pipeline {
    agent any

    environment {
        DOCKERHUB_CREDENTIALS = credentials('dockerhub-creds')
        DOCKER_IMAGE = "vipin2025devops/myapp"
        K8S_DEPLOYMENT = "k8s/deployment.yaml"
    }

    stages {
        stage('Checkout') {
            steps {
                git branch: 'main', url: 'https://git.opsmonsters.in/vipin.p/my-react-app'
            }
        }

        stage('Build Docker Image') {
            steps {
                script {
                    def imageTag = "build-${env.BUILD_NUMBER}"
                    sh "docker build -t ${DOCKER_IMAGE}:${imageTag} ."
                    sh "docker tag ${DOCKER_IMAGE}:${imageTag} ${DOCKER_IMAGE}:latest"
                    env.IMAGE_TAG = imageTag
                }
            }
        }

        stage('Push to DockerHub') {
            steps {
                script {
                    sh "echo $DOCKERHUB_CREDENTIALS_PSW | docker login -u $DOCKERHUB_CREDENTIALS_USR --password-stdin"
                    sh "docker push ${DOCKER_IMAGE}:${IMAGE_TAG}"
                    sh "docker push ${DOCKER_IMAGE}:latest"
                }
            }
        }

        stage('Deploy to Kubernetes') {
            steps {
                script {
                    sh """
                    sed 's|IMAGE_PLACEHOLDER|${DOCKER_IMAGE}:${IMAGE_TAG}|g' ${K8S_DEPLOYMENT} | kubectl apply -f -
                    """
                }
            }
        }
    }
}