name: Release

on:
  push:
    branches: [main]

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5

      - name: Set up Python
        uses: actions/setup-python@v6
        with:
          python-version: "3.12"

      - name: Install dependencies
        run: |
          pip install --upgrade pip
          pip install -r requirements.txt
          pip install pytest

      - name: Run tests
        run: cd tests && python -m pytest -v

  release:
    needs: test
    runs-on: ubuntu-latest
    permissions:
      contents: write

    steps:
      - uses: actions/checkout@v5
        with:
          fetch-depth: 0

      - name: Calculate next version
        id: version
        run: |
          # Get latest tag, default to v0.0.0 if none
          LATEST_TAG=$(git tag --sort=-v:refname | grep -E '^v[0-9]+\.[0-9]+\.[0-9]+$' | head -n1)
          if [ -z "$LATEST_TAG" ]; then
            NEXT="v0.1.0"
          else
            # Bump patch version
            MAJOR=$(echo $LATEST_TAG | cut -d. -f1 | tr -d 'v')
            MINOR=$(echo $LATEST_TAG | cut -d. -f2)
            PATCH=$(echo $LATEST_TAG | cut -d. -f3)
            PATCH=$((PATCH + 1))
            NEXT="v${MAJOR}.${MINOR}.${PATCH}"
          fi
          echo "TAG=$NEXT" >> $GITHUB_OUTPUT
          echo "Next version: $NEXT"

      - name: Generate changelog
        id: changelog
        run: |
          PREV_TAG=$(git tag --sort=-v:refname | grep -E '^v[0-9]+\.[0-9]+\.[0-9]+$' | head -n1)
          if [ -z "$PREV_TAG" ]; then
            git log --pretty=format:"- %s (%h)" > CHANGELOG.md
          else
            git log --pretty=format:"- %s (%h)" ${PREV_TAG}..HEAD > CHANGELOG.md
          fi
          echo "--- Changelog ---"
          cat CHANGELOG.md

      - name: Create tag
        run: |
          git config user.name "github-actions"
          git config user.email "github-actions@github.com"
          git tag ${{ steps.version.outputs.TAG }}
          git push origin ${{ steps.version.outputs.TAG }}

      - name: Create GitHub Release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ steps.version.outputs.TAG }}
          name: "Release ${{ steps.version.outputs.TAG }}"
          body_path: CHANGELOG.md
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}