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'

if (params.Type == 'SNAPSHOT-DRY-RUN') {
	echo "Configure Maven for SNAPSHOT-DRY-RUN artifacts"
	options = ''
	maven_local_repo_path = "${agent_root_folder}/local-snapshots"
	maven_settings_file = "${agent_root_folder}/.m2/jenkins-snapshots-dry-run-settings.xml"
}
if (params.Type == 'SNAPSHOT') {
	echo "Configure Maven for SNAPSHOT artifacts"
	options = ''
	maven_local_repo_path = "${agent_root_folder}/local-snapshots"
	maven_settings_file = "${agent_root_folder}/.m2/jenkins-snapshots-settings.xml"
}
if (params.Type == 'RELEASE-DRY-RUN') {
	echo "Configure Maven for RELEASE-DRY-RUN artifacts"
	options = ''
	maven_local_repo_path = "${agent_root_folder}/local-releases"
	maven_settings_file = "${agent_root_folder}/.m2/jenkins-releases-dry-run-settings.xml"
}
if (params.Type == 'RELEASE-STAGING') {
	echo "Configure Maven for RELEASE-STAGING artifacts"
	options = ''
	maven_local_repo_path = "${agent_root_folder}/local-staging"
	maven_settings_file = "${agent_root_folder}/.m2/jenkins-staging-settings.xml"
	echo "This will fail. RELEASES are currently disabled until further testing."
}
if (params.Type == 'RELEASE') {
	echo "Configure Maven for RELEASE artifacts"
	options = ''
	//maven_local_repo_path = "${agent_root_folder}/local-releases"
	//maven_settings_file = "${agent_root_folder}/.m2/jenkins-releases-settings.xml"
	echo "This will fail. RELEASES are currently disabled until further testing."
}
echo "Use settings file at ${maven_settings_file}"
echo "Use local repo at ${maven_local_repo_path}"
echo "Release number: ${params.gCube_release_version}"


//locate where this jenkinsfile is
String releaseURL = "https://code-repo.d4science.org/gCubeCI/gCubeRelease/raw/branch/master/releases/gcube-${gCube_release_version}.yaml"
//load the release file
println "Querying ${releaseURL}"
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 'pipeline-agent'
    }

    // see https://jenkins.io/doc/book/pipeline/syntax/#environment
    environment {
      JOB_OPTIONS = "${options}"
      MAVEN_LOCAL_REPO = "${maven_local_repo_path}"
      GCUBE_RELEASE_NUMBER = "${params.gCube_release_version}"
    }

    // see https://jenkins.io/doc/book/pipeline/syntax/#parameters
    parameters {
        choice(name: 'Type',
                choices: ['SNAPSHOT-DRY-RUN', 'SNAPSHOT', 'RELEASE-DRY-RUN', 'RELEASE-STAGING', '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.')
    }

    //see https://jenkins.io/doc/book/pipeline/syntax/#stages
    stages {
        stage('clean up before starting') {
            steps {
                sh '''
                echo "Create a fresh local repository"
                rm -rf $MAVEN_LOCAL_REPO
                mkdir -p $MAVEN_LOCAL_REPO
                echo "Done with local repository"
                '''

            }
        }
        // the maven-parent needs to be built (once) at each execution
        stage('build maven-parent') {
          steps {
                withMaven(jdk: "${maven_jdk}", mavenLocalRepo: "${maven_local_repo_path}", mavenSettingsFilePath: "${maven_settings_file}") {
                    build maven-parent
                }
                echo "Done with maven-parent"
          }
        }
        stage('build SmartGears components') {
          steps {
                withMaven(jdk: "${maven_jdk}", mavenLocalRepo: "${maven_local_repo_path}", mavenSettingsFilePath: "${maven_settings_file}") {
                    buildComponents items: jsonConfig.gCube_release.Components.SmartGears?.collect { "${it.name}" }
                }
                echo "Done with SmartGears components"
          }
        }
        stage('build Enabling components') {
           steps {
                withMaven(jdk: "${maven_jdk}", mavenLocalRepo: "${maven_local_repo_path}", mavenSettingsFilePath: "${maven_settings_file}") {
                    buildComponents items: jsonConfig.gCube_release.Components.Enabling?.collect { "${it.name}" }
                }
                echo "Done with Enabling components"
           }
        }
        stage('build Data components') {
           steps {
                withMaven(jdk: "${maven_jdk}", mavenLocalRepo: "${maven_local_repo_path}", mavenSettingsFilePath: "${maven_settings_file}") {
                    buildComponents items: jsonConfig.gCube_release.Components.Data?.collect { "${it?.name}" }
                }
                echo "Done with Data components"
           }
        }
      }
}

def buildComponents(args) {
    if (args.items) {
        parallel args.items?.collectEntries { name -> [ "${name}": {
            if (name && !"NONE".equalsIgnoreCase(name))
                build name
        }]}
    }
}