Refactoring

src/chart/users.ts

@@ -0,0 +1,75 @@
+import autobind from 'autobind-decorator';
+import Chart, { Obj } from './';
+import User, { IUser, isLocalUser } from '../models/user';
+
+/**
+ * ユーザーに関するチャート
+ */
+type UsersLog = {
+	local: {
+		/**
+		 * 集計期間時点での、全ユーザー数
+		 */
+		total: number;
+
+		/**
+		 * 増加したユーザー数
+		 */
+		inc: number;
+
+		/**
+		 * 減少したユーザー数
+		 */
+		dec: number;
+	};
+
+	remote: UsersLog['local'];
+};
+
+class UsersChart extends Chart<UsersLog> {
+	constructor() {
+		super('users');
+	}
+
+	@autobind
+	protected async getTemplate(init: boolean, latest?: UsersLog): Promise<UsersLog> {
+		const [localCount, remoteCount] = init ? await Promise.all([
+			User.count({ host: null }),
+			User.count({ host: { $ne: null } })
+		]) : [
+			latest ? latest.local.total : 0,
+			latest ? latest.remote.total : 0
+		];
+
+		return {
+			local: {
+				total: localCount,
+				inc: 0,
+				dec: 0
+			},
+			remote: {
+				total: remoteCount,
+				inc: 0,
+				dec: 0
+			}
+		};
+	}
+
+	@autobind
+	public async update(user: IUser, isAdditional: boolean) {
+		const update: Obj = {};
+
+		update.total = isAdditional ? 1 : -1;
+		if (isAdditional) {
+			update.inc = 1;
+		} else {
+			update.dec = 1;
+		}
+
+		await this.inc({
+			[isLocalUser(user) ? 'local' : 'remote']: update
+		});
+	}
+}
+
+export default new UsersChart();