#!groovy​
import org.yaml.snakeyaml.Yaml

// set the build options according to the Type of build
def (options, maven_local_repo_path, maven_settings_file) = ['', '', '']
def maven_jdk = 'OpenJDK 8'
def agent_root_folder = '/var/lib/jenkins/.m2'

if (params.Type == 'SNAPSHOT-DRY-RUN') {
    echo "Configure Maven for SNAPSHOT-DRY-RUN artifacts"
    options = ''
    maven_local_repo_path = "local-snapshots"
    maven_settings_file = "jenkins-snapshots-dry-run-settings.xml"
}
if (params.Type == 'SNAPSHOT') {
    echo "Configure Maven for SNAPSHOT artifacts"
    options = ''
    maven_local_repo_path = "local-snapshots"
    maven_settings_file = "jenkins-snapshots-settings.xml"
}
if (params.Type == 'RELEASE-DRY-RUN') {
    echo "Configure Maven for RELEASE-DRY-RUN artifacts"
    options = ''
    maven_local_repo_path = "local-releases"
    maven_settings_file = "jenkins-releases-dry-run-settings.xml"
}
if (params.Type == 'STAGING') {
    echo "Configure Maven for STAGING artifacts"
    options = ''
    maven_local_repo_path = "local-staging"
    maven_settings_file = "jenkins-staging-settings.xml"
}
if (params.Type == 'RELEASE') {
    echo "Configure Maven for RELEASE artifacts"
    options = ''
    maven_local_repo_path = "local-releases"
    maven_settings_file = "jenkins-releases-settings.xml"
}

echo "Use settings file at ${maven_settings_file}"
echo "Use local repo at ${maven_local_repo_path}"
echo "Release number: ${params.gCube_release_version}"
echo "Clean up gcube local artifacts? ${params.cleanup_gcube_artifacts}"
echo "Clean up all local artifacts? ${params.cleanup_local_repo}"


//locate the release file
String releaseURL = "https://code-repo.d4science.org/gCubeCI/gCubeRelease/raw/branch/master/releases/gcube-${gCube_release_version}.yaml"

println "Querying ${releaseURL}"

//load the release file
def text = releaseURL.toURL().getText()

//parsing
def jsonConfig = new Yaml().load(text)
println jsonConfig.inspect()
assert jsonConfig.gCube_release.Version == params.gCube_release_version: "Release versions do not match!"
echo "Building gCube v. ${jsonConfig.gCube_release.Version}"
echo "Found components:"
jsonConfig.gCube_release.Components.each { println it.key }

pipeline {

    // see https://jenkins.io/doc/book/pipeline/syntax/#agent
    agent {
        label 'CD'
    }

    // see https://jenkins.io/doc/book/pipeline/syntax/#environment
    environment {
        JOB_OPTIONS = "${options}"
        //make the JVM start a bit faster with basic just-in-time compilation of the code only (-XX:*)
        //make maven running in a multi-thread fashion (16 threads, 2 threads on each Core)
        MAVEN_OPTS="-Dmaven.artifact.threads=16 -T 2C -XX:+TieredCompilation -XX:TieredStopAtLevel=1 "
        AGENT_ROOT_FOLDER = "${agent_root_folder}"
        MAVEN_SETTINGS_FILE = "${maven_settings_file}"
        MAVEN_LOCAL_REPO = "${agent_root_folder}/${maven_local_repo_path}"
        CLEANUP_GCUBE_REPO = "${params.cleanup_gcube_artifacts}"
        REMOVE_LOCAL_REPO = "${params.cleanup_local_repo}"
        GCUBE_RELEASE_NUMBER = "${params.gCube_release_version}"
        PIPELINE_BUILD_NUMBER = "${env.BUILD_NUMBER}"
    }

    // see https://jenkins.io/doc/book/pipeline/syntax/#parameters
    parameters {
        choice(name: 'Type',
                choices: ['SNAPSHOT-DRY-RUN', 'SNAPSHOT', 'STAGING', 'RELEASE-DRY-RUN', 'RELEASE'],
                description: 'The type of artifacts the build is expected to generate')

        string(name: 'gCube_release_version',
                defaultValue: 'x.y.z',
                description: 'The number of the gCube release to build. Sample values: 4.14, 4.15, etc.')

