auto-release.yml

name: Create Release

on:
  push:
    branches: [master]

permissions:
  contents: write

jobs:
  create_release:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Get version from build.gradle
        id: version
        run: |
          VERSION=$(grep "^version = " build.gradle | sed "s/version = '\(.*\)'/\1/")
          echo "version=$VERSION" >> $GITHUB_OUTPUT

      - name: Check if tag exists
        id: check
        run: |
          VERSION="${{ steps.version.outputs.version }}"
          if git rev-parse "v${VERSION}" >/dev/null 2>&1; then
            echo "Tag v${VERSION} already exists, skipping release"
            echo "should_release=false" >> $GITHUB_OUTPUT
          else
            echo "Tag v${VERSION} does not exist, will create release"
            echo "should_release=true" >> $GITHUB_OUTPUT
          fi

      - name: Extract changelog notes for this version
        id: notes
        if: steps.check.outputs.should_release == 'true'
        run: |
          VERSION="${{ steps.version.outputs.version }}"
          NOTES=""
          if [ -f CHANGELOG.md ]; then
            NOTES=$(awk -v ver="$VERSION" '
              $0 ~ "^## " ver {p=1; next}
              p && /^## / {exit}
              p {print}
            ' CHANGELOG.md)
          fi
          {
            echo "notes<<EOF"
            echo "$NOTES"
            echo "EOF"
          } >> "$GITHUB_OUTPUT"

      - name: Create tag and release
        if: steps.check.outputs.should_release == 'true'
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          TAG="v${{ steps.version.outputs.version }}"
          git tag "$TAG"
          git push origin "$TAG"
          if [ -n "$(echo "$NOTES" | tr -d '[:space:]')" ]; then
            gh release create "$TAG" --title "$TAG" --notes "$NOTES"
          else
            gh release create "$TAG" --title "$TAG" --generate-notes
          fi
        env:
          GITHUB_TOKEN: ${{ secrets.GOCARDLESS_CI_ROBOT_TOKEN }}
          NOTES: ${{ steps.notes.outputs.notes }}