use MangaDex to better find links between AniList and MangaUpdates

backend/src/cache/CacheUtil.ts

@@ -0,0 +1,23 @@
+import * as fs from 'fs';
+
+export type CacheEntry = { data: string, lastUpdateMs: number }
+
+export function loadJson(file: string): Map<string, CacheEntry> {
+  try {
+    const data = fs.readFileSync(file, {encoding: 'utf8', flag: 'r'});
+    const json = JSON.parse(data);
+    return new Map<string, CacheEntry>(Object.entries(json));
+  } catch (err) {
+    console.error('Failed to load cache from ' + file + ':' + (err as Error).message);
+    return new Map();
+  }
+}
+
+export function saveJson(file: string, map: Map<string, CacheEntry>): void {
+  try {
+    const data = JSON.stringify(Object.fromEntries(map.entries()));
+    fs.writeFileSync(file, data, {encoding: 'utf8', flag: 'w'});
+  } catch (err) {
+    console.error(err);
+  }
+}

backend/src/cache/MangaDexCache.ts

@@ -0,0 +1,39 @@
+import * as fs from 'fs';
+import {CacheEntry, loadJson, saveJson} from './CacheUtil';
+
+export class MangaDexCache {
+  private readonly FILE_CACHE_DIR = 'cache/mangadex';
+  private readonly FILE_SEARCH_BY_TITLE = this.FILE_CACHE_DIR + '/searchByTitle.json';
+
+  private readonly MAX_CACHE_AGE_SEARCH_BY_TITLE = 7 * 24 * 60 * 60 * 1000;
+
+  private _searchByTitle = new Map<string, CacheEntry>();
+
+  constructor() {
+    this.load();
+  }
+
+  private load(): void {
+    try {
+      fs.mkdirSync(this.FILE_CACHE_DIR, {recursive: true});
+    } catch (_) {
+    }
+    this._searchByTitle = loadJson(this.FILE_SEARCH_BY_TITLE);
+  }
+
+  getSearchByTitle(title: string): string | undefined {
+    const entry = this._searchByTitle.get(title);
+    return !entry || entry.lastUpdateMs + this.MAX_CACHE_AGE_SEARCH_BY_TITLE < Date.now() ? undefined : entry.data;
+  }
+
+  putSearchByTitle(title: string, value: string): void {
+    this._searchByTitle.set(title, {data: value, lastUpdateMs: Date.now()});
+    saveJson(this.FILE_SEARCH_BY_TITLE, this._searchByTitle);
+  }
+
+  getOutOfDateSearch(): string[] {
+    return Array.from(this._searchByTitle.entries())
+      .filter(([title, entry]) => entry.lastUpdateMs + this.MAX_CACHE_AGE_SEARCH_BY_TITLE < Date.now())
+      .map(([title, entry]) => title);
+  }
+}

backend/src/cache/MangaUpdatesCache.ts

@@ -1,20 +1,22 @@
 import * as fs from 'fs';
-
+import {CacheEntry, loadJson, saveJson} from './CacheUtil';
-type CacheEntry = { data: string, lastUpdateMs: number }
 
 export class MangaUpdatesCache {
-  private readonly FILE_CACHE_DIR = 'cache';
+  private readonly FILE_CACHE_DIR = 'cache/mangaupdates';
   private readonly FILE_SEARCH_BY_TITLE = this.FILE_CACHE_DIR + '/searchByTitle.json';
   private readonly FILE_SERIES_BY_ID = this.FILE_CACHE_DIR + '/seriesById.json';
   private readonly FILE_SERIES_GROUPS_BY_ID = this.FILE_CACHE_DIR + '/seriesGroupsById.json';
+  private readonly FILE_SERIES_IDS_BY_WEBSITE_ID = this.FILE_CACHE_DIR + '/seriesIdsByWebsiteId.json';
 
   private readonly MAX_CACHE_AGE_SEARCH_BY_TITLE = 7 * 24 * 60 * 60 * 1000;
   private readonly MAX_CACHE_AGE_SERIES_BY_ID = 30 * 24 * 60 * 60 * 1000;
   private readonly MAX_CACHE_AGE_SERIES_GROUPS_BY_ID = 1 * 24 * 60 * 60 * 1000;
+  private readonly MAX_CACHE_AGE_SERIES_IDS_BY_WEBSITE_ID = 30 * 24 * 60 * 60 * 1000;
 
