
+		}
+	}
+
+	// Publish event to myself's stream
+	event(user._id, 'post', postObj);
+
+	// Fetch all followers
+	const followers = await Following
+		.find({
+			followee_id: user._id,
+			// 削除されたドキュメントは除く
+			deleted_at: { $exists: false }
+		}, {
+			follower_id: true,
+			_id: false
+		})
+		.toArray();
+
+	// Publish event to followers stream
+	followers.forEach(following =>
+		event(following.follower_id, 'post', postObj));
+
+	// Increment my posts count
+	User.updateOne({ _id: user._id }, {
+		$inc: {
+			posts_count: 1
+		}
+	});
+
+	// If has in reply to post
+	if (replyTo) {
+		// Increment replies count
+		Post.updateOne({ _id: replyTo._id }, {
+			$inc: {
+				replies_count: 1
+			}
+		});
+
+		// 自分自身へのリプライでない限りは通知を作成
+		notify(replyTo.user_id, user._id, 'reply', {
+			post_id: post._id
+		});
+
+		// Add mention
+		addMention(replyTo.user_id, 'reply');
+	}
+
+	// If it is repost
+	if (repost) {
+		// Notify
+		const type = text ? 'quote' : 'repost';
+		notify(repost.user_id, user._id, type, {
+			post_id: post._id
+		});
+
+		// If it is quote repost
+		if (text) {
+			// Add mention
+			addMention(repost.user_id, 'quote');
+		} else {
+			// Publish event
+			if (!user._id.equals(repost.user_id)) {
+				event(repost.user_id, 'repost', postObj);
+			}
+		}
+
+		// 今までで同じ投稿をRepostしているか
+		const existRepost = await Post.findOne({
+			user_id: user._id,
+			repost_id: repost._id,
+			_id: {
+				$ne: post._id
+			}
+		});
+
+		if (!existRepost) {
+			// Update repostee status
+			Post.updateOne({ _id: repost._id }, {
+				$inc: {
+					repost_count: 1
+				}
+			});
+		}
+	}
+
+	// If has text content
+	if (text) {
+		// Analyze
+		const tokens = parse(text);
+
+		// Extract a hashtags
+		const hashtags = tokens
+			.filter(t => t.type == 'hashtag')
+			.map(t => t.hashtag)
+			// Drop dupulicates
+			.filter((v, i, s) => s.indexOf(v) == i);
+
+		// ハッシュタグをデータベースに登録
+		//registerHashtags(user, hashtags);
+
+		// Extract an '@' mentions
+		const atMentions = tokens
+			.filter(t => t.type == 'mention')
+			.map(m => m.username)
+			// Drop dupulicates
+			.filter((v, i, s) => s.indexOf(v) == i);
+
+		// Resolve all mentions
+		await Promise.all(atMentions.map(async (mention) => {
+			// Fetch mentioned user
+			// SELECT _id
+			const mentionee = await User
+				.findOne({
+					username_lower: mention.toLowerCase()
+				}, { _id: true });
+
+			// When mentioned user not found
+			if (mentionee == null) return;
+
+			// 既に言及されたユーザーに対する返信や引用repostの場合も無視
+			if (replyTo && replyTo.user_id.equals(mentionee._id)) return;
+			if (repost && repost.user_id.equals(mentionee._id)) return;
+
+			// Add mention
+			addMention(mentionee._id, 'mention');
+
+			// Create notification
+			notify(mentionee._id, user._id, 'mention', {
+				post_id: post._id
+			});
+
+			return;
+		}));
+	}
+
+	// Register to search database
+	if (text && config.elasticsearch.enable) {
+		const es = require('../../../db/elasticsearch');
+
+		es.index({
+			index: 'misskey',
+			type: 'post',
+			id: post._id.toString(),
+			body: {
+				text: post.text
+			}
+		});
+	}
+
+	// Append mentions data
+	if (mentions.length > 0) {
+		Post.updateOne({ _id: post._id }, {
+			$set: {
+				mentions: mentions
