#!groovy
import groovy.io.FileType
import static groovy.io.FileType.FILES
import jenkins.model.*
import hudson.FilePath;
import jenkins.model.Jenkins;

/**
 * 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'
//def agent_deploy_filename = 'deploy.${env.BUILD_NUMBER}.csv'
//def agent_deploy_backup_filename = 'deploy.${env.BUILD_NUMBER}.bck'

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

//locate the targetHost file
//String targetHostURL = "https://code-repo.d4science.org/gCubeCI/gCubeDeployer/raw/branch/master/open/gcube-${gCube_release_version}.yaml"
//if (verbose)
//   println "Querying ${targetHostURL}"
//load the release file
//def text = targetHostURL.toURL().getText()



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}"
    }

    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: '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{
                allOf{
                    triggeredBy 'TimerTrigger'
          // maybe we can add a new condition in order to consider the manual execution of this pipeline
                    environment name: 'IS_CRON_TMP', value: 'True'
                }
            }
            steps {
                echo 'Cron build enabled. Deploy from system ongoing'
                script {
                    println "Going to check the deploy file in ${PENDING_DEPLOY_FOLDER}"
 //                   def records = readCSV file: 'CD/deploy.csv'
// 					def files = findFiles(glob: 'target/surefire-reports/*.csv')
					def deployFolder="CD-${env.BUILD_NUMBER}";
					println ("searching files in folder ${deployFolder}");
					def files = findFiles(glob: "${deployFolder}/*.csv")
					if (files == null){
						println ("Nothing to do");
					}else{
						for (def file : files){
						    echo """
						    Found: ${file.name} with path ${file.path} 
						    length ${files[0].length} lastModified ${files[0].lastModified}
						    """
						    def records = readCSV file: "${file.path}"
	                        for (def record : records) {
	                            println("Processing record: "+record)
	                            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));
	                                }
	                            }
	                        }
	                        clean("${file.path}");    
	                    }  
	                    
					    
					}

                }
                
            }
        }
        stage('Nothing to do ') {
            when{
                anyOf{
                    allOf{
                        triggeredBy 'TimerTrigger'
                        environment name: 'IS_CRON_TMP', value: 'False'
                    }
                }

            }
            steps {
                 echo 'Do Nothing: cron build disabled'
            }
        }
        stage('New pending deploy ') {
            when{
                environment name: 'IS_CRON_TMP', 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_CRON_TMP', value: 'False';
                expression {
                    env.TRIGGER_CD.toBoolean()
            	}
                anyOf{
                    triggeredBy 'BuildUpstreamCause'
                    triggeredBy 'UpstreamCause'
                }
            }
            steps {
                 echo "Cron build disabled. New deploy of ${params.TRIGGER_JOB} - ${params.TRIGGER_VERSION} ongoing"
                 ansiColor("xterm") {
                     catchError(buildResult: 'FAILURE', stageResult: 'FAILURE') {
                         checkup("${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_CRON_TMP', value: 'False';
                    triggeredBy 'UserIdCause'
                }
            }
            steps {
                 echo "Cron build disabled. Pipeline executed Manually. New deploy of ${params.TRIGGER_JOB} - ${params.TRIGGER_VERSION} ongoing"
                 ansiColor("xterm") {
                     catchError(buildResult: 'FAILURE', stageResult: 'FAILURE') {
                         checkup("${params.TRIGGER_JOB}", "${params.TRIGGER_VERSION}", "${params.TRIGGER_HOST}");
                         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}"
        }

    }
}


//parse a csv file formatted in this way: ComponentName,ComponentVersion, ComponentHost
def getComponentsFromCSV(def deployList) {
    def components = []
    if (fileExists("${deployList}")) {
        echo 'file found'
        readFile("${deployList}").split('\n').each { line, count->
            if (line.startsWith('#'))
                return
            def fields = line.split(',')
            components.add([
                    name    : fields[0],
                    version : fields[1],
                    host 	: fields[2]                    
            ]
            )                
         }
    } else {
        echo ' File Not found. Failing.'
    }                         
    return components                     
}

//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
    """)
}
//clean and update the local deploy file
def cleanup(def DEPLOY_FILE, def BACKUP_FILE){
    sh '''
        echo "cleanup $DEPLOY_FILE";
        if [ -f ${DEPLOY_FILE} ]; then
            if [ -f ${BACKUP_FILE} ]; then
                echo "backup found: ${BACKUP_FILE} going to replace it";
                rm ${BACKUP_FILE};
            fi
            mv ${DEPLOY_FILE} ${BACKUP_FILE};
        else
            echo "deploy file empty"
        fi
    '''
}

//clean and update the local deploy file
def clean(def file){
    sh '''
        echo "cleaning $file";
        if [ -f $file ]; then
                rm $file;
        else
            echo "file not exist"
        fi
    '''
}


//experimental test
def getComponentsFromCSVDir4(def dirPath){
    sh '''
        echo "parsing $dirPath";
        for entry in `ls $dirPath`; do
           INPUT=$entry
           OLDIFS=$IFS
           IFS=','
           [ ! -f $INPUT ] && { echo "$INPUT file not found"; exit 99; }
           while read artifactid version host
           do
              echo "Component name : $artifactid"
              echo "Component version : $version"
              echo "Target host : $host"
           done < $INPUT
           IFS=$OLDIFS
        done
    '''
}