Introduce per-instance chart (#4183)

* Introduce per-instance chart

* Implement chart view in client

* Handle note deleting

* More chart srcs

* Add drive stats

* Improve drive stats

* Fix bug

* Add icon

2 files changed, 18 insertions, 3 deletions

diff --git a/src/services/note/create.ts b/src/services/note/create.ts
index 0b71a9670c..126d698b08 100644
--- a/src/services/note/create.ts
+++ b/src/services/note/create.ts
@@ -24,6 +24,7 @@ import isQuote from '../../misc/is-quote';
 import notesChart from '../../services/chart/notes';
 import perUserNotesChart from '../../services/chart/per-user-notes';
 import activeUsersChart from '../../services/chart/active-users';
+import instanceChart from '../../services/chart/instance';
 
 import { erase, concat } from '../../prelude/array';
 import insertNoteUnread from './unread';
@@ -229,8 +230,7 @@ export default async (user: IUser, data: Option, silent = false) => new Promise<
 				}
 			});
 
-			// TODO
-			//perInstanceChart.newNote();
+			instanceChart.updateNote(i.host, true);
 		});
 	}
 
diff --git a/src/services/note/delete.ts b/src/services/note/delete.ts
index 8e8c20bfce..2b797545ed 100644
--- a/src/services/note/delete.ts
+++ b/src/services/note/delete.ts
@@ -1,5 +1,5 @@
 import Note, { INote } from '../../models/note';
-import { IUser, isLocalUser } from '../../models/user';
+import { IUser, isLocalUser, isRemoteUser } from '../../models/user';
 import { publishNoteStream } from '../stream';
 import renderDelete from '../../remote/activitypub/renderer/delete';
 import { renderActivity } from '../../remote/activitypub/renderer';
@@ -12,6 +12,9 @@ import config from '../../config';
 import NoteUnread from '../../models/note-unread';
 import read from './read';
 import DriveFile from '../../models/drive-file';
+import { registerOrFetchInstanceDoc } from '../register-or-fetch-instance-doc';
+import Instance from '../../models/instance';
+import instanceChart from '../../services/chart/instance';
 
 /**
  * 投稿を削除します。
@@ -91,4 +94,16 @@ export default async function(user: IUser, note: INote) {
 	// 統計を更新
 	notesChart.update(note, false);
 	perUserNotesChart.update(user, note, false);
+
+	if (isRemoteUser(user)) {
+		registerOrFetchInstanceDoc(user.host).then(i => {
+			Instance.update({ _id: i._id }, {
+				$inc: {
+					notesCount: -1
+				}
+			});
+
+			instanceChart.updateNote(i.host, false);
+		});
+	}
 }