release-bot.yaml

name: Cherry-pick to Release Branch

on:
  issue_comment:
    types: [created]
  workflow_call:

jobs:
  cherry_pick:
    runs-on: ubuntu-latest
    steps:
      - name: Check for release command
        id: check_command
        uses: actions/github-script@v6
        with:
          github-token: ${{secrets.GITHUB_TOKEN}}
          script: |
            console.log('Starting script');
            const { issue, comment } = context.payload;
            
            // Debugging the values of issue and comment
            console.log('Issue:', JSON.stringify(issue, null, 2));
            console.log('Comment:', JSON.stringify(comment, null, 2));
            
            if (!issue) {
              console.log('No issue object found in the payload.');
              core.setOutput('release_valid', 'false');
              return;
            }
            
            if (!issue.pull_request) {
              console.log('This issue is not related to a pull request.');
              core.setOutput('release_valid', 'false');
              return;
            }

            if (!comment || !comment.body.startsWith('/release to ')) {
              console.log(`Comment body does not start with '/release to '. Comment: ${comment ? comment.body : 'undefined'}`);
              core.setOutput('release_valid', 'false');
              return;
            }
            
            console.log('Valid release command');
            const releaseBranch = comment.body.split('/release to ')[1].trim();
            console.log('Release branch:', releaseBranch);
            core.setOutput('release_valid', 'true');
            core.setOutput('release_branch', releaseBranch);
            core.setOutput('pr_number', issue.number);

      # Conditionally skip subsequent steps if the release command is not valid
      - name: Skip jobs if not a valid release command
        if: steps.check_command.outputs.release_valid == 'false'
        run: |
          echo "Skipping cherry-pick as the release command is not valid."
        continue-on-error: true

      - name: Checkout repository
        if: steps.check_command.outputs.release_valid == 'true'
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Setup Git
        if: steps.check_command.outputs.release_valid == 'true'
        run: |
          git config --global user.email "bot@tyk.io"
          git config --global user.name "Tyk Bot"

      - name: Install GitHub CLI
        if: steps.check_command.outputs.release_valid == 'true'
        run: |
          type -p curl >/dev/null || sudo apt install curl -y
          curl -fsSL https://cli.github.com/packages/githubcli-archive-keyring.gpg | sudo dd of=/usr/share/keyrings/githubcli-archive-keyring.gpg \
          && sudo chmod go+r /usr/share/keyrings/githubcli-archive-keyring.gpg \
          && echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/githubcli-archive-keyring.gpg] https://cli.github.com/packages stable main" | sudo tee /etc/apt/sources.list.d/github-cli.list > /dev/null \
          && sudo apt update \
          && sudo apt install gh -y

      - name: Get PR details
        if: steps.check_command.outputs.release_valid == 'true'
        id: pr_details
        run: |
          PR_DATA=$(gh pr view ${{ steps.check_command.outputs.pr_number }} --json headRefOid)
          COMMIT_SHA=$(echo $PR_DATA | jq -r .headRefOid)
          echo "COMMIT_SHA=${COMMIT_SHA}" >> $GITHUB_OUTPUT

      - name: Cherry-pick commit
        if: steps.check_command.outputs.release_valid == 'true'
        id: cherry_pick
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          GITHUB_REPO: ${{ github.repository }}
          GITHUB_BRANCH: ${{ steps.check_command.outputs.release_branch }}
          GITHUB_CHERRY_PICK_COMMIT: ${{ steps.pr_details.outputs.COMMIT_SHA }}
        run: |
          set -e
          BRANCH_NAME="merge/${GITHUB_BRANCH}/${GITHUB_CHERRY_PICK_COMMIT}"
          git checkout $GITHUB_BRANCH || { echo "Failed to checkout branch $GITHUB_BRANCH"; exit 1; }
          git pull
          git checkout -b $BRANCH_NAME
          if ! git cherry-pick -x $GITHUB_CHERRY_PICK_COMMIT; then
            git add -A
            git -c core.editor=true cherry-pick --continue --no-edit || true
            MERGE_FAILED=1
          else
            MERGE_FAILED=0
          fi
          git push origin $BRANCH_NAME --force || { echo "Failed to push branch"; exit 1; }
          TITLE=$(git log --format=%B -n 1 $GITHUB_CHERRY_PICK_COMMIT | head -n 1)
          MESSAGE=$(git log --format=%B -n 1 $GITHUB_CHERRY_PICK_COMMIT | tail -n +3)
          if [ $MERGE_FAILED -eq 1 ]; then
              PR_URL=$(gh pr create --draft --title "Merging to $GITHUB_BRANCH: $TITLE" --body "$MESSAGE" --base $GITHUB_BRANCH --head $BRANCH_NAME)
          else
              PR_URL=$(gh pr create --title "Merging to $GITHUB_BRANCH: $TITLE" --body "$MESSAGE" --base $GITHUB_BRANCH --head $BRANCH_NAME)
              PR_ID="${PR_URL##*/}"
              gh pr merge --squash $PR_ID --auto --subject "Merging to $GITHUB_BRANCH: $TITLE" --body "$MESSAGE" 
          fi
          echo "PR_URL=$PR_URL" >> $GITHUB_OUTPUT
          echo "MERGE_FAILED=$MERGE_FAILED" >> $GITHUB_OUTPUT

      - name: Comment on PR
        if: steps.check_command.outputs.release_valid == 'true' && always()
        uses: actions/github-script@v6
        with:
          github-token: ${{secrets.GITHUB_TOKEN}}
          script: |
            const prUrl = '${{ steps.cherry_pick.outputs.PR_URL }}';
            const mergeFailed = '${{ steps.cherry_pick.outputs.MERGE_FAILED }}' === '1';
            let body;
            
            if ('${{ job.status }}' === 'success') {
              if (mergeFailed) {
                body = `⚠️ Cherry-pick operation completed with conflicts. A draft pull request has been created: ${prUrl}\n\nPlease resolve the conflicts manually.`;
              } else {
                body = `✅ Cherry-pick operation completed successfully. New pull request created: ${prUrl}`;
              }
            } else {
              body = '❌ Cherry-pick operation failed. Please check the action logs for more information.';
            }
            
            github.rest.issues.createComment({
              issue_number: ${{ steps.check_command.outputs.pr_number }},
              owner: context.repo.owner,
              repo: context.repo.name,
              body: body
            });