ff-merge-merger.yml

name: fast-forward-merger
run-name: '🔀 FF Merge'

on:
  issue_comment:
    types:
      - created

permissions:
  contents: read

jobs:
  comment_checks:
    name: Check FF-Merge Conditions
    runs-on: ubuntu-latest
    permissions:
      contents: read
      issues: read
    outputs:
      valid_commenter: ${{ steps.ff_merge_check_valid_commenter.outputs.valid_commenter }}
      valid_comment: ${{ steps.ff_merge_check_comment_content.outputs.valid_comment }}
      valid_label: ${{ steps.ff_merge_check_issue_labels.outputs.valid_label }}
    steps:
      - name: Debug Event
        uses: actions/github-script@v7.0.1
        with:
          script: |
            console.log('GS_FULL_CTX:', context);
            console.log('GS_CTX_PAYLOAD:', context.payload);
            console.log('GS_CTX_REPO:', context.repo);
            console.log('GH_CTX:', JSON.stringify(${{ github }}));
            console.log('GH_CTX_EVENT:', JSON.stringify(${{ github.event }} ));

      - name: Check Comment Author 🕵️
        id: ff_merge_check_valid_commenter
        uses: actions/github-script@v7.0.1
        with:
          script: |
            const commentAuthorAssociation = context.payload.comment.author_association;
            const isMember = commentAuthorAssociation === 'MEMBER';
            
            if (isMember) {
              core.info('✅ The comment author is a member of the organization.');
            } else {
              core.warning('❌ The comment author is not a member of the organization.');
            }

            core.debug('COMMENT_AUTHOR:', commentAuthorAssociation);
            core.setOutput('valid_commenter', isMember);

      - name: Check Comment Content 📝
        id: ff_merge_check_comment_content
        if: ${{ steps.ff_merge_check_valid_commenter.outputs.valid_commenter }}
        uses: actions/github-script@v7.0.1
        with:
          script: |
            const commentBody = context.payload.comment.body;
            const isValidComment = commentBody === '/ff-merge';
            
            if (isValidComment) {
              core.info('✅ The comment content is valid.');
            } else {
              core.warning('❌ The comment content is invalid. (Expected: /ff-merge)');
            }

            core.debug('COMMENT_BODY:', commentBody);
            core.setOutput('valid_comment', isValidComment);

      - name: Check Issue Labels 🏷️
        id: ff_merge_check_issue_labels
        if: ${{ steps.ff_merge_check_comment_content.outputs.valid_comment }}
        uses: actions/github-script@v7.0.1
        with:
          script: |
            const issueLabels = context.payload.issue.labels;
            const hasFFMergeLabel = issueLabels.some((label) => label.name === 'ff-merge');
            
            if (hasFFMergeLabel) {
              core.info('✅ The issue has the "ff-merge" label.');
            } else {
              core.warning('❌ The issue does not have the "ff-merge" label.');
            }

            core.debug('ISSUE_LABELS:', issueLabels.map((label) => label.name));
            core.setOutput('valid_label', hasFFMergeLabel);

  exec_ff_merge:
    name: Execute Fast-Forward Merge
    runs-on: ubuntu-latest
    permissions:
      contents: write
      issues: write
      pull-requests: write
    needs: comment_checks
    if: ${{ needs.comment_checks.outputs.valid_commenter == 'true' && needs.comment_checks.outputs.valid_comment == 'true' && needs.comment_checks.outputs.valid_label == 'true' }}
    steps:
      - name: Lock PR 🔒
        id: lock_pr
        uses: actions/github-script@v7.0.1
        with:
          script: |
            try {
              await github.rest.issues.lock({
                'owner': context.repo.owner,
                'repo': context.repo.repo,
                'issue_number': context.issue.number,
                'lock_reason': 'resolved',
              });
              console.info('PR locked:', context.payload.issue.html_url);
            } catch (err) {
              console.error('Error locking PR:', err);
              core.setFailed(`Action failed with error ${err}`);
            }

#      - name: Fast-Forward Inspection 🕵️
#        id: ff_inspect
#        if: ${{ success() }}
#        uses: actions/github-script@v7.0.1
#        with:
#          script: |
#

#      - name: Fast-Forward Merge 🚀
#        id: ff_merge
#        if: ${{ success() }}
#        run: |
#          echo "✅ Fast-Forward Merge completed."
#          git checkout origin/${{ github.base_ref }}
#          git merge --ff-only origin/${{ github.event.pull_request.head.ref }}
#          git push origin ${{ github.base_ref }}