Refactoring

src/chart/hashtag.ts

@@ -0,0 +1,37 @@
+import autobind from 'autobind-decorator';
+import * as mongo from 'mongodb';
+import Chart, { Partial } from './';
+
+/**
+ * ハッシュタグに関するチャート
+ */
+type HashtagLog = {
+	/**
+	 * 投稿された数
+	 */
+	count: number;
+};
+
+class HashtagChart extends Chart<HashtagLog> {
+	constructor() {
+		super('hashtag', true);
+	}
+
+	@autobind
+	protected async getTemplate(init: boolean, latest?: HashtagLog): Promise<HashtagLog> {
+		return {
+			count: 0
+		};
+	}
+
+	@autobind
+	public async update(hashtag: string, userId: mongo.ObjectId) {
+		const inc: Partial<HashtagLog> = {
+			count: 1
+		};
+
+		await this.incIfUnique(inc, 'users', userId.toHexString(), hashtag);
+	}
+}
+
+export default new HashtagChart();