package modules

import (
	"github.com/bwmarrin/discordgo"

	"TerraOceanBot/db"
	"TerraOceanBot/discord/config"
)

var minecraftConfirmReact = make(map[string]string)

var updateMinecraftUsername = memberFilter(true, enforceArgumentCount(
	config.SetMCUsernameUsage, 2,
	func(s *discordgo.Session, m *discordgo.MessageCreate, command []string) {
		oldUsername, err := db.GetMinecraftUsername(m.Author.ID)
		if err != nil {
			if err == db.ErrNotFound {
				processUsernameUpdate(s, m.Author.ID, m.ChannelID, command[1])
				return
			}
			auditError(s, m.ChannelID, err)
			return
		}
		if oldUsername == command[1] {
			initNewEmbed(config.SetMCUsernameErrorTitle, config.ErrorSetMCUsernameDuplicate, config.ErrorColour).
				Send(s, m.ChannelID)
			return
		}
		msg, err := initNewEmbed(
			config.SetMCUsernameConfirmTitle,
			config.SetMCUsernameConfirmDescription,
			config.SetMCUsernameConfirmColour,
		).AddField(config.SetMCUsernameConfirmOldUsername, oldUsername).
			AddField(config.SetMCUsernameConfirmNewUsername, command[1]).
			SendPM(s, m.Author.ID)
		if err != nil {
			auditError(s, m.ChannelID, err)
		}
		minecraftConfirmReact[msg.ID] = command[1]
		s.MessageReactionAdd(msg.ChannelID, msg.ID, emojiCheck)
		s.MessageReactionAdd(msg.ChannelID, msg.ID, emojiX)
	},
))

func ConfirmMinecraftUsername(s *discordgo.Session, r *discordgo.MessageReactionAdd) {
	if r.UserID == s.State.User.ID {
		return
	}

	newUsername, ok := minecraftConfirmReact[r.MessageID]
	if !ok {
		return
	}

	delete(minecraftConfirmReact, r.MessageID)

	switch r.Emoji.Name {
	case emojiCheck:
	case emojiX:
		initNewEmbed(config.SetMCUsernameConfirmDeniedTitle, config.SetMCUsernameConfirmDeniedDescription, config.SuccessColour).
			Send(s, r.ChannelID)
		return
	}

	processUsernameUpdate(s, r.UserID, r.ChannelID, newUsername)
}

func processUsernameUpdate(s *discordgo.Session, discordID, channelID, newUsername string) {
	err := db.SetMinecraftUsername(discordID, newUsername)
	if err == db.ErrAlreadyExists {
		initNewEmbed(
			config.SetMCUsernameErrorTitle,
			config.ErrorSetMCUsernameAlreadyOwned,
			config.ErrorColour,
		).Send(s, channelID)
		return
	}
	initNewEmbed(
		config.SetMCUsernameSuccessTitle,
		config.SetMCUsernameSuccessDescription,
		config.SuccessColour,
	).Send(s, channelID)
}