pipeline {
    agent any
    
    options {
        buildDiscarder(logRotator(numToKeepStr: '10'))
        timeout(time: 60, unit: 'MINUTES')
        timestamps()
    }
    
    tools {
        go 'go'  // 使用Jenkins配置的Go工具
    }
    
    environment {
        // 目标服务器配置
        DEPLOY_SERVER = '116.62.163.84'
        
        // Go相关环境变量
        GO_VERSION = '1.21'
        CGO_ENABLED = '0'
        GOOS = 'linux'
        
        // Docker相关环境变量
        IMAGE_NAME = 'golang-demo'
        IMAGE_TAG = "${BUILD_NUMBER}"
        
        // SonarQube配置（如果需要Go代码扫描）
        SONAR_HOST_URL = 'http://116.62.163.84:15010'
        SONAR_PROJECT_KEY = 'golang-demo'
        SONAR_TOKEN = 'squ_7e4217cabd0faae6f3b8ee359b3b8e2ac52eb69a'
    }
    
    stages {
        stage('Checkout') {
            steps {
                echo '🔄 开始检出代码...'
                checkout scm
                
                script {
                    env.GIT_COMMIT_SHORT = sh(
                        script: "git rev-parse --short HEAD",
                        returnStdout: true
                    ).trim()
                }                
                echo "📋 Git提交ID: ${env.GIT_COMMIT_SHORT}"
            }
        }
        
        stage('环境检查') {
            steps {
                echo '🔍 检查构建环境...'
                script {
                    sh '''
                        echo "=== Go版本 ==="
                        go version
                        
                        echo "=== Go环境信息 ==="
                        go env
                        
                        echo "=== Docker版本 ==="
                        docker --version
                        
                        echo "=== 工作目录 ==="
                        pwd && ls -la
                    '''
                    
                    echo "✅ 构建环境检查完成"
                }
            }
        }
        
        stage('依赖管理') {
            steps {
                echo '📦 下载Go依赖...'
                sh '''
                    echo "下载依赖..."
                    go mod download
                    
                    echo "验证依赖..."
                    go mod verify
                    
                    echo "整理依赖..."
                    go mod tidy
                    
                    echo "✅ 依赖管理完成"
                '''
            }
        }
        
        stage('代码检查') {
            steps {
                echo '🔍 运行Go代码检查...'
                sh '''
                    echo "运行go vet..."
                    go vet ./...
                    
                    echo "运行go fmt检查..."
                    if [ "$(gofmt -l . | wc -l)" -gt 0 ]; then
                        echo "❌ 代码格式不正确，需要运行 go fmt"
                        gofmt -l .
                        exit 1
                    fi
                    
                    echo "✅ 代码检查通过"
                '''
            }
        }
        
        stage('单元测试') {
            steps {
                echo '🧪 运行单元测试...'
                sh '''
                    echo "运行测试并生成覆盖率报告..."
                    go test -v -race -coverprofile=coverage.out -covermode=atomic ./...
                    
                    echo "生成HTML覆盖率报告..."
                    go tool cover -html=coverage.out -o coverage.html
                    
                    echo "显示覆盖率统计..."
                    go tool cover -func=coverage.out
                '''
            }
            post {
                always {
                    script {
                        // 发布覆盖率报告
                        if (fileExists('coverage.html')) {
                            publishHTML([
                                allowMissing: false,
                                alwaysLinkToLastBuild: true,
                                keepAll: true,
                                reportDir: '.',
                                reportFiles: 'coverage.html',
                                reportName: 'Go Coverage Report'
                            ])
                            echo '✅ Go覆盖率报告已发布'
                        }
                        
                        // 归档覆盖率文件
                        if (fileExists('coverage.out')) {
                            archiveArtifacts artifacts: 'coverage.out', fingerprint: true
                        }
                    }
                }
            }
        }
        
        stage('代码质量扫描') {
            steps {
                echo '🔍 运行SonarQube代码扫描...'
                script {
                    try {
                        // 使用sonar-scanner for Go项目
                        sh """
                            # 创建sonar-project.properties文件
                            cat > sonar-project.properties << EOF
sonar.projectKey=${SONAR_PROJECT_KEY}
sonar.projectName=golang-demo
sonar.projectVersion=1.0.0
sonar.sources=.
sonar.exclusions=vendor/**,**/*_test.go,**/testdata/**
sonar.tests=.
sonar.test.inclusions=**/*_test.go
sonar.go.coverage.reportPaths=coverage.out
sonar.host.url=${SONAR_HOST_URL}
sonar.login=${SONAR_TOKEN}
EOF
                            
                            # 运行sonar-scanner
                            sonar-scanner || echo "SonarQube扫描工具未安装，跳过扫描"
                        """
                        echo "✅ SonarQube代码扫描完成"
                    } catch (Exception e) {
                        echo "⚠️ SonarQube扫描失败，继续构建流程: ${e.getMessage()}"
                    }
                }
            }
        }
        
        stage('编译构建') {
            steps {
                echo '🔨 编译Go应用程序...'
                sh '''
                    echo "开始编译..."
                    CGO_ENABLED=0 GOOS=linux go build \\
                        -ldflags="-w -s -X main.gitCommit=${GIT_COMMIT_SHORT}" \\
                        -o golang-demo .
                    
