name: CI/CD Pipeline

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

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

jobs:
  test:
    runs-on: ubuntu-latest
    
    services:
      postgres:
        image: postgres:15
        env:
          POSTGRES_USER: postgres
          POSTGRES_PASSWORD: postgres
          POSTGRES_DB: test_stiftung
        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
      uses: actions/setup-python@v5
      with:
        python-version: '3.10'
    
    - name: Cache pip dependencies
      uses: actions/cache@v4
      with:
        path: ~/.cache/pip
        key: ${{ runner.os }}-pip-${{ hashFiles('app/requirements.txt') }}
        restore-keys: |
          ${{ runner.os }}-pip-
    
    - name: Install dependencies
      run: |
        sudo apt-get update
        sudo apt-get install -y postgresql-client
        python -m pip install --upgrade pip
        pip install -r app/requirements.txt
    
    - name: Set up environment
      run: |
        cp env-template.txt app/.env
        cd app
        echo "DJANGO_DEBUG=1" >> .env
        echo "DJANGO_SECRET_KEY=test-secret-key-for-ci" >> .env
        echo "POSTGRES_DB=test_stiftung" >> .env
        echo "POSTGRES_USER=postgres" >> .env
        echo "POSTGRES_PASSWORD=postgres" >> .env
        echo "DB_HOST=localhost" >> .env
        echo "DB_PORT=5432" >> .env
        echo "REDIS_URL=redis://localhost:6379/0" >> .env
    
    - name: Wait for PostgreSQL
      run: |
        while ! pg_isready -h localhost -p 5432 -U postgres; do
          echo "Waiting for PostgreSQL..."
          sleep 2
        done
        echo "PostgreSQL is ready!"
    
    - name: Run migrations
      working-directory: ./app
      env:
        DJANGO_DEBUG: "1"
        DJANGO_SECRET_KEY: "test-secret-key-for-ci"
        POSTGRES_DB: "test_stiftung"
        POSTGRES_USER: "postgres"
        POSTGRES_PASSWORD: "postgres"
        DB_HOST: "localhost"
        DB_PORT: "5432"
      run: |
        python manage.py migrate
    
    - name: Run tests
      working-directory: ./app
      env:
        DJANGO_DEBUG: "1"
        DJANGO_SECRET_KEY: "test-secret-key-for-ci"
        POSTGRES_DB: "test_stiftung"
        POSTGRES_USER: "postgres"
        POSTGRES_PASSWORD: "postgres"
        DB_HOST: "localhost"
        DB_PORT: "5432"
      run: |
        python manage.py test
    
    - name: Check Django configuration
      working-directory: ./app
      env:
        DJANGO_DEBUG: "1"
        DJANGO_SECRET_KEY: "test-secret-key-for-ci"
        POSTGRES_DB: "test_stiftung"
        POSTGRES_USER: "postgres"
        POSTGRES_PASSWORD: "postgres"
        DB_HOST: "localhost"
        DB_PORT: "5432"
      run: |
        python manage.py check --deploy
    
    - name: Collect static files
      working-directory: ./app
      env:
        DJANGO_DEBUG: "1"
        DJANGO_SECRET_KEY: "test-secret-key-for-ci"
        POSTGRES_DB: "test_stiftung"
        POSTGRES_USER: "postgres"
        POSTGRES_PASSWORD: "postgres"
        DB_HOST: "localhost"
        DB_PORT: "5432"
      run: |
        python manage.py collectstatic --noinput

  build:
    needs: test
    runs-on: ubuntu-latest
    if: github.event_name == 'push'
    
    permissions:
      contents: read
      packages: write

    steps:
    - name: Checkout repository
      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: Extract metadata
      id: meta
      uses: docker/metadata-action@v5
      with:
        images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
        tags: |
          type=ref,event=branch
          type=ref,event=pr
          type=sha,prefix={{branch}}-

