pipeline {
    agent any

    tools {
        maven 'mvn3.8.8'
        jdk 'jdk21'
    }

    parameters {
        choice(
            name: 'ENV',
            choices: ['sit'],
            description: '部署环境' 
        )
        gitParameter(
            branchFilter: 'origin/(.*)',
            defaultValue: 'code/1118_java_re',
            name: 'GIT_BRANCH',
            type: 'PT_BRANCH_TAG',
            selectedValue: 'DEFAULT',
            sortMode: 'NONE',
            description: '选择代码分支: ',
            quickFilterEnabled: true,
            tagFilter: '*',
            listSize: "1"
        )
        string(
            name: 'TARGET_JDK_HOME',
            defaultValue: '/data/jdk-21.0.7',
            description: '目标机器 JDK 路径'
        )
        string(
            name: 'TARGET_HOST',
            defaultValue: '192.168.70.18',
            description: '目标服务器地址'
        )
        string(
            name: 'DEPLOY_DIR',
            defaultValue: '/data/webapps/flymoon_admin',
            description: '部署目录'
        )
    }

    environment {
        APP_NAME = 'flymoon-admin'
        GIT_REPO = 'http://172.24.16.20/root/fly_moon_admin.git'
        GIT_CREDS = 'fly_gitlab_auth'
        BUILD_DIR = "${WORKSPACE}"
    }

    stages {
        stage('01-代码检出') {
            steps {
                script {
                    echo "=========================================="
                    echo "Git 仓库: ${env.GIT_REPO}"
                    echo "分支: ${params.GIT_BRANCH}"
                    echo "=========================================="

                    git branch: "${params.GIT_BRANCH}",
                        credentialsId: "${env.GIT_CREDS}",
                        url: "${env.GIT_REPO}"
                }
            }
        }

        stage('02-Maven 构建') {
            steps {
                echo "=========================================="
                echo "执行 Maven 打包..."
                echo "构建目录: ${env.BUILD_DIR}"
                echo "=========================================="

                sh """
                    cd ${env.BUILD_DIR}/bin/
                    sh package.sh
                """
            }
        }

        stage('03-上传构建产物') {
            steps {
                echo "=========================================="
                echo "上传到: ${params.TARGET_HOST}:${params.DEPLOY_DIR}"
                echo "=========================================="

                sh """
                    scp ${env.BUILD_DIR}/target/${env.APP_NAME}.jar \
                        ${params.TARGET_HOST}:${params.DEPLOY_DIR}/${env.APP_NAME}-new.jar

                    scp ${env.BUILD_DIR}/bin/start.sh \
                        ${params.TARGET_HOST}:${params.DEPLOY_DIR}/

                    scp ${env.BUILD_DIR}/bin/stop.sh \
                        ${params.TARGET_HOST}:${params.DEPLOY_DIR}/
                """
            }
        }

        stage('04-备份与替换') {
            steps {
                echo "=========================================="
                echo "备份旧版本并替换 JAR 包..."
                echo "=========================================="

                sh """
                    ssh ${params.TARGET_HOST} '
                        cd ${params.DEPLOY_DIR} &&

                        if [ -f ${env.APP_NAME}.jar ]; then
                            echo "[INFO] 备份: ${env.APP_NAME}.jar -> ${env.APP_NAME}-backup.jar"
                            cp ${env.APP_NAME}.jar ${env.APP_NAME}-backup.jar
                        fi &&

                        echo "[INFO] 替换: ${env.APP_NAME}-new.jar -> ${env.APP_NAME}.jar"
                        mv ${env.APP_NAME}-new.jar ${env.APP_NAME}.jar &&

                        echo "[INFO] 设置脚本执行权限"
                        chmod +x start.sh stop.sh &&

                        echo "[SUCCESS] JAR 替换完成"
                    '
                """
            }
        }

        stage('05-停止旧服务') {
            steps {
                echo "=========================================="
                echo "停止旧版本服务..."
                echo "=========================================="

                sh """
                    ssh ${params.TARGET_HOST} '
                        cd ${params.DEPLOY_DIR} &&