+			}
+		});
+	}
+});
diff --git a/src/api/endpoints/posts/favorites/create.js b/src/api/endpoints/posts/favorites/create.js
new file mode 100644
index 0000000000..d20a523d5d
--- /dev/null
+++ b/src/api/endpoints/posts/favorites/create.js
@@ -0,0 +1,56 @@
+'use strict';
+
+/**
+ * Module dependencies
+ */
+import * as mongo from 'mongodb';
+import Favorite from '../../models/favorite';
+import Post from '../../models/post';
+
+/**
+ * Favorite a post
+ *
+ * @param {Object} params
+ * @param {Object} user
+ * @return {Promise<object>}
+ */
+module.exports = (params, user) =>
+	new Promise(async (res, rej) =>
+{
+	// Get 'post_id' parameter
+	let postId = params.post_id;
+	if (postId === undefined || postId === null) {
+		return rej('post_id is required');
+	}
+
+	// Get favoritee
+	const post = await Post.findOne({
+		_id: new mongo.ObjectID(postId)
+	});
+
+	if (post === null) {
+		return rej('post not found');
+	}
+
+	// Check arleady favorited
+	const exist = await Favorite.findOne({
+		post_id: post._id,
+		user_id: user._id
+	});
+
+	if (exist !== null) {
+		return rej('already favorited');
+	}
+
+	// Create favorite
+	const inserted = await Favorite.insert({
+		created_at: new Date(),
+		post_id: post._id,
+		user_id: user._id
+	});
+
+	const favorite = inserted.ops[0];
+
+	// Send response
+	res();
+});
diff --git a/src/api/endpoints/posts/favorites/delete.js b/src/api/endpoints/posts/favorites/delete.js
new file mode 100644
index 0000000000..e250d1772c
--- /dev/null
+++ b/src/api/endpoints/posts/favorites/delete.js
@@ -0,0 +1,52 @@
+'use strict';
+
+/**
+ * Module dependencies
+ */
+import * as mongo from 'mongodb';
+import Favorite from '../../models/favorite';
+import Post from '../../models/post';
+
+/**
+ * Unfavorite a post
+ *
+ * @param {Object} params
+ * @param {Object} user
+ * @return {Promise<object>}
+ */
+module.exports = (params, user) =>
+	new Promise(async (res, rej) =>
+{
+	// Get 'post_id' parameter
+	let postId = params.post_id;
+	if (postId === undefined || postId === null) {
+		return rej('post_id is required');
+	}
+
+	// Get favoritee
+	const post = await Post.findOne({
+		_id: new mongo.ObjectID(postId)
+	});
+
+	if (post === null) {
+		return rej('post not found');
+	}
+
+	// Check arleady favorited
+	const exist = await Favorite.findOne({
+		post_id: post._id,
+		user_id: user._id
+	});
+
+	if (exist === null) {
+		return rej('already not favorited');
+	}
+
+	// Delete favorite
+	await Favorite.deleteOne({
+		_id: exist._id
+	});
+
+	// Send response
+	res();
+});
diff --git a/src/api/endpoints/posts/likes.js b/src/api/endpoints/posts/likes.js
new file mode 100644
index 0000000000..4778189fc6
--- /dev/null
+++ b/src/api/endpoints/posts/likes.js
@@ -0,0 +1,77 @@
+'use strict';
+
+/**
+ * Module dependencies
+ */
+import * as mongo from 'mongodb';
+import Post from '../../models/post';
+import Like from '../../models/like';
+import serialize from '../../serializers/user';
+
+/**
+ * Show a likes of a post
+ *
+ * @param {Object} params
+ * @param {Object} user
+ * @return {Promise<object>}
+ */
+module.exports = (params, user) =>
+	new Promise(async (res, rej) =>
+{
+	// Get 'post_id' parameter
+	const postId = params.post_id;
