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"
        GITOPS_BRANCH   = "main"
    }

    stages {

        stage('Checkout Source Code') {
            steps {
                echo "Cloning main app 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('Set Environment') {
            steps {
                script {
                    if (env.BRANCH_NAME == 'dev') {
                        env.DEPLOY_OVERLAY = 'overlays/dev'
                    } else if (env.BRANCH_NAME == 'staging') {
                        env.DEPLOY_OVERLAY = 'overlays/staging'
                    } else if (env.BRANCH_NAME == 'production') {
                        env.DEPLOY_OVERLAY = 'overlays/production'
                    } else {
                        error("Branch tidak dikenali! Harus dev / staging / production.")
                    }

                    echo "Environment selected → ${env.DEPLOY_OVERLAY}"
                }
            }
        }

        stage('Update GitOps Repo') {
            steps {
                script {
                    echo "Updating manifests in GitOps repo..."
                    withCredentials([usernamePassword(credentialsId: 'gitea-token-gitops', usernameVariable: 'GITEA_USER', passwordVariable: 'GITEA_PASS')]) {
                        sh '''
                        rm -rf gitops
                        git -c http.sslVerify=false clone -b $GITOPS_BRANCH https://$GITEA_USER:$GITEA_PASS@git.winteraccess.id/syifa/datasiswa-gitops.git gitops
                        cd gitops

                        # Update tag image backend & frontend
                        sed -i "s|${REGISTRY}/${BACKEND_NAME}:[^ ]*|${BACKEND_TAG}|g" ${DEPLOY_OVERLAY}/patch-deployment.yaml
                        sed -i "s|${REGISTRY}/${FRONTEND_NAME}:[^ ]*|${FRONTEND_TAG}|g" ${DEPLOY_OVERLAY}/patch-deployment.yaml

                        git config user.name "jenkins"
                        git config user.email "jenkins@gitea.local"
                        git add .
                        git commit -m "Update ${DEPLOY_OVERLAY} → backend:${BUILD_NUMBER}, frontend:${BUILD_NUMBER}" || echo "No changes"
                        git push origin $GITOPS_BRANCH
                        '''
                    }
                }
            }
        }
    }

    post {
        success {
            echo "Deployment successful to ${DEPLOY_OVERLAY}"
        }
        failure {
            echo "Deployment failed, check logs."
        }
        always {
            cleanWs()
            echo "Pipeline finished and workspace cleaned."
        }
    }
}