create-tag-on-merge.yml

name: Create Tag on merge

on:
  workflow_dispatch:
  push:
    branches:
      - develop
    paths:
      - src/**
      - dist/**
      - scripts/**
      - package*.json
      - action.yml

env:
  SLACK_WEBHOOK: ${{ secrets.SLACK_WORKFLOWS_DEPLOYMENT_WEBHOOK }}

jobs:
  create-tag:
    runs-on: ubuntu-24.04
    timeout-minutes: 15

    steps:
      - uses: actions/checkout@v6
      - uses: actions/setup-node@v6
        with:
          node-version-file: .nvmrc

      - name: Create and push new tag
        run: npm run create-tag

      - name: Get latest commit
        id: get-commit
        run: echo "LAST_SHA=$(git rev-parse HEAD)" >> $GITHUB_ENV

      - name: Check for associated pull request and auto-deploy label
        id: should-deploy
        uses: actions/github-script@v8
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const { owner, repo } = context.repo;
            const commit_sha = '${{ env.LAST_SHA }}';
            const { data: prs } = await github.rest.repos.listPullRequestsAssociatedWithCommit({ commit_sha, owner, repo });
            if (prs?.length > 0) {
              const pull_number = prs[0].number;
              const { data: pr } = await github.rest.pulls.get({ owner, repo, pull_number });
              
              // Extract content from PR description - prioritize CHANGELOG if present
              let releaseNote = pr.title;

              if (pr.body) {
                // First, check for __CHANGELOG__ section
                const changelogMatch = pr.body.match(/__CHANGELOG__\s*(.*?)\s*_Generated by LinearB AI/s);
                
                if (changelogMatch) {
                  releaseNote = changelogMatch[1].trim();
                } else {
                  // Fallback to original gitstream placeholder extraction
                  const contentMatch = pr.body.match(/<!--start_gitstream_placeholder-->.*?### ✨ PR Description\s*(.*?)\s*_Generated by LinearB AI.*?<!--end_gitstream_placeholder-->/s);
                  
                  if (contentMatch) {
                    releaseNote = contentMatch[1].trim();
                  } else {
                    // New format without gitstream placeholders
                    const newFormatMatch = pr.body.match(/## ✨ PR Description\s*(.*?)\s*(?:__CHANGELOG__|_Generated by LinearB AI)/s);
                    
                    if (newFormatMatch) {
                      releaseNote = newFormatMatch[1].trim();
                    }
                  }
                }
              }
              
              core.setOutput('pr-title', pr.title);
              core.setOutput('release-notes', releaseNote);
              core.setOutput('pr-number', pr.number);

              // Check if CHANGELOG is present using the same logic as above
              const hasChangelog = pr.body && pr.body.match(/__CHANGELOG__\s*(.*?)\s*_Generated by LinearB AI/s);
              core.setOutput('has-changelog', !!hasChangelog);

              return pr.labels.some(label => label.name.includes('auto-deploy'));
            }
            return false;

      - name: Create GitHub Release & Deploy
        if: steps.should-deploy.outputs.result == 'true'
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          if [ "${{ steps.should-deploy.outputs.has-changelog }}" = "true" ]; then
            # Use custom release notes from CHANGELOG
            printf "## What's Changed\n\n%s in [#%s](https://github.com/${{ github.repository }}/pull/%s)\n\n%s\n" \
              "${{ steps.should-deploy.outputs.pr-title }}" \
              "${{ steps.should-deploy.outputs.pr-number }}" \
              "${{ steps.should-deploy.outputs.pr-number }}" \
              "${{ steps.should-deploy.outputs.release-notes }}" > release_notes.md
            gh release create $NEW_TAG --notes-file release_notes.md
          else
            # Use GitHub's automatic release notes generation
            gh release create $NEW_TAG --generate-notes
          fi

          git checkout $NEW_TAG
          npm run update-v2-tag

      - name: Update v2-lite
        if: steps.should-deploy.outputs.result == 'true'
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          git config --global user.name 'GitHub Actions Bot'
          git config --global user.email 'actions@github.com'
          git checkout v2-lite
          git checkout $NEW_TAG package.json package-lock.json dist/
          git add package.json package-lock.json dist/
          git commit -m "Update v2-lite to $NEW_TAG"
          git push origin v2-lite

      - name: Success Slack Notification
        if: steps.should-deploy.outputs.result == 'true' && success()
        uses: rtCamp/action-slack-notify@v2
        env:
          MSG_MINIMAL: true
          SLACK_WEBHOOK: ${{ env.SLACK_WEBHOOK }}
          SLACK_TITLE: ${{ github.repository }}
          SLACK_FOOTER: <${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}|workflow run> | <${{ github.server_url }}/${{ github.repository }}/releases/tag/${{ env.NEW_TAG }}|${{ env.NEW_TAG }}>
          SLACK_MESSAGE: |
            Released `${{ env.NEW_TAG }}` to `gitstream-github-action`
            ${{ steps.should-deploy.outputs.release-notes }}

      - name: Failure Slack Notification
        if: steps.should-deploy.outputs.result == 'true' && failure()
        uses: rtCamp/action-slack-notify@v2
        env:
          MSG_MINIMAL: true
          SLACK_WEBHOOK: ${{ env.SLACK_WEBHOOK }}
          SLACK_TITLE: ${{ github.repository }}
          SLACK_COLOR: ${{ job.status }}
          SLACK_FOOTER: <${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}|workflow run>
          SLACK_MESSAGE: Failed to release `${{ env.NEW_TAG }}` to `gitstream-github-action`