+	if (postId === undefined || postId === null) {
+		return rej('post_id is required');
+	}
+
+	// Get 'limit' parameter
+	let limit = params.limit;
+	if (limit !== undefined && limit !== null) {
+		limit = parseInt(limit, 10);
+
+		// From 1 to 100
+		if (!(1 <= limit && limit <= 100)) {
+			return rej('invalid limit range');
+		}
+	} else {
+		limit = 10;
+	}
+
+	// Get 'offset' parameter
+	let offset = params.offset;
+	if (offset !== undefined && offset !== null) {
+		offset = parseInt(offset, 10);
+	} else {
+		offset = 0;
+	}
+
+	// Get 'sort' parameter
+	let sort = params.sort || 'desc';
+
+	// Lookup post
+	const post = await Post.findOne({
+		_id: new mongo.ObjectID(postId)
+	});
+
+	if (post === null) {
+		return rej('post not found');
+	}
+
+	// Issue query
+	const likes = await Like
+		.find({
+			post_id: post._id,
+			deleted_at: { $exists: false }
+		}, {}, {
+			limit: limit,
+			skip: offset,
+			sort: {
+				_id: sort == 'asc' ? 1 : -1
+			}
+		})
+		.toArray();
+
+	// Serialize
+	res(await Promise.all(likes.map(async like =>
+		await serialize(like.user_id, user))));
+});
diff --git a/src/api/endpoints/posts/likes/create.js b/src/api/endpoints/posts/likes/create.js
new file mode 100644
index 0000000000..eb35c1e4b0
--- /dev/null
+++ b/src/api/endpoints/posts/likes/create.js
@@ -0,0 +1,93 @@
+'use strict';
+
+/**
+ * Module dependencies
+ */
+import * as mongo from 'mongodb';
+import Like from '../../../models/like';
+import Post from '../../../models/post';
+import User from '../../../models/user';
+import notify from '../../../common/notify';
+import event from '../../../event';
+import serializeUser from '../../../serializers/user';
+import serializePost from '../../../serializers/post';
+
+/**
+ * Like a post
+ *
+ * @param {Object} params
+ * @param {Object} user
+ * @return {Promise<object>}
+ */
+module.exports = (params, user) =>
+	new Promise(async (res, rej) =>
+{
+	// Get 'post_id' parameter
+	let postId = params.post_id;
+	if (postId === undefined || postId === null) {
+		return rej('post_id is required');
+	}
+
+	// Get likee
+	const post = await Post.findOne({
+		_id: new mongo.ObjectID(postId)
+	});
+
+	if (post === null) {
+		return rej('post not found');
+	}
+
+	// Myself
+	if (post.user_id.equals(user._id)) {
+		return rej('-need-translate-');
+	}
+
+	// Check arleady liked
+	const exist = await Like.findOne({
+		post_id: post._id,
+		user_id: user._id,
+		deleted_at: { $exists: false }
+	});
+
+	if (exist !== null) {
+		return rej('already liked');
+	}
+
+	// Create like
+	const inserted = await Like.insert({
+		created_at: new Date(),
+		post_id: post._id,
+		user_id: user._id
+	});
+
+	const like = inserted.ops[0];
+
+	// Send response
+	res();
+
+	// Increment likes count
+	Post.updateOne({ _id: post._id }, {
+		$inc: {
+			likes_count: 1
+		}
+	});
+
+	// Increment user likes count
+	User.updateOne({ _id: user._id }, {
+		$inc: {
+			likes_count: 1
+		}
+	});
+
+	// Increment user liked count
+	User.updateOne({ _id: post.user_id }, {
+		$inc: {
+			liked_count: 1
+		}
+	});
+
+	// Notify
+	notify(post.user_id, user._id, 'like', {
+		post_id: post._id
+	});
+});
diff --git a/src/api/endpoints/posts/likes/delete.js b/src/api/endpoints/posts/likes/delete.js
