package modules

import (
	"strings"

	"github.com/bwmarrin/discordgo"

	"TerraOceanBot/db"
	"TerraOceanBot/discord/backend"
	"TerraOceanBot/discord/message"
)

var trustMessage = make(map[string]string)

var changeTrust = enforceDM(memberFilter(true,
	func(s *discordgo.Session, m *discordgo.MessageCreate, command []string) {
		if len(command) < 2 {
			s.ChannelMessageSend(m.ChannelID, "指令的使用方法是`!trust <你要改信任度的人>`.\nUsage: `!trust <the user>`")
			return
		}

		member, err := backend.GetMemberFromUserFriendlyName(s, strings.SplitN(m.Content, " ", 2)[1])
		if err == backend.ErrMemberNotFound {
			s.ChannelMessageSend(m.ChannelID, "无法找到您所要求的玩家。\nCannot find the requested player.")
			return
		}
		if err != nil {
			message.AuditError(s, m.ChannelID, err)
			return
		}

		msg, err := s.ChannelMessageSendEmbed(
			m.ChannelID,
			createTrustEmbed(member.User.Username+"#"+member.User.Discriminator, member.Nick),
		)
		if err != nil {
			message.AuditError(s, m.ChannelID, err)
			return
		}

		trustMessage[msg.ID] = member.User.ID

		s.MessageReactionAdd(m.ChannelID, msg.ID, emojiOne)
		s.MessageReactionAdd(m.ChannelID, msg.ID, emojiTwo)
		s.MessageReactionAdd(m.ChannelID, msg.ID, emojiThree)
		s.MessageReactionAdd(m.ChannelID, msg.ID, emojiFour)
		s.MessageReactionAdd(m.ChannelID, msg.ID, emojiFive)
		s.MessageReactionAdd(m.ChannelID, msg.ID, emojiCheck)
	},
))

func createTrustEmbed(username, nick string) *discordgo.MessageEmbed {
	embed := message.NewEmbed().
		SetColour(0x00FFFF).
		SetTitle("更新玩家评分Update Player Score").
		AddField("ID", username)
	if nick != "" {
		embed.AddField("昵称Nickname", nick)
	}
	embed.AddField("提醒Reminder", "你一个月只能更换对一个玩家的评分一次。You can only change your trust towards a player once every month.")
	return embed.Build()
}

func CheckForTrustUpdate(s *discordgo.Session, r *discordgo.MessageReactionAdd) {
	if r.UserID == s.State.User.ID {
		return
	}
	target, ok := trustMessage[r.MessageID]

	if !ok {
		return
	}

	delete(trustMessage, r.MessageID)

	var value int
	switch r.Emoji.Name {
	case emojiOne:
		value = 1
	case emojiTwo:
		value = 2
	case emojiThree:
		value = 3
	case emojiFour:
		value = 4
	case emojiFive:
		value = 5
	case emojiCheck:
		value = db.NuclearOptionVote
	default:
		message.AuditInfo(s, "Reaction "+r.Emoji.Name+" was added to trust message ID "+r.MessageID)
		return
	}

	err := backend.UpdateTrust(r.UserID, target, value)
	if err == db.ErrRecentlyChanged {
		//TODO Move to embed.
		s.ChannelMessageSend(r.ChannelID, "你在一个月内有设定过该名玩家的分数。你这次的更动没有被记录。\nYou have changed your score for this player within the last month. Your change was not recorded.")
		return
	}
	if err != nil {
		message.AuditError(s, r.ChannelID, err)
		return
	}

	s.ChannelMessageSend(r.ChannelID, "已改变你给这名玩家的分数已被记录。\nThe score for this player has been updated.")
}