create-release.yml

name: Create Release

on:
  push:
    branches: [main]

jobs:
  create_release:
    if: startsWith(github.event.head_commit.message, 'new version')

    runs-on: ubuntu-latest

    permissions:
      contents: write

    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Extract version from commit message
        run: |
          # Get the version from the commit message using a regex
          if [[ "${{ github.event.head_commit.message }}" =~ new\ version\ ([0-9]+\.[0-9]+\.[0-9]+) ]]; then
            echo "version=${BASH_REMATCH[1]}" >> $GITHUB_ENV
          else
            echo "Commit message does not match 'new version *.*.*' format."
            exit 1
          fi

      - name: Get previous tag
        run: |
          previous_tag=$(git describe --tags --abbrev=0 HEAD^)
          echo "previous_tag=$previous_tag" >> $GITHUB_ENV

      - name: Generate release notes with commit messages
        run: |
          commits=$(git log "${{ env.previous_tag }}..HEAD" --oneline)
          echo "release_body<<EOF" >> $GITHUB_ENV
          echo "### Changelog from version ${{ env.previous_tag }} to ${{ env.version }}:" >> $GITHUB_ENV
          echo "$commits" >> $GITHUB_ENV
          echo "EOF" >> $GITHUB_ENV

      - name: Create GitHub release
        uses: actions/create-release@latest
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          tag_name: "${{ env.version }}"
          release_name: "${{ env.version }}"
          body: "${{ env.release_body }}"
          draft: false
          prerelease: false