#!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/.m2'
def agent_deploy_filename = 'deploy.csv'

def deployList
if (params.deployFile) {
    println "Using custom deploy file"
    deployList = params.deployFile
} else {
    println "Using local deploy file"
    //load the report from local
     deployList = agent_root_folder+'/'+agent_deploy_filename;
     println "Load from local file ${deployList}"
}
// parse the report and extract the data
def components = parseDeployComponent(deployList)
assert 0 < components.size(): "No component found"
for (component in components) {
    println "$component"
}

pipeline {
    agent {
        label 'CD'
    }
    triggers {
//     every fifteen minutes (perhaps at :07, :22, :37, :52)
       cron('H/15 * * * *')
//     once a day on the 1st and 15th of every month
//         cron ('H H 1,15 * *')
    }
         //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)/2 * * 1-5')

    environment {
        AGENT_ROOT_FOLDER = "${agent_root_folder}"
        DEPLOY_FILE = "${agent_root_folder}/${agent_deploy_filename}"
        TRIGGER_JOB= "${params.TRIGGER_JOB}"
        TRIGGER_VERSION= "${params.TRIGGER_VERSION}"
    }
    stages {
        stage('initialize environment') {
            steps {
                sh '''
                  date=`date`
                  touch $DEPLOY_FILE
                '''
            }
        }
        stage('Deploy from system') {
            when{
                allOf{
                    triggeredBy 'TimerTrigger'
          // maybe we can add a new condition in order to consider the manual execution of this pipeline
                    environment name: 'IS_CRON', value: 'True'
                }
            }
            steps {
                 echo 'Cron build enabled. Deploy from system ongoing'
                 echo 'Components to deploy:'
                 cat "${DEPLOY_FILE}"
                 script {
                     def length="wc -l ${DEPLOY_FILE}"
                     for (int i = 0; i < length ; ++i) {
                        echo "Component $i+1: " < "${DEPLOY_FILE}"
                     }
                 }
            }
        }
        stage('Nothing to do by System ') {
            when{
                allOf{
                    triggeredBy 'TimerTrigger'
                    environment name: 'IS_CRON', value: 'False'
                }
            }
            steps {
                 echo 'Do Nothing: cron build disabled'
            }
        }
        stage('Add new pending deploy ') {
            when{
                environment name: 'IS_CRON', value: 'True'
                anyOf{
                    triggeredBy 'BuildUpstreamCause'
                    triggeredBy 'UpstreamCause'
                }
            }
            steps {
                sh '''
                   echo "Cron build enabled. New deploy of ${TRIGGER_JOB} - ${TRIGGER_VERSION} appended to the deploy file"
                   echo "${TRIGGER_JOB} , ${TRIGGER_VERSION}" >> ${DEPLOY_FILE}
                '''
            }
        }
        stage('Deploy from job ') {
            when{
                environment name: 'IS_CRON', value: 'False'
                anyOf{
                    triggeredBy 'BuildUpstreamCause'
                    triggeredBy 'UpstreamCause'
                }
            }
            steps {
                 echo "Cron build disabled. New deploy of ${params.TRIGGER_JOB} - ${params.TRIGGER_VERSION} ongoing"
            }
        }
    }
    post {
        always {
            script {
                sh '''
                  echo ' jobs currently appended:'
                  '''
                  //cat ./${ACTION_DEPLOY_FILE}.csv
            }
        }
        success {
            echo 'The deploy pipeline worked!'

            emailext attachLog: true,//attachmentsPattern: "**/${ACTION_DEPLOY_FILE}.csv",
                    to: 'roberto.cirillo@isti.cnr.it',
                    subject: "Deploy report",
                    body: "${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 deploy D4S] deploy ${currentBuild.fullDisplayName} failed",
                    body: "Something is wrong with ${env.BUILD_URL}"
        }

    }
}

//a non CPS method is necessary for the usage of splitEachLine()
@NonCPS
def parseDeployComponent(def deployList) {
    def components = []
    "${deployList}".splitEachLine(',') { columns ->
        if (columns[0].startsWith('#') || columns[0].startsWith('Components'))
            return
        components.add([
                name    : columns[1],
                version : columns[2],
        ]
        )
    }
    return components
}