govi.deployment

pipeline {
    agent any

    environment {
        SSH_CREDENTIALS = 'your-ssh-credentials-id' // The ID of the SSH credentials in Jenkins
        REMOTE_USER = 'your-remote-user' // The user on the remote server
        REMOTE_HOST = 'your-remote-host' // The IP or hostname of the remote server
        REMOTE_DIR = '/path/to/your/app' // The directory on the remote server where the app will be deployed
    }

    stages {
        stage('Check Build Dependencies') {
            steps {
                script {
                    // Check if Node.js is installed locally
                    def nodeInstalled = sh(script: 'command -v node', returnStatus: true) == 0
                    if (!nodeInstalled) {
                        error("Node.js is not installed on the Jenkins build agent.")
                    }
                    // Check if npm is installed locally
                    def npmInstalled = sh(script: 'command -v npm', returnStatus: true) == 0
                    if (!npmInstalled) {
                        error("npm is not installed on the Jenkins build agent.")
                    }
                }
            }
        }

        stage('Clone Repository') {
            steps {
                git 'https://github.com/username/repository.git'
            }
        }

        stage('Install Dependencies') {
            steps {
                sh 'npm install'
            }
        }

        stage('Test') {
            steps {
                sh 'npm test'
            }
        }

        stage('Build') {
            steps {
                sh 'npm run build'
            }
        }

        stage('Check Remote Dependencies') {
            steps {
                sshagent(credentials: [SSH_CREDENTIALS]) {
                    sh """
                        ssh ${REMOTE_USER}@${REMOTE_HOST} << EOF
                        if ! command -v node &> /dev/null; then
                            echo "Node.js is not installed on the remote server. Please install Node.js."
                            exit 1
                        fi
                        if ! command -v npm &> /dev/null; then
                            echo "npm is not installed on the remote server. Please install npm."
                            exit 1
                        fi
                        if ! command -v pm2 &> /dev/null; then
                            echo "PM2 is not installed on the remote server. Installing PM2..."
                            npm install -g pm2
                        fi
                        EOF
                    """
                }
            }
        }

        stage('Deploy') {
            steps {
                sshagent(credentials: [SSH_CREDENTIALS]) {
                    sh """
                        scp -r * ${REMOTE_USER}@${REMOTE_HOST}:${REMOTE_DIR}
                        ssh ${REMOTE_USER}@${REMOTE_HOST} << EOF
                        cd ${REMOTE_DIR}
                        npm install --production
                        pm2 restart all || pm2 start app.js --name "my-app"
                        EOF
                    """
                }
            }
        }
    }

    post {
        success {
            echo 'Deployment successful!'
        }
        failure {
            echo 'Deployment failed.'
        }
    }
}