        booleanParam(name: 'cleanup_gcube_artifacts',
                        defaultValue: true,
                        description: 'Wipe out the gcube artifacts from the local maven repository before the builds?')

        booleanParam(name: 'cleanup_local_repo',
                        defaultValue: true,
                        description: 'Wipe out the local maven repository before the builds?')
    }

    //see https://jenkins.io/doc/book/pipeline/syntax/#stages
    stages {
        stage('clean up before starting') {
            steps {
                sh '''
                echo "REMOVE_LOCAL_REPO: ${REMOVE_LOCAL_REPO}"
                echo "CLEANUP_GCUBE_REPO: ${CLEANUP_GCUBE_REPO}"
                if [ "$CLEANUP_GCUBE_REPO" = "true" ]; then
                    echo "Remove gCube artifacts from local repository"
                    rm -rf $MAVEN_LOCAL_REPO/org/gcube
                fi
                if [ "$REMOVE_LOCAL_REPO" = "true" ]; then
                    echo "Create a fresh local repository"
                    rm -rf $MAVEN_LOCAL_REPO
                    mkdir -p $MAVEN_LOCAL_REPO
                fi
                mv "${AGENT_ROOT_FOLDER}/settings.xml" "${AGENT_ROOT_FOLDER}/settings.${PIPELINE_BUILD_NUMBER}"
                cp "${AGENT_ROOT_FOLDER}/${MAVEN_SETTINGS_FILE}" "${AGENT_ROOT_FOLDER}/settings.xml"
                echo "Done with local repository and settings"
                echo "#Build ${PIPELINE_BUILD_NUMBER}" > ${AGENT_ROOT_FOLDER}/build_commits.csv
                echo "#Release ${GCUBE_RELEASE_NUMBER}" >> ${AGENT_ROOT_FOLDER}/build_commits.csv
                date=`date`
                echo "#StartTime ${date}" >> ${AGENT_ROOT_FOLDER}/build_commits.csv
                echo -e "Component,Version,URL,Build Number" >> ${AGENT_ROOT_FOLDER}/build_commits.csv

                '''
            }
        }
        // the maven-parent needs to be built (once) at each execution
        stage('build maven-parent') {
            steps {
                echo build(job: 'maven-parent', wait: true,
                        parameters: [[$class: 'StringParameterValue', name: 'gcube_settings', value: "${maven_settings_file}"],
                                     [$class: 'StringParameterValue', name: 'local_repo', value: "${maven_local_repo_path}"],
                                     [$class: 'LabelParameterValue', name: 'exec_label', label: "CD", nodeEligibility: [$class: 'AllNodeEligibility']]
                        ]).result
                echo "Done with maven-parent"
            }
        }
        stage('build NoDeps components') {
            steps {
                buildComponents items: jsonConfig.gCube_release.Components.NoDeps?.collect { "${it.name}" },
                                "${maven_settings_file}", "${maven_local_repo_path}"
                echo "Done with NoDeps components"
            }
        }
        stage('build Core components') {
            steps {
                buildComponents items: jsonConfig.gCube_release.Components.Core?.collect { "${it.name}" },
                                "${maven_settings_file}", "${maven_local_repo_path}"
                echo "Done with Core components"
            }
        }
        stage('build CoreAuth components') {
            steps {
                buildComponents items: jsonConfig.gCube_release.Components.CoreAuth?.collect { "${it.name}" },
                                "${maven_settings_file}", "${maven_local_repo_path}"
                echo "Done with CoreAuth components"
            }
        }
        stage('build CoreSmartGears components') {
            steps {
                buildComponents items: jsonConfig.gCube_release.Components.CoreSmartGears?.collect { "${it.name}" },
                                "${maven_settings_file}", "${maven_local_repo_path}"
                echo "Done with CoreSmartGears components"
            }
        }
        stage('build Common components') {
            steps {
                buildComponents items: jsonConfig.gCube_release.Components.Common?.collect { "${it.name}" },
                                "${maven_settings_file}", "${maven_local_repo_path}"
                echo "Done with Common components"
            }
        }
        stage('build PortalCore components') {
            steps {
                buildComponents items: jsonConfig.gCube_release.Components.PortalCore?.collect { "${it.name}" },
                                "${maven_settings_file}", "${maven_local_repo_path}"
                echo "Done with Portal-Core components"
            }
        }

