feat: add member cache; handle all role changes with RoleManagerPlugin; exit gracefully

backend/src/data/MemberCache.ts

@@ -0,0 +1,29 @@
+import moment from "moment-timezone";
+import { getRepository, Repository } from "typeorm";
+import { DAYS } from "../utils";
+import { BaseRepository } from "./BaseRepository";
+import { MemberCacheItem } from "./entities/MemberCacheItem";
+
+const STALE_PERIOD = 90 * DAYS;
+
+export class MemberCache extends BaseRepository {
+  #memberCache: Repository<MemberCacheItem>;
+
+  constructor() {
+    super();
+    this.#memberCache = getRepository(MemberCacheItem);
+  }
+
+  async deleteStaleData(): Promise<void> {
+    const cutoff = moment().subtract(STALE_PERIOD, "ms").format("YYYY-MM-DD");
+    await this.#memberCache.createQueryBuilder().where("last_seen < :cutoff", { cutoff }).delete().execute();
+  }
+
+  async deleteMarkedToBeDeletedEntries(): Promise<void> {
+    await this.#memberCache
+      .createQueryBuilder()
+      .where("delete_at IS NOT NULL AND delete_at <= NOW()")
+      .delete()
+      .execute();
+  }
+}