import groovy.json.JsonSlurper
import groovy.io.FileType

//locate where this jenkinsfile is
String releaseURL = "https://code-repo.d4science.org/gCubeCI/gCubeRelease/raw/commit/4f3c9156b71d42b437605d8431d4dc81fedb31c8/releases/gcube-${params.gCube_release_number}.json.json"
//check and parse the release file
println "Querying ${releaseURL}"
def text = releaseURL.toURL().getText()
def gcubeJSON = new JsonSlurper().parse
println gcubeJSON

//check that the release number parameter is the one expected
assert gcubeJSON["gCube.version"] == params.gCube_release_number : "Release versions do not match!"


// 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_number}"

def components = gcubeJSON['Components']

def dynamicStages = [:]

//let's build the stages closures
components.each { entry -> echo "App name: $entry.key = Jobs: $entry.value" }
components.each { entry ->
    def app = entry.key
    dynamicStages["stage-${app}"] = ["${app}":{
           node {
               stage("Build ${app}") {
                   for (int j = 0; j < entry.value.size(); j++) {
                       build "${entry.value[j]}"
                   }
               }
           }
    }]
}

echo "Configured dynamic stages: ${dynamicStages.inspect()}"

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_number}"

   }

   // 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_number',
                defaultValue: 'invalid',
                description: 'The number of the gCube release to build. Ignored by the SNAPSHOT builds. 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"
                '''

            }
        }
        stage('Build Components') {
            stages {
                    stage('Build SmartGears components') {
                        steps {
                            script {
                                parallel dynamicStages['stage-SmartGears']
                            }
                        }
                    }
                    stage('Build enabling components') {
                        steps {
                            script {
                                parallel dynamicStages['stage-Enabling']
                            }
                        }
                    }

                    stage('Build data components') {
                        steps {
                            script {
                                parallel dynamicStages['stage-Data']
                            }
                        }
                    }
            }
        }
    }
   
}