// Jenkinsfile for Project A

pipeline {
    agent any

    parameters {
        // 项目特定的默认值
        string(name: 'GIT_REPO_URL', defaultValue: 'https://your-git-server.com/project-a.git', description: 'Git仓库URL')
        string(name: 'GIT_BRANCH', defaultValue: 'main', description: '要拉取的Git分支')
        credentials(name: 'GIT_CREDENTIALS_ID', defaultValue: 'your-git-credentials-id', description: 'Git凭证ID', required: false)

        string(name: 'BUILD_COMMAND', defaultValue: 'mvn clean package -DskipTests', description: '项目A打包命令') // project-a 的打包命令

        string(name: 'DOCKER_REGISTRY_URL', defaultValue: 'your-docker-registry.com', description: 'Docker镜像仓库URL')
        string(name: 'DOCKER_IMAGE_NAME', defaultValue: 'project-a-app', description: 'Docker镜像名称') // project-a 的镜像名
        string(name: 'IMAGE_BASE_TAG', defaultValue: '1.0', description: '基础镜像标签')
        credentials(name: 'DOCKER_CREDENTIALS_ID', defaultValue: 'your-docker-registry-credentials-id', description: 'Docker镜像仓库凭证ID', required: true)
        booleanParam(name: 'PUSH_LATEST_TAG', defaultValue: true, description: '是否同时推送 latest 标签?')
    }

    environment {
        FULL_IMAGE_NAME = "${params.DOCKER_REGISTRY_URL}/${params.DOCKER_IMAGE_NAME}"
        IMAGE_TAG = "" // 将在 Checkout 后动态设置
    }

    // tools { ... } // 如果需要

    stages {
        stage('1. Checkout Code') {
            steps {
                echo "拉取代码从 ${params.GIT_REPO_URL}, 分支: ${params.GIT_BRANCH}"
                cleanWs()
                checkout([
                    $class: 'GitSCM',
                    branches: [[name: params.GIT_BRANCH]],
                    userRemoteConfigs: [[
                        url: params.GIT_REPO_URL,
                        credentialsId: params.GIT_CREDENTIALS_ID
                    ]],
                    extensions: [
                        [$class: 'CloneOption', shallow: true, noTags: true, depth: 1, timeout: 20],
                        [$class: 'PruneStaleBranch']
                    ]
                ])
                script {
                    def shortCommit = sh(script: 'git rev-parse --short HEAD', returnStdout: true).trim()
                    env.IMAGE_TAG = "${params.IMAGE_BASE_TAG}-${BUILD_NUMBER}-${shortCommit}"
                    echo "生成的镜像TAG: ${env.IMAGE_TAG}"
                }
            }
        }

        stage('2. Build and Package Application') {
            steps {
                echo "开始打包应用: ${params.BUILD_COMMAND}"
                sh "${params.BUILD_COMMAND}"
                echo "应用打包完成."
            }
        }

        stage('3. Build Docker Image') {
            steps {
                echo "开始构建Docker镜像: ${env.FULL_IMAGE_NAME}:${env.IMAGE_TAG}"
                script {
                    docker.build("${env.FULL_IMAGE_NAME}:${env.IMAGE_TAG}", "-f Dockerfile .") // 假设 Dockerfile 在根目录
                }
                echo "Docker镜像构建完成: ${env.FULL_IMAGE_NAME}:${env.IMAGE_TAG}"
            }
        }

        stage('4. Push Docker Image') {
            steps {
                echo "开始推送Docker镜像到 ${params.DOCKER_REGISTRY_URL}"
                script {
                    docker.withRegistry(params.DOCKER_REGISTRY_URL, params.DOCKER_CREDENTIALS_ID) {
                        docker.image("${env.FULL_IMAGE_NAME}:${env.IMAGE_TAG}").push()
                        echo "镜像 ${env.FULL_IMAGE_NAME}:${env.IMAGE_TAG} 推送成功."
                        if (params.PUSH_LATEST_TAG) {
                            docker.image("${env.FULL_IMAGE_NAME}:${env.IMAGE_TAG}").push('latest')
                            echo "镜像 ${env.FULL_IMAGE_NAME}:latest 推送成功."
                        }
                    }
                }
            }
        }
    }

    post {
        always {
            echo 'Pipeline 结束.'
            cleanWs()
        }
        // success { ... }
        // failure { ... }
    }
}