name: Test Python Package

on:
  push:
    branches:
      - main
  pull_request:

jobs:
  unit-tests:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version-file: .python-version

      - name: Install uv
        run: pip install uv

      - name: Install dependencies
        env:
          UV_LINK_MODE: copy
        run: uv sync --all-extras

      - name: Run unit tests
        run: |
          # --cov-fail-under=0: partial coverage only; floor is checked in coverage-report.
          uv run pytest tests/unit/ -m "not integration" \
            --cov=python_repositories \
            --cov-report= \
            --cov-fail-under=0

      - name: Upload unit coverage
        uses: https://github.com/christopherHX/gitea-upload-artifact@v4
        with:
          name: coverage-unit
          path: .coverage
          retention-days: 1
          compression-level: 0

  integration-tests:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version-file: .python-version

      - name: Install uv
        run: pip install uv

      - name: Install dependencies
        env:
          UV_LINK_MODE: copy
        run: uv sync --all-extras

      - name: Verify Docker
        run: docker info

      - name: Run integration tests
        run: |
          # --cov-fail-under=0: partial coverage only; floor is checked in coverage-report.
          uv run pytest -m integration \
            --cov=python_repositories \
            --cov-report= \
            --cov-fail-under=0

      - name: Upload integration coverage
        uses: https://github.com/christopherHX/gitea-upload-artifact@v4
        with:
          name: coverage-integration
          path: .coverage
          retention-days: 1
          compression-level: 0

  coverage-report:
    # Merges unit + integration coverage and enforces fail_under from pyproject.toml.
    needs: [unit-tests, integration-tests]
    runs-on: ubuntu-latest
    if: github.event_name == 'pull_request' || github.event_name == 'push'
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version-file: .python-version

      - name: Install uv
        run: pip install uv

      - name: Install dependencies
        env:
          UV_LINK_MODE: copy
        run: uv sync --all-extras

      - name: Download unit coverage
        uses: https://github.com/christopherHX/gitea-download-artifact@v4
        with:
          name: coverage-unit
          path: coverage-unit

      - name: Download integration coverage
        uses: https://github.com/christopherHX/gitea-download-artifact@v4
        with:
          name: coverage-integration
          path: coverage-integration

      - name: Combine coverage report
        run: |
          # --fail-under=0 so the full report is always written before the floor check.
          uv run coverage combine coverage-unit/.coverage coverage-integration/.coverage
          uv run coverage report -m --include='python_repositories/*' --fail-under=0 > coverage.txt

      - name: Show coverage report
        run: cat coverage.txt

      - name: Enforce coverage floor
        run: |
          # Reads fail_under from pyproject.toml; only combined coverage is evaluated here.
          FAIL_UNDER=$(python3 -c "import tomllib; print(tomllib.load(open('pyproject.toml', 'rb'))['tool']['coverage']['report']['fail_under'])")
          echo "Checking combined coverage against ${FAIL_UNDER}% floor..."
          if uv run coverage report --fail-under="$FAIL_UNDER" --include='python_repositories/*'; then
            echo "Coverage floor met."
          else
            echo "::error::Combined coverage is below the ${FAIL_UNDER}% floor"
            exit 1
          fi

      - name: Post coverage summary to PR
        if: github.event_name == 'pull_request'
        env:
          API_URL: ${{ vars.API_URL }}
          REPO_OWNER: ${{ github.repository_owner }}
          REPO_NAME: ${{ github.event.repository.name }}
          PR_NUMBER: ${{ github.event.pull_request.number }}
          CI_RUNNER_TOKEN: ${{ secrets.CI_RUNNER_TOKEN }}
        run: |
          PAYLOAD=$(python3 -c '
          import json
          import pathlib

          coverage = pathlib.Path("coverage.txt").read_text()
          print(
              json.dumps(
                  {
                      "body": f"**Test Coverage Report:**\n```\n{coverage}\n```",
                  }
              )
          )
          ')
          curl -sf -X POST "$API_URL/repos/$REPO_OWNER/$REPO_NAME/issues/$PR_NUMBER/comments" \
            -H "Authorization: token $CI_RUNNER_TOKEN" \
            -H "Content-Type: application/json" \
            -d "$PAYLOAD"