new file mode 100644
index 0000000000..b60df63af5
--- /dev/null
+++ b/src/api/endpoints/posts/likes/delete.js
@@ -0,0 +1,80 @@
+'use strict';
+
+/**
+ * Module dependencies
+ */
+import * as mongo from 'mongodb';
+import Like from '../../../models/like';
+import Post from '../../../models/post';
+import User from '../../../models/user';
+// import event from '../../../event';
+
+/**
+ * Unlike a post
+ *
+ * @param {Object} params
+ * @param {Object} user
+ * @return {Promise<object>}
+ */
+module.exports = (params, user) =>
+	new Promise(async (res, rej) =>
+{
+	// Get 'post_id' parameter
+	let postId = params.post_id;
+	if (postId === undefined || postId === null) {
+		return rej('post_id is required');
+	}
+
+	// Get likee
+	const post = await Post.findOne({
+		_id: new mongo.ObjectID(postId)
+	});
+
+	if (post === null) {
+		return rej('post not found');
+	}
+
+	// Check arleady liked
+	const exist = await Like.findOne({
+		post_id: post._id,
+		user_id: user._id,
+		deleted_at: { $exists: false }
+	});
+
+	if (exist === null) {
+		return rej('already not liked');
+	}
+
+	// Delete like
+	await Like.updateOne({
+		_id: exist._id
+	}, {
+		$set: {
+			deleted_at: new Date()
+		}
+	});
+
+	// Send response
+	res();
+
+	// Decrement likes count
+	Post.updateOne({ _id: post._id }, {
+		$inc: {
+			likes_count: -1
+		}
+	});
+
+	// Decrement user likes count
+	User.updateOne({ _id: user._id }, {
+		$inc: {
+			likes_count: -1
+		}
+	});
+
+	// Decrement user liked count
+	User.updateOne({ _id: post.user_id }, {
+		$inc: {
+			liked_count: -1
+		}
+	});
+});
diff --git a/src/api/endpoints/posts/mentions.js b/src/api/endpoints/posts/mentions.js
new file mode 100644
index 0000000000..6358e1f4a9
--- /dev/null
+++ b/src/api/endpoints/posts/mentions.js
@@ -0,0 +1,85 @@
+'use strict';
+
+/**
+ * Module dependencies
+ */
+import * as mongo from 'mongodb';
+import Post from '../../models/post';
+import getFriends from '../../common/get-friends';
+import serialize from '../../serializers/post';
+
+/**
+ * Get mentions of myself
+ *
+ * @param {Object} params
+ * @param {Object} user
+ * @return {Promise<object>}
+ */
+module.exports = (params, user) =>
+	new Promise(async (res, rej) =>
+{
+	// Get 'following' parameter
+	const following = params.following === 'true';
+
+	// Get 'limit' parameter
+	let limit = params.limit;
+	if (limit !== undefined && limit !== null) {
+		limit = parseInt(limit, 10);
+
+		// From 1 to 100
+		if (!(1 <= limit && limit <= 100)) {
+			return rej('invalid limit range');
+		}
+	} else {
+		limit = 10;
+	}
+
+	const since = params.since_id || null;
+	const max = params.max_id || null;
+
+	// Check if both of since_id and max_id is specified
+	if (since !== null && max !== null) {
+		return rej('cannot set since_id and max_id');
+	}
+
+	// Construct query
+	const query = {
+		mentions: user._id
+	};
+
+	const sort = {
+		_id: -1
+	};
+
+	if (following) {
+		const followingIds = await getFriends(user._id);
+
+		query.user_id = {
+			$in: followingIds
+		};
+	}
+
+	if (since) {
+		sort._id = 1;
+		query._id = {
+			$gt: new mongo.ObjectID(since)
+		};
+	} else if (max) {
+		query._id = {
+			$lt: new mongo.ObjectID(max)
+		};
+	}
+
+	// Issue query
+	const mentions = await Post
