Handle large WeebCentral catalogs and correct MangaPill checkpoint monitoring

scraper/test/checkpoint-location.test.js

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+'use strict';
+
+const test = require('node:test');
+const assert = require('node:assert/strict');
+const fs = require('node:fs/promises');
+const os = require('node:os');
+const path = require('node:path');
+const { ScraperService } = require('../service');
+
+test('status and watchdog read the checkpoint for each source layout', async t => {
+  const root = await fs.mkdtemp(path.join(os.tmpdir(), 'mc-checkpoint-location-'));
+  t.after(() => fs.rm(root, { recursive: true, force: true }));
+  for (const [source, id, folder] of [
+    ['weebcentral', 'W1', '.mcscraper-work-W1'],
+    ['mangadex', 'D1', '.mcscraper-work-D1'],
+    ['mangapill', 'P1', '.mcscraper-work-mangapill-P1'],
+  ]) {
+    const dir = path.join(root, folder);
+    await fs.mkdir(dir);
+    await fs.writeFile(path.join(dir, 'job.json'), JSON.stringify({
+      status: 'downloading', publicationMode: 'incremental', jobCompleted: 3,
+      total: 10, updated: '2026-10-14T12:00:00Z', current: { downloadedPages: 4 },
+    }));
+    const service = Object.create(ScraperService.prototype);
+    service.libraryRoot = root;
+    const job = await service.jobState({ source, seriesId: id, kind: 'download' });
+    assert.equal(job.completed, 3, source);
+    assert.equal(job.current.downloadedPages, 4, source);
+  }
+});
+
+test('daemon refuses recovery when the checkpoint cannot be read', async () => {
+  const service = Object.create(ScraperService.prototype);
+  service.state = { paused: false, currentIds: { mangapill: 'job' },
+    queue: [{ id: 'job', source: 'mangapill', status: 'downloading' }] };
+  service.jobState = async () => null;
+  const result = await service.recover({ id: 'job', progressKey: '[0,0,"",0,""]' });
+  assert.deepEqual(result, { changed: false });
+  assert.equal(service.state.queue[0].stopReason, undefined);
+});