name: Backend CI

on:
  push:
    branches: [ main, develop ]
    paths:
      - 'backend/**'
      - '.github/workflows/backend.yml'
  pull_request:
    branches: [ main, develop ]
    paths:
      - 'backend/**'
      - '.github/workflows/backend.yml'

jobs:
  backend-test:
    runs-on: [docker]
    env:
      UNIQUE_DB: test_db_${{ github.run_id }}

    services:
      postgres:
        image: postgres:15-alpine
        env:
          POSTGRES_USER: test
          POSTGRES_PASSWORD: test
          POSTGRES_DB: test_db_${{ github.run_id }}_${{ github.run_attempt }}
        options: >-
          --health-cmd pg_isready
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5
        
    container:
      image: nikolaik/python-nodejs:python3.12-nodejs24-alpine
      options: --volume forgejo-pip-cache:/tmp/pip-cache

    steps:
    - uses: actions/checkout@v6
    
    - name: Set up Python
      run: |
        python --version

    - name: Install dependencies
      run: |
        cd backend
        python -m pip install --upgrade pip
        pip install --cache-dir /tmp/pip-cache -r requirements/dev.txt

    - name: Create Unique Test Database
      env:
        DATABASE_URL: postgresql://test:test@postgres:5432/postgres
      run: |
        # Install postgresql-client if not present in the alpine image to run psql
        # Or use python to create the db
        cd backend
        python -c "
        import os
        from sqlalchemy import create_engine, text
        db_url = os.environ['DATABASE_URL']
        engine = create_engine(db_url)
        new_db = os.environ['UNIQUE_DB']
        # Connect to default 'postgres' db to create the new one
        with engine.connect() as conn:
            conn.execute(text('COMMIT')) # Close any open transactions
            conn.execute(text(f'DROP DATABASE IF EXISTS {new_db}'))
            conn.execute(text(f'CREATE DATABASE {new_db}'))
        print(f'Created database: {new_db}')
        "

    - name: Debug cache
      run: |
        echo "Listing PIP cache files:"
        pip cache dir
        ls -la /tmp/pip-cache 2>/dev/null || echo "Cache dir empty or missing"

    - name: Lint with flake8
      run: |
        cd backend
        flake8 app tests --count --max-complexity=10 --max-line-length=127 --statistics --show-source
    
    - name: Run tests
      env:
        TEST_DATABASE_URL: postgresql://test:test@postgres:5432/${{ env.UNIQUE_DB }}
        DATABASE_URL: postgresql://test:test@postgres:5432/${{ env.UNIQUE_DB }}
        SECRET_KEY: test-secret-key
        JWT_SECRET_KEY: test-jwt-secret
        FLASK_ENV: test
      run: |
        cd backend
        pytest --cov=app --cov-report=xml --cov-report=term