//
// cli_help.go
// Copyright (C) 2022 tiglog <me@tiglog.com>
//
// Distributed under terms of the MIT license.
//

package console

import (
	"errors"
	"fmt"
)

type cHelp struct {
	BaseCmd
	cli IConsole
}

func NewHelpCmd(cli IConsole) *cHelp {
	return &cHelp{
		BaseCmd{
			Name: "help",
			Desc: "查看命令的使用方法",
		},
		cli,
	}
}

func (c *cHelp) Init(args []string) {
	if len(args) == 0 {
		return
	}
	c.Action = func() error {
		cmds := c.cli.GetCmds()
		cmd, ok := cmds[args[0]]
		if !ok {
			return errors.New("指定的命令不存在")
		}
		fmt.Println(cmd.GetHelp())
		return nil
	}
}

func (c *cHelp) GetHelp() string {
	return c.Desc
}