   private _searchByTitle = new Map<string, CacheEntry>();
   private _seriesById = new Map<string, CacheEntry>();
   private _seriesGroupsById = new Map<string, CacheEntry>();
+  private _seriesIdsByWebsiteId = new Map<string, CacheEntry>();
 
   constructor() {
     this.load();
@@ -22,32 +24,13 @@ export class MangaUpdatesCache {
 
   private load(): void {
     try {
-      fs.mkdirSync(this.FILE_CACHE_DIR);
+      fs.mkdirSync(this.FILE_CACHE_DIR, {recursive: true});
     } catch (_) {
     }
-    this._searchByTitle = this.loadJson(this.FILE_SEARCH_BY_TITLE);
+    this._searchByTitle = loadJson(this.FILE_SEARCH_BY_TITLE);
-    this._seriesById = this.loadJson(this.FILE_SERIES_BY_ID);
+    this._seriesById = loadJson(this.FILE_SERIES_BY_ID);
-    this._seriesGroupsById = this.loadJson(this.FILE_SERIES_GROUPS_BY_ID);
+    this._seriesGroupsById = loadJson(this.FILE_SERIES_GROUPS_BY_ID);
-  }
+    this._seriesIdsByWebsiteId = loadJson(this.FILE_SERIES_IDS_BY_WEBSITE_ID);
-
-  private loadJson(file: string): Map<string, CacheEntry> {
-    try {
-      const data = fs.readFileSync(file, {encoding: 'utf8', flag: 'r'});
-      const json = JSON.parse(data);
-      return new Map<string, CacheEntry>(Object.entries(json));
-    } catch (err) {
-      console.error('Failed to load cache from ' + file + ':' + (err as Error).message);
-      return new Map();
-    }
-  }
-
-  private saveJson(file: string, map: Map<string, CacheEntry>): void {
-    try {
-      const data = JSON.stringify(Object.fromEntries(map.entries()));
-      fs.writeFileSync(file, data, {encoding: 'utf8', flag: 'w'});
-    } catch (err) {
-      console.error(err);
-    }
   }
 
   getSearchByTitle(title: string): string | undefined {
@@ -65,19 +48,29 @@ export class MangaUpdatesCache {
     return !entry || entry.lastUpdateMs + this.MAX_CACHE_AGE_SERIES_GROUPS_BY_ID < Date.now() ? undefined : entry.data;
   }
 
+  getSeriesIdByWebsiteId(id: string): string | undefined {
+    const entry = this._seriesIdsByWebsiteId.get(id);
+    return !entry || entry.lastUpdateMs + this.MAX_CACHE_AGE_SERIES_IDS_BY_WEBSITE_ID < Date.now() ? undefined : entry.data;
+  }
+
   putSearchByTitle(title: string, value: string): void {
     this._searchByTitle.set(title, {data: value, lastUpdateMs: Date.now()});
-    this.saveJson(this.FILE_SEARCH_BY_TITLE, this._searchByTitle);
+    saveJson(this.FILE_SEARCH_BY_TITLE, this._searchByTitle);
   }
 
   putSeriesById(id: string, value: string): void {
     this._seriesById.set(id, {data: value, lastUpdateMs: Date.now()});
-    this.saveJson(this.FILE_SERIES_BY_ID, this._seriesById);
+    saveJson(this.FILE_SERIES_BY_ID, this._seriesById);
   }
 
   putSeriesGroupsById(id: string, value: string): void {
     this._seriesGroupsById.set(id, {data: value, lastUpdateMs: Date.now()});
-    this.saveJson(this.FILE_SERIES_GROUPS_BY_ID, this._seriesGroupsById);
+    saveJson(this.FILE_SERIES_GROUPS_BY_ID, this._seriesGroupsById);
+  }
+
+  putSeriesIdByWebsiteId(id: string, value: string): void {
+    this._seriesIdsByWebsiteId.set(id, {data: value, lastUpdateMs: Date.now()});
+    saveJson(this.FILE_SERIES_IDS_BY_WEBSITE_ID, this._seriesIdsByWebsiteId);
   }
 