+		.find(query, {}, {
+			limit: limit,
+			sort: sort
+		})
+		.toArray();
+
+	// Serialize
+	res(await Promise.all(mentions.map(async mention =>
+		await serialize(mention, user)
+	)));
+});
diff --git a/src/api/endpoints/posts/replies.js b/src/api/endpoints/posts/replies.js
new file mode 100644
index 0000000000..5eab6f896f
--- /dev/null
+++ b/src/api/endpoints/posts/replies.js
@@ -0,0 +1,73 @@
+'use strict';
+
+/**
+ * Module dependencies
+ */
+import * as mongo from 'mongodb';
+import Post from '../../models/post';
+import serialize from '../../serializers/post';
+
+/**
+ * Show a replies of a post
+ *
+ * @param {Object} params
+ * @param {Object} user
+ * @return {Promise<object>}
+ */
+module.exports = (params, user) =>
+	new Promise(async (res, rej) =>
+{
+	// Get 'post_id' parameter
+	const postId = params.post_id;
+	if (postId === undefined || postId === null) {
+		return rej('post_id is required');
+	}
+
+	// Get 'limit' parameter
+	let limit = params.limit;
+	if (limit !== undefined && limit !== null) {
+		limit = parseInt(limit, 10);
+
+		// From 1 to 100
+		if (!(1 <= limit && limit <= 100)) {
+			return rej('invalid limit range');
+		}
+	} else {
+		limit = 10;
+	}
+
+	// Get 'offset' parameter
+	let offset = params.offset;
+	if (offset !== undefined && offset !== null) {
+		offset = parseInt(offset, 10);
+	} else {
+		offset = 0;
+	}
+
+	// Get 'sort' parameter
+	let sort = params.sort || 'desc';
+
+	// Lookup post
+	const post = await Post.findOne({
+		_id: new mongo.ObjectID(postId)
+	});
+
+	if (post === null) {
+		return rej('post not found', 'POST_NOT_FOUND');
+	}
+
+	// Issue query
+	const replies = await Post
+		.find({ reply_to_id: post._id }, {}, {
+			limit: limit,
+			skip: offset,
+			sort: {
+				_id: sort == 'asc' ? 1 : -1
+			}
+		})
+		.toArray();
+
+	// Serialize
+	res(await Promise.all(replies.map(async post =>
+		await serialize(post, user))));
+});
diff --git a/src/api/endpoints/posts/reposts.js b/src/api/endpoints/posts/reposts.js
new file mode 100644
index 0000000000..8b418a682f
--- /dev/null
+++ b/src/api/endpoints/posts/reposts.js
@@ -0,0 +1,85 @@
+'use strict';
+
+/**
+ * Module dependencies
+ */
+import * as mongo from 'mongodb';
+import Post from '../../models/post';
+import serialize from '../../serializers/post';
+
+/**
+ * Show a reposts of a post
+ *
+ * @param {Object} params
+ * @param {Object} user
+ * @return {Promise<object>}
+ */
+module.exports = (params, user) =>
+	new Promise(async (res, rej) =>
+{
+	// Get 'post_id' parameter
+	const postId = params.post_id;
+	if (postId === undefined || postId === null) {
+		return rej('post_id is required');
+	}
+
+	// Get 'limit' parameter
+	let limit = params.limit;
+	if (limit !== undefined && limit !== null) {
+		limit = parseInt(limit, 10);
+
+		// From 1 to 100
+		if (!(1 <= limit && limit <= 100)) {
+			return rej('invalid limit range');
+		}
+	} else {
+		limit = 10;
+	}
+
+	const since = params.since_id || null;
+	const max = params.max_id || null;
+
+	// Check if both of since_id and max_id is specified
+	if (since !== null && max !== null) {
+		return rej('cannot set since_id and max_id');
+	}
+
+	// Lookup post
+	const post = await Post.findOne({
