pipeline {
    agent any

    environment {
        DEPLOY_DIR = '/volume1/docker/autostock'
        ENV_FILE   = "${DEPLOY_DIR}/.env"
    }

    options {
        timeout(time: 30, unit: 'MINUTES')
        disableConcurrentBuilds()
    }

    stages {
        stage('Checkout') {
            steps {
                checkout scm
            }
        }

        stage('Validate') {
            steps {
                sh '''
                    echo "=== Syntax Check ==="
                    python3 -c "
import ast, pathlib
errors = []
for f in pathlib.Path('backend/app').rglob('*.py'):
    try:
        ast.parse(f.read_text())
    except SyntaxError as e:
        errors.append(f'{f}: {e}')
for f in pathlib.Path('mcp-server').glob('*.py'):
    try:
        ast.parse(f.read_text())
    except SyntaxError as e:
        errors.append(f'{f}: {e}')
if errors:
    print('\\n'.join(errors))
    exit(1)
print('All files OK')
"
                '''
            }
        }

        stage('Sync & Build') {
            steps {
                sh """
                    echo "=== Syncing source to deploy directory ==="
                    mkdir -p ${DEPLOY_DIR}

                    # .env 존재 확인
                    if [ ! -f "${ENV_FILE}" ]; then
                        echo "WARNING: ${ENV_FILE} not found. Creating template..."
                        cp deploy/setup-nas.sh ${DEPLOY_DIR}/ 2>/dev/null || true
                    fi

                    # 소스 동기화 (backend, mcp-server, frontend, docker-compose.yml, docker/)
                    cp docker-compose.yml ${DEPLOY_DIR}/
                    cp -r docker/ ${DEPLOY_DIR}/ 2>/dev/null || true
                    rsync -a --delete backend/ ${DEPLOY_DIR}/backend/ || cp -r backend/ ${DEPLOY_DIR}/backend/
                    rsync -a --delete mcp-server/ ${DEPLOY_DIR}/mcp-server/ || cp -r mcp-server/ ${DEPLOY_DIR}/mcp-server/
                    rsync -a --delete frontend/ ${DEPLOY_DIR}/frontend/ || cp -r frontend/ ${DEPLOY_DIR}/frontend/

                    echo "=== Building Docker Images ==="
                    cd ${DEPLOY_DIR}
                    docker-compose build backend mcp-server frontend
                """
            }
        }

        stage('Deploy') {
            steps {
                sh """
                    cd ${DEPLOY_DIR}

                    echo "=== Rolling Deploy (앱만 재시작, DB/Redis 유지) ==="
                    docker-compose stop backend mcp-server frontend 2>/dev/null || true
                    docker-compose up -d

                    echo "=== Waiting for health check ==="
                    sleep 15

                    for i in 1 2 3 4 5; do
                        if curl -sf http://localhost:8000/health > /dev/null 2>&1; then
                            echo "Backend is healthy!"
                            break
                        fi
                        echo "Waiting for backend... (\$i/5)"
                        sleep 5
                    done

                    docker-compose ps
                """
            }
        }

        stage('DB Migration') {
            steps {
                sh """
                    cd ${DEPLOY_DIR}
                    docker-compose exec -T backend alembic upgrade head || echo "WARNING: Migration failed!"
                """
            }
        }
    }

    post {
        success {
            echo 'Deployment successful!'
        }
        failure {
            echo 'Deployment failed!'
            sh """
                cd ${DEPLOY_DIR} 2>/dev/null && docker-compose logs --tail=30 backend mcp-server 2>/dev/null || true
            """
        }
        always {
            cleanWs()
        }
    }
}