   getOutOfDateSearch(): string[] {

backend/src/controller/MangaDexController.ts

@@ -0,0 +1,47 @@
+import {NextFunction, Request, Response} from 'express';
+import {MangaDexCache} from '../cache/MangaDexCache';
+
+export class MangaDexController {
+  private cache: MangaDexCache;
+
+  constructor(cache: MangaDexCache) {
+    this.cache = cache;
+  }
+
+  async manga(req: Request, res: Response, next: NextFunction): Promise<void> {
+    try {
+      const title = req.query.title as string | undefined;
+      if (!title || !title.trim().length) {
+        res.status(400).send('Title required!');
+        next();
+        return;
+      }
+
+      const fromCache = this.cache.getSearchByTitle(title);
+      if (fromCache) {
+        res.status(200).setHeader('Content-Type', 'application/json').send(fromCache);
+        next();
+        return;
+      }
+
+      //throttle
+      await new Promise((r) => setTimeout(r, 1000));
+
+      //fetch from manga updates
+      const fromApi = await fetch('https://api.mangadex.org/manga?title=' + encodeURIComponent(title));
+      if (fromApi.status !== 200) {
+        res.status(fromApi.status).send(fromApi.body);
+        next();
+        return;
+      }
+
+      const fromApiJson = await fromApi.text();
+      this.cache.putSearchByTitle(title, fromApiJson);
+
+      res.status(200).setHeader('Content-Type', 'application/json').send(fromApiJson);
+      next();
+    } catch (e) {
+      next(e);
+    }
+  }
+}

backend/src/controller/MangaUpdatesController.ts

@@ -103,4 +103,50 @@ export class MangaUpdatesController {
     res.status(200).setHeader('Content-Type', 'application/json').send(fromApiJson);
     next();
   }
+
+  async getSeriesIdFromWebsiteId(req: Request, res: Response, next: NextFunction): Promise<void> {
+    try {
+      const id = req.params.websiteId;
+      if (!id || !id.trim().length || !id.match(/^[0-9a-zA-Z]+$/)) {
+        res.status(400).send('Website id required!');
+        next();
+        return;
+      }
+
+      const fromCache = this.cache.getSeriesIdByWebsiteId(id);
+      if (fromCache) {
+        res.status(200).send(fromCache);
+        next();
+        return;
+      }
+
+      //throttle
+      await new Promise((r) => setTimeout(r, 1000));
+
+      //fetch from manga updates
+      const fromApi = await fetch(id.match(/^[0-9]+$/)
+        ? 'https://www.mangaupdates.com/series.html?id=' + id
+        : 'https://www.mangaupdates.com/series/' + id);
+      if (fromApi.status !== 200) {
+        res.status(fromApi.status).send(fromApi.body);
+        next();
+        return;
+      }
+
+      const fromApiHtml = await fromApi.text();
+      const match = fromApiHtml.match(/https:\/\/api.mangaupdates.com\/v1\/series\/([0-9]+)\/rss/);
+      if (!match) {
+        res.status(404).send('Series id not found in website!');
+        next();
+        return;
+      }
+      const json = JSON.stringify({website_id: id, series_id: parseInt(match[1]!)});
+      this.cache.putSeriesIdByWebsiteId(id, json);
+
+      res.status(200).send(json);
+      next();
+    } catch (e) {
+      next(e);
+    }
+  }
 }

backend/src/main.ts

@@ -5,12 +5,15 @@ import mangaUpdatesRouter from './router/MangaUpdatesRouter.js';
 import Scheduler from './schedule/Scheduler.js';
 import {MangaUpdatesCache} from './cache/MangaUpdatesCache.js';
 import * as fs from 'fs';
+import {MangaDexCache} from './cache/MangaDexCache';
+import mangaDexRouter from './router/MangaDexRouter';
 
 const config = JSON.parse(fs.readFileSync('config.json').toString())
 
 const app = express();
+const mangaDexCache = new MangaDexCache();
 const mangaUpdatesCache = new MangaUpdatesCache();
-const scheduler = new Scheduler(mangaUpdatesCache);
+const scheduler = new Scheduler(mangaDexCache, mangaUpdatesCache);
 
 scheduler.registerJobs();
 
@@ -20,6 +23,7 @@ app.use(express.json());
 
