pipeline {

    agent {
        kubernetes {
            inheritFrom 'frontend-agent'  // dein Pod Template – node-builder Container muss drin sein
        }
    }

    // ============================================================
    // Konfiguration – hier anpassen
    // ============================================================
    environment {
        NEXUS_URL         = 'registry.nexus.deinedorfapp.de'
        NEXUS_CREDENTIAL  = 'Nexus'
        IMAGE_NAME        = 'frontend'
        IMAGE_TAG         = "${env.BUILD_NUMBER}"
        IMAGE_FULL        = "${NEXUS_URL}/${IMAGE_NAME}:${IMAGE_TAG}"
        IMAGE_LATEST      = "${NEXUS_URL}/${IMAGE_NAME}:latest"
    }
    // ============================================================

    options {
        timestamps()
        disableConcurrentBuilds()
        buildDiscarder(logRotator(numToKeepStr: '10'))
    }

    stages {

        stage('Checkout') {
            steps {
                echo ">>> Quellcode auschecken"
                checkout scm
            }
        }

        stage('Dependencies installieren') {
            steps {
                container('frontend-builder') {
                    echo ">>> npm install"
                    sh 'npm ci'
                }
            }
        }

        stage('Lint') {
            steps {
                container('frontend-builder') {
                    echo ">>> ESLint prüfen"
                    sh 'npm run lint || true'  // Fehler werden geloggt aber Build läuft weiter
                }
            }
        }

        stage('Build (Vite)') {
            steps {
                container('frontend-builder') {
                    echo ">>> Vite Production Build"
                    sh 'npm run build'
                }
            }
        }

        stage('Docker Image bauen') {
            steps {
                container('docker-builder') {
                    echo ">>> Docker Image wird gebaut: ${IMAGE_FULL}"
                    sh """
                        docker build \
                            --build-arg BUILD_NUMBER=${env.BUILD_NUMBER} \
                            -t ${IMAGE_FULL} \
                            -t ${IMAGE_LATEST} \
                            .
                    """
                }
            }
        }

        stage('Push zu Nexus') {
            steps {
                container('docker-builder') {
                    echo ">>> Push zu Nexus Docker Registry"
                    withCredentials([usernamePassword(
                        credentialsId: "${NEXUS_CREDENTIAL}",
                        usernameVariable: 'NEXUS_USER',
                        passwordVariable: 'NEXUS_PASS'
                    )]) {
                        sh "echo \${NEXUS_PASS} | docker login ${NEXUS_URL} -u \${NEXUS_USER} --password-stdin"
                        sh "docker push ${IMAGE_FULL}"
                        sh "docker push ${IMAGE_LATEST}"
                    }
                }
            }
        }

        stage('Aufräumen') {
            steps {
                container('docker-builder') {
                    echo ">>> Lokale Docker Images entfernen"
                    sh "docker rmi ${IMAGE_FULL} || true"
                    sh "docker rmi ${IMAGE_LATEST} || true"
                }
            }
        }
    }

    post {
        success {
            echo ">>> Build erfolgreich! Image verfügbar unter: ${IMAGE_FULL}"
        }
        failure {
            echo ">>> Build fehlgeschlagen! Bitte Logs prüfen."
        }
    }
}