package chat

import (
	"fmt"
	"strings"

	twitch "github.com/gempir/go-twitch-irc/v4"
	"streambot/internal/commands"
)

const (
	MatchPrefix = "prefix"
	MatchMention = "mention"
	MatchContains = "contains"
)

func messageMatchesCommand(message, botUserName string, cmd commands.CustomCommand) bool {
	msgLower := strings.ToLower(message)
	triggerLower := strings.ToLower(cmd.Trigger)
	botMention := "@" + strings.ToLower(botUserName)

	switch cmd.Match {
		case MatchPrefix:
			return strings.HasPrefix(msgLower, triggerLower)
		case MatchMention:
			return strings.Contains(msgLower, botMention) && strings.Contains(msgLower, triggerLower)
		case MatchContains:
			return strings.Contains(msgLower, triggerLower)
		default:
			return false
	}
}

func userHasPermisson(user twitch.User, required commands.PermissionLevel) bool {
	isStreamer := use.Badges["broadcaster"] == 1
	isModerator := user.Badges["moderator"] == 1
	isVIP := user.Badges["vip"] == 1

	switch required {
		case commands.PermissionEveryone:
			return true
		case commands.PermissionVIP:
			return isStreamer || isModerator || is VIP
		case commands.PermissionModerator:
			return isStreamer || isModerator
		case commands.PermissionStreamer:
			return isStreamer
		default:
			return false
	}
}

func HandleMessage(client *twitch.Client, apiClient interface{}, message twitch.PrivateMessage, botUserName string) {
	user := message.User
	msg := message.Message
	channel := message.Channel

	// uptime title game handlers etc. . .

	for _, cmd := range commands.GetAllCommands() {
		if messageMatchesCommand(msg, botName, cmd) {
			if userHasPermission(user, cmd.Permission) {
				client.Say(channel, cmd.Reply)
			} else {
				client.Say(channel, fmt.Sprintf("@%s You don't have permission to use this command.", user.DisplayName))
			}
			break
		}
	}
}