 //router
 app.use('/anilist', aniListRouter());
+app.use('/mangadex', mangaDexRouter(mangaDexCache));
 app.use('/mangaupdates', mangaUpdatesRouter(mangaUpdatesCache));
 app.use(express.static('_client')) //for production
 

backend/src/router/MangaDexRouter.ts

@@ -0,0 +1,10 @@
+import {Router} from 'express';
+import {MangaDexController} from '../controller/MangaDexController';
+import {MangaDexCache} from '../cache/MangaDexCache';
+
+export default function mangaDexRouter(cache: MangaDexCache): Router {
+  const controller = new MangaDexController(cache);
+  const router = Router();
+  router.get('/manga', controller.manga.bind(controller));
+  return router;
+}

backend/src/router/MangaUpdatesRouter.ts

@@ -8,5 +8,6 @@ export default function mangaUpdatesRouter(cache: MangaUpdatesCache): Router {
   router.post('/v1/series/search', controller.search.bind(controller));
   router.get('/v1/series/:id', controller.getById.bind(controller));
   router.get('/v1/series/:id/groups', controller.getGroupById.bind(controller));
+  router.get('/series_id_from_website_id/:websiteId', controller.getSeriesIdFromWebsiteId.bind(controller));
   return router;
 }

backend/src/schedule/MangaDexCacheRenewJob.ts

@@ -0,0 +1,28 @@
+import IJob from './IJob';
+import MangaDexCacheRenewService from '../service/MangaDexCacheRenewService';
+import {MangaDexCache} from '../cache/MangaDexCache';
+
+export default class MangaDexCacheRenewJob implements IJob<void> {
+  private readonly service: MangaDexCacheRenewService;
+  private lock: boolean = false;
+
+  constructor(cache: MangaDexCache) {
+    this.service = new MangaDexCacheRenewService(cache);
+  }
+
+  get schedule(): Date | string {
+    return '0 0 * * * *'; //every hour
+  }
+
+  async execute(): Promise<void> {
+    if (this.lock) {
+      return;
+    }
+    this.lock = true;
+    try {
+      await this.service.renew();
+    } finally {
+      this.lock = false;
+    }
+  }
+}

backend/src/schedule/Scheduler.ts

@@ -2,13 +2,16 @@ import {MangaUpdatesCache} from '../cache/MangaUpdatesCache.js';
 import IJob from './IJob.js';
 import MangaUpdateCacheRenewJob from './MangaUpdateCacheRenewJob.js';
 import {gracefulShutdown, scheduleJob} from 'node-schedule';
+import {MangaDexCache} from '../cache/MangaDexCache';
+import MangaDexCacheRenewJob from './MangaDexCacheRenewJob';
 
 export default class Scheduler {
   private readonly jobs: IJob<any>[] = [];
 
-  constructor(cache: MangaUpdatesCache) {
+  constructor(mangaDexCache: MangaDexCache, mangaUpdatesCache: MangaUpdatesCache) {
     this.jobs.push(
-      new MangaUpdateCacheRenewJob(cache),
+      new MangaDexCacheRenewJob(mangaDexCache),
+      new MangaUpdateCacheRenewJob(mangaUpdatesCache),
     );
   }
 

backend/src/service/MangaDexCacheRenewService.ts

@@ -0,0 +1,37 @@
+import {MangaDexCache} from '../cache/MangaDexCache';
+
+export default class MangaDexCacheRenewService {
+  private static readonly delay = 3000;
+
+  private readonly cache: MangaDexCache;
+
+  constructor(cache: MangaDexCache) {
+    this.cache = cache;
+  }
+
+  async renew(): Promise<void> {
+    console.log('Renewing MangaDex cache ...');
+    await this.renewMedia();
+    console.log('Renewing MangaDex cache done');
+  }
+
+  async renewMedia(): Promise<void> {
+    const titles = this.cache.getOutOfDateSearch();
+    console.log(titles.length + ' out-of-date media');
+
+    for (let title of titles) {
+      await new Promise((r) => setTimeout(r, MangaDexCacheRenewService.delay));
+      try {
+        const fromApi = await fetch('https://api.mangadex.org/manga?title=' + encodeURIComponent(title));
+        if (fromApi.status !== 200) {
+          continue;
+        }
+
+        const fromApiJson = await fromApi.text();
+        this.cache.putSearchByTitle(title, fromApiJson);
+      } catch (e) {
+        console.error(e);
+      }
+    }
+  }
+}

backend/src/service/MangaUpdateCacheRenewService.ts

@@ -10,11 +10,11 @@ export default class MangaUpdateCacheRenewService {
   }
 
   async renew(): Promise<void> {
-    console.log('Renewing cache ...');
+    console.log('Renewing MangaUpdates cache ...');
     await this.renewRelations();
     await this.renewSeries();
     await this.renewUpdates();
-    console.log('Renewing cache done');
+    console.log('Renewing MangaUpdates cache done');
   }
 
