Build Pipeline

# .github/workflows/ci.yml
name: CI Pipeline

on:
  push:
    branches: [main, develop]
  pull_request:
    branches: [main]

concurrency:
  group: ci-{{ github.ref }}
  cancel-in-progress: true

env:
  PYTHON_VERSION: "3.12"
  NODE_VERSION: "20"
  REGISTRY: ghcr.io
  IMAGE_NAME: {{ github.repository }}

jobs:
  # Lint and type check first (fast fail)
  lint:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      
      - name: Setup Python
        uses: actions/setup-python@v5
        with:
          python-version: {{ env.PYTHON_VERSION }}
          cache: 'pip'
      
      - name: Install dependencies
        run: |
          pip install ruff mypy
          pip install -r requirements.txt
      
      - name: Run Ruff linter
        run: ruff check .
      
      - name: Run type checking
        run: mypy src/ --ignore-missing-imports
      
      - name: Frontend lint
        working-directory: frontend/console
        run: |
          npm ci --prefer-offline
          npm run lint
          npm run type-check

  # Unit tests in parallel
  test-backend:
    needs: lint
    runs-on: ubuntu-latest
    services:
      postgres:
        image: postgres:16
        env:
          POSTGRES_PASSWORD: postgres
        options: >-
          --health-cmd pg_isready
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5
        ports:
          - 5432:5432
      redis:
        image: redis:7
        ports:
          - 6379:6379
    
    steps:
      - uses: actions/checkout@v4
      
      - name: Setup Python
        uses: actions/setup-python@v5
        with:
          python-version: {{ env.PYTHON_VERSION }}
          cache: 'pip'
      
      - name: Install dependencies
        run: pip install -r requirements.txt -r requirements-dev.txt
      
      - name: Run tests with coverage
        env:
          DATABASE_URL: postgresql://postgres:postgres@localhost:5432/test
          REDIS_URL: redis://localhost:6379
        run: |
          pytest tests/ \
            --cov=src \
            --cov-report=xml \
            --cov-report=html \
            -n auto \
            --dist loadgroup
      
      - name: Upload coverage
        uses: codecov/codecov-action@v4
        with:
          token: {{ secrets.CODECOV_TOKEN }}
          files: coverage.xml
          fail_ci_if_error: true

  test-frontend:
    needs: lint
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      
      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: {{ env.NODE_VERSION }}
          cache: 'npm'
          cache-dependency-path: frontend/console/package-lock.json
      
      - name: Install dependencies
        working-directory: frontend/console
        run: npm ci --prefer-offline
      
      - name: Run tests
        working-directory: frontend/console
        run: npm run test -- --coverage
      
      - name: Build application
        working-directory: frontend/console
        run: npm run build
      
      - name: Upload build artifact
        uses: actions/upload-artifact@v4
        with:
          name: frontend-build
          path: frontend/console/.next
          retention-days: 1

  # Docker build with layer caching
  build-image:
    needs: [test-backend, test-frontend]
    runs-on: ubuntu-latest
    outputs:
      image-tag: {{ steps.meta.outputs.tags }}
    
    steps:
      - uses: actions/checkout@v4
      
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      
      - name: Login to Container Registry
        uses: docker/login-action@v3
        with:
          registry: {{ env.REGISTRY }}
          username: {{ github.actor }}
          password: {{ secrets.GITHUB_TOKEN }}
      
      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: {{ env.REGISTRY }}/{{ env.IMAGE_NAME }}
          tags: |
            type=sha,prefix=
            type=ref,event=branch
            type=semver,pattern={{version}}
      
      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          context: .
          push: true
          tags: {{ steps.meta.outputs.tags }}
          labels: {{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max
          build-args: |
            VERSION={{ github.sha }}
            BUILD_TIME={{ github.event.head_commit.timestamp }}