#!groovy

/**
 * Deploy components to the D4Science Infrastructure (dev-only)
 *
 * Roberto Cirillo (ISTI-CNR)
 */

// related jenkins job: https://jenkins.d4science.org/job/gCubeDeployer/

def agent_root_folder = '/var/lib/jenkins'

if ("${params.report_number}"){
	// load the build report's content if present
	def text
	String reportURL = "https://code-repo.d4science.org/gCubeCI/gCubeReleases/raw/branch/master/open/${gCube_release_version}/build_commits.${params.report_number}.csv"
	if (reportURL){
		println "Pulling the report from Git at ${reportURL}"
		text = reportURL.toURL().getText()
		// parse the report and extract the data
		def components = parseBuildCommits(text)
		assert 0 < components.size(): "No component found in build_commits.${report_number}.csv"
		for (component in components) {
			// here we need to filter on keywords matching component's section 
		    println " $component"
		}
	}
}


def deployList
def backupList
if (params.deployFile) {
    println "Using custom deploy file"
    deployList = params.deployFile
}

pipeline {
    agent {
        label 'ansible'
    }
    options {
        ansiColor('xterm')
    }

    triggers {
//     every fifteen minutes (perhaps at :07, :22, :37, :52)
//       cron('H/15 * * * *')
//     once in every two hours slot between 9 AM and 5 PM every weekday (perhaps at 10:38 AM, 12:38 PM, 2:38 PM, 4:38 PM)
       cron('H H(9-16)/6 * * 1-5')
    }
    
    environment {
        AGENT_ROOT_FOLDER = "${agent_root_folder}"
        PENDING_DEPLOY_FOLDER="${agent_root_folder}/CD/"
        CD_ROOT_FOLDER = "${agent_root_folder}/ansible-repos/ansible-playbooks/d4science-ghn-cluster/CD"
        PIPELINE_BUILD_NUMBER = "${env.BUILD_NUMBER}"
        DEPLOY_FILE = "${PENDING_DEPLOY_FOLDER}deploy.${PIPELINE_BUILD_NUMBER}.csv"
        BACKUP_FILE = "${PENDING_DEPLOY_FOLDER}deploy.${PIPELINE_BUILD_NUMBER}.bck"
        DEPLOY_FOLDER= "${WORKSPACE}/CD-${PIPELINE_BUILD_NUMBER}"
        TRIGGER_JOB= "${params.TRIGGER_JOB}"
        TRIGGER_VERSION= "${params.TRIGGER_VERSION}"
        TRIGGER_HOST="${params.TRIGGER_HOST}"
        TRIGGER_CD="${params.TRIGGER_CD}"
        GCUBE_RELEASE_NUMBER = "${params.gCube_release_version}"
        REPORT_NUMBER = "${params.report_number}"
        
    }

    parameters {
         string(name: 'TRIGGER_JOB',
                 defaultValue: '',
                 description: 'Name of the service or job to deploy')
         string(name: 'TRIGGER_VERSION',
                 defaultValue: '',
                 description: 'service version to deploy')
         string(name: 'TRIGGER_HOST',
                 defaultValue: '',
                 description: 'Target Host / Host group where deploy the service')
         booleanParam(name: 'TRIGGER_CD',
                 defaultValue: true,
                 description: 'Set to false to avoid current deploy')
        string(name: 'gCube_release_version',
                defaultValue: '',
                description: 'The number of the gCube release. Leave blank if executed outside gCube release.')
        string(name: 'report_number',
                defaultValue: '',
                description: 'The build report number on Git to pull the notes. Leave blank if executed outside gCube release.')

        string(name: 'report',
                defaultValue: '',
                description: 'The build report. Leave blank to pull the build report from Git.  Leave blank if executed outside gCube release.')
                