                    echo "验证二进制文件..."
                    ls -lh golang-demo
                    
                    echo "✅ 编译完成"
                '''
            }
            post {
                success {
                    script {
                        if (fileExists('golang-demo')) {
                            archiveArtifacts artifacts: 'golang-demo', fingerprint: true
                        }
                    }
                }
            }
        }
        
        stage('构建Docker镜像') {
            steps {
                echo '🐳 构建Docker镜像...'
                script {
                    try {
                        // 清理旧镜像
                        sh 'docker image prune -f || true'
                        
                        echo "开始构建Docker镜像: ${IMAGE_NAME}:${IMAGE_TAG}"
                        
                        // 使用传统Docker构建，参考Java项目的成功模式
                        timeout(time: 20, unit: 'MINUTES') {
                            sh """
                                # 确保二进制文件存在并有执行权限
                                ls -la golang-demo
                                chmod +x golang-demo
                                
                                # 使用传统Docker构建（无需构建参数，直接复制已编译文件）
                                docker build -t ${IMAGE_NAME}:${IMAGE_TAG} -t ${IMAGE_NAME}:latest .
                                echo "✅ Docker镜像构建完成"
                                
                                # 验证镜像
                                docker images ${IMAGE_NAME}:${IMAGE_TAG}
                            """
                        }
                        
                    } catch (Exception e) {
                        echo "❌ Docker构建失败: ${e.getMessage()}"
                        
                        // 显示更多调试信息
                        sh '''
                            echo "=== Docker系统信息 ==="
                            docker system info
                            echo "=== Docker磁盘使用情况 ==="
                            docker system df
                            echo "=== 当前镜像列表 ==="
                            docker images
                        '''
                        
                        throw e
                    }
                }
            }
        }
        
        stage('镜像测试') {
            steps {
                echo '🧪 测试Docker镜像...'
                script {
                    try {
                        sh """
                            # 启动测试容器
                            docker run -d --name test-${BUILD_NUMBER} -p 8081:8080 ${IMAGE_NAME}:${IMAGE_TAG}
                            
                            # 等待容器启动
                            sleep 10
                            
                            # 测试健康检查
                            curl -f http://localhost:8081/health || exit 1
                            curl -f http://localhost:8081/ping || exit 1
                            curl -f http://localhost:8081/version || exit 1
                            
                            echo "✅ 镜像测试通过"
                        """
                    } finally {
                        // 清理测试容器
                        sh """
                            docker stop test-${BUILD_NUMBER} || true
                            docker rm test-${BUILD_NUMBER} || true
                        """
                    }
                }
            }
        }
        
        stage('部署应用') {
            steps {
                echo '🚀 部署应用到服务器...'
                script {
                    // 根据分支决定部署端口和配置
                    def deployPort = '15021'
                    def containerName = 'golang-demo'
                    def environment = 'production'
                    
                    if (env.BRANCH_NAME == 'develop' || env.BRANCH_NAME?.startsWith('feature/')) {
                        deployPort = '15022'  // 测试环境使用不同端口
                        containerName = 'golang-demo-test'
                        environment = 'test'
                    }
                    
                    // 传输镜像并部署
                    sshagent(['deploy-server-ssh-key']) {
                        sh """
                            # 保存Docker镜像为tar文件
                            echo "📤 保存镜像为文件..."
                            docker save ${IMAGE_NAME}:${IMAGE_TAG} -o ${IMAGE_NAME}-${IMAGE_TAG}.tar
                            
                            # 传输镜像文件到目标服务器
                            echo "📤 传输镜像到服务器..."
                            scp -o StrictHostKeyChecking=no ${IMAGE_NAME}-${IMAGE_TAG}.tar root@${DEPLOY_SERVER}:/tmp/
                            
                            # 在目标服务器上部署
                            ssh -o StrictHostKeyChecking=no root@${DEPLOY_SERVER} << 'EOF'
                                echo "🔄 在服务器上部署应用..."
                                
