pipeline{
    agent any
    tools {
        maven 'M3'
    }
    stages{
        stage('Maven Build'){
            steps{
                sh "mvn clean package"
            }
        }
        stage('Docker Build'){
            steps{
                sh "docker build . -t vilasvarghese/mywebapp:${dockerTag()}"
            }
        }
        stage('DockerHub Push Image'){
            steps{
                withCredentials([string(credentialsId: 'docker-hub', variable: 'dockerPwd')]) {
                    sh "docker login -u vilasvarghese -p ${dockerPwd}"
                }
                
                sh "docker push vilasvarghese/mywebapp:${dockerTag()}"
            }
        }
        stage('Docker Deploy Dev'){
            steps{
				sh(returnStdout: true, script: '''#!/bin/bash
				if ( docker ps -a | grep 'mywebapp' )
				then
					docker stop mywebapp
					docker rm -f mywebapp
				fi'''.stripIndent())
				sh "docker rmi vilasvarghese/mywebapp:${dockerTag()}"
				sh "docker run -d -p 8181:8080 --name mywebapp vilasvarghese/mywebapp:${dockerTag()}"
            }
        }
    }
}

def dockerTag(){
    def commitId = sh returnStdout: true, script: 'git rev-parse --short HEAD'
	return commitId
}