   async renewRelations(): Promise<void> {

frontend/src/components/navbar/MangaUpdatesUpdater.vue

@@ -1,5 +1,5 @@
 <script lang="ts">
-import {Progress} from '@/data/service/MangaUpdatesDataService';
+import {Progress} from '@/data/service/Progress';
 import {Options, Vue} from 'vue-class-component';
 import {ServiceStore} from '@/stores/ServiceStore';
 import {BSpinner} from 'bootstrap-vue-next';
@@ -13,7 +13,8 @@ import {toast} from 'vue3-toastify';
 })
 export default class MangaUpdatesUpdater extends Vue {
   //vars
-  progress: Progress = new Progress(this.onProgress.bind(this), this.onFinished.bind(this));
+  progressMangaDex: Progress = new Progress(this.onProgress.bind(this), () => {});
+  progressMangaUpdates: Progress = new Progress(this.onProgress.bind(this), this.onFinished.bind(this));
   progressType: string | null = null;
   progressValue: number | null = null;
   progressMax: number | null = null;
@@ -35,9 +36,10 @@ export default class MangaUpdatesUpdater extends Vue {
 
   //event handler
   async onUpdateMangaUpdatesDb(): Promise<void> {
-    this.progressType = 'starting';
+    this.progressType = 'general.starting';
     await this.tryAcquireWakeLock();
-    this.serviceStore.mangaUpdatesDataService.updateDb(this.progress);
+    await this.serviceStore.mangaDexDataService.updateDb(this.progressMangaDex);
+    await this.serviceStore.mangaUpdatesDataService.updateDb(this.progressMangaUpdates);
   };
 
   onProgress(type: string, progress: number, max: number): void {
@@ -50,7 +52,7 @@ export default class MangaUpdatesUpdater extends Vue {
     this.wakeLock?.release();
     this.wakeLock = null;
 
-    this.progressType = 'finished';
+    this.progressType = 'general.finished';
     this.progressValue = null;
     this.progressMax = null;
 
@@ -89,10 +91,10 @@ export default class MangaUpdatesUpdater extends Vue {
       <span class="text-nowrap">
         <BSpinner small class="me-2"/>
         <template v-if="progressValue === null || progressMax === null">
-          {{ $t('fetch.mangaUpdates.' + progressType) }}
+          {{ $t('fetch.' + progressType) }}
         </template>
         <template v-else>
-          {{ $t('fetch.mangaUpdates.' + progressType) + ': ' + (progressValue ?? 0) + '/' + (progressMax ?? 1) }}
+          {{ $t('fetch.' + progressType) + ': ' + (progressValue ?? 0) + '/' + (progressMax ?? 1) }}
         </template>
       </span>
     </template>

frontend/src/data/api/MangaDexApi.ts

@@ -0,0 +1,9 @@
+import {handleJsonResponse} from '@/data/api/ApiUtils';
+import type {MangaDexSearchResult} from '@/data/models/mangadex/MangaDexSearchResult';
+
+export default class MangaDexApi {
+  search(name: string): Promise<MangaDexSearchResult> {
+    const res = fetch('/mangadex/manga?title=' + encodeURIComponent(name));
+    return handleJsonResponse(res);
+  }
+}

frontend/src/data/api/MangaUpdatesApi.ts

@@ -3,6 +3,9 @@ import {handleJsonResponse} from '@/data/api/ApiUtils';
 import type {MangaUpdatesSearchResult} from '@/data/models/mangaupdates/MangaUpdatesSearchResult';
 import type {MangaUpdatesSeries} from '@/data/models/mangaupdates/MangaUpdatesSeries';
 import type {MangaUpdatesSeriesGroups} from '@/data/models/mangaupdates/MangaUpdatesSeriesGroups';
+import type {
+  MangaUpdatesWebsiteIdSeriesIdRelation
+} from '@/data/models/mangaupdates/MangaUpdatesWebsiteIdSeriesIdRelation';
 
