release.yml

name: Create Release

on:
  push:
    tags:
      - 'v*'

permissions:
  contents: write

jobs:
  release:
    name: Create GitHub Release
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0 # Fetch all history for all tags

      - name: Set current tag
        run: echo "CURRENT_TAG=${GITHUB_REF#refs/tags/}" >> $GITHUB_ENV

      - name: Get previous tag
        id: previoustag
        run: |
          # Get the latest tag that is not the current tag
          PREVIOUS_TAG=$(git describe --tags --abbrev=0 $(git rev-list --tags --skip=1 --max-count=1) 2>/dev/null)
          if [ $? -ne 0 ]; then
            echo "No previous tag found. Using first commit."
            # Use the hash of the very first commit if no previous tag is found
            PREVIOUS_TAG=$(git rev-list --max-parents=0 HEAD)
          fi
          echo "previous_tag=$PREVIOUS_TAG" >> $GITHUB_ENV
          echo "Previous tag: $PREVIOUS_TAG"

      - name: Generate Release Notes
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PREVIOUS_TAG: ${{ env.previous_tag }}
          GITHUB_REPOSITORY: ${{ github.repository }}
        run: |
          RELEASE_BODY="**Open Translation Engine (OTE) $CURRENT_TAG**

          A collaborative translation dictionary manager.

          https://github.com/$GITHUB_REPOSITORY"

          # Generate changelog
          CHANGELOG=$(git log --pretty=format:"* %s (%h)" $PREVIOUS_TAG..$CURRENT_TAG)

          if [ -n "$CHANGELOG" ]; then
            RELEASE_BODY="${RELEASE_BODY}

          **Changelog**:

          ${CHANGELOG}

          "
          fi

          # Add link to compare with previous version
          RELEASE_BODY="${RELEASE_BODY}

          See all commits since last release: https://github.com/$GITHUB_REPOSITORY/compare/${PREVIOUS_TAG}...${CURRENT_TAG}"

          echo "RELEASENOTES<<EOF" >> $GITHUB_ENV
          echo -e "$RELEASE_BODY" >> $GITHUB_ENV
          echo "EOF" >> $GITHUB_ENV

      - name: Create GitHub Release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ env.CURRENT_TAG }}
          name: "Open Translation Engine (OTE) ${{ env.CURRENT_TAG }}"
          body: ${{ env.RELEASENOTES }}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}