                        if [ -f stop.sh ]; then
                            sh stop.sh || true
                            echo "[INFO] 等待服务完全停止..."
                            sleep 3
                        else
                            echo "[WARN] 未找到 stop.sh，跳过停止步骤"
                        fi
                    '
                """
            }
        }

        stage('06-启动新服务') {
            steps {
                echo "=========================================="
                echo "启动新版本服务..."
                echo "环境: ${params.ENV}"
                echo "JDK: ${params.TARGET_JDK_HOME}"
                echo "=========================================="

                sh """
                    ssh ${params.TARGET_HOST} '
                        cd ${params.DEPLOY_DIR} &&

                        echo "[INFO] 执行启动命令: sh start.sh ${params.ENV} ${params.TARGET_JDK_HOME}"
                        sh start.sh ${params.ENV} ${params.TARGET_JDK_HOME} &&

                        echo "[INFO] 等待启动完成..."
                        sleep 5 &&

                        if [ -f app.pid ]; then
                            PID=\$(cat app.pid)
                            if ps -p \$PID > /dev/null 2>&1; then
                                echo "[SUCCESS] 服务启动成功 (PID: \$PID)"
                            else
                                echo "[ERROR] 服务启动失败"
                                tail -50 /root/logs/${env.APP_NAME}/app.log
                                exit 1
                            fi
                        else
                            echo "[ERROR] PID 文件不存在"
                            exit 1
                        fi
                    '
                """
            }
        }

        stage('07-健康检查') {
            steps {
                echo "=========================================="
                echo "执行服务健康检查..."
                echo "=========================================="

                sh """
                    ssh ${params.TARGET_HOST} '
                        cd ${params.DEPLOY_DIR} &&

                        echo "[INFO] 等待服务完全启动..."
                        sleep 10 &&

                        if [ -f app.pid ]; then
                            PID=\$(cat app.pid)

                            if ps -p \$PID > /dev/null 2>&1; then
                                echo "[SUCCESS] 服务运行正常 (PID: \$PID)"
                                echo ""

                                # 显示进程信息
                                echo "==================== 进程信息 ===================="
                                ps -p \$PID -o pid,etime,cmd --no-headers
                                echo ""

                                # 显示日志位置
                                echo "==================== 日志位置 ===================="
                                echo "[INFO] 管道日志: /root/logs/${env.APP_NAME}/app.log"
                                echo "[INFO] 应用日志目录: ${params.DEPLOY_DIR}/logs"
                                echo "=================================================="
                            else
                                echo "[ERROR] 服务进程已退出"
                                echo "==================== 错误日志 ===================="
                                tail -100 /root/logs/${env.APP_NAME}/app.log
                                echo "=================================================="
                                exit 1
                            fi
                        else
                            echo "[ERROR] PID 文件不存在"
                            exit 1
                        fi
                    '
                """
            }
        }
    }

    post {
        success {
            echo ""
            echo "=================================================="
            echo "            部署成功                            "
            echo "=================================================="
            echo "环境:       ${params.ENV}"
            echo "服务器:     ${params.TARGET_HOST}"
            echo "部署路径:   ${params.DEPLOY_DIR}"
            echo "JDK 路径:   ${params.TARGET_JDK_HOME}"
            echo "Git 分支:   ${params.GIT_BRANCH}"
            echo "=================================================="
        }

        failure {
            echo ""
            echo "=================================================="
            echo "            部署失败                            "
            echo "=================================================="
            echo "请检查上述日志排查问题"
            echo "常见问题："
            echo "1. 检查目标服务器 JDK 路径是否正确"
            echo "2. 检查 SSH 连接是否正常"
            echo "3. 查看应用启动日志"
            echo "=================================================="
        }

        always {
            echo ""
            echo "流水线状态: ${currentBuild.currentResult}"
            echo "执行耗时: ${currentBuild.durationString}"
        }
    }
}