#!/usr/bin/env groovy

/*  Copyright (c) 2019 AT&T Intellectual Property.                             #
#                                                                              #
#   Licensed under the Apache License, Version 2.0 (the "License");            #
#   you may not use this file except in compliance with the License.           #
#   You may obtain a copy of the License at                                    #
#                                                                              #
#       http://www.apache.org/licenses/LICENSE-2.0                             #
#                                                                              #
#   Unless required by applicable law or agreed to in writing, software        #
#   distributed under the License is distributed on an "AS IS" BASIS,          #
#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   #
#   See the License for the specific language governing permissions and        #
#   limitations under the License.                                             #
##############################################################################*/

properties([[$class: 'ParametersDefinitionProperty', parameterDefinitions: [
[$class: 'hudson.model.StringParameterDefinition', name: 'PHASE', defaultValue: "BUILD"],
[$class: 'hudson.model.StringParameterDefinition', name: 'ENV', defaultValue: "dev"],
[$class: 'hudson.model.StringParameterDefinition', name: 'MECHID', defaultValue: "username"],
[$class: 'hudson.model.StringParameterDefinition', name: 'KUBE_CONFIG', defaultValue: "kubeConfig-dev"],
[$class: 'hudson.model.StringParameterDefinition', name: 'OTF_MONGO_DB', defaultValue: "otf_mongo_dev_db"],
[$class: 'hudson.model.StringParameterDefinition', name: 'OTF_CAMUNDA_DB', defaultValue: "otf_camunda_dev_db"],
[$class: 'hudson.model.StringParameterDefinition', name: 'TILLER_NAMESPACE', defaultValue: ""]
]]])

echo "Build branch: ${env.BRANCH_NAME}"

node("docker"){
	stage 'Checkout'
	checkout scm
	PHASES=PHASE.tokenize( '_' );
	echo "PHASES : " + PHASES


	ARTIFACT_ID="otf-frontend";
	VERSION="Camille.1.0.3";
	//TODO: deal with namespace and docker registry
	NAMESPACE=""
	DOCKER_REGISTRY=""

	if( ENV.equalsIgnoreCase("dev") ){
		IMAGE_NAME=DOCKER_REGISTRY + "/" + NAMESPACE + "/" + ARTIFACT_ID +  ":" + VERSION
	}
	if( ENV.equalsIgnoreCase("prod") || ENV.equalsIgnoreCase("prod-dr")){
		IMAGE_NAME=DOCKER_REGISTRY + "/" + NAMESPACE + ".prod" + "/" + ARTIFACT_ID +  ":" + VERSION
	}
	if( ENV.equalsIgnoreCase("st") ){
		IMAGE_NAME=DOCKER_REGISTRY + "/" + NAMESPACE + ".st" + "/" + ARTIFACT_ID +  ":" + VERSION
	}
	echo "Artifact: " + IMAGE_NAME

	withEnv(["PATH=${env.PATH}:${env.WORKSPACE}/linux-amd64", "HELM_HOME=${env.WORKSPACE}"]) {

		echo "PATH=${env.PATH}"
		echo "HELM_HOME=${env.HELM_HOME}"

		withCredentials([usernamePassword(credentialsId: MECHID, usernameVariable: 'USERNAME', passwordVariable: 'PASSWORD')]) {

   			// sh """
   			// 	docker login $DOCKER_REGISTRY --username $USERNAME --password $PASSWORD
   			// """

			if (PHASES.contains("BUILD")){
				stage 'Publish Artifact'


					echo "Artifact: " + IMAGE_NAME

					sh """
						docker login $DOCKER_REGISTRY --username $USERNAME --password $PASSWORD
						docker build --no-cache -t $IMAGE_NAME .
						docker push $IMAGE_NAME
					"""


			}
		}

		if (PHASES.contains("DEPLOY") || PHASES.contains("UNDEPLOY")) {

			stage 'Init Helm'

			//check if helm exists if not install
			if(fileExists('linux-amd64/helm')){
				sh """
					echo "helm is already installed"
				"""
			}
			else{
			//download helm
				sh """
					echo "installing helm"
					wget  https://storage.googleapis.com/kubernetes-helm/helm-v2.8.2-linux-amd64.tar.gz
					tar -xf helm-v2.8.2-linux-amd64.tar.gz
					rm helm-v2.8.2-linux-amd64.tar.gz
				"""
			}

			withCredentials([file(credentialsId: KUBE_CONFIG,  variable: 'KUBECONFIG')]) {

				dir('helm'){
			    	//check if charts are valid, and then perform dry run, if successful then upgrade/install charts

  					if (PHASES.contains("UNDEPLOY") ) {
						stage 'Undeploy'

  						sh """
  							helm delete --tiller-namespace=$TILLER_NAMESPACE --purge $ARTIFACT_ID
  						"""
  					}

			    	//NOTE Double quotes are used below to access groovy variables like artifact_id and tiller_namespace
    	          	if (PHASES.contains("DEPLOY") ){
    	          		stage 'Deploy'
							withCredentials([
								usernamePassword(credentialsId: OTF_MONGO_DB, usernameVariable: 'USERNAME_MONGO', passwordVariable: 'PASSWORD_MONGO'),
								usernamePassword(credentialsId: 'FEATHERS_AUTH', usernameVariable: 'USER', passwordVariable: 'AUTHENTICATION_SECRET')
								]) {

								sh """
									echo "Validate Yaml"
									helm lint $ARTIFACT_ID

									echo "View Helm Templates"
									helm template $ARTIFACT_ID \
										--set appName=$ARTIFACT_ID \
										--set version=$VERSION \
										--set image=$IMAGE_NAME \
										--set namespace=$TILLER_NAMESPACE \
									  --set env=$ENV \
										--set AUTHENTICATION_SECRET=$AUTHENTICATION_SECRET \
										--set mongo.username=$USERNAME_MONGO \
										--set mongo.password=$PASSWORD_MONGO

									echo "Perform Dry Run Of Install"
									helm upgrade --tiller-namespace=$TILLER_NAMESPACE --install --dry-run $ARTIFACT_ID $ARTIFACT_ID \
										--set appName=$ARTIFACT_ID \
										--set version=$VERSION \
										--set image=$IMAGE_NAME \
										--set namespace=$TILLER_NAMESPACE \
									  --set env=$ENV \
										--set AUTHENTICATION_SECRET=$AUTHENTICATION_SECRET \
										--set mongo.username=$USERNAME_MONGO \
										--set mongo.password=$PASSWORD_MONGO

									echo "Helm Install/Upgrade"
					    			helm upgrade --tiller-namespace=$TILLER_NAMESPACE --install --timeout 1000 $ARTIFACT_ID $ARTIFACT_ID \
										--set appName=$ARTIFACT_ID \
										--set version=$VERSION \
										--set image=$IMAGE_NAME \
										--set namespace=$TILLER_NAMESPACE \
										--set env=$ENV \
										--set AUTHENTICATION_SECRET=$AUTHENTICATION_SECRET \
										--set mongo.username=$USERNAME_MONGO \
										--set mongo.password=$PASSWORD_MONGO

								"""
							}
    	          	}

				}
			}
      	}

	}
}