                                # 加载Docker镜像
                                docker load -i /tmp/${IMAGE_NAME}-${IMAGE_TAG}.tar
                                docker tag ${IMAGE_NAME}:${IMAGE_TAG} ${IMAGE_NAME}:latest
                                
                                # 停止并删除现有容器
                                docker stop ${containerName} || true
                                docker rm ${containerName} || true
                                
                                # 运行新容器
                                docker run -d --name ${containerName} \\
                                    -p ${deployPort}:8080 \\
                                    --restart unless-stopped \\
                                    -e GIN_MODE=release \\
                                    ${IMAGE_NAME}:${IMAGE_TAG}
                                
                                # 清理临时文件
                                rm -f /tmp/${IMAGE_NAME}-${IMAGE_TAG}.tar
                                
                                echo "✅ 应用部署完成，端口: ${deployPort}"
                                echo "🔗 访问地址: http://${DEPLOY_SERVER}:${deployPort}"
EOF
                            
                            # 清理本地临时文件
                            rm -f ${IMAGE_NAME}-${IMAGE_TAG}.tar
                        """
                    }
                    
                    echo "✅ 应用部署完成！"
                }
            }
        }
        
        stage('健康检查') {
            steps {
                echo '🏥 执行应用健康检查...'
                script {
                    // 等待应用启动
                    sleep(time: 30, unit: 'SECONDS')
                    
                    def deployPort = '15021'
                    if (env.BRANCH_NAME == 'develop' || env.BRANCH_NAME?.startsWith('feature/')) {
                        deployPort = '15022'
                    }
                    
                    try {
                        // Go应用的健康检查端点
                        def healthCheckUrl = "http://${DEPLOY_SERVER}:${deployPort}/health"
                        def response = sh(
                            script: "curl -s -o /dev/null -w '%{http_code}' ${healthCheckUrl} || echo '000'",
                            returnStdout: true
                        ).trim()
                        
                        if (response == "200") {
                            echo "✅ 应用健康检查通过"
                            
                            // 额外检查其他端点
                            def pingResponse = sh(
                                script: "curl -s -o /dev/null -w '%{http_code}' http://${DEPLOY_SERVER}:${deployPort}/ping || echo '000'",
                                returnStdout: true
                            ).trim()
                            
                            if (pingResponse == "200") {
                                echo "✅ Ping端点检查通过"
                            }
                            
                        } else {
                            echo "⚠️ 应用健康检查失败，HTTP状态码: ${response}"
                            echo "🔄 应用可能还在启动中..."
                            
                            // 再等待一段时间重试
                            sleep(time: 30, unit: 'SECONDS')
                            response = sh(
                                script: "curl -s -o /dev/null -w '%{http_code}' ${healthCheckUrl} || echo '000'",
                                returnStdout: true
                            ).trim()
                            
                            if (response == "200") {
                                echo "✅ 重试后健康检查通过"
                            } else {
                                echo "⚠️ 健康检查仍未通过，但不阻止构建"
                            }
                        }
                    } catch (Exception e) {
                        echo "⚠️ 健康检查异常: ${e.getMessage()}"
                    }
                }
            }
        }
    }
    
    post {
        always {
            script {
                echo '🧹 清理工作空间...'
                try {
                    // 清理Go构建产物
                    sh '''
                        rm -f golang-demo
                        rm -f coverage.out coverage.html
                        rm -f sonar-project.properties
                    '''
                    
                    // 清理Docker资源
                    sh '''
                        # 清理未使用的镜像
                        docker image prune -f || true
                        
                        # 清理构建缓存
                        docker builder prune -f || true
                    '''
                } catch (Exception e) {
                    echo "⚠️ 清理失败: ${e.getMessage()}"
                }
            }
        }
        
        success {
            script {
                echo '✅ 流水线执行成功！'
                
                def deployPort = '15020'
                if (env.BRANCH_NAME == 'develop' || env.BRANCH_NAME?.startsWith('feature/')) {
                    deployPort = '15021'
                }
                
                def message = """
🎉 Jenkins构建成功！

📋 项目: ${env.JOB_NAME}
🔢 构建号: ${env.BUILD_NUMBER}
🌿 分支: ${env.BRANCH_NAME ?: 'unknown'}
📝 提交: ${env.GIT_COMMIT_SHORT ?: 'unknown'}
⏱️ 持续时间: ${currentBuild.durationString}
🔗 构建链接: ${env.BUILD_URL}
🌐 应用地址: http://${DEPLOY_SERVER}:${deployPort}
                """
                
                echo message
            }
        }
        
        failure {
            script {
                echo '❌ 流水线执行失败！'
                def message = """
💥 Jenkins构建失败！

📋 项目: ${env.JOB_NAME}
🔢 构建号: ${env.BUILD_NUMBER}
🌿 分支: ${env.BRANCH_NAME ?: 'unknown'}
📝 提交: ${env.GIT_COMMIT_SHORT ?: 'unknown'}
⏱️ 持续时间: ${currentBuild.durationString}
🔗 构建链接: ${env.BUILD_URL}
📄 查看日志: ${env.BUILD_URL}console
                """
                
                echo message
                
                // 清理可能的测试容器
                sh '''
                    docker stop test-${BUILD_NUMBER} || true
                    docker rm test-${BUILD_NUMBER} || true
                '''
            }
        }
        
        cleanup {
            script {
                try {
                    // 清理工作空间
                    cleanWs()
                    echo "✅ 清理完成"
                } catch (Exception e) {
                    echo "⚠️ 清理失败: ${e.getMessage()}"
                }
            }
        }
    }
}