pipeline {
    agent any

    environment {
        APP_NAME    = "petclinic"
        DOCKER_USER = "rizjosel"
        IMAGE_TAG   = "${BUILD_NUMBER}"
        IMAGE_NAME  = "${DOCKER_USER}/${APP_NAME}:${IMAGE_TAG}"
    }

    triggers {
        // Triggered by GitHub Pull Requests
        githubPullRequest()
    }

    stages {

        stage('List Workspace') {
            steps {
                sh 'ls -l'
            }
        }

        stage('CI / Unit Tests') {
            steps {
                script {
                    try {
                        // Run Gradle unit tests
                        sh './gradlew clean build -x test'
                        junit 'build/test-results/test/*.xml'
                    } catch (err) {
                        error "Unit tests failed!"
                    }
                }
            }
        }

        stage('CI / Docker Build') {
            steps {
                script {
                    try {
                        sh "docker build -t ${IMAGE_NAME} ."
                    } catch (err) {
                        error "Docker build failed!"
                    }
                }
            }
        }

        stage('CI / Docker Integration') {
            steps {
                script {
                    try {
                        // Start Docker container
                        sh "docker run -d --name ${APP_NAME}-test -p 8080:8080 ${IMAGE_NAME}"
                        sh "sleep 15" // wait for app to start

                        // Health check
                        sh "curl -f http://localhost:8080/actuator/health"
                    } catch (err) {
                        error "Docker integration tests failed!"
                    } finally {
                        // Clean up container
                        sh "docker stop ${APP_NAME}-test || true"
                        sh "docker rm ${APP_NAME}-test || true"
                    }
                }
            }
        }
    }
}