 export default class MangaUpdatesApi {
   search(name: string): Promise<MangaUpdatesSearchResult> {
@@ -27,4 +30,9 @@ export default class MangaUpdatesApi {
     const res = fetch(`/mangaupdates/v1/series/${id}/groups`);
     return handleJsonResponse(res);
   }
+
+  seriesIdByWebsiteId(websiteId: number): Promise<MangaUpdatesWebsiteIdSeriesIdRelation> {
+    const res = fetch('/mangaupdates/series_id_from_website_id/' + websiteId);
+    return handleJsonResponse(res);
+  }
 }

frontend/src/data/models/mangadex/MangaDexMedia.ts

@@ -0,0 +1,66 @@
+export type MangaDexMedia = {
+  id: string, //uuid
+  type: 'manga' | string,
+  attributes: {
+    title: {
+      //2 letter language code: name
+      [key: string]: string,
+    },
+    altTitles: {
+      //2 letter language code: name
+      [key: string]: string
+    }[],
+    description: {
+      //2 letter language code: description
+      [key: string]: string
+    },
+    isLocked: boolean,
+    links?: {
+      al?: string, //anilist id
+      ap?: string, //human-readable title,
+      bw?: string, //'series/<id>',
+      kt?: string, //kt id
+      mu?: string, //mangaupdates id
+      nu?: string, //human-readable title,
+      amz?: string, //url
+      ebj?: string, //url
+      mal?: string, //myanimelist id
+      raw?: string, //url
+      engtl?: string, //url
+      [key: string]: string | undefined,
+    },
+    originalLanguage: string,//2 letter language code
+    lastVolume: string,
+    lastChapter: string,
+    publicationDemographic: 'shounen' | string,
+    status: 'ongoing' | string,
+    year: number,
+    contentRating: 'suggestive' | string,
+    tags: {
+      id: string, //uuid
+      type: 'tag',
+      attributes: {
+        name: {
+          //2 letter language code: name
+          [key: string]: string
+        },
+        description: {},
+        group: 'theme' | string,
+        version: number
+      },
+      relationships: []
+    }[],
+    state: 'published' | string,
+    chapterNumbersResetOnNewVolume: boolean,
+    createdAt: string, //iso date string
+    updatedAt: string, //iso date string
+    version: number,
+    availableTranslatedLanguages: string[], //2 letter language code
+    latestUploadedChapter: string, //uuid
+  },
+  relationships: {
+    id: string, //uuid
+    type: 'author' | 'artist' | 'cover_art' | 'adapted_from' | 'side_story' | string,
+    related?: 'main_story' | string,
+  }[]
+}

frontend/src/data/models/mangadex/MangaDexSearchResult.ts

@@ -0,0 +1,10 @@
+import type {MangaDexMedia} from '@/data/models/mangadex/MangaDexMedia';
+
+export type MangaDexSearchResult = {
+  result: 'ok' | string,
+  response: 'collection' | string,
+  data: MangaDexMedia[],
+  limit: number,
+  offset: number,
+  total: number
+}

frontend/src/data/models/mangaupdates/MangaUpdatesWebsiteIdSeriesIdRelation.ts

@@ -0,0 +1,4 @@
+export type MangaUpdatesWebsiteIdSeriesIdRelation = {
+  website_id: string;
+  series_id: number;
+}

