pipeline {
    agent any

    parameters {
        gitParameter(
            branchFilter: 'origin/(.*)',
            defaultValue: 'zhangze-init',
            name: 'GIT_BRANCH',
            type: 'PT_BRANCH_TAG',
            selectedValue: 'DEFAULT',
            sortMode: 'NONE',
            description: '选择代码分支: ',
            quickFilterEnabled: true,
            tagFilter: '*',
            listSize: "5"
        )
    }

    environment {
        REMOTE_HOST = '43.130.56.138'
        REMOTE_PROJECT_PATH = '/data/webapps/lessie-email'
    }

    stages {

        stage('Checkout 代码') {
            steps {
                git branch: "${params.GIT_BRANCH}", credentialsId: 'fly_gitlab_auth', url: 'http://172.24.16.20/python/lessie-email.git'
            }
        }

        stage('同步文件') {
            steps {
                sh """
                    rsync -avz --exclude '.venv' --exclude '.git' ${WORKSPACE}/ ${REMOTE_HOST}:${REMOTE_PROJECT_PATH}/
                """
            }
        }

        stage('下线服务') {
             steps {
                sh """
                    ssh ${REMOTE_HOST} '
                        sh /data/sh/kill_lessie_emial.sh
                    '
                """
             }
        }

        stage('安装 & 启动服务') {
            steps {
                sh """
                    ssh ${REMOTE_HOST} '
                        cd ${REMOTE_PROJECT_PATH}
                        uv sync
                        source .venv/bin/activate
                        TIMESTAMP=\$(date +"%Y%m%d_%H%M%S")
                        LOGFILE="${REMOTE_PROJECT_PATH}/logs/lessie_email_\${TIMESTAMP}.log"
                        nohup env ENV=s4 uv run uvicorn app.main:app --host 0.0.0.0 --port 8031  > "\$LOGFILE" 2>&1 & 
                        ln -sf "\$LOGFILE" ${REMOTE_PROJECT_PATH}/logs/lessie_email_latest.log
                    '
                """
            }
        }

        stage('检查服务') {
            steps {
                script {
                    def checkResult = sh returnStatus: true, script: """
                        ssh ${REMOTE_HOST} '
                            set -e
                            LOG_LATEST="${REMOTE_PROJECT_PATH}/logs/lessie_email_latest.log"
                            
                            # 1. 检查端口是否监听（用 ss 原生过滤，精准可靠）
                            echo "【检查 1/3】检测端口 8031 是否监听..."
                            if ! ss -tnl \'sport = :8031\' >/dev/null 2>&1; then
                                echo "端口 8031 未监听！"
                                # 显示当前监听状态供排查
                                echo "当前监听情况："
                                ss -tnl | grep -E ":(8031|LISTEN)"
                                exit 1
                            fi
                            echo "端口 8031 正在监听"

                            # 2. 检查进程是否存在
                            echo "【检查 2/3】检测 uvicorn 进程是否存活..."
                            if ! pgrep -f "uvicorn.*app.main:app" >/dev/null; then
                                echo "未找到 uvicorn 进程！"
                                exit 1
                            fi
                            echo "uvicorn 进程存在"

                            # 3. 显示最新日志（最后 20 行）
                            echo "【检查 3/3】显示启动日志（最后 20 行）..."
                            echo "────────────────────────────"
                            if [ -f "\$LOG_LATEST" ]; then
                                tail -n 20 "\$LOG_LATEST"
                            else
                                echo "日志文件不存在：\$LOG_LATEST"
                                exit 1
                            fi
                            echo "────────────────────────────"
                            echo "服务启动成功！"
                        '
                    """
                    
                    if (checkResult != 0) {
                        error "服务启动检查失败！请查看上述日志排查问题。"
                    }
                }
            }
        }
    }

    post {
        success {
            echo '部署成功'
        }
        failure {
            echo '部署失败，请检查日志'
        }
    }
}