name: Update Changelog
on:
pull_request:
types: [closed]
branches: [main]
permissions:
contents: write
pull-requests: write # Need write for commenting
issues: write # PRs are issues, need this for commenting
jobs:
update-changelog:
# Only run if PR was merged (not closed without merge)
if: github.event.pull_request.merged == true
runs-on: ubuntu-latest
steps:
- name: Checkout repository
uses: actions/checkout@v4
with:
fetch-depth: 0 # Full history needed for git log
ref: main # Checkout main branch
- name: Setup Node.js
uses: actions/setup-node@v4
with:
node-version: '22'
cache: 'npm'
- name: Install dependencies
run: npm ci
- name: Extract commits from PR
id: extract
run: |
# Get commits from this PR
git log --format="%H|%s|%an|%ad" \
${{ github.event.pull_request.base.sha }}..${{ github.event.pull_request.head.sha }} \
> pr-commits.txt
# Count commits
COMMIT_COUNT=$(wc -l < pr-commits.txt | tr -d ' ')
echo "commit_count=$COMMIT_COUNT" >> $GITHUB_OUTPUT
echo "Extracted $COMMIT_COUNT commits from PR #${{ github.event.pull_request.number }}"
cat pr-commits.txt
- name: Update changelog
if: steps.extract.outputs.commit_count > 0
run: |
npx tsx scripts/changelog-update.ts pr-commits.txt
- name: Check if changelog changed
id: check
run: |
if git diff --quiet CHANGELOG.md; then
echo "changed=false" >> $GITHUB_OUTPUT
echo "No changelog updates (no conventional commits found)"
else
echo "changed=true" >> $GITHUB_OUTPUT
echo "Changelog updated with new entries"
fi
- name: Commit and push changelog
if: steps.check.outputs.changed == 'true'
run: |
git config user.name "thoughtbox-bot[bot]"
git config user.email "thoughtbox-bot[bot]@users.noreply.github.com"
git add CHANGELOG.md
git commit -m "docs: Update changelog for PR #${{ github.event.pull_request.number }}
Auto-generated from conventional commits in merged PR.
PR: ${{ github.event.pull_request.title }}
Author: @${{ github.event.pull_request.user.login }}
Co-Authored-By: thoughtbox-bot[bot] <thoughtbox-bot[bot]@users.noreply.github.com>"
git push
- name: Comment on PR
if: steps.check.outputs.changed == 'true'
uses: actions/github-script@v7
with:
script: |
github.rest.issues.createComment({
issue_number: context.issue.number,
owner: context.repo.owner,
repo: context.repo.repo,
body: '✅ Changelog updated automatically from conventional commits'
})
- name: Warn if no conventional commits
if: steps.extract.outputs.commit_count > 0 && steps.check.outputs.changed == 'false'
uses: actions/github-script@v7
with:
script: |
github.rest.issues.createComment({
issue_number: context.issue.number,
owner: context.repo.owner,
repo: context.repo.repo,
body: '⚠️ No conventional commits found in this PR. Changelog not updated.\n\nUse format: `type(scope): description`\n\nExamples:\n- `feat(loops): Add new feature`\n- `fix(analytics): Resolve bug`\n\nSee [Conventional Commits](https://www.conventionalcommits.org/) for details.'
})
