release_notes_comments_migration.yml

name: Copy Release Notes to Related Issues

on:
  pull_request:
    types: [closed]
    branches: [ master ]

jobs:
  copy_release_notes:
    if: github.event.pull_request.merged == true
    runs-on: ubuntu-latest
    steps:
      - name: Fetch PR Comments
        id: get-comments
        uses: actions/github-script@v7
        with:
          github-token: ${{secrets.GITHUB_TOKEN}}
          script: |
            const prNumber = context.payload.pull_request.number;
            const repoName = context.repo.repo;
            const repoOwner = context.repo.owner;
            const releaseNotesRegex = /release notes/i;
            
            const comments = await github.rest.issues.listComments({
              owner: repoOwner,
              repo: repoName,
              issue_number: prNumber,
            });
            
            const releaseNoteComment = comments.data.find(comment => releaseNotesRegex.test(comment.body));
            const releaseNoteBody = releaseNoteComment ? releaseNoteComment.body : '';
            console.log(`Release Note Body: ${releaseNoteBody}`);
            core.setOutput('releaseNoteBody', releaseNoteBody);

      - name: Print Extracted releaseNoteBody
        run: |
          echo "Extracted Release Note Body:"
          echo "${{ steps.get-comments.outputs.releaseNoteBody }}"
          echo "RELEASE_NOTE_BODY<<EOF" >> $GITHUB_ENV
          echo "${{ steps.get-comments.outputs.releaseNoteBody }}" >> $GITHUB_ENV
          echo "EOF" >> $GITHUB_ENV

      - name: Parse PR Description for Related Issues
        id: find-issues
        uses: actions/github-script@v7
        with:
          github-token: ${{secrets.GITHUB_TOKEN}}
          script: |
            const description = context.payload.pull_request.body;
            const issueNumbers = [];
            const regexPattern = /([Cc]los(e|es|ed)|[Ff]ix(es|ed)?|[Rr]esolv(e|es|ed))\s*#\s*([0-9]+)/g;
            
            let match;
            while ((match = regexPattern.exec(description)) !== null) {
              // This is necessary to avoid infinite loops with zero-width matches
              if (match.index === regexPattern.lastIndex) {
                regexPattern.lastIndex++;
              }
            
              // The actual issue number is in the last group of the match
              const issueNumber = match[match.length - 1];
              if (issueNumber) {
                issueNumbers.push(issueNumber);
              }
            }
            
            core.setOutput('issueNumbers', issueNumbers.join(', '));

      - name: Print Extracted Issue Numbers
        run: |
          echo "Extracted Issue Numbers: ${{ steps.find-issues.outputs.issueNumbers }}"
          echo "ISSUE_NUMBERS=${{ steps.find-issues.outputs.issueNumbers }}" >> $GITHUB_ENV

      - name: Post Comment to Issues
        if: ${{ steps.get-comments.outputs.releaseNoteBody }} && ${{ steps.find-issues.outputs.issueNumbers }}
        uses: actions/github-script@v7
        with:
          github-token: ${{secrets.GITHUB_TOKEN}}
          script: |
            const issueNumbers = process.env.ISSUE_NUMBERS;
            const commentBody = process.env.RELEASE_NOTE_BODY;
            const repoName = context.repo.repo;
            const repoOwner = context.repo.owner;
            
            for (const issueNumber of issueNumbers.split(', ')) {
              if (issueNumber && commentBody) {
                await github.rest.issues.createComment({
                  owner: repoOwner,
                  repo: repoName,
                  issue_number: issueNumber,
                  body: commentBody
                });            
              }
            }