create-release.yml

name: Release and Versioning
on:
  push:
    branches:
      - main
  pull_request_review:
    types: [submitted]      

jobs:
  create-release:
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:    
    - uses: actions/checkout@v4
      with:       
        fetch-depth: 0
        ref: ${{ github.event.pull_request.head.ref || github.ref_name }}

    - name: Check if version was already bumped
      id: version_check
      if: github.event.review.state == 'approved'
      run: |
        # Find the commit where the branch diverged from main
        git fetch origin main
        MERGE_BASE=$(git merge-base origin/main HEAD)
        
        # Check commits between merge-base and current HEAD
        COMMITS=$(git log $MERGE_BASE..HEAD --format=%B)
        if echo "$COMMITS" | grep -q "\[bot\] New pkg version:"; then
          VERSION_COMMIT=$(echo "$COMMITS" | grep "\[bot\] New pkg version:" | head -n 1)
          echo "::warning::Version was already bumped in this branch with commit message: $VERSION_COMMIT"
          echo "skip_bump=true" >> $GITHUB_OUTPUT
        else
          echo "No version bump found in branch commits"
          echo "skip_bump=false" >> $GITHUB_OUTPUT
        fi

    - name: Check PR labels
      id: check_labels
      if: |
        steps.version_check.outputs.skip_bump != 'true' && 
        github.event.review.state == 'approved'
      env:
        GH_TOKEN: ${{ github.token }}      
      run: |
        if [ "${{ github.event_name }}" == "pull_request_review" ]; then
          PR_NUMBER=${{ github.event.pull_request.number }}
        else
          PR_NUMBER=$(gh pr list --state merged --json number --jq '.[0].number')
        fi

        LABELS=$(gh pr view "$PR_NUMBER" --json labels --jq '.labels[].name')
        echo "::notice::PR used to check version bump: #$PR_NUMBER"
        echo "::notice::PR labels: "[${LABELS//$'\n'/,}]""

        # Make script executable
        chmod +x ./.github/ci-scripts/pr-label-check.sh
        
        # Run the script and capture both output and exit code
        RELEASE_TYPE=$(./.github/ci-scripts/pr-label-check.sh $PR_NUMBER 2>&1) || {
          # If script exits with non-zero, output the error and exit
          echo "::error::Script failed with output: $RELEASE_TYPE"
          exit 1
        }

        # Only proceed if we have a valid release type
        if [ -z "$RELEASE_TYPE" ]; then
          echo "::error::No valid release type determined"
          exit 1
        fi

        echo "version=$RELEASE_TYPE" >> $GITHUB_OUTPUT
        echo "::notice::Release type: $RELEASE_TYPE"
        if [ "$RELEASE_TYPE" == "no-release" ]; then
          echo "::notice::PR is not flagged for release, skipping other steps"
        fi        

    - name: Bump version
      id: bump
      if: |
        steps.version_check.outputs.skip_bump != 'true' && 
        steps.check_labels.outputs.version != 'no-release' &&
        github.event.review.state == 'approved'
      run: |
        git config user.name "GitHub Actions"
        git config user.email "actions@github.com"
        if [ "${{ steps.check_labels.outputs.version }}" == "alpha" ]; then
          npm version -m "[bot] New pkg version: %s" --preid=alpha prerelease
        else
          npm version -m "[bot] New pkg version: %s" ${{ steps.check_labels.outputs.version }}
        fi
        git push

    - name: Create GitHub Release   
      if: |
        github.event_name == 'push' && 
        github.ref == 'refs/heads/main' && 
        steps.check_labels.outputs.version != 'no-release'
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      run: |
        VERSION=$(node -p "require('./package.json').version")
        gh release create "v${VERSION}" \
          --title "Release v${VERSION}" \
          --generate-notes \
          --prerelease \
          --target "${GITHUB_SHA}"