+		_id: new mongo.ObjectID(postId)
+	});
+
+	if (post === null) {
+		return rej('post not found', 'POST_NOT_FOUND');
+	}
+
+	// Construct query
+	const sort = {
+		created_at: -1
+	};
+	const query = {
+		repost_id: post._id
+	};
+	if (since !== null) {
+		sort.created_at = 1;
+		query._id = {
+			$gt: new mongo.ObjectID(since)
+		};
+	} else if (max !== null) {
+		query._id = {
+			$lt: new mongo.ObjectID(max)
+		};
+	}
+
+	// Issue query
+	const reposts = await Post
+		.find(query, {}, {
+			limit: limit,
+			sort: sort
+		})
+		.toArray();
+
+	// Serialize
+	res(await Promise.all(reposts.map(async post =>
+		await serialize(post, user))));
+});
diff --git a/src/api/endpoints/posts/search.js b/src/api/endpoints/posts/search.js
new file mode 100644
index 0000000000..0f214ef7ae
--- /dev/null
+++ b/src/api/endpoints/posts/search.js
@@ -0,0 +1,138 @@
+'use strict';
+
+/**
+ * Module dependencies
+ */
+import * as mongo from 'mongodb';
+import Post from '../../models/post';
+import serialize from '../../serializers/post';
+const escapeRegexp = require('escape-regexp');
+
+/**
+ * Search a post
+ *
+ * @param {Object} params
+ * @param {Object} me
+ * @return {Promise<object>}
+ */
+module.exports = (params, me) =>
+	new Promise(async (res, rej) =>
+{
+	// Get 'query' parameter
+	let query = params.query;
+	if (query === undefined || query === null || query.trim() === '') {
+		return rej('query is required');
+	}
+
+	// Get 'offset' parameter
+	let offset = params.offset;
+	if (offset !== undefined && offset !== null) {
+		offset = parseInt(offset, 10);
+	} else {
+		offset = 0;
+	}
+
+	// Get 'max' parameter
+	let max = params.max;
+	if (max !== undefined && max !== null) {
+		max = parseInt(max, 10);
+
+		// From 1 to 30
+		if (!(1 <= max && max <= 30)) {
+			return rej('invalid max range');
+		}
+	} else {
+		max = 10;
+	}
+
+	// If Elasticsearch is available, search by it
+	// If not, search by MongoDB
+	(config.elasticsearch.enable ? byElasticsearch : byNative)
+		(res, rej, me, query, offset, max);
+});
+
+// Search by MongoDB
+async function byNative(res, rej, me, query, offset, max) {
+	const escapedQuery = escapeRegexp(query);
+
+	// Search posts
+	const posts = await Post
+		.find({
+			text: new RegExp(escapedQuery)
+		}, {
+			sort: {
+				_id: -1
+			},
+			limit: max,
+			skip: offset
+		})
+		.toArray();
+
+	// Serialize
+	res(await Promise.all(posts.map(async post =>
+		await serialize(post, me))));
+}
+
+// Search by Elasticsearch
+async function byElasticsearch(res, rej, me, query, offset, max) {
+	const es = require('../../db/elasticsearch');
+
+	es.search({
+		index: 'misskey',
+		type: 'post',
+		body: {
+			size: max,
+			from: offset,
+			query: {
+				simple_query_string: {
+					fields: ['text'],
+					query: query,
+					default_operator: 'and'
+				}
+			},
+			sort: [
+				{ _doc: 'desc' }
+			],
+			highlight: {
+				pre_tags: ['<mark>'],
+				post_tags: ['</mark>'],
+				encoder: 'html',
+				fields: {
+					text: {}
+				}
+			}
+		}
+	}, async (error, response) => {
+		if (error) {
+			console.error(error);
+			return res(500);
+		}
+
+		if (response.hits.total === 0) {
+			return res([]);
+		}
+
+		const hits = response.hits.hits.map(hit => new mongo.ObjectID(hit._id));
