name: Release

on:
  push:
    branches: [main]
    paths:
      - "pyproject.toml"

permissions:
  contents: write

jobs:
  check-version:
    runs-on: ubuntu-latest
    outputs:
      should_release: ${{ steps.version_check.outputs.should_release }}
      new_version: ${{ steps.version_check.outputs.new_version }}
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Check for major/minor version bump
        id: version_check
        run: |
          NEW_VERSION=$(grep -m1 '^version' pyproject.toml | sed 's/version = "\(.*\)"/\1/')
          echo "Detected version in pyproject.toml: $NEW_VERSION"

          LATEST_TAG=$(git tag --list | grep -E '^[0-9]+\.[0-9]+\.[0-9]+$' | sort -V | tail -1)
          echo "Latest git tag: $LATEST_TAG"

          if [ -z "$LATEST_TAG" ]; then
            echo "No previous tag found, treating as new release"
            echo "should_release=true" >> "$GITHUB_OUTPUT"
            echo "new_version=$NEW_VERSION" >> "$GITHUB_OUTPUT"
            exit 0
          fi

          OLD_MAJOR=$(echo "$LATEST_TAG" | cut -d. -f1)
          OLD_MINOR=$(echo "$LATEST_TAG" | cut -d. -f2)
          NEW_MAJOR=$(echo "$NEW_VERSION" | cut -d. -f1)
          NEW_MINOR=$(echo "$NEW_VERSION" | cut -d. -f2)

          if [ "$NEW_MAJOR" -gt "$OLD_MAJOR" ] || [ "$NEW_MINOR" -gt "$OLD_MINOR" ]; then
            echo "Major or minor version bump detected: $LATEST_TAG -> $NEW_VERSION"
            echo "should_release=true" >> "$GITHUB_OUTPUT"
          else
            echo "Patch-only change ($LATEST_TAG -> $NEW_VERSION), skipping release"
            echo "should_release=false" >> "$GITHUB_OUTPUT"
          fi

          echo "new_version=$NEW_VERSION" >> "$GITHUB_OUTPUT"

  release:
    needs: check-version
    if: needs.check-version.outputs.should_release == 'true'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Install uv
        uses: astral-sh/setup-uv@v4

      - name: Set up Python
        run: uv python install 3.12

      - name: Install dependencies and build
        run: |
          uv sync
          uv build

      - name: Extract changelog for release
        id: changelog
        run: |
          VERSION=${{ needs.check-version.outputs.new_version }}
          # Extract the section for this version from CHANGELOG.md
          awk "/^## \[$VERSION\]/{found=1; next} /^## \[/{if(found) exit} found{print}" CHANGELOG.md > release_notes.md
          echo "Extracted release notes:"
          cat release_notes.md

      - name: Create GitHub Release
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          VERSION=${{ needs.check-version.outputs.new_version }}
          gh release create "$VERSION" \
            --title "$VERSION" \
            --notes-file release_notes.md \
            dist/unshackle-${VERSION}-py3-none-any.whl \
            dist/unshackle-${VERSION}.tar.gz