pipeline {
    agent any

    environment {
        REGISTRY        = "docker.io/syifamaulidya"
        BACKEND_NAME    = "backend-app"
        FRONTEND_NAME   = "frontend-app"
        GITOPS_REPO     = "https://git.winteraccess.id/syifa/datasiswa-gitops.git"
    }

    stages {
        stage('Checkout Source Code') {
            steps {
                echo "Cloning main application repository..."
                checkout scm
            }
        }

        stage('Build & Push Backend') {
            steps {
                script {
                    echo "Building backend image..."
                    withCredentials([usernamePassword(credentialsId: 'gitops-dockerhub', usernameVariable: 'DOCKER_USER', passwordVariable: 'DOCKER_PASS')]) {
                        sh '''
                        docker login -u $DOCKER_USER -p $DOCKER_PASS
                        cd backend
                        docker build -t $REGISTRY/$BACKEND_NAME:$BUILD_NUMBER .
                        docker push $REGISTRY/$BACKEND_NAME:$BUILD_NUMBER
                        docker tag $REGISTRY/$BACKEND_NAME:$BUILD_NUMBER $REGISTRY/$BACKEND_NAME:latest
                        docker push $REGISTRY/$BACKEND_NAME:latest
                        '''
                    }
                    env.BACKEND_TAG = "${REGISTRY}/${BACKEND_NAME}:${BUILD_NUMBER}"
                }
            }
        }

        stage('Build & Push Frontend') {
            steps {
                script {
                    echo "Building frontend image..."
                    withCredentials([usernamePassword(credentialsId: 'gitops-dockerhub', usernameVariable: 'DOCKER_USER', passwordVariable: 'DOCKER_PASS')]) {
                        sh '''
                        docker login -u $DOCKER_USER -p $DOCKER_PASS
                        cd frontend
                        docker build -t $REGISTRY/$FRONTEND_NAME:$BUILD_NUMBER .
                        docker push $REGISTRY/$FRONTEND_NAME:$BUILD_NUMBER
                        docker tag $REGISTRY/$FRONTEND_NAME:$BUILD_NUMBER $REGISTRY/$FRONTEND_NAME:latest
                        docker push $REGISTRY/$FRONTEND_NAME:latest
                        '''
                    }
                    env.FRONTEND_TAG = "${REGISTRY}/${FRONTEND_NAME}:${BUILD_NUMBER}"
                }
            }
        }

        stage('Update GitOps Repos (dev, staging, production)') {
            steps {
                script {
                    def branches = [
                        [name: "dev", overlay: "overlays/dev"],
                        [name: "staging", overlay: "overlays/staging"],
                        [name: "prod", overlay: "overlays/production"]
                    ]

                    withCredentials([usernamePassword(credentialsId: 'gitea-token-gitops', usernameVariable: 'GITEA_USER', passwordVariable: 'GITEA_PASS')]) {
                        branches.each { envSet ->
                            sh """
                            echo "=============================="
                            echo "Updating GitOps for branch: ${envSet.name}"
                            echo "=============================="

                            # Install yq kalau belum ada
                            if ! command -v ./yq &> /dev/null; then
                                echo "Installing yq locally..."
                                wget -qO ./yq https://github.com/mikefarah/yq/releases/latest/download/yq_linux_amd64
                                chmod +x ./yq
                            fi

                            # Clone branch GitOps yang sesuai
                            rm -rf gitops
                            git -c http.sslVerify=false clone -b ${envSet.name} https://$GITEA_USER:$GITEA_PASS@git.winteraccess.id/syifa/datasiswa-gitops.git gitops
                            cd gitops

                            # Update image tags
                            echo "Updating ${envSet.overlay}/patch-deployment.yaml..."
                            ../yq e -i ".spec.template.spec.containers[] |= select(.name == \\"backend\\").image = env(BACKEND_TAG)" ${envSet.overlay}/patch-deployment.yaml
                            ../yq e -i ".spec.template.spec.containers[] |= select(.name == \\"frontend\\").image = env(FRONTEND_TAG)" ${envSet.overlay}/patch-deployment.yaml

                            # Commit & push
                            git config user.name "jenkins"
                            git config user.email "jenkins@gitea.local"
                            git add .
                            git commit -m "Update ${envSet.overlay}: backend=${BUILD_NUMBER}, frontend=${BUILD_NUMBER}" || echo "No changes to commit"
                            git push origin ${envSet.name}

                            cd ..
                            rm -rf gitops
                            """
                        }
                    }
                }
            }
        }
    }

    post {
        success {
            echo "✅ GitOps update successful — all branches (dev, staging, prod) updated!"
        }
        failure {
            echo "❌ Pipeline failed, check Jenkins logs for details."
        }
        always {
            cleanWs()
            echo "🧹 Workspace cleaned up."
        }
    }
}