const Discord = require("discord.js");
const client = new Discord.Client();
const config = require("./config.json");


client.login(config.token);

client.on("ready", () => {
    console.log("Booted");
});

// remove empty channels
client.on("voiceStateUpdate", (voiceupdate) => {
    const guild = voiceupdate.guild;
    var categoryChannels = guild.channels.get(config.lobbyId).parent.children.array();
    var emptyChannels = categoryChannels.filter(channel => channel.members.size === 0);

    for (i = 0; i < emptyChannels.length; i++) {
        if (emptyChannels[i].id !== config.lobbyId) {
            emptyChannels[i].delete("removing empty channels");
        }
    }
});

// commands
client.on("message", (message) => {
    if (!message.content.startsWith(config.prefix) || message.author.bot) return;

    const args = message.content.slice(config.prefix.length).trim().split(/ +/g);
    const command = args.shift().toLowerCase();

    if (message.guild != null) {
        const guild = message.guild;
        const lobbyVc = guild.channels.get(config.lobbyId);

        if (message.channel.id === config.commandChatId) {
            // create a vc
            if (command === "createvc") {
                if (message.member.voiceChannelID === lobbyVc.id) { // checks if the user is in the lobby
                    if (args[0] === "public") {
                        guild.createChannel(message.author.username, "voice").then(createdChannel => {
                            createdChannel.edit({
                                parent: config.parentId
                            });
                            message.member.setVoiceChannel(createdChannel);
                        });
                    }
                    else
                    if (args[0] === "private") {
                        guild.createChannel(message.author.username, "voice", [{id: guild.id, deny: ["CONNECT"]}])
                        .then(createdChannel => {
                            createdChannel.edit({
                                parent: config.parentId
                            })
                            // .then(createdChannel.overwritePermissions(message.member.user.id,{'CONNECT':true}))
                            .then(createdChannel => {
                                message.member.setVoiceChannel(createdChannel);
                            });
                        });
                    }
                    else {
                        message.channel.send("Please specify if the channel is public or private.");
                    }
                }
                else {
                    message.channel.send("Please join " + lobbyVc.name + " to create a channel.");
                }
            }
            else // rename a vc
            if (command === "renamevc") {
                if (message.member.voiceChannel.parent.id === config.parentId && message.member.voiceChannelID !== lobbyVc.id) { //checks if user is allowed to rename vc
                    console.log("<" + message.member.id + "> renamed <" + message.member.voiceChannel.name + "> into <" + message.content.slice(config.prefix.length + 9) + ">");
                    message.member.voiceChannel.setName(message.content.slice(config.prefix.length + 9));
                }
                else {
                    message.channel.send("You don't have the permission to rename this vc.");
                }
            }
            else // allow an user
            if (command === "allowuser") {
                if (message.member.voiceChannel.parent.id === config.parentId && message.member.voiceChannelID !== lobbyVc.id) { //checks if user is in a modifyable voice channel
                    if (guild.members.has(args[0])) {
                        guild.channels.get(message.member.voiceChannelID).overwritePermissions(args[0],{"CONNECT":true});
                    }
                    else
                    if (message.mentions.members.first() != undefined) {
                        guild.channels.get(message.member.voiceChannelID).overwritePermissions(message.mentions.members.first().id,{"CONNECT":true});
                    }
                    else {
                        message.channel.send("Please attach an user-id or mention to the command.");
                    }
                }
                else {
                    message.channel.send("You are not allowed to allow users in this voice channel.");
                }
            }
            else // deny user
            if (command === "denyuser") {
                if (message.member.voiceChannel.parent.id === config.parentId && message.member.voiceChannelID !== lobbyVc.id) { //checks if user is in a modifyable voice channel
                    if (guild.members.has(args[0])) {
                        guild.channels.get(message.member.voiceChannelID).overwritePermissions(args[0],{"CONNECT":true});
                    }
                    else
                    if (message.mentions.members.first() != undefined) {
                        guild.channels.get(message.member.voiceChannelID).overwritePermissions(message.mentions.members.first().id,{"CONNECT":true});
                    }
                    else {
                        message.channel.send("Please attach an user-id or mention to the command.");
                    }
                }
                else {
                    message.channel.send("You are not allowed to deny users in this voice channel.");
                }
            }
        }
    }
});