pipeline {
    agent any

    parameters {
        choice(name: 'env', choices: ['dev', 'test', 'prod'], description: '部署环境（dev/test/prod）')
        string(name: 'NAMESPACE', defaultValue: 'hfln-dev', description: 'Kubernetes 命名空间')
    }

    environment {
        PROJECT_NAME    = 'portal-service'
        MODULE_NAME     = 'portal-service-server'
        MAVEN_HOME      = '/usr/local/apache-maven-3.9.9/bin'
        HARBOR_HOST     = '8.130.28.21:81'
        KUBECONFIG_PATH = '/root/.kube/config'
    }

    stages {
        stage('🧬 设置环境变量') {
            steps {
                script {
                    if (params.env == 'prod') {
                        env.HARBOR_PROJECT = 'prod'
                    } else if (params.env == 'test') {
                        env.HARBOR_PROJECT = 'test'
                    } else {
                        env.HARBOR_PROJECT = 'dev'
                    }

                    echo ">>> 使用环境：${params.env}，HARBOR 项目：${env.HARBOR_PROJECT}，K8S 命名空间：${params.NAMESPACE}"
                }
            }
        }

        stage('🧬 拉取 Git 代码') {
            steps {
                script {
                    echo ">>> 拉取代码中..."
                    checkout scm
                    echo ">>> 代码拉取完成 ✅"
                }
            }
        }

        stage('📦 Maven 构建项目') {
            steps {
                script {
                    echo ">>> 开始构建模块：${MODULE_NAME}"
                    sh "${MAVEN_HOME}/mvn clean package -DskipTests -pl ${MODULE_NAME} -am"
                    echo ">>> 构建完成 ✅"
                }
            }
        }

        stage('🐳 构建 & 推送 Docker 镜像') {
            steps {
                script {
                    def imageTag = "${HARBOR_HOST}/${env.HARBOR_PROJECT}/${PROJECT_NAME}:${BUILD_NUMBER}"
                    echo ">>> 构建 Docker 镜像: ${imageTag}"

                    sh """
                        docker login -u admin -p Hfln@1024 ${HARBOR_HOST}
                        docker build --build-arg spring_profiles_active=${params.env} -t ${imageTag} .
                        docker push ${imageTag}
                        docker rmi ${imageTag}
                    """
                    echo ">>> Docker 镜像构建并推送完成 ✅"
                }
            }
        }

        stage('🚀 部署到 Kubernetes') {
            steps {
                script {
                    def imageTag = "${HARBOR_HOST}/${env.HARBOR_PROJECT}/${PROJECT_NAME}:${BUILD_NUMBER}"

                    echo ">>> 正在部署：${PROJECT_NAME} 到命名空间：${params.NAMESPACE}"

                    sh """
                        export KUBECONFIG=${KUBECONFIG_PATH}
                        kubectl set image deployment/${PROJECT_NAME} ${PROJECT_NAME}=${imageTag} -n ${params.NAMESPACE}
                    """
                    echo ">>> 部署完成 ✅"
                }
            }
        }
    }

    post {
        success {
            echo "✅ 构建 & 部署成功 🎉"

            script {
                echo "🧹 开始清理旧镜像（只保留最新 3 个）"
                sh """
                    docker images --format "{{.Repository}}:{{.Tag}}" | \
                    grep "${HARBOR_HOST}/${env.HARBOR_PROJECT}/${PROJECT_NAME}:" | \
                    sed 's/.*://g' | sort -rn | tail -n +4 | while read oldTag; do
                        image="${HARBOR_HOST}/${env.HARBOR_PROJECT}/${PROJECT_NAME}:\${oldTag}"
                        echo ">>> 检查镜像是否正在使用：\$image"
                        CONTAINER=\$(docker ps -a --filter ancestor=\$image --format "{{.ID}}")
                        if [ -z "\$CONTAINER" ]; then
                            echo "✅ 删除镜像：\$image"
                            docker rmi \$image
                        else
                            echo "⚠️ 镜像 \$image 正在被容器使用，跳过删除。"
                        fi
                    done
                """
                echo "🧹 旧镜像清理完成 ✅"
            }
        }

        failure {
            echo "❌ 构建或部署失败，请检查日志！"
        }

        always {
            echo "🧼 清理工作区..."
            cleanWs()
        }
    }
}