1 files changed, 94 insertions, 0 deletions
diff --git a/src/chart/per-user-notes.ts b/src/chart/per-user-notes.ts
new file mode 100644
index 0000000000..9558f5c839
--- /dev/null
+++ b/src/chart/per-user-notes.ts
@@ -0,0 +1,94 @@
+import autobind from 'autobind-decorator';
+import Chart, { Obj } from './';
+import Note, { INote } from '../models/note';
+import { IUser } from '../models/user';
+
+/**
+ * ユーザーごとの投稿に関するチャート
+ */
+type PerUserNotesLog = {
+	/**
+	 * 集計期間時点での、全投稿数
+	 */
+	total: number;
+
+	/**
+	 * 増加した投稿数
+	 */
+	inc: number;
+
+	/**
+	 * 減少した投稿数
+	 */
+	dec: number;
+
+	diffs: {
+		/**
+		 * 通常の投稿数の差分
+		 */
+		normal: number;
+
+		/**
+		 * リプライの投稿数の差分
+		 */
+		reply: number;
+
+		/**
+		 * Renoteの投稿数の差分
+		 */
+		renote: number;
+	};
+};
+
+class PerUserNotesChart extends Chart<PerUserNotesLog> {
+	constructor() {
+		super('perUserNotes', true);
+	}
+
+	@autobind
+	protected async getTemplate(init: boolean, latest?: PerUserNotesLog, group?: any): Promise<PerUserNotesLog> {
+		const [count] = init ? await Promise.all([
+			Note.count({ userId: group, deletedAt: null }),
+		]) : [
+			latest ? latest.total : 0
+		];
+
+		return {
+			total: count,
+			inc: 0,
+			dec: 0,
+			diffs: {
+				normal: 0,
+				reply: 0,
+				renote: 0
+			}
+		};
+	}
+
+	@autobind
+	public async update(user: IUser, note: INote, isAdditional: boolean) {
+		const update: Obj = {
+			diffs: {}
+		};
+
+		update.total = isAdditional ? 1 : -1;
+
+		if (isAdditional) {
+			update.inc = 1;
+		} else {
+			update.dec = 1;
+		}
+
+		if (note.replyId != null) {
+			update.diffs.reply = isAdditional ? 1 : -1;
+		} else if (note.renoteId != null) {
+			update.diffs.renote = isAdditional ? 1 : -1;
+		} else {
+			update.diffs.normal = isAdditional ? 1 : -1;
+		}
+
+		await this.inc(update, user._id);
+	}
+}
+
+export default new PerUserNotesChart();