create-release.yml

name: Create Release on PR Merge

on:
  pull_request:
    types:
      - closed
    branches:
      - master  # Change to your default branch if different (e.g., master)
  workflow_dispatch:

jobs:
  create_release:
    # Only run when PR is merged (not when just closed)
    if: github.event.pull_request.merged == true
    runs-on: ubuntu-latest
    permissions:
      contents: write  # Needed for creating releases
    steps:
      - name: Checkout code
        uses: actions/checkout@v3
        with:
          fetch-depth: 0  # Fetch all history for proper versioning and commit messages
      
      - name: Get latest release version
        id: get_version
        run: |
          # Get latest tag or set to v0.0.0 if none exists
          LATEST_TAG=$(git describe --tags --abbrev=0 2>/dev/null || echo "v0.0.0")
          echo "LATEST_TAG=${LATEST_TAG}" >> $GITHUB_ENV
          
          # Extract version numbers
          MAJOR=$(echo $LATEST_TAG | sed 's/v\([0-9]*\).\([0-9]*\).\([0-9]*\)/\1/')
          MINOR=$(echo $LATEST_TAG | sed 's/v\([0-9]*\).\([0-9]*\).\([0-9]*\)/\2/')
          PATCH=$(echo $LATEST_TAG | sed 's/v\([0-9]*\).\([0-9]*\).\([0-9]*\)/\3/')
          
          # Check PR labels to determine which version to increment
          if [[ "${{ contains(github.event.pull_request.labels.*.name, 'major') }}" == "true" ]]; then
            echo "Incrementing MAJOR version due to 'major' label"
            MAJOR=$((MAJOR + 1))
            MINOR=0
            PATCH=0
          elif [[ "${{ contains(github.event.pull_request.labels.*.name, 'minor') }}" == "true" ]]; then
            echo "Incrementing MINOR version due to 'minor' label"
            MINOR=$((MINOR + 1))
            PATCH=0
          else
            echo "Incrementing PATCH version (default)"
            PATCH=$((PATCH + 1))
          fi
          
          NEW_TAG="v$MAJOR.$MINOR.$PATCH"
          echo "Bumping version from $LATEST_TAG to $NEW_TAG"
          echo "NEW_TAG=${NEW_TAG}" >> $GITHUB_ENV

      - name: Generate Release Notes
        id: release_notes
        run: |
          # Get commits since last tag
          echo "Generating commit list since $LATEST_TAG"
          COMMITS=$(git log --pretty=format:"- %s (%h)" ${{ env.LATEST_TAG }}..HEAD)
          
          # Extract PR details
          PR_TITLE="${{ github.event.pull_request.title }}"
          PR_NUMBER="${{ github.event.pull_request.number }}"
          PR_BODY="${{ github.event.pull_request.body }}"
          PR_USER="${{ github.event.pull_request.merged_by.login }}"
          
          # Save release notes to environment variable
          echo "RELEASE_NOTES<<EOF" >> $GITHUB_ENV
          echo "## Release ${{ env.NEW_TAG }}" >> $GITHUB_ENV
          echo "" >> $GITHUB_ENV
          echo "### 🔄 Pull Request" >> $GITHUB_ENV
          echo "- #$PR_NUMBER: $PR_TITLE" >> $GITHUB_ENV
          echo "- Merged by @$PR_USER" >> $GITHUB_ENV
          echo "" >> $GITHUB_ENV
          
          if [[ -n "$PR_BODY" ]]; then
            echo "### 📝 Description" >> $GITHUB_ENV
            echo "$PR_BODY" >> $GITHUB_ENV
            echo "" >> $GITHUB_ENV
          fi
          
          echo "### 📦 Changes" >> $GITHUB_ENV
          echo "$COMMITS" >> $GITHUB_ENV
          echo "EOF" >> $GITHUB_ENV

      - name: Create Release
        uses: softprops/action-gh-release@v1
        with:
          tag_name: ${{ env.NEW_TAG }}
          name: Release ${{ env.NEW_TAG }}
          body: ${{ env.RELEASE_NOTES }}
          draft: false  # Set to true if you want to review before publishing
          prerelease: false  # Set to true for pre-releases
          # If you have build artifacts to include, uncomment and modify this:
          # files: |
          #   dist/*.zip
          #   dist/*.tar.gz
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Output Results
        run: |
          echo "::notice::🎉 Created release ${{ env.NEW_TAG }} from PR #${{ github.event.pull_request.number }}"