    - name: Build and push Docker images
      uses: docker/build-push-action@v5
      with:
        context: ./app
        push: true
        tags: ${{ steps.meta.outputs.tags }}
        labels: ${{ steps.meta.outputs.labels }}

    - name: Build and push Paperless image
      uses: docker/build-push-action@v5
      with:
        context: ./paperless
        push: true
        tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}-paperless:latest
        labels: ${{ steps.meta.outputs.labels }}

  deploy:
    needs: build
    runs-on: ubuntu-latest
    if: github.ref == 'refs/heads/main'  # Auto-deploy when pushing to main branch
    
    environment: production
    
    steps:
    - name: Deploy to production
      uses: appleboy/ssh-action@v1.0.3
      env:
        DEPLOY_TOKEN: ${{ secrets.DEPLOY_TOKEN }}
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        GITHUB_ACTOR: ${{ github.actor }}
      with:
        host: ${{ secrets.PROD_HOST }}
        username: ${{ secrets.PROD_USERNAME }}
        key: ${{ secrets.PROD_SSH_KEY }}
        envs: DEPLOY_TOKEN,GITHUB_TOKEN,GITHUB_ACTOR
        script: |
          cd /opt/stiftung
          
          # Check if production .env exists in root directory
          if [ ! -f .env ]; then
            echo "ERROR: No production .env file found at /opt/stiftung/.env"
            echo "Please create it manually using the env-production.template as reference"
            echo "Steps:"
            echo "1. cp env-production.template .env"
            echo "2. nano .env  # Edit with real production values"
            echo "3. chmod 600 .env  # Secure permissions"
            exit 1
          fi
          
          echo "Production .env file found - proceeding with deployment"
          
          # Configure git pull strategy and force pull latest code changes
          git config pull.rebase false
          git fetch https://$DEPLOY_TOKEN@github.com/remmerinio/stiftung-management-system.git main
          git reset --hard FETCH_HEAD
          
          # The main compose.yml is already the correct production configuration
          # No need to copy from deploy-production since we use compose.yml directly
          echo "Using main compose.yml for production deployment"
          
          # Try to login to GitHub Container Registry and pull images
          echo "Attempting to pull images from GitHub Container Registry..."
          if echo $DEPLOY_TOKEN | docker login ghcr.io -u remmerinio --password-stdin; then
            echo "✅ Successfully logged into GHCR"
            if docker-compose -f compose.yml pull web worker beat paperless; then
              echo "✅ Successfully pulled web and paperless images from GHCR"
              USE_REMOTE_IMAGES=true
            else
              echo "⚠️ Failed to pull images from GHCR, will build locally"
              USE_REMOTE_IMAGES=false
            fi
          else
            echo "⚠️ Failed to login to GHCR, will build locally"
            USE_REMOTE_IMAGES=false
          fi
          
          # Pull other standard images (redis, postgres, grampsweb)
          echo "Pulling standard Docker images..."
          docker-compose -f compose.yml pull db redis grampsweb || echo "Some standard images failed to pull, will use cached versions"
          
          # If we couldn't pull from GHCR, build locally
          if [ "$USE_REMOTE_IMAGES" = "false" ]; then
            echo "🔨 Building images locally from source code..."
            docker build -t ghcr.io/remmerinio/stiftung-management-system:latest ./app
            docker build -t ghcr.io/remmerinio/stiftung-management-system-paperless:latest ./paperless
          fi
          
          # Stop containers and clean up
          docker-compose -f compose.yml down
          docker system prune -f
          
          # Start containers with latest images
          docker-compose -f compose.yml up -d --no-build
          
          # Wait for containers to be ready
          echo "Waiting for containers to start..."
          sleep 30
          
          # Run migrations
          docker-compose -f compose.yml exec -T web python manage.py migrate
          
          # Collect static files
          docker-compose -f compose.yml exec -T web python manage.py collectstatic --noinput
          
          # Show container status
          docker-compose -f compose.yml ps