#!/usr/bin/env groovy
// -----------------------------------------------------------------------
// Copyright 2021-2023 Open Networking Foundation (ONF) and the ONF Contributors
//
// 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.
// -----------------------------------------------------------------------
// usage
//
// stage('test stage') {
//   steps {
//     volthaDeploy([
//       onosReplica: 3
//     ])
//   }
// }
// -----------------------------------------------------------------------

// -----------------------------------------------------------------------
// -----------------------------------------------------------------------
def getIam(String func)
{
    // Cannot rely on a stack trace due to jenkins manipulation
    String src = 'vars/volthaInfraDeploy.groovy'
    String iam = [src, func].join('::')
    return iam
}


// -----------------------------------------------------------------------
// Intent: Log progress message
// -----------------------------------------------------------------------
void enter(String name) {
    // Announce ourselves for log usability
    String iam = getIam(name)
    println("${iam}: ENTER")
    return
}

// -----------------------------------------------------------------------
// Intent: Log progress message
// -----------------------------------------------------------------------
void leave(String name) {
    // Announce ourselves for log usability
    String iam = getIam(name)
    println("${iam}: LEAVE")
    return
}

// -----------------------------------------------------------------------
// Intent: Display and interact with kubernetes namespaces.
// -----------------------------------------------------------------------
def doKubeNamespaces()
{
    enter('doKubeNamespaces')

    /*
     [joey] - should pre-existing hint the env is tainted (?)
     05:24:57  + kubectl create namespace infra
     05:24:57  Error from server (AlreadyExists): namespaces "infra" already exists
     05:24:57  error: failed to create configmap: configmaps "kube-config" already exists

     [joey] Thinking we should:
     o A special case exists  (create namespace)
     o helm upgrade --install (inital update)
     */

    sh('kubectl get namespaces || true')

    leave('doKubeNamespaces')
    return
}

// -----------------------------------------------------------------------
// -----------------------------------------------------------------------
def process(Map config)
{
    enter('process')

    // NOTE use params or directule extraHelmFlags??
    def defaultConfig = [
        onosReplica: 1,
        atomixReplica: 1,
        kafkaReplica: 1,
        etcdReplica: 1,
        infraNamespace: "infra",
        workflow: "att",
        withMacLearning: false,
        withFttb: false,
        extraHelmFlags: "",
        localCharts: false,
        kubeconfig: null, // location of the kubernetes config file, if null we assume it's stored in the $KUBECONFIG environment variable
    ]

    def cfg = defaultConfig + config

    def volthaInfraChart = "onf/voltha-infra"

    if (cfg.localCharts) {
        volthaInfraChart = "$WORKSPACE/voltha-helm-charts/voltha-infra"

        sh(label  : 'HELM: Update deps',
           script : """
pushd $WORKSPACE/voltha-helm-charts/voltha-infra
helm dep update
popd
""")
    }

    println "Deploying VOLTHA Infra with the following parameters: ${cfg}."

    def kubeconfig = cfg.kubeconfig
    if (kubeconfig == null) {
        kubeconfig = env.KUBECONFIG
    }

    doKubeNamespaces() // WIP: joey

    sh(label  : 'KUBE: Create namespace',
       script : """
kubectl create namespace ${cfg.infraNamespace} || true
kubectl create configmap -n ${cfg.infraNamespace} kube-config "--from-file=kube_config=${kubeconfig}"  || true
""")

    def serviceConfigFile = cfg.workflow
    if (cfg.withMacLearning && cfg.workflow == 'tt') {
        serviceConfigFile = "tt-maclearner"
    } else if (cfg.withFttb && cfg.workflow == 'dt') {
        serviceConfigFile = "dt-fttb"
    }

    // bitnamic/etch has change the replica format between the currently used 5.4.2 and the latest 6.2.5
    // for now put both values in the extra helm chart flags
    sh(label  : 'HELM: upgrade --install',
       script : """
    helm upgrade --install --create-namespace -n ${cfg.infraNamespace} voltha-infra ${volthaInfraChart} \
          --set onos-classic.replicas=${cfg.onosReplica},onos-classic.atomix.replicas=${cfg.atomixReplica} \
          --set kafka.replicaCount=${cfg.kafkaReplica},kafka.zookeeper.replicaCount=${cfg.kafkaReplica} \
          --set etcd.statefulset.replicaCount=${cfg.etcdReplica} \
          --set etcd.replicaCount=${cfg.etcdReplica} \
          -f $WORKSPACE/voltha-helm-charts/examples/${serviceConfigFile}-values.yaml ${cfg.extraHelmFlags}
""")

    leave('process')
    return
}

// -----------------------------------------------------------------------
// -----------------------------------------------------------------------
def call(Map config)
{
    enter('main')

    if (!config) {
        config = [:]
    }

    try
    {
	    process(config)
    }
    catch (Exception err)
    {
        String iam = getIam(name)
	    println("** ${iam}: EXCEPTION ${err}")
	    throw err
    }
    finally
    {
	    leave('main')
    }

    return
}

// [EOF]