+
+		// Fetxh found posts
+		const posts = await Post
+			.find({
+				_id: {
+					$in: hits
+				}
+			}, {}, {
+				sort: {
+					_id: -1
+				}
+			})
+			.toArray();
+
+		posts.map(post => {
+			post._highlight = response.hits.hits.filter(hit => post._id.equals(hit._id))[0].highlight.text[0];
+		});
+
+		// Serialize
+		res(await Promise.all(posts.map(async post =>
+			await serialize(post, me))));
+	});
+}
diff --git a/src/api/endpoints/posts/show.js b/src/api/endpoints/posts/show.js
new file mode 100644
index 0000000000..19cdb74251
--- /dev/null
+++ b/src/api/endpoints/posts/show.js
@@ -0,0 +1,40 @@
+'use strict';
+
+/**
+ * Module dependencies
+ */
+import * as mongo from 'mongodb';
+import Post from '../../models/post';
+import serialize from '../../serializers/post';
+
+/**
+ * Show a post
+ *
+ * @param {Object} params
+ * @param {Object} user
+ * @return {Promise<object>}
+ */
+module.exports = (params, user) =>
+	new Promise(async (res, rej) =>
+{
+	// Get 'post_id' parameter
+	const postId = params.post_id;
+	if (postId === undefined || postId === null) {
+		return rej('post_id is required');
+	}
+
+	// Get post
+	const post = await Post.findOne({
+		_id: new mongo.ObjectID(postId)
+	});
+
+	if (post === null) {
+		return rej('post not found');
+	}
+
+	// Serialize
+	res(await serialize(post, user, {
+		serializeReplyTo: true,
+		includeIsLiked: true
+	}));
+});
diff --git a/src/api/endpoints/posts/timeline.js b/src/api/endpoints/posts/timeline.js
new file mode 100644
index 0000000000..489542da71
--- /dev/null
+++ b/src/api/endpoints/posts/timeline.js
@@ -0,0 +1,78 @@
+'use strict';
+
+/**
+ * Module dependencies
+ */
+import * as mongo from 'mongodb';
+import Post from '../../models/post';
+import getFriends from '../../common/get-friends';
+import serialize from '../../serializers/post';
+
+/**
+ * Get timeline of myself
+ *
+ * @param {Object} params
+ * @param {Object} user
+ * @param {Object} app
+ * @return {Promise<object>}
+ */
+module.exports = (params, user, app) =>
+	new Promise(async (res, rej) =>
+{
+	// Get 'limit' parameter
+	let limit = params.limit;
+	if (limit !== undefined && limit !== null) {
+		limit = parseInt(limit, 10);
+
+		// From 1 to 100
+		if (!(1 <= limit && limit <= 100)) {
+			return rej('invalid limit range');
+		}
+	} else {
+		limit = 10;
+	}
+
+	const since = params.since_id || null;
+	const max = params.max_id || null;
+
+	// Check if both of since_id and max_id is specified
+	if (since !== null && max !== null) {
+		return rej('cannot set since_id and max_id');
+	}
+
+	// ID list of the user itself and other users who the user follows
+	const followingIds = await getFriends(user._id);
+
+	// Construct query
+	const sort = {
+		_id: -1
+	};
+	const query = {
+		user_id: {
+			$in: followingIds
+		}
+	};
+	if (since !== null) {
+		sort._id = 1;
+		query._id = {
+			$gt: new mongo.ObjectID(since)
+		};
+	} else if (max !== null) {
+		query._id = {
+			$lt: new mongo.ObjectID(max)
+		};
+	}
+
+	// Issue query
+	const timeline = await Post
+		.find(query, {}, {
+			limit: limit,
+			sort: sort
+		})
+		.toArray();
+
+	// Serialize
+	res(await Promise.all(timeline.map(async post =>
+		await serialize(post, user)
+	)));
+});