pipeline {
    agent any

    environment {
        // Replace with your actual registry URL (e.g., harbor.example.com or docker.io)
        REGISTRY_URL = 'localhost:5000' 
        IMAGE_NAME = 'hello-world-node'
        // The ID of the credentials you've stored in Jenkins for your registry
        REGISTRY_CREDENTIALS_ID = 'registry-credentials'
    }

    stages {
        stage('Checkout') {
            steps {
                // This stage is usually handled automatically by Jenkins when using a Multibranch Pipeline or SCM
                checkout scm
            }
        }

        stage('Build Docker Image') {
            steps {
                script {
                    echo "Building image: ${REGISTRY_URL}/${IMAGE_NAME}:${env.BUILD_NUMBER}"
                    // Build the image using the multistage Dockerfile
                    dockerImage = docker.build("${REGISTRY_URL}/${IMAGE_NAME}:${env.BUILD_NUMBER}", "./hello-world-node")
                }
            }
        }

        stage('Push to Registry') {
            steps {
                script {
                    // Log in to the registry using stored credentials and push the image
                    docker.withRegistry("http://${REGISTRY_URL}", REGISTRY_CREDENTIALS_ID) {
                        dockerImage.push()
                        dockerImage.push('latest')
                    }
                }
            }
        }

        stage('Cleanup') {
            steps {
                sh "docker rmi ${REGISTRY_URL}/${IMAGE_NAME}:${env.BUILD_NUMBER}"
                sh "docker rmi ${REGISTRY_URL}/${IMAGE_NAME}:latest"
            }
        }
    }

    post {
        success {
            echo 'Deployment successful!'
        }
        failure {
            echo 'Deployment failed. Check the logs for details.'
        }
    }
}