#!/bin/bash

# Copyright 2016 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.

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

global KUBE_ROOT := "$[dirname $(BASH_SOURCE)]/.."
source "$(KUBE_ROOT)/hack/lib/init.sh"

kube::golang::setup_env

make -C $(KUBE_ROOT) WHAT=cmd/kube-apiserver

global apiserver := $[kube::util::find-binary "kube-apiserver]

global SPECROOT := ""$(KUBE_ROOT)/api/openapi-spec""
global TMP_SPECROOT := ""$(KUBE_ROOT)/_tmp/openapi-spec""
global _tmp := ""$(KUBE_ROOT)/_tmp""

mkdir -p $(_tmp)
cp -a $(SPECROOT) $(TMP_SPECROOT)
trap "cp -a $(TMP_SPECROOT) $(SPECROOT)/..; rm -rf $(_tmp)" EXIT SIGINT
rm $(SPECROOT)/*
cp $(TMP_SPECROOT)/BUILD $(SPECROOT)/BUILD 
cp $(TMP_SPECROOT)/README.md $(SPECROOT)/README.md

"$(KUBE_ROOT)/hack/update-openapi-spec.sh"
echo "diffing $(SPECROOT) against freshly generated openapi spec"
global ret := '0'
diff -Naupr -I 'Auto generated by' $(SPECROOT) $(TMP_SPECROOT) || global ret := $Status
if [[ $ret -eq 0 ]]
{
  echo "$(SPECROOT) up to date."
} else {
  echo "$(SPECROOT) is out of date. Please run hack/update-openapi-spec.sh"
  exit 1
}

# ex: ts=2 sw=2 et filetype=sh
(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: [64 72]
              ) (/..)
            }
          spids: [63]
        )
      ]
      spids: [63]
    )
    (C {(source)} {(DQ (${ VSub_Name KUBE_ROOT) (/hack/lib/init.sh))})
    (C {(kube) (Lit_Other ":") (Lit_Other ":") (golang) (Lit_Other ":") (Lit_Other ":") (setup_env)})
    (C {(make)} {(-C)} {(DQ (${ VSub_Name KUBE_ROOT))} {(Lit_VarLike "WHAT=") (cmd/kube-apiserver)})
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:apiserver)
          op: Equal
          rhs: 
            {
              (CommandSubPart
                command_list: 
                  (CommandList
                    children: [
                      (C 
                        {(kube) (Lit_Other ":") (Lit_Other ":") (util) (Lit_Other ":") (Lit_Other ":") 
                          (find-binary)
                        } {(DQ (kube-apiserver))}
                      )
                    ]
                  )
                left_token: <Left_CommandSub "$(">
                spids: [109 121]
              )
            }
          spids: [108]
        )
      ]
      spids: [108]
    )
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:SPECROOT)
          op: Equal
          rhs: {(DQ (${ VSub_Name KUBE_ROOT) (/api/openapi-spec))}
          spids: [124]
        )
      ]
      spids: [124]
    )
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:TMP_SPECROOT)
          op: Equal
          rhs: {(DQ (${ VSub_Name KUBE_ROOT) (/_tmp/openapi-spec))}
          spids: [132]
        )
      ]
      spids: [132]
    )
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:_tmp)
          op: Equal
          rhs: {(DQ (${ VSub_Name KUBE_ROOT) (/_tmp))}
          spids: [140]
        )
      ]
      spids: [140]
    )
    (C {(mkdir)} {(-p)} {(DQ (${ VSub_Name _tmp))})
    (C {(cp)} {(-a)} {(DQ (${ VSub_Name SPECROOT))} {(DQ (${ VSub_Name TMP_SPECROOT))})
    (C {(trap)} 
      {
        (DQ ("cp -a ") (${ VSub_Name TMP_SPECROOT) (" ") (${ VSub_Name SPECROOT) ("/..; rm -rf ") 
          (${ VSub_Name _tmp)
        )
      } {(EXIT)} {(SIGINT)}
    )
    (C {(rm)} {(${ VSub_Name SPECROOT) (/) (Lit_Other "*")})
    (C {(cp)} {(${ VSub_Name TMP_SPECROOT) (/BUILD)} {(${ VSub_Name SPECROOT) (/BUILD)})
    (C {(cp)} {(${ VSub_Name TMP_SPECROOT) (/README.md)} {(${ VSub_Name SPECROOT) (/README.md)})
    (C {(DQ (${ VSub_Name KUBE_ROOT) (/hack/update-openapi-spec.sh))})
    (C {(echo)} {(DQ ("diffing ") (${ VSub_Name SPECROOT) (" against freshly generated openapi spec"))})
    (Assignment
      keyword: Assign_None
      pairs: [(assign_pair lhs:(LhsName name:ret) op:Equal rhs:{(0)} spids:[247])]
      spids: [247]
    )
    (AndOr
      children: [
        (C {(diff)} {(-Naupr)} {(-I)} {(SQ <"Auto generated by">)} {(DQ (${ VSub_Name SPECROOT))} 
          {(DQ (${ VSub_Name TMP_SPECROOT))}
        )
        (Assignment
          keyword: Assign_None
          pairs: [(assign_pair lhs:(LhsName name:ret) op:Equal rhs:{($ VSub_QMark "$?")} spids:[274])]
          spids: [274]
        )
      ]
      op_id: Op_DPipe
    )
    (If
      arms: [
        (if_arm
          cond: [
            (DBracket
              expr: (BoolBinary op_id:BoolBinary_eq left:{($ VSub_Name "$ret")} right:{(0)})
            )
          ]
          action: [(C {(echo)} {(DQ (${ VSub_Name SPECROOT) (" up to date."))})]
          spids: [-1 289]
        )
      ]
      else_action: [
        (C {(echo)} 
          {(DQ (${ VSub_Name SPECROOT) (" is out of date. Please run hack/update-openapi-spec.sh"))}
        )
        (C {(exit)} {(1)})
      ]
      spids: [301 318]
    )
  ]
)