    }

    stages {
        stage('Initialize environment') {
            steps {
                sh '''
                  date=`date`;
                  mkdir -p ${PENDING_DEPLOY_FOLDER}
                  mkdir -p "${DEPLOY_FOLDER}"
                  find "${PENDING_DEPLOY_FOLDER}" -type f -exec mv --target-directory="${DEPLOY_FOLDER}" '\'{'\'}  '\'+
                '''
            }
        }
        stage('Deploy from system') {
            when{
            	anyOf{
	                allOf{
	                    triggeredBy 'TimerTrigger'
	          // maybe we can add a new condition in order to consider the manual execution of this pipeline
	                    environment name: 'IS_SCHEDULED', value: 'True'
	                }
	         // in this case the pipeline is triggered by the gCubeBuilder pipeline       
            	 	equals(actual: "${${params.TRIGGER_JOB}}", expected: 'gCubeBuilder')   
            	}
            }
            steps {
                echo 'Cron build enabled. Deploy from system ongoing'
                script {
                	echo "pipeline triggered by $TRIGGER_JOB"
                	if("${${params.TRIGGER_JOB}}" == "gCubeBuilder"){
                		// do something
                		println("Pipeline triggered by gCubeBuilder")
                	}else{						
	 					def deployFolder="CD-${env.BUILD_NUMBER}";
	 					deployPendingJobs(deployFolder);						                	    
                	}
                }
                
            }
        }
        stage('Nothing to do ') {
            when{
                anyOf{
                    allOf{
                        triggeredBy 'TimerTrigger'
                        environment name: 'IS_SCHEDULED', value: 'False'
                    }
                }

            }
            steps {
                 echo 'Do Nothing: cron build disabled'
            }
        }
        stage('New pending deploy ') {
            when{
                environment name: 'IS_SCHEDULED', value: 'True'
                anyOf{
                    triggeredBy 'BuildUpstreamCause'
                    triggeredBy 'UpstreamCause'
                    triggeredBy 'UserIdCause'
                }
            }
            steps {
                sh '''
                   echo "Cron build enabled. New deploy of ${TRIGGER_JOB} - ${TRIGGER_VERSION} will be added to the deploy file"
                   touch $DEPLOY_FILE;
                   if grep -q \"\${TRIGGER_JOB}\" \${DEPLOY_FILE}; then
                       echo "component ${TRIGGER_JOB} already added. Nothing to add."                      
                   else
                       echo "${TRIGGER_JOB},${TRIGGER_VERSION},${TRIGGER_HOST}" >> ${DEPLOY_FILE}    
                   fi    
                '''                
          // the following catch give always an error in order to return a feedback UNSTABLE to the final user since the deploy is still not performed      
                catchError(buildResult: 'UNSTABLE', stageResult: 'UNSTABLE') {
                	sh("""
                		exit 126;
                	""")
                }	
            }
        }
        stage('Deploy from job ') {
            when{
                environment name: 'IS_SCHEDULED', value: 'False';
                expression {
                    env.TRIGGER_CD.toBoolean()
            	}
                anyOf{
                    triggeredBy 'BuildUpstreamCause'
                    triggeredBy 'UpstreamCause'
                }
            }
            steps {
                 echo "Cron build disabled. New deploy of ${params.TRIGGER_JOB} - ${params.TRIGGER_VERSION} ongoing"
                 ansiColor("xterm") {
                 	 catchError(buildResult: 'SUCCESS', stageResult: 'FAILURE') {
                         checkup("${params.TRIGGER_JOB}", "${params.TRIGGER_VERSION}", "${params.TRIGGER_HOST}");
                         deploy("${params.TRIGGER_JOB}", "${params.TRIGGER_VERSION}", "${params.TRIGGER_HOST}");
                     }
                 }

            }
        }
        stage('Deploy manually ') {
            when{
                allOf{
                    environment name: 'IS_SCHEDULED', value: 'False';
                    triggeredBy 'UserIdCause'
                }
            }
            steps {
                 echo "Cron build disabled. Pipeline executed Manually. New deploy of ${params.TRIGGER_JOB} - ${params.TRIGGER_VERSION} ongoing"
                 ansiColor("xterm") {
                     catchError(buildResult: 'FAILURE', stageResult: 'FAILURE') {
                         deploy("${params.TRIGGER_JOB}", "${params.TRIGGER_VERSION}", "${params.TRIGGER_HOST}");
                     }
                 }

