/*
Copyright (c) 2017 VMware, Inc. All Rights Reserved.

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.
*/

package object

import (
	"context"
	"flag"

	"github.com/vmware/govmomi/govc/cli"
	"github.com/vmware/govmomi/govc/flags"
	"github.com/vmware/govmomi/object"
)

type method struct {
	*flags.DatacenterFlag

	name   string
	reason string
	source string
	enable bool
}

func init() {
	cli.Register("object.method", &method{})
}

func (cmd *method) Register(ctx context.Context, f *flag.FlagSet) {
	cmd.DatacenterFlag, ctx = flags.NewDatacenterFlag(ctx)
	cmd.DatacenterFlag.Register(ctx, f)

	f.StringVar(&cmd.name, "name", "", "Method name")
	f.StringVar(&cmd.reason, "reason", "", "Reason for disabling method")
	f.StringVar(&cmd.source, "source", "govc", "Source ID")
	f.BoolVar(&cmd.enable, "enable", true, "Enable method")
}

func (cmd *method) Usage() string {
	return "PATH..."
}

func (cmd *method) Description() string {
	return `Enable or disable methods for managed objects.

Examples:
  govc object.method -name Destroy_Task -enable=false /dc1/vm/foo
  govc object.collect /dc1/vm/foo disabledMethod | grep --color Destroy_Task
  govc object.method -name Destroy_Task -enable /dc1/vm/foo`
}

func (cmd *method) Process(ctx context.Context) error {
	if err := cmd.DatacenterFlag.Process(ctx); err != nil {
		return err
	}
	return nil
}

func (cmd *method) Run(ctx context.Context, f *flag.FlagSet) error {
	if f.NArg() == 0 {
		return flag.ErrHelp
	}

	if cmd.name == "" {
		return flag.ErrHelp
	}

	c, err := cmd.Client()
	if err != nil {
		return err
	}

	objs, err := cmd.ManagedObjects(ctx, f.Args())
	if err != nil {
		return err
	}

	m := object.NewAuthorizationManager(c)

	if cmd.enable {
		return m.EnableMethods(ctx, objs, []string{cmd.name}, cmd.source)
	}

	method := []object.DisabledMethodRequest{
		{
			Method: cmd.name,
			Reason: cmd.reason,
		},
	}

	return m.DisableMethods(ctx, objs, method, cmd.source)
}