fix: recover WeChat page thumbnail delivery

2026-07-22 11:51:15 +08:00
parent 57d2c14fca
commit cb62b36cd5
13 changed files with 366 additions and 26 deletions
@@ -6,12 +6,14 @@ import test from 'node:test';
 import {
  collectWechatGeneratedImages,
  extractMindspaceCoverPath,
+  repairUnambiguousFreshWechatPageThumbnail,
  verifyFreshWechatPageThumbnails,
 } from './generated-thumbnail.mjs';

 function generatedImageMessages({ jobId = 'job-1', htmlSrc = 'images/fresh.webp' } = {}) {
  const result = {
    ok: true,
+    purpose: 'hero',
    jobId,
    source: { mimeType: 'image/webp' },
    asset: {
@@ -115,3 +117,60 @@ test('auxiliary admin pages do not require a separate generated thumbnail', () =
    fs.rmSync(root, { recursive: true, force: true });
  }
 });
+
+test('one current-run hero repairs one page from the current write snapshot and re-verifies', () => {
+  const root = fs.mkdtempSync(path.join(os.tmpdir(), 'wechat-repair-cover-'));
+  try {
+    const htmlPath = path.join(root, 'page.html');
+    const diskHtml = '<html><head><meta name="mindspace-cover" content=\'{"tag":"页面","subtitle":"磁盘旧副本"}\'></head><body>disk copy</body></html>';
+    const currentRunHtml = '<html><head><meta name="mindspace-cover" content=\'{"tag":"页面","subtitle":"本轮副本"}\'></head><body>current run copy</body></html>';
+    fs.writeFileSync(htmlPath, diskHtml, 'utf8');
+    const artifacts = [{ localPath: htmlPath, relativePath: 'public/page.html' }];
+    const images = collectWechatGeneratedImages(generatedImageMessages());
+
+    const failed = verifyFreshWechatPageThumbnails(artifacts, images);
+    assert.equal(failed.reason, 'missing_generated_cover');
+    const repaired = repairUnambiguousFreshWechatPageThumbnail({
+      artifacts,
+      images,
+      currentRunHtmlArtifacts: [{ relativePath: 'public/page.html', content: currentRunHtml }],
+      verificationReason: failed.reason,
+    });
+
+    assert.equal(repaired.ok, true);
+    assert.equal(repaired.restoredCurrentRunHtml, true);
+    const written = fs.readFileSync(htmlPath, 'utf8');
+    assert.match(written, /current run copy/);
+    assert.doesNotMatch(written, /disk copy/);
+    assert.equal(extractMindspaceCoverPath(written), 'images/fresh.webp');
+    assert.equal(verifyFreshWechatPageThumbnails(artifacts, images).ok, true);
+  } finally {
+    fs.rmSync(root, { recursive: true, force: true });
+  }
+});
+
+test('thumbnail repair refuses an ambiguous page-to-image mapping without changing the page', () => {
+  const root = fs.mkdtempSync(path.join(os.tmpdir(), 'wechat-ambiguous-repair-'));
+  try {
+    const htmlPath = path.join(root, 'page.html');
+    const original = '<meta name="mindspace-cover" content=\'{"tag":"页面"}\'>';
+    fs.writeFileSync(htmlPath, original, 'utf8');
+    const artifacts = [{ localPath: htmlPath, relativePath: 'public/page.html' }];
+    const images = collectWechatGeneratedImages([
+      ...generatedImageMessages({ jobId: 'job-1', htmlSrc: 'images/one.webp' }),
+      ...generatedImageMessages({ jobId: 'job-2', htmlSrc: 'images/two.webp' }),
+    ]);
+
+    const repaired = repairUnambiguousFreshWechatPageThumbnail({
+      artifacts,
+      images,
+      verificationReason: 'missing_generated_cover',
+    });
+
+    assert.equal(repaired.ok, false);
+    assert.equal(repaired.reason, 'ambiguous_page_image_mapping');
+    assert.equal(fs.readFileSync(htmlPath, 'utf8'), original);
+  } finally {
+    fs.rmSync(root, { recursive: true, force: true });
+  }
+});