pipeline {
    agent any

    environment {
        APP_NAME    = 'no-whatever'
        DEPLOY_HOST = credentials('deploy-server-host') // 在 Jenkins 凭据中配置
        DEPLOY_USER = credentials('deploy-server-user')
    }

    triggers {
        gitlab(triggerOnPush: true, branchFilterType: 'All')
    }

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

        stage('Build Docker Image') {
            steps {
                script {
                    docker.build("${APP_NAME}:${BUILD_NUMBER}")
                    docker.build("${APP_NAME}:latest")
                }
            }
        }

        stage('Deploy') {
            steps {
                script {
                    // 方案 A: Jenkins 和部署机是同一台服务器
                    sh """
                        docker stop ${APP_NAME} || true
                        docker rm ${APP_NAME} || true
                        docker run -d \
                            --name ${APP_NAME} \
                            -p 3000:3000 \
                            -v ${APP_NAME}-data:/app/data \
                            --restart unless-stopped \
                            ${APP_NAME}:latest
                    """

                    // 方案 B: 部署到远程服务器 (取消注释并注释掉方案 A)
                    // sh """
                    //     docker save ${APP_NAME}:latest | \
                    //         ssh ${DEPLOY_USER}@${DEPLOY_HOST} 'docker load'
                    //     ssh ${DEPLOY_USER}@${DEPLOY_HOST} << 'EOF'
                    //         docker stop ${APP_NAME} || true
                    //         docker rm ${APP_NAME} || true
                    //         docker run -d \
                    //             --name ${APP_NAME} \
                    //             -p 3000:3000 \
                    //             -v ${APP_NAME}-data:/app/data \
                    //             --restart unless-stopped \
                    //             ${APP_NAME}:latest
                    //     EOF
                    // """
                }
            }
        }
    }

    post {
        success {
            echo "Deployed ${APP_NAME} build #${BUILD_NUMBER} successfully"
        }
        failure {
            echo "Build #${BUILD_NUMBER} failed"
        }
    }
}