package modules

import (
	"github.com/bwmarrin/discordgo"

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

var changeTrust = enforceDM(memberFilter(true, enforceArgumentCount(
	config.ChangeTrustUsage, 2,
	func(s *discordgo.Session, m *discordgo.MessageCreate, command []string) {
		member, err := backend.GetMemberFromUserFriendlyName(s, command[1])
		if err == backend.ErrMemberNotFound {
			message.InitNewEmbed(
				config.ErrorChangeTrustTitle,
				config.ErrorChangeTrustTargetNotFound,
				config.ErrorColour,
			).Send(s, m.ChannelID)
			return
		}
		if err != nil {
			message.AuditError(s, m.ChannelID, err)
			return
		}

		embed := message.NewEmbed().
			SetTitle(config.ChangeTrustPromptTitle).
			SetColour(config.ChangeTrustPromptColour).
			AddField(config.ChangeTrustPromptID, member.User.Username+"#"+member.User.Discriminator)
		if member.Nick != "" {
			embed.AddField(config.ChangeTrustPromptNick, member.Nick)
		}
		embed.AddField(config.ChangeTrustPromptReminderTitle, config.ChangeTrustPromptReminderDescription)

		msg, err := embed.Send(s, m.ChannelID)

		if err != nil {
			message.AuditError(s, m.ChannelID, err)
			return
		}

		queueForReact(
			msg.ID,
			[]string{emojiOne, emojiTwo, emojiThree, emojiFour, emojiFive, emojiCheck},
			member.User.ID,
			trustCallback,
		)

		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 trustCallback(s *discordgo.Session, r *discordgo.MessageReactionAdd, info interface{}) {
	target := info.(string)

	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 {
		message.InitNewEmbed(
			config.ErrorChangeTrustTitle,
			config.ErrorChangeTrustRecentlyChanged,
			config.ErrorColour,
		).Send(s, r.ChannelID)
		return
	}
	if err != nil {
		message.AuditError(s, r.ChannelID, err)
		return
	}

	message.InitNewEmbed(
		config.ChangeTrustSuccessTitle,
		config.ChangeTrustSuccessDescription,
		config.SuccessColour,
	).Send(s, r.ChannelID)
}