/*
Copyright 2016 The Doctl Authors 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 commands

import (
	"fmt"
	"strconv"

	"github.com/bryanl/doit"
	"github.com/bryanl/doit/do"
	"github.com/spf13/cobra"
)

// FloatingIPAction creates the floating IP action commmand.
func FloatingIPAction() *Command {
	cmd := &Command{
		Command: &cobra.Command{
			Use:     "floating-ip-action",
			Short:   "floating IP action commands",
			Long:    "floating IP action commands",
			Aliases: []string{"fipa"},
		},
	}

	CmdBuilder(cmd, RunFloatingIPActionsGet,
		"get <floating-ip> <action-id>", "get floating-ip action", Writer,
		displayerType(&action{}), docCategories("floatingip"))

	CmdBuilder(cmd, RunFloatingIPActionsAssign,
		"assign <floating-ip> <droplet-id>", "assign a floating IP to a droplet", Writer,
		displayerType(&action{}), docCategories("floatingip"))

	CmdBuilder(cmd, RunFloatingIPActionsUnassign,
		"unassign <floating-ip>", "unassign a floating IP to a droplet", Writer,
		displayerType(&action{}), docCategories("floatingip"))

	return cmd
}

// RunFloatingIPActionsGet retrieves an action for a floating IP.
func RunFloatingIPActionsGet(c *CmdConfig) error {
	if len(c.Args) != 2 {
		return doit.NewMissingArgsErr(c.NS)
	}

	ip := c.Args[0]

	fia := c.FloatingIPActions()

	actionID, err := strconv.Atoi(c.Args[1])
	if err != nil {
		return err
	}

	a, err := fia.Get(ip, actionID)
	if err != nil {
		return err
	}

	item := &action{actions: do.Actions{*a}}
	return c.Display(item)
}

// RunFloatingIPActionsAssign assigns a floating IP to a droplet.
func RunFloatingIPActionsAssign(c *CmdConfig) error {
	if len(c.Args) != 2 {
		return doit.NewMissingArgsErr(c.NS)
	}

	ip := c.Args[0]

	fia := c.FloatingIPActions()

	dropletID, err := strconv.Atoi(c.Args[1])
	if err != nil {
		return err
	}

	a, err := fia.Assign(ip, dropletID)
	if err != nil {
		checkErr(fmt.Errorf("could not assign IP to droplet: %v", err))
	}

	item := &action{actions: do.Actions{*a}}
	return c.Display(item)
}

// RunFloatingIPActionsUnassign unassigns a floating IP to a droplet.
func RunFloatingIPActionsUnassign(c *CmdConfig) error {
	if len(c.Args) != 1 {
		return doit.NewMissingArgsErr(c.NS)
	}

	ip := c.Args[0]

	fia := c.FloatingIPActions()

	a, err := fia.Unassign(ip)
	if err != nil {
		checkErr(fmt.Errorf("could not unassign IP to droplet: %v", err))
	}

	item := &action{actions: do.Actions{*a}}
	return c.Display(item)
}
