refactor: move project to frontend directory

frontend/src/data/db/MangaUpdatesDb.ts

@@ -0,0 +1,73 @@
+import {type IDBPDatabase, openDB} from 'idb';
+import type {MangaUpdatesSeries} from '@/data/models/mangaupdates/MangaUpdatesSeries';
+import type {MangaUpdatesChapter} from '@/data/models/mangaupdates/MangaUpdatesChapter';
+
+export type MuDb = IDBPDatabase<MangaUpdatesDBSchema>;
+
+export default class MangaUpdatesDb {
+  private intDb: IDBPDatabase<MangaUpdatesDBSchema> | null = null;
+
+  get db(): IDBPDatabase<MangaUpdatesDBSchema> | null {
+    return this.intDb;
+  }
+
+  static async withDb<T>(fn: (db: MuDb) => Promise<T> | T): Promise<T> {
+    const db = new MangaUpdatesDb();
+    const idb = await db.open();
+    try {
+      return await fn(idb);
+    } finally {
+      db.close();
+    }
+  }
+
+  async open(): Promise<IDBPDatabase<MangaUpdatesDBSchema>> {
+    this.intDb = await openDB('mangaupdates', 1, {
+      upgrade(db, oldVersion, newVersion, transaction, event) {
+        switch (oldVersion) {
+          case 0:
+            const relation = db.createObjectStore('relation', {autoIncrement: true});
+            relation.createIndex('unique', ['aniListMediaId', 'mangaUpdatesSeriesId'], {unique: true});
+
+            const media = db.createObjectStore('series', {keyPath: 'series_id'});
+            media.createIndex('series_id', 'series_id', {unique: true});
+
+            const chapter = db.createObjectStore('chapter', {autoIncrement: true});
+            chapter.createIndex('series_id', 'series_id', {multiEntry: true});
+          //fall through
+          default:
+            break;
+        }
+      },
+    });
+    return this.intDb;
+  }
+
+  close(): void {
+    this.intDb?.close();
+  }
+}
+
+export type MangaUpdatesDBSchema = {
+  relation: {
+    key: 'id',
+    value: MangaUpdatesRelation,
+    indexes: {
+      unique: [number, number]
+    }
+  },
+  series: {
+    key: 'series_id';
+    value: MangaUpdatesSeries;
+    indexes: {
+      series_id: number
+    }
+  },
+  chapter: {
+    key: 'id';
+    value: MangaUpdatesChapter;
+    indexes: {
+      series_id: number
+    }
+  },
+}