name: Publish to PyPI

on:
  workflow_dispatch:
    inputs:
      tag:
        description: 'Release tag to publish (e.g., v0.10.1)'
        required: true
        type: string

permissions:
  contents: read

jobs:
  build:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      actions: write
    steps:
      - name: Verify tag format
        run: |
          TAG="${{ inputs.tag }}"
          if [[ ! "$TAG" =~ ^v[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
            echo "Error: '$TAG' is not a valid release tag (expected vX.Y.Z)"
            exit 1
          fi

      - name: Checkout release tag
        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          ref: refs/tags/${{ inputs.tag }}

      - name: Install uv
        uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0

      - name: Set up Python
        uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6
        with:
          python-version: "3.13"

      - name: Verify tag matches package version
        run: |
          TAG_VERSION="${{ inputs.tag }}"
          TAG_VERSION="${TAG_VERSION#v}"
          PROJECT_VERSION="$(python -c 'import tomllib; print(tomllib.load(open("pyproject.toml","rb"))["project"]["version"])')"
          if [[ "$TAG_VERSION" != "$PROJECT_VERSION" ]]; then
            echo "Error: Tag version ($TAG_VERSION) does not match pyproject.toml version ($PROJECT_VERSION)"
            exit 1
          fi

      - name: Build package
        run: uv build

      - name: Upload build artifacts
        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
        with:
          name: dist
          path: dist/
          if-no-files-found: error

  publish:
    needs: build
    runs-on: ubuntu-latest
    environment: pypi
    permissions:
      id-token: write
      actions: read
    steps:
      - name: Download build artifacts
        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
        with:
          name: dist
          path: dist/

      - name: Install uv
        uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0

      - name: Publish to PyPI
        run: uv publish