appname = "harvard-university-portal.war"

projectdeploy = "harvard-university-portal"
projectname = "hv-portal"
runninguser = 'hvportal'

projectpath = "/home/${runninguser}/hv-portal/source"
backuppath = "/home/${runninguser}/hv-portal/backups"
deploypath = "/opt/tomcat/webapps"

gitlink = 'http://gitlab.elroydevops.tech/lab/harvard-university-portal.git'

buildscript = "mvn clean package"

def startProcess() {
    stage('Start') {
        def filePath = "${deploypath}/${appname}"
        def fileExists = sh(script: "[ -e ${filePath} ]", returnStatus: true)
        if (fileExists == 0) {
            echo "Project is already running."
        } else {
            sh(script:""" sudo su - $runninguser -c 'rm -rf ${projectpath}/target' """, label:'clear old build')
            sh(script:""" sudo su - $runninguser -c 'cd ${projectpath} && ${buildscript}' """, label:'build project')
            sh(script:""" sudo su - $runninguser -c 'cp ${projectpath}/target/${appname} ${deploypath}' """, label:'copy .war file project into webserver')
            sh(script:""" sudo su - $runninguser -c 'sudo systemctl restart tomcat' """, label:'restart webserver')
        }
    }
}

def stopProcess() {
    stage('Stop') {
        sh(script:""" sudo su - $runninguser -c 'rm -f ${deploypath}/${appname}' """, label:'delete .war file project on webserver')
        sh(script:""" sudo su - $runninguser -c 'sudo rm -r ${deploypath}/${projectdeploy}' """, label:'delete folder project on webserver')
        sh(script:""" sudo su - $runninguser -c 'sudo systemctl restart tomcat' """, label:'restart webserver')
    }
}

def updateProcess() {
    stage('Checkout') {
        if (params.Hash == "")
            error("Need hash for checkout")
        checkout([$class: 'GitSCM', branches: [[name: params.Hash ]],
                 userRemoteConfigs: [[credentialsId: 'jenkins-gitlab-user',url: gitlink]]])
    }
    stage('Build') {
        try {
            sh(script:""" sudo su - $runninguser -c 'rm -rf ${projectpath}/*' """, label:'delete old source')
            def currentDir = pwd()
            sh(script:""" sudo su - $runninguser -c 'cp -r ${currentDir}/* ${projectpath}' """, label:'update source')
        } catch (Exception e) {
            error("Build thất bại")
        }
    }
    stage('Deploy') {
        sh(script:""" sudo su - $runninguser -c 'rm -f ${deploypath}/${appname}' """, label:'delete file .war project on webserver')
        sh(script:""" sudo su - $runninguser -c 'sudo rm -r ${deploypath}/${projectdeploy}' """, label:'delete folder project on webserver')
        sh(script:""" sudo su - $runninguser -c 'cd ${projectpath} && ${buildscript}' """, label:'build project')
        sh(script:""" sudo su - $runninguser -c 'cp ${projectpath}/target/${appname} ${deploypath}' """, label:'copy .war file project into webserver')
        sh(script:""" sudo su - $runninguser -c 'sudo cp -r ${projectpath}/target/${projectdeploy} ${deploypath}' """, label:'delete folder project on webserver')
        sh(script:""" sudo su - $runninguser -c 'sudo systemctl restart tomcat' """, label:'restart webserver')
    }
    stage('Backup') {
        def currentDatetime = sh(script: 'date +\'%Y-%m-%d-%H-%M-%S\'', returnStdout: true).trim()
        def archiveName = "${projectname}_${params.Hash}_${currentDatetime}.tar.gz"
        sh(script:"""tar -czvf ${backuppath}/${archiveName} -C ${projectpath} .""", label:'zip project')
		sh(script:"""sudo su $runninguser -c "find ${backuppath} -type f -printf '%T@\\t%p\\n' | sort -t \$'\\t' -g |  head -n -3 |  cut -d \$'\\t' -f 2-|xargs rm -f" """,label:'Delete all backup,keep 3 newest file')
        echo "backup ${archiveName} success."
    }
}

def Rollback() {
    stage("Rollback") {
        def rollbackFile = params.Rollback_version
        sh(script: "tar -xzvf ${backuppath}/${rollbackFile} -C ${projectpath}", label: 'rollbackLabel')

        sh(script:""" sudo su - $runninguser -c 'rm -f ${deploypath}/${appname}' """, label:'delete file .war project on webserver')
        sh(script:""" sudo su - $runninguser -c 'sudo rm -r ${deploypath}/${projectdeploy}' """, label:'delete folder project on webserver')
        sh(script:""" sudo su - $runninguser -c 'cd ${projectpath} && ${buildscript}' """, label:'build project')
        sh(script:""" sudo su - $runninguser -c 'cp ${projectpath}/target/${appname} ${deploypath}' """, label:'copy .war file project into webserver')
        sh(script:""" sudo su - $runninguser -c 'sudo cp -r ${projectpath}/target/${projectdeploy} ${deploypath}' """, label:'delete folder project on webserver')
        sh(script:""" sudo su - $runninguser -c 'sudo systemctl restart tomcat' """, label:'restart webserver')
        echo "Rollback ${rollbackFile} success"
    }
}

node(params.Server) {
    stage('Server '+ params.Server){
        echo 'Server '+ params.Server
    }
    currentBuild.displayName = params.Action
    if (params.Action == "Start") {
        startProcess()
    }
    if (params.Action == "Stop") {
        stopProcess()
    }
    if (params.Action == "Restart") {
        stopProcess()
        startProcess()
    }
    if (params.Action == "Update") {
        updateProcess()
    }  
    if (params.Action == "Backup") {
        backupProcess()
    }  
    if (params.Action == "Rollback") {
        Rollback()
    } 
}