package main

import (
	"fmt"
	"github.com/bwmarrin/discordgo"
	"log"
	"strconv"
	"strings"
	"time"
)

var tempChannels []*discordgo.Channel

func parseVoiceChannelCommand(session *discordgo.Session, message *discordgo.MessageCreate) {
	userLimit, err := strconv.Atoi(strings.Split(message.Content, " ")[1])
	if err != nil {
		session.ChannelMessageSend(message.ChannelID, "Error: Expected a number after !vc")
		log.Printf("Incorrect syntax for !vc, “%s” triggered by %s", message.Content, userToString(message.Author))
		return
	}
	if userLimit > 99 {
		session.ChannelMessageSend(message.ChannelID, fmt.Sprintf("Als ob %d Leute *mit dir* in einen Channel wollen.", userLimit-1))
		log.Printf("%s tried to create a channel with %d slots", userToString(message.Author), userLimit)
		return
	}
	createData := discordgo.GuildChannelCreateData{
		Name:      fmt.Sprintf("%s’s Volatile Corner", message.Author.Username),
		Type:      discordgo.ChannelTypeGuildVoice,
		UserLimit: userLimit,
		ParentID:  "410162599762853909",
	}
	channel, err := session.GuildChannelCreateComplex(message.GuildID, createData)
	if err != nil {
		session.ChannelMessageSend(message.ChannelID, "Couldn’t create the voice channel. Please bug kageru about this.")
		log.Printf("Failed to create voice channel, %s", err)
		return
	}
	tempChannels = append(tempChannels, channel)
	err = session.GuildMemberMove(config.ServerID, message.Author.ID, channel.ID)
	if err != nil {
		log.Printf("Couldn’t move user %s: %s", userToString(message.Author), err)
	}
	session.ChannelMessageSend(message.ChannelID, "haaaai~")
	log.Printf("Created channel %s", channel.ID)
}

func checkAndDeleteUnusedChannels(session *discordgo.Session) {
	for true {
		time.Sleep(30 * time.Second)
		server, err := getServer()
		if err == nil {
			for i, channel := range tempChannels {
				if channelIsEmpty(channel.ID, server.VoiceStates) {
					session.ChannelDelete(channel.ID)
					tempChannels = remove(tempChannels, i)
					log.Printf("Deleted channel %s", channel.ID)
					log.Printf("Tempchannels: %d", len(tempChannels))
					break
				}
			}
		} else {
			log.Printf("Could not retrieve voice state from API, %s", err)
		}
	}
}

func channelIsEmpty(channelID string, voiceStates []*discordgo.VoiceState) bool {
	for _, state := range voiceStates {
		if channelID == state.ChannelID {
			return false
		}
	}
	return true
}