pipeline {
    agent any

    parameters {
        choice(
            name: 'ENV',
            choices: ['dev', 'preprod', 'prod'],
            description: 'Choisir l’environnement de déploiement'
        )
    }

    environment {
        REGISTRY_URL = "registry.wk-archi-o24a-15m-g3.fr"
        IMAGE_NAME = "the-tip-top-backend"
    }

    stages {

        stage('Init') {
            steps {
                script {
                    def currentBranch = sh(script: "git rev-parse --abbrev-ref HEAD", returnStdout: true).trim()
                    echo "🧭 Branche détectée : ${currentBranch}"

                    if (["dev", "preprod", "main"].contains(currentBranch)) {
                        env.ENV = (currentBranch == "main") ? "prod" : currentBranch
                    } else {
                        env.ENV = params.ENV ?: "dev"
                    }

                    env.TAG = "${env.ENV}-latest"
                    env.DEPLOY_PATH = "/srv/devops/the-tip-top/${env.ENV}"

                    echo """
                    🌍 Environnement = ${env.ENV}
                    🏷️ Tag Docker = ${env.TAG}
                    📂 Chemin de déploiement = ${env.DEPLOY_PATH}
                    """

                    sh "ls -l ${env.DEPLOY_PATH} || echo '⚠️ Dossier non accessible depuis Jenkins'"
                }
            }
        }

        stage('Checkout') {
            steps {
                echo "📦 Récupération du code source..."
                checkout scm
            }
        }

        stage('Tests & Qualité') {
            agent {
                docker {
                    image 'node:18-alpine'
                    args '-u root'
                }
            }
            steps {
                echo "🧪 Lancement des tests et analyse..."
                sh '''
                    npm ci
                    npm run lint || echo "⚠️ Erreurs de lint détectées"
                    npm test || echo "⚠️ Tests échoués — ignorés pour le déploiement"
                '''
            }
        }

        stage('Build Docker image') {
            steps {
                echo "🐳 Construction de l’image Docker backend..."
                sh """
                    docker build -t ${REGISTRY_URL}/${IMAGE_NAME}:${TAG} .
                    docker tag ${REGISTRY_URL}/${IMAGE_NAME}:${TAG} ${REGISTRY_URL}/${IMAGE_NAME}:latest
                """
            }
        }

        stage('Push to Registry') {
            steps {
                echo "📤 Envoi de l’image vers le registre..."
                withCredentials([usernamePassword(credentialsId: 'registry-credentials', usernameVariable: 'REG_USER', passwordVariable: 'REG_PASS')]) {
                    sh """
                        echo "$REG_PASS" | docker login ${REGISTRY_URL} -u "$REG_USER" --password-stdin
                        docker push ${REGISTRY_URL}/${IMAGE_NAME}:${TAG}
                        docker push ${REGISTRY_URL}/${IMAGE_NAME}:latest
                    """
                }
            }
        }

        stage('Backup before deploy') {
            steps {
                echo "💾 Sauvegarde de l’environnement ${env.ENV} avant déploiement..."
                sh '''
                    BACKUP_DIR="/srv/backups/the-tip-top/${ENV}/$(date +%F_%H-%M-%S)"
                    mkdir -p $BACKUP_DIR
                    echo "📦 Sauvegarde du docker-compose et logs..."
                    cp -r ${DEPLOY_PATH}/docker-compose.yml $BACKUP_DIR/ 2>/dev/null || true
                    cp -r ${DEPLOY_PATH}/logs $BACKUP_DIR/ 2>/dev/null || true
                    tar -czf ${BACKUP_DIR}.tar.gz -C $(dirname $BACKUP_DIR) $(basename $BACKUP_DIR)
                    rm -rf $BACKUP_DIR
                    echo "✅ Sauvegarde compressée : ${BACKUP_DIR}.tar.gz"

                    # (Optionnel) Transfert distant :
                    # scp ${BACKUP_DIR}.tar.gz backup@backup-server:/backups/the-tip-top/${ENV}/
                '''
            }
        }

        stage('Deploy') {
            steps {
                echo "🚀 Déploiement sur ${env.ENV}..."
                sh """
                    cd "${DEPLOY_PATH}"
                    docker compose pull backend
                    docker compose up -d --force-recreate backend
                """
            }
        }
    }

    post {
        success {
            echo "✅ Pipeline ${env.ENV} terminé avec succès !"
        }
        failure {
            echo "❌ Échec du pipeline ${env.ENV}."
        }
    }
}