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Enhance preview comment functionality to list changed pages #238

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Enhance preview comment functionality to list changed pages #238

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43 changes: 39 additions & 4 deletions .github/workflows/preview.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -69,6 +69,8 @@ jobs:
- name: Comment PR with preview URL
if: success()
uses: actions/github-script@v9
env:
WRANGLER_OUTPUT: ${{ steps.upload.outputs.command-output }}
with:
script: |
const prNumber = parseInt('${{ steps.get-pr.outputs.pr-number }}');
Expand All @@ -83,19 +85,52 @@ jobs:
`$1${alias}-`,
);

// wrangler lists each newly uploaded asset as "+ /some/path/index.html"
const uploaded = (process.env.WRANGLER_OUTPUT || '')
.split('\n')
.map(line => line.replace(/\[[0-9;]*m/g, '').trim())
.map(line => /^\+\s+(\/\S*)$/.exec(line)?.[1])
.filter(path => path && path.endsWith('.html'));

const pages = [...new Set(uploaded)]
.map(path => path.replace(/index\.html$/, '').replace(/\.html$/, '/'))
.sort();

const pageList = pages.length
? pages
.map(path => `- [${path}](${previewUrl}${path})`)
.join('\n')
: '_No changed pages detected._';

const marker = '<!-- preview-url-comment -->';
const body = [
marker,
`🌐 Preview URL: ${previewUrl}`,
'',
'**Changed pages**',
pageList,
].join('\n');

const { data: comments } = await github.rest.issues.listComments({
owner: context.repo.owner,
repo: context.repo.repo,
issue_number: prNumber,
});
const alreadyCommented = comments.some(
c => c.user?.type === 'Bot' && c.body?.includes(previewUrl)
const existing = comments.find(
c => c.user?.type === 'Bot' && c.body?.includes(marker)
);
if (!alreadyCommented) {
if (existing) {
await github.rest.issues.updateComment({
owner: context.repo.owner,
repo: context.repo.repo,
comment_id: existing.id,
body,
});
} else {
await github.rest.issues.createComment({
owner: context.repo.owner,
repo: context.repo.repo,
issue_number: prNumber,
body: `🌐 Preview URL: ${previewUrl}`,
body,
});
}
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