package main

import "github.com/bwmarrin/discordgo"

func createInvite(s *discordgo.Session, m *discordgo.MessageCreate, command []string) {
	if !enforceDM(s, m) {
		return
	}
	if !membersOnly(s, m) {
		return
	}
	if len(command) < 2 {
		s.ChannelMessageSend(m.ChannelID, "指令的使用方法是`!invite <你所要设置的验证码>`.\nUsage: `!invite <validation code>`")
		return
	}
	if len(command) > 2 {
		s.ChannelMessageSend(m.ChannelID, "所提供的验证码不得有任何空格。\nThe provided validation code cannot contain any spaces.")
		return
	}

	err := setInviteOwner(command[1], m.Author.ID)
	switch err {
	case errAlreadyExists:
		owner, _ := getInviteOwner(command[1])
		if owner == m.Author.ID {
			s.ChannelMessageSend(
				m.ChannelID,
				"这个验证码归你所有，它仍然未被使用。请把它告诉你要邀请的人。\nThis validation code belongs to you. Please give it to the person you want to invite.",
			)
			return
		}
		s.ChannelMessageSend(
			m.ChannelID,
			"这个验证码已被其他会员注册。请使用别的验证码。\nThis validation code is already registered. Please try another one.",
		)
	case errInviteUsed:
		s.ChannelMessageSend(
			m.ChannelID,
			"这个验证码已被使用。请使用别的验证码。\nThis validation code has already been used. Please try another one.",
		)
	case nil:
		s.ChannelMessageSend(
			m.ChannelID,
			"这个验证码现在属于你了。请好好保管并把它交给你要邀请的人。\nThis validation code now belongs to you! Pass it on to the person you want to invite.",
		)
	default:
		s.ChannelMessageSend(
			m.ChannelID,
			"不明错误已发生，请把这个错误信息发在群里。\nAn unknown error has occurred. Please pass this error message on.\n"+err.Error(),
		)
	}
}