jenkinsfile

pipeline {
    agent any
    environment {
        GITHUB_REPO = "https://github.com/homeless-code-team/homeless-cde-msa.git"
    }
    stages {
        stage('Checkout') {
            steps {
                echo "===== [Checkout] GitHub에서 저장소를 Pull 합니다. ====="
                withCredentials([usernamePassword(credentialsId: 'gitToken', usernameVariable: 'GIT_USER', passwordVariable: 'GIT_PASS')]) {
                    sh '''
                        if [ ! -d "homeless-cde-msa/.git" ]; then
                            echo "🚀 Repository does not exist. Cloning..."
                            git clone https://$GIT_USER:$GIT_PASS@github.com/homeless-code-team/homeless-cde-msa.git
                        else
                            echo "✅ Repository exists. Pulling latest changes..."
                        fi
                        cd homeless-cde-msa
                        git reset --hard
                        git pull origin develop
                    '''
                }
                echo "===== [Checkout] 완료 ====="
            }
        }
        
        stage('Detect Changed Files') {
            steps {
                echo "===== [Detect Changed Files] 변경된 파일들을 감지합니다. ====="
                script {
                    def changedFiles = sh(script: '''
                        cd homeless-cde-msa
                        git diff --name-only HEAD~1 HEAD || echo ""
                    ''', returnStdout: true).trim()
                    
                    echo "🔍 Changed files: ${changedFiles}"

                    def changedModules = sh(script: """
                        echo "${changedFiles}" | awk -F'/' '{print \$1}' | sort -u | grep -E '(-server|-service)' || echo ""
                    """, returnStdout: true).trim()
                    
                    echo "🚀 Changed modules (servers & services): ${changedModules}"
                    
                    def dockerComposeChanged = sh(script: '''
                        echo "${changedFiles}" | grep "docker-compose.yaml" || echo ""
                    ''', returnStdout: true).trim()
                    echo "📄 docker-compose.yaml changed: ${dockerComposeChanged}"
                    
                    def configServerChanged = sh(script: '''
                        echo "${changedFiles}" | grep "config-service" || echo ""
                    ''', returnStdout: true).trim()
                    echo "⚙️ Config Service changed: ${configServerChanged}"
                    
                    env.CHANGED_MODULES = changedModules ? changedModules : "none"
                    env.DOCKER_COMPOSE_CHANGED = dockerComposeChanged ? "yes" : "no"
                    env.CONFIG_SERVER_CHANGED = configServerChanged ? "yes" : "no"
                    
                    if (configServerChanged) {
                        env.CHANGED_MODULES = "all"
                    }
                    
                    echo "=== 최종 CHANGED_MODULES: ${env.CHANGED_MODULES} ==="
                }
                echo "===== [Detect Changed Files] 완료 ====="
            }
        }

        stage('Build JAR Files') {
            when { expression { return env.CHANGED_MODULES != "none" || env.CONFIG_SERVER_CHANGED == "yes" } }
            steps {
                echo "===== [Build JAR Files] 변경된 모듈에 대해 JAR 빌드를 진행합니다. ====="
                script {
                    def modules = env.CHANGED_MODULES.tokenize("\n")
                    if (env.CONFIG_SERVER_CHANGED == "yes") {
                        modules.add("config-service")
                    }
                    modules.each { module ->
                        echo "🔨 [${module}] 빌드를 시작합니다."
                        sh """
                        (cd homeless-cde-msa/${module} && chmod +x ./gradlew && ./gradlew clean build -x test)
                        """
                    }
                }
                echo "===== [Build JAR Files] 완료 ====="
            }
        }

        stage('Build & Push Docker Images') {
            when { expression { return env.CHANGED_MODULES != "none" } }
            steps {
                echo "===== [Build & Push Docker Images] Docker 이미지 빌드 및 푸시를 진행합니다. ====="
                withCredentials([usernamePassword(credentialsId: 'docker-hub-credentials', usernameVariable: 'DOCKER_USER', passwordVariable: 'DOCKER_PASS')]) {
                    sh '''
                    echo "$DOCKER_PASS" | docker login -u "$DOCKER_USER" --password-stdin
                    '''
                }
                script {
                    def modules = env.CHANGED_MODULES.tokenize("\n")
                    if (env.CONFIG_SERVER_CHANGED == "yes") {
                        modules.add("config-service")
                    }
                    modules.each { module ->
                        echo "🐳 [${module}] Docker 이미지 빌드 및 푸시를 시작합니다."
                        sh """
                        echo ">> Docker build for ${module}"
                        docker build -t sihyogeon/homeless-cde-msa:${module} homeless-cde-msa/${module}
                        echo ">> Docker push for ${module}"
                        docker push sihyogeon/homeless-cde-msa:${module}
                        """
                    }
                }
                echo "===== [Build & Push Docker Images] 완료 ====="
            }
        }

        stage('Copy docker-compose.yaml to EC2') {
            steps {
                echo "===== [Copy docker-compose.yaml to EC2] 업데이트된 docker-compose.yaml 파일을 EC2로 전송합니다. ====="
                withCredentials([sshUserPrivateKey(credentialsId: 'jenkins-ec2-key', keyFileVariable: 'SSH_KEY')]) {
                    sh '''
                    echo ">> Copy docker-compose.yaml to EC2"
                    scp -o StrictHostKeyChecking=no -i $SSH_KEY homeless-cde-msa/docker-compose.yaml ubuntu@3.35.152.209:/home/ubuntu/app/docker-compose.yaml
                    '''
                }
                echo "===== [Copy docker-compose.yaml to EC2] 완료 ====="
            }
        }

        stage('Deploy to EC2') {
            steps {
                echo "===== [Deploy to EC2] EC2에 배포를 진행합니다. ====="
                withCredentials([sshUserPrivateKey(credentialsId: 'jenkins-ec2-key', keyFileVariable: 'SSH_KEY')]) {
                    sh '''
                    echo ">> Deploying to EC2..."
                    ssh -o StrictHostKeyChecking=no -i $SSH_KEY ubuntu@3.35.152.209 << 'EOF'
                        cd /home/ubuntu/app
                        docker-compose pull
                        docker-compose up -d
EOF
                    '''
                }
                echo "===== [Deploy to EC2] 완료 ====="
            }
        }
    }
    
    post {
        always {
            echo "===== Pipeline 종료 ====="
        }
    }
}