# Reusable workflow
#
# The release name and version are read from pyproject.toml.
# No project-specific repository variables or additional secrets are required.

name: Release

on:
  workflow_dispatch:
  push:
    paths:
      - "pyproject.toml"

permissions:
  contents: write

concurrency:
  group: release-${{ github.ref }}
  cancel-in-progress: false

jobs:
  release:
    runs-on: ubuntu-latest
    if: github.ref_name == github.event.repository.default_branch

    steps:
      - name: Checkout repo
        uses: actions/checkout@v7
        with:
          fetch-depth: 0

      - name: Read project metadata
        id: metadata
        run: |
          python - <<'PY' >> "$GITHUB_OUTPUT"
          import re
          import tomllib

          with open("pyproject.toml", "rb") as handle:
              data = tomllib.load(handle)

          project = data.get("project", {})
          version = str(project.get("version", "")).strip()
          name = str(project.get("name", "")).strip()
          display_name = str(
              data.get("tool", {}).get("comfy", {}).get("DisplayName") or name
          ).strip()

          if not name:
              raise SystemExit("[project].name is missing in pyproject.toml")

          if not re.fullmatch(r"\d+\.\d+\.\d+(?:[-+][0-9A-Za-z.-]+)?", version):
              raise SystemExit(f"Invalid semantic version in pyproject.toml: {version}")

          print(f"project_name={name}")
          print(f"display_name={display_name}")
          print(f"version={version}")
          print(f"tag=v{version}")
          PY

      - name: Check if tag for this version already exists
        id: tag_check
        run: |
          TAG="${{ steps.metadata.outputs.tag }}"
          git fetch --force --tags

          if git rev-parse --verify --quiet "refs/tags/$TAG" >/dev/null; then
            echo "Tag $TAG already exists. Skipping release."
            echo "exists=true" >> $GITHUB_OUTPUT
          else
            echo "exists=false" >> $GITHUB_OUTPUT
          fi

      - name: Build release notes
        id: notes
        if: steps.tag_check.outputs.exists != 'true'
        run: |
          CURRENT_TAG="${{ steps.metadata.outputs.tag }}"
          PREVIOUS_TAG="$(git tag --list 'v[0-9]*' --sort=-v:refname | grep -vx "$CURRENT_TAG" | head -n 1 || true)"

          if [ -n "$PREVIOUS_TAG" ]; then
            RANGE="$PREVIOUS_TAG..HEAD"
            HEADER="Changes since $PREVIOUS_TAG"
          else
            RANGE="HEAD"
            HEADER="Initial release"
          fi

          {
            echo "body<<EOF"
            echo "## $HEADER"
            echo
            git log --pretty=format:"- %s (%h)" "$RANGE"
            echo
            echo "EOF"
          } >> "$GITHUB_OUTPUT"

      - name: Create GitHub Release
        if: steps.tag_check.outputs.exists != 'true'
        uses: softprops/action-gh-release@v3
        with:
          tag_name: ${{ steps.metadata.outputs.tag }}
          name: ${{ steps.metadata.outputs.display_name }} ${{ steps.metadata.outputs.tag }}
          body: ${{ steps.notes.outputs.body }}
          generate_release_notes: true