# =============================================================================
# Python CI Pipeline
# Runs: lint (ruff), type check (mypy), test (pytest), coverage upload
# =============================================================================

name: Python CI

on:
  push:
    branches: [main]
    paths:
      - "**.py"
      - "requirements*.txt"
      - "pyproject.toml"
      - ".github/workflows/ci-python.yaml"
  pull_request:
    branches: [main]
    paths:
      - "**.py"
      - "requirements*.txt"
      - "pyproject.toml"
      - ".github/workflows/ci-python.yaml"

permissions:
  contents: read

env:
  PYTHON_VERSION: "3.12"

jobs:
  # ---------------------------------------------------------------------------
  # Lint with Ruff
  # ---------------------------------------------------------------------------
  lint:
    name: Lint
    runs-on: ubuntu-latest
    timeout-minutes: 5
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-python@v5
        with:
          python-version: ${{ env.PYTHON_VERSION }}

      - name: Install ruff
        run: pip install ruff

      - name: Ruff check (lint)
        run: ruff check .

      - name: Ruff format (formatting)
        run: ruff format --check .

  # ---------------------------------------------------------------------------
  # Type check with mypy
  # ---------------------------------------------------------------------------
  type-check:
    name: Type Check
    runs-on: ubuntu-latest
    timeout-minutes: 10
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-python@v5
        with:
          python-version: ${{ env.PYTHON_VERSION }}

      - name: Cache pip dependencies
        uses: actions/cache@v4
        with:
          path: ~/.cache/pip
          key: ${{ runner.os }}-pip-${{ hashFiles('requirements*.txt') }}
          restore-keys: |
            ${{ runner.os }}-pip-

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

      - name: Run mypy
        run: mypy src/ --ignore-missing-imports

  # ---------------------------------------------------------------------------
  # Test with pytest
  # ---------------------------------------------------------------------------
  test:
    name: Test
    runs-on: ubuntu-latest
    timeout-minutes: 15

    # Uncomment to add a PostgreSQL service for integration tests.
    # services:
    #   postgres:
    #     image: postgres:17-alpine
    #     env:
    #       POSTGRES_USER: test
    #       POSTGRES_PASSWORD: test
    #       POSTGRES_DB: test_db
    #     ports:
    #       - 5432:5432
    #     options: >-
    #       --health-cmd pg_isready
    #       --health-interval 10s
    #       --health-timeout 5s
    #       --health-retries 5

    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-python@v5
        with:
          python-version: ${{ env.PYTHON_VERSION }}

      - name: Cache pip dependencies
        uses: actions/cache@v4
        with:
          path: ~/.cache/pip
          key: ${{ runner.os }}-pip-${{ hashFiles('requirements*.txt') }}
          restore-keys: |
            ${{ runner.os }}-pip-

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

      - name: Run tests with coverage
        run: |
          pytest \
            --cov=src \
            --cov-report=xml:coverage.xml \
            --cov-report=term-missing \
            --junitxml=junit.xml \
            -v
        env:
          PYTHONPATH: ${{ github.workspace }}
          # DATABASE_URL: postgresql://test:test@localhost:5432/test_db

      - name: Upload coverage report
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: coverage-report
          path: coverage.xml
          retention-days: 7

      - name: Upload test results
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: test-results
          path: junit.xml
          retention-days: 7

      # Uncomment to upload coverage to Codecov.
      # - name: Upload to Codecov
      #   if: github.event_name == 'push' && github.ref == 'refs/heads/main'
      #   uses: codecov/codecov-action@v4
      #   with:
      #     files: coverage.xml
      #     token: ${{ secrets.CODECOV_TOKEN }}