name: Build and Deploy

on:
  push:
    branches: [master, production-deployment]
  pull_request:
    branches: [master]

env:
  REGISTRY: ghcr.io
  IMAGE_PREFIX: ${{ github.repository }}

jobs:
  # ---- Backend Tests ----
  test-backend:
    name: Backend Tests
    runs-on: ubuntu-latest
    services:
      postgres:
        image: postgres:16-alpine
        env:
          POSTGRES_USER: translate
          POSTGRES_PASSWORD: test_password
          POSTGRES_DB: translate_test
        ports:
          - 5432:5432
        options: >-
          --health-cmd pg_isready
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5
      redis:
        image: redis:7-alpine
        ports:
          - 6379:6379
        options: >-
          --health-cmd "redis-cli ping"
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5

    steps:
      - uses: actions/checkout@v4

      - name: Set up Python 3.12
        uses: actions/setup-python@v5
        with:
          python-version: "3.12"
          cache: pip

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

      - name: Run tests
        env:
          ENV: test
          DATABASE_URL: postgresql+asyncpg://translate:test_password@localhost:5432/translate_test
          REDIS_URL: redis://localhost:6379/0
          JWT_SECRET_KEY: test_jwt_secret_key_for_ci
          ADMIN_USERNAME: admin
          ADMIN_PASSWORD: test_admin_password
          ADMIN_TOKEN_SECRET: test_admin_token_secret_ci
          CORS_ORIGINS: http://localhost:3000
        run: |
          pytest tests/ -v --tb=short -x

  # ---- Frontend Build Check ----
  test-frontend:
    name: Frontend Build Check
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: frontend

    steps:
      - uses: actions/checkout@v4

      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: "20"
          cache: npm
          cache-dependency-path: frontend/package-lock.json

      - name: Install dependencies
        run: npm ci

      - name: Lint
        run: npm run lint --if-present

      - name: Build
        run: npm run build
        env:
          NEXT_PUBLIC_API_URL: http://localhost:8000

  # ---- Build and Push Docker Images ----
  build:
    name: Build Docker Images
    runs-on: ubuntu-latest
    needs: [test-backend, test-frontend]
    if: github.event_name == 'push' && github.ref == 'refs/heads/production-deployment'
    permissions:
      contents: read
      packages: write

    steps:
      - uses: actions/checkout@v4

      - name: Log in to Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Extract metadata for backend
        id: meta-backend
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_PREFIX }}/backend
          tags: |
            type=sha,prefix=
            type=raw,value=latest,enable={{is_default_branch}}

      - name: Build and push backend
        uses: docker/build-push-action@v5
        with:
          context: .
          file: docker/backend/Dockerfile
          target: production
          push: true
          tags: ${{ steps.meta-backend.outputs.tags }}
          labels: ${{ steps.meta-backend.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

      - name: Extract metadata for frontend
        id: meta-frontend
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_PREFIX }}/frontend
          tags: |
            type=sha,prefix=
            type=raw,value=latest,enable={{is_default_branch}}

      - name: Build and push frontend
        uses: docker/build-push-action@v5
        with:
          context: .
          file: docker/frontend/Dockerfile
          target: production
          build-args: NEXT_PUBLIC_API_URL=
          push: true
          tags: ${{ steps.meta-frontend.outputs.tags }}
          labels: ${{ steps.meta-frontend.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

  # ---- Deploy to Server ----
  deploy:
    name: Deploy to Server
    runs-on: ubuntu-latest
    needs: [build]
    if: github.ref == 'refs/heads/production-deployment'
    environment: production

    steps:
      - name: Deploy via SSH
        uses: appleboy/ssh-action@v1
        with:
          host: ${{ secrets.SERVER_HOST }}
          username: ${{ secrets.SERVER_USER }}
          key: ${{ secrets.SERVER_SSH_KEY }}
          script: |
            cd ${{ secrets.DEPLOY_PATH }}
            docker compose pull
            docker compose up -d --remove-orphans
            docker compose ps