            }
        }
    }
    post {
        always {
            script {
                sh '''
                  echo 'Sending report'
                  '''
                  //cat ./${ACTION_DEPLOY_FILE}.csv
            }
        }
        success {
            echo 'The deploy pipeline worked!'

            emailext attachLog: true,//attachmentsPattern: "**/${ACTION_DEPLOY_FILE}.csv",
                    to: 'roberto.cirillo@isti.cnr.it',
                    subject: "[Jenkins-gCubeDeployer] Deploy report",
                    body: "${currentBuild.fullDisplayName}. Build time: ${currentBuild.durationString}. See ${env.BUILD_URL}. "
        }
        failure {
            echo 'The deploy pipeline has failed'
            emailext attachLog: true,
                    to: 'roberto.cirillo@isti.cnr.it',
                    subject: "[Jenkins-gCubeDeployer] deploy ${currentBuild.fullDisplayName} failed",
                    body: "Something is wrong with ${env.BUILD_URL}"
        }

    }
}

//launch ansible deploy
def deploy(String service, String version, String host){
    def now = new Date();
    println("Going to deploy the service "+service+" with version: "+version+" on target: "+host);
    def statusCode = sh( script: "cd $CD_ROOT_FOLDER;./deployService.sh $service $version $host;", returnStdout: true);
    sh("""
        echo " last exit code \$?";
    """)
    println("Deploy ended with status: "+statusCode);
}

//Implement a new method in order to check the input parameters
def checkup(String service, String version, String host){
    sh("""
        case "$version" in
        **SNAPSHOT) echo "version contains SNAPSHOT" ;;
        **latest) echo "version contains latest" ;;
        *		  ) echo "version without SNAPSHOT. EXIT WITHOUT DEPLOY "; exit 1;;
        esac
    """)
}

//parse all csv files found in the local folder and deploy the components defined inside
def deployPendingJobs( def deployFolder){
	println ("searching files in folder ${deployFolder}");
	def files = findFiles(glob: "${deployFolder}/*.csv")
	if (files == null){
		println ("Nothing to do");
	}else{
		def serviceList = []
		for (def file : files){
		    def records = readCSV file: "${file.path}"
            for (def record : records) {
                println("Processing record: "+record)
                if(!serviceList.contains(record.get(0))){
                    stage(record.get(0)){
                        println "Deploy on going of component: ${record.get(0)}"
                        catchError(buildResult: 'UNSTABLE', stageResult: 'UNSTABLE') {
                            checkup(record.get(0), record.get(1), record.get(2));
                            deploy(record.get(0), record.get(1), record.get(2));
                        }
                    }
                    serviceList << record.get(0)
                }else{
                    echo "${record.get(0)} already deployed. Deployment skipped."
                }

            }    
            sh "rm ${file.path}"
        }
        sh "rm -Rf ${deployFolder}"
	}
}



//parse all csv files found in the local folder and deploy the components defined inside
def parsePendingJobs( def deployFolder){
	println ("searching files in folder ${deployFolder}");
	def files = findFiles(glob: "${deployFolder}/*.csv")
	if (files == null){
		println ("Nothing to do");
	}else{
		def serviceList = []
		for (def file : files){
		    def records = readCSV file: "${file.path}"
            for (def record : records) {
                println("Processing record: "+record)
                serviceList += "$record.get(0),$record.get(1),$record.get(2)";
				deployJobs(serviceList.unique())
            }    
            sh "rm ${file.path}"
        }
        sh "rm -Rf ${deployFolder}"
	}	
}
//Deploy jobs from an input list with the following elements: serviceName,serviceVersion,targetHost.
def deployJobs(def serviceList){
   for (def record : serviceList) {
        println("Processing record: "+record)
        service=record.split(",");
            stage(service.get(0)){
                println "Deploy on going of component: ${service.get(0)}"
                catchError(buildResult: 'UNSTABLE', stageResult: 'UNSTABLE') {
                    checkup(service.get(0), service.get(1), service.get(2));
                    deploy(service.get(0), service.get(1), service.get(2));
                }
            }
   }
    
}