frontend/src/data/service/MangaDexDataService.ts

@@ -0,0 +1,84 @@
+import {MangaStore} from '@/stores/MangaStore';
+import {DbStore} from '@/stores/DbStore';
+import {ApiError} from '@/data/api/ApiUtils';
+import MangaDexApi from '@/data/api/MangaDexApi';
+import {Progress} from '@/data/service/Progress';
+import MangaUpdatesApi from '@/data/api/MangaUpdatesApi';
+import type {MangaUpdatesRelation} from '@/data/models/mangaupdates/MangaUpdatesRelation';
+
+export default class MangaDexDataService {
+  private readonly mangaDexApi = new MangaDexApi();
+  private readonly mangaUpdatesApi = new MangaUpdatesApi();
+
+  updateDb(progress: Progress): Promise<void> {
+    const mangaStore = new MangaStore();
+    const dbStore = new DbStore();
+    return this.findMissingRelations(mangaStore, dbStore, progress)
+      .catch(err => console.error(err))
+      .then(_ => progress.onFinished());
+  }
+
+  private async findMissingRelations(mangaStore: MangaStore, dbStore: DbStore, progress: Progress): Promise<void> {
+    const allowedTypes = new Set(['manga'].map(e => e.toLowerCase()));
+
+    const media = await dbStore.aniListMangaRepository.getMedia();
+    const relations = await dbStore.mangaUpdatesRepository.getRelations();
+    const presentRelationIds = new Set(relations.map(e => e.aniListMediaId));
+
+    let i = 0;
+    for (const m of media) {
+      try {
+        if (presentRelationIds.has(m.id)) {
+          continue;
+        }
+
+        let matching: MangaUpdatesRelation[] = [];
+        for (let title of [m.title.native, m.title.romaji, m.title.english]) {
+          if (!title?.trim().length) {
+            continue;
+          }
+          let results;
+          try {
+            results = await this.mangaDexApi.search(title);
+          } catch (err) {
+            if (err instanceof ApiError && [400, 500].includes(err.statusCode)) {
+              console.debug(err);
+            } else {
+              console.error(err);
+            }
+            continue;
+          }
+          matching = results.data
+            .filter(e => allowedTypes.has(e.type))
+            .filter(e => e.attributes.links?.al?.match(/[0-9]+/) && e.attributes.links.mu)
+            .filter(e => parseInt(e.attributes.links!.al!) === m.id)
+            .map(e => ({
+              aniListMediaId: parseInt(e.attributes.links!.al!),
+              mangaUpdatesSeriesId: e.attributes.links!.mu! as any as number, //TODO cast is hack, make pretty
+            }));
+
+          for (let j = 0; j < matching.length; j++) {
+            try {
+              const websiteIdSeriesIdRelation = await this.mangaUpdatesApi.seriesIdByWebsiteId(matching[j].mangaUpdatesSeriesId);
+              matching[j].mangaUpdatesSeriesId = websiteIdSeriesIdRelation.series_id;
+            } catch(_) {
+              matching.splice(j--, 1);
+            }
+          }
+
+          if (matching.length > 0) {
+            break;
+          }
+        }
+
+        if (matching.length === 0) {
+          continue;
+        }
+
+        await mangaStore.addMangaUpdatesRelations([matching[0]]);
+      } finally {
+        await progress.onProgress('mangaDex.relations', ++i, media.length);
+      }
+    }
+  }
+}

frontend/src/data/service/MangaUpdatesDataService.ts

@@ -7,14 +7,15 @@ import stringSimilarity from 'string-similarity-js';
 import {ApiError} from '@/data/api/ApiUtils';
 import groupBy from '@/util';
 import {decode} from 'html-entities';
+import {Progress} from '@/data/service/Progress';
 
 export default class MangaUpdatesDataService {
   private readonly mangaUpdatesApi = new MangaUpdatesApi();
 
-  updateDb(progress: Progress): Progress {
+  updateDb(progress: Progress): Promise<void> {
     const mangaStore = new MangaStore();
     const dbStore = new DbStore();
-    this.findMissingRelations(mangaStore, dbStore, progress)
+    return this.findMissingRelations(mangaStore, dbStore, progress)
       .catch(err => {
         console.error(err);
       })
@@ -27,7 +28,6 @@ export default class MangaUpdatesDataService {
         console.error(err);
       })
       .then(_ => progress.onFinished());
-    return progress;
   }
 
   private async findMissingRelations(mangaStore: MangaStore, dbStore: DbStore, progress: Progress): Promise<void> {
@@ -79,7 +79,7 @@ export default class MangaUpdatesDataService {
 
         await mangaStore.addMangaUpdatesRelations([{aniListMediaId: m.id, mangaUpdatesSeriesId: matching[0].record.series_id}]);
       } finally {
-        await progress.onProgress('relations', ++i, media.length);
+        await progress.onProgress('mangaUpdates.relations', ++i, media.length);
       }
     }
   }
@@ -108,7 +108,7 @@ export default class MangaUpdatesDataService {
         }
         await mangaStore.updateMangaUpdatesSeries([series]);
       } finally {
-        await progress.onProgress('series', ++i, relations.length);
+        await progress.onProgress('mangaUpdates.series', ++i, relations.length);
       }
     }
   }
@@ -148,30 +148,10 @@ export default class MangaUpdatesDataService {
           .map(chaptersOfGroup => chaptersOfGroup.reduce((l, r) => l.chapter > r.chapter ? l : r, chaptersOfGroup[0]));
         cachedChapterUpdates.push(...filtered)
       } finally {
-        await progress.onProgress('chapters', ++i, series.length);
+        await progress.onProgress('mangaUpdates.chapters', ++i, series.length);
       }
     }
     await mangaStore.updateMangaUpdatesChapters(cachedChapterUpdates);
   }
 }
 