        stage('build Enabling components') {
            steps {
                buildComponents items: jsonConfig.gCube_release.Components.Enabling?.collect { "${it.name}" },
                                "${maven_settings_file}", "${maven_local_repo_path}"
                echo "Done with Enabling components"
            }
        }
        stage('build ClientLibraries components') {
            steps {
                buildComponents items: jsonConfig.gCube_release.Components.ClientLibraries?.collect { "${it?.name}" },
                                "${maven_settings_file}", "${maven_local_repo_path}"
                echo "Done with ClientLibraries components"
            }
        }
        stage('build Libraries components') {
            steps {
                buildComponents items: jsonConfig.gCube_release.Components.Libraries?.collect { "${it?.name}" },
                                "${maven_settings_file}", "${maven_local_repo_path}"
                echo "Done with Libraries components"
            }
        }
        stage('build Plugins components') {
            steps {
                buildComponents items: jsonConfig.gCube_release.Components.Plugins?.collect { "${it?.name}" },
                                "${maven_settings_file}", "${maven_local_repo_path}"
                echo "Done with Plugins components"
            }
        }
        stage('build Services components') {
            steps {
                buildComponents items: jsonConfig.gCube_release.Components.Services?.collect { "${it?.name}" },
                                "${maven_settings_file}", "${maven_local_repo_path}"
                echo "Done with Services components"
            }
        }
        stage('build Widgets components') {
            steps {
                buildComponents items: jsonConfig.gCube_release.Components.Widgets?.collect { "${it?.name}" },
                                "${maven_settings_file}", "${maven_local_repo_path}"
                echo "Done with Widgets components"
            }
        }
        stage('build Portlets components') {
            steps {
                buildComponents items: jsonConfig.gCube_release.Components.Portlets?.collect { "${it?.name}" },
                                "${maven_settings_file}", "${maven_local_repo_path}"
                echo "Done with Portlets components"
            }
        }
        stage('build Distribution components') {
            steps {
                buildComponents items: jsonConfig.gCube_release.Components.Distribution?.collect { "${it?.name}" },
                                "${maven_settings_file}", "${maven_local_repo_path}"
                echo "Done with Distribution components"
            }
        }

    }

    // post-build actions
	post {
        always {
             script {
                  sh '''
                  mv "${AGENT_ROOT_FOLDER}/settings.${PIPELINE_BUILD_NUMBER}" "${AGENT_ROOT_FOLDER}/settings.xml"
                  mv  ${AGENT_ROOT_FOLDER}/build_commits.csv  ${AGENT_ROOT_FOLDER}/build_commits.${PIPELINE_BUILD_NUMBER}.csv
                  cp ${AGENT_ROOT_FOLDER}/build_commits.${PIPELINE_BUILD_NUMBER}.csv .
                  cat *${PIPELINE_BUILD_NUMBER}.csv | echo
                  '''
             }
             echo 'The default maven settings have been restored'

        }
        success {
            echo 'The pipeline worked!'
            emailext attachmentsPattern: "**/*.${PIPELINE_BUILD_NUMBER}.csv",
                      to: 'jenkinsbuilds@d4science.org',
                      subject: "[Jenkins build D4S] build ${currentBuild.fullDisplayName} worked",
                      body: "Build time: ${currentBuild.durationString}. See ${env.BUILD_URL}"
        }
        failure {
            echo 'The pipeline has failed'
            emailext attachLog: true,
                      to: 'jenkinsbuilds@d4science.org',
                      subject: "[Jenkins build D4S] build ${currentBuild.fullDisplayName} failed",
                      body: "Something is wrong with ${env.BUILD_URL}"
        }

    }
}

def buildComponents(args, maven_settings_file, maven_local_repo_path) {
    if (args.items) {
        parallel args.items?.collectEntries { name ->
            ["${name}": {
                if (name && !"NONE".equalsIgnoreCase(name))
                    build(job: name,
                            parameters: [[$class: 'StringParameterValue', name: 'gcube_settings', value: "${maven_settings_file}"],
                                         [$class: 'StringParameterValue', name: 'local_repo', value: "${maven_local_repo_path}"],
                                         [$class: 'LabelParameterValue', name: 'exec_label', label: "CD", nodeEligibility: [$class: 'AllNodeEligibility']]
                            ])
                }
            ]

        }
    }
}