#!/bin/bash

# Copyright 2014 The Kubernetes Authors.
#
# 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.

# Tear down a Kubernetes cluster.

set -o errexit
set -o nounset
set -o pipefail

global KUBE_ROOT := "$[dirname $(BASH_SOURCE)]/.."

if test -f "$(KUBE_ROOT)/cluster/env.sh" {
    source "$(KUBE_ROOT)/cluster/env.sh"
}

source "$(KUBE_ROOT)/cluster/kube-util.sh"

echo "Bringing down cluster using provider: $KUBERNETES_PROVIDER"

verify-prereqs
verify-kube-binaries
kube-down

echo "Done"
(CommandList
  children: [
    (C {(set)} {(-o)} {(errexit)})
    (C {(set)} {(-o)} {(nounset)})
    (C {(set)} {(-o)} {(pipefail)})
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:KUBE_ROOT)
          op: Equal
          rhs: 
            {
              (CommandSubPart
                command_list: 
                  (CommandList
                    children: [(C {(dirname)} {(DQ (${ VSub_Name BASH_SOURCE))})]
                  )
                left_token: <Left_CommandSub "$(">
                spids: [68 76]
              ) (/..)
            }
          spids: [67]
        )
      ]
      spids: [67]
    )
    (If
      arms: [
        (if_arm
          cond: [
            (Sentence
              child: 
                (C {(Lit_Other "[")} {(-f)} {(DQ (${ VSub_Name KUBE_ROOT) (/cluster/env.sh))} 
                  {(Lit_Other "]")}
                )
              terminator: <Op_Semi ";">
            )
          ]
          action: [(C {(source)} {(DQ (${ VSub_Name KUBE_ROOT) (/cluster/env.sh))})]
          spids: [-1 96]
        )
      ]
      spids: [-1 108]
    )
    (C {(source)} {(DQ (${ VSub_Name KUBE_ROOT) (/cluster/kube-util.sh))})
    (C {(echo)} {(DQ ("Bringing down cluster using provider: ") ($ VSub_Name "$KUBERNETES_PROVIDER"))})
    (C {(verify-prereqs)})
    (C {(verify-kube-binaries)})
    (C {(kube-down)})
    (C {(echo)} {(DQ (Done))})
  ]
)