pipeline {
    agent any

    environment {
        REGISTRY = "myharbor.local:80"
        APP_NAME = "ecommerce-app" 
        IMAGE_NAME = "ecommerce-backend"
        IMAGE_TAG = "${REGISTRY}/library/${IMAGE_NAME}:${env.BRANCH_NAME}-${env.BUILD_NUMBER}"
        NAMESPACE = "ecommerce"
        // Pointing to the internal nerdctl/buildkit socket
        BUILDKIT_HOST = "unix:///run/buildkit/buildkitd.sock"
    }

    stages {
        stage('Checkout') {
            steps {
                checkout scm
            }
        }

        stage('Build Image') {
            steps {
                script {
                    // nerdctl needs to know which containerd socket to use
                    sh "docker build -t ${IMAGE_TAG} ."
                }
            }
        }

        stage('Push to Harbor') {
            steps {
                script {
                    withCredentials([usernamePassword(credentialsId: 'harbor-creds', passwordVariable: 'PASS', usernameVariable: 'USER')]) {
                        sh "docker login ${REGISTRY} -u ${USER} -p ${PASS}"
                        sh "docker push ${IMAGE_TAG}"
                    }
                }
            }
        }

        stage('Inject to K8s Cache') {
            steps {
                script {
                    // Since your agent is already using the containerd socket, 
                    // the image might already be in the cache, but this ensures it.
                    sh "docker save ${IMAGE_TAG} | sudo ctr -n k8s.io images import -"
                }
            }
        }

        stage('Deploy to K8s') {
            steps {
                script {
                    withCredentials([file(credentialsId: 'k8s-config', variable: 'KUBECONFIG')]) {
                        sh "kubectl --kubeconfig=${KUBECONFIG} patch deployment ${APP_NAME} -n ${NAMESPACE} --patch '{\"spec\": {\"template\": {\"spec\": {\"containers\": [{\"name\": \"${APP_NAME}\", \"image\": \"${IMAGE_TAG}\", \"imagePullPolicy\": \"Never\"}]}}}}'"
                        sh "kubectl --kubeconfig=${KUBECONFIG} rollout status deployment/${APP_NAME} -n ${NAMESPACE}"
                    }
                }
            }
        }
    }
}