-export type ProgressCallBackFn = (type: string, progress: number, max: number) => (Promise<void> | void);
-export type FinishCallBackFn = () => (Promise<void> | void);
-
-export class Progress {
-  readonly progress: ProgressCallBackFn;
-  readonly finish: FinishCallBackFn;
-
-  constructor(onProgress: ProgressCallBackFn, onFinish: FinishCallBackFn) {
-    this.progress = onProgress;
-    this.finish = onFinish;
-  }
-
-  async onProgress(type: string, progress: number, max: number): Promise<void> {
-    return (this.progress ? this.progress(type, progress, max) : Promise.resolve());
-  }
-
-  async onFinished(): Promise<void> {
-    return (this.finish ? this.finish() : Promise.resolve());
-  }
-}

frontend/src/data/service/Progress.ts

@@ -0,0 +1,20 @@
+export type ProgressCallBackFn = (type: string, progress: number, max: number) => (Promise<void> | void);
+export type FinishCallBackFn = () => (Promise<void> | void);
+
+export class Progress {
+  readonly progress: ProgressCallBackFn;
+  readonly finish: FinishCallBackFn;
+
+  constructor(onProgress: ProgressCallBackFn, onFinish: FinishCallBackFn) {
+    this.progress = onProgress;
+    this.finish = onFinish;
+  }
+
+  async onProgress(type: string, progress: number, max: number): Promise<void> {
+    return (this.progress ? this.progress(type, progress, max) : Promise.resolve());
+  }
+
+  async onFinished(): Promise<void> {
+    return (this.finish ? this.finish() : Promise.resolve());
+  }
+}

frontend/src/locale/de.ts

@@ -6,12 +6,17 @@ export const messagesDe = {
   },
   design: 'Design',
   fetch: {
+    general: {
+      finished: 'Fertig',
+      starting: 'Starte',
+    },
+    mangaDex: {
+      relations: 'Relationen',
+    },
     mangaUpdates: {
       chapters: 'Kapitel',
-      finished: 'Fertig',
       relations: 'Relationen',
       series: 'Kapitel',
-      starting: 'Starte',
     },
   },
   locale: 'Sprache',

frontend/src/locale/en.ts

@@ -4,12 +4,17 @@ export const messagesEn = {
   },
   design: 'Design',
   fetch: {
+    general: {
+      finished: 'Finished',
+      starting: 'Starting',
+    },
+    mangaDex: {
+      relations: 'Relations',
+    },
     mangaUpdates: {
       chapters: 'Chapters',
-      finished: 'Finished',
       relations: 'Relations',
       series: 'Series',
-      starting: 'Starting',
     },
   },
   locale: 'Language',

frontend/src/stores/ServiceStore.ts

@@ -1,5 +1,6 @@
 import {Pinia, Store} from 'pinia-class-component';
 import AniListDataService from '@/data/service/AniListDataService';
+import MangaDexDataService from '@/data/service/MangaDexDataService';
 import MangaUpdatesDataService from '@/data/service/MangaUpdatesDataService';
 
 @Store({
@@ -9,6 +10,7 @@ import MangaUpdatesDataService from '@/data/service/MangaUpdatesDataService';
 export class ServiceStore extends Pinia {
   //data
   private readonly intAniListDataService = new AniListDataService();
+  private readonly intMangaDexDataService = new MangaDexDataService();
   private readonly intMangaUpdatesDataService = new MangaUpdatesDataService();
 
   //getter
@@ -16,6 +18,10 @@ export class ServiceStore extends Pinia {
     return this.intAniListDataService;
   }
 
+  get mangaDexDataService(): MangaDexDataService {
+    return this.intMangaDexDataService;
+  }
+
   get mangaUpdatesDataService(): MangaUpdatesDataService {
     return this.intMangaUpdatesDataService;
   }

frontend/vite.config.ts

@@ -28,6 +28,10 @@ export default defineConfig({
         target: 'http://localhost:5000',
         changeOrigin: true,
       },
+      '^/mangadex/.*$': {
+        target: 'http://localhost:5000',
+        changeOrigin: true,
+      },
       '^/mangaupdates/.*$': {
         target: 'http://localhost:5000',
         changeOrigin: true,