package main

import (
	"io/ioutil"
	"strings"
	"sync"
	"time"

	"github.com/bwmarrin/discordgo"
)

const guildID = "645550569573842945"

var levelMutex sync.Mutex
var levelQueue = make(map[string]bool)
var assignedLevels = make(map[string]int)
var rolesFromLevel []string

func init() {
	levels, _ := ioutil.ReadFile("levels.txt")
	rolesFromLevel = strings.Split(string(levels), "\n")
	for k, v := range rolesFromLevel {
		rolesFromLevel[k] = strings.TrimSpace(v)
	}
}

func addToLevelQueue(discordID string) {
	levelMutex.Lock()
	defer levelMutex.Unlock()
	levelQueue[discordID] = true
}

func listenToLevelUpdate(dg *discordgo.Session) {
	for {
		levelMutex.Lock()
		for k, v := range levelQueue {
			if !v {
				continue
			}
			levelQueue[k] = false
			level, _ := getLevelAndXP(dg, k)
			if assignedLevels[k] != level {
				assignedLevels[k] = level
				err := dg.GuildMemberRoleAdd(guildID, k, rolesFromLevel[level-1])
				if err != nil {
					logError(dg, "assignlevel", err)
				}
			}
		}
		levelMutex.Unlock()
		time.Sleep(5 * time.Second)
	}
}