const Discord = require('discord.js');
const bot = new Discord.Client();
var fs = require('fs');
var servers = fs.readFileSync('servers.json');
var config = JSON.parse(servers);

Array.prototype.contains = function(obj) {
    var i = this.length;
    while (i--) {
        if (this[i] === obj) {
            return true;
        }
    }
    return false;
}

function dateNow(){
    var d = new Date();
    var y = d.getFullYear();
    var m = d.getMonth() + 1;
    var dt = d.getDate();
    var hr = d.getHours() + 1;
    var mnts = d.getMinutes() + 1;
    if (m < 10) { m = '0'+m.toString(); }
    if (dt < 10) { dt = '0'+dt.toString(); }
    if (hr < 10) { hr = '0'+hr.toString(); }
    if (mnts < 10) { mnts = '0'+mnts.toString(); }
    y = y.toString();
    m = m.toString();
    dt = dt.toString();
    hr = hr.toString();
    mnts = mnts.toString();
    return y + '-' + m + '-' + dt + '__' + hr + ':' + mnts;
}

function saveConfig(cfg){
    var data = JSON.stringify(cfg, null, 2);
    fs.writeFileSync('servers.json', data);
    servers = fs.readFileSync('servers.json');
    config = JSON.parse(servers);
    console.log(config);
}

function rand(int){
    return Math.floor(Math.random() * parseInt(int));
}

bot.on('ready', () => {
    console.log('Vulpix online');
    bot.user.setGame("Type v-config");
});

bot.on('guildCreate', guild =>{
    console.log('Vulpix joined "' + guild.name + '" server with ID "' + guild.id.toString() + '" at date: ' + Date.now() + '.');
    guild.defaultChannel.sendMessage('Hello! I am Vulpix. I am here to help you out with utility commands, shortcuts, and more. Contact user `M3rein#7122` for questions and inquiries!');
    var g = guild.id.toString(); // Default Config settings.
    config[g] = {};
    config[g]["prefix"] = "!";
    config[g]["ignored_channels"] = [];
    config[g]["disabled_commands"] = [];
    config[g]["messages"] = {};
    config[g]["messages"]["welcome"]["msg"] = "Welcome to the server, (user)!";
    config[g]["messages"]["welcome"]["status"] = "on";
    config[g]["messages"]["mute"]["msg"] = "(user) has been muted!"
    config[g]["messages"]["mute"]["status"] = "on"
    saveConfig(config);
})

bot.on('guildMemberAdd', member =>{
    if (config[member.guild.id.toString()]["messages"]["welcome"]["status"] == "on"){
        var msg = config[member.guild.id.toString()]["messages"]["welcome"]["msg"];
        msg = mes.replace('(user)', member.user.username);
        member.guild.defaultChannel.sendMessage(msg);
    }
});

bot.on('message', message => {
    var thisconfig = config[message.guild.id.toString()];
    if (!thisconfig["ignored_channels"].contains(message.channel.name)){
        if (message.content.startsWith(thisconfig["prefix"])){
            cmd = message.content.split(thisconfig["prefix"])[1].split(' ')[0];
            args = message.content.split(" ");
            args.splice(0, 1);
            console.log(dateNow() + ' ' + message.author.username + `: ` + message.content);
            if (cmd == "choose"){
                _args = message.content.split(' ');
                var str = "";
                for (i = 1; i < _args.length; i++){
                    str += _args[i];
                    if (i != _args.length - 1) { str += " "; }
                }
                options = str.split('|');
                message.channel.sendMessage(options[rand(options.length)]);
            }
            else if (cmd == "show_database"){
                var dat = fs.readFileSync('servers.json');
                var cfg = JSON.parse(dat, null, 2);
                console.log(cfg);
            }
        }
        else if (message.content.startsWith("v-config")){ // Configuration of the bot for the server.
            args = message.content.split(" ");
            args.splice(0, 1);
            var param = args[0];
            var setting = args[1];
            console.log(dateNow() + ' ' + message.author.username + `: ` + message.content);
            if (param == "prefix"){
                if (setting != undefined){
                    config[message.guild.id.toString()]["prefix"] = setting;
                    saveConfig(config);
                    message.channel.sendMessage('Successfully set active command prefix to `'+config[message.guild.id.toString()]["prefix"]+'`.');
                }
                else{
                    message.channel.sendMessage('The prefix for commands is currently `'+thisconfig["prefix"]+'`.');
                }
            }
            else if (param == "messages"){
                var arg = args[1];
                if (arg == "welcome"){
                    message.channel.sendMessage('The message that is sent whenever a new user joins.```Message: '+thisconfig["messages"]["welcome"]["msg"]+'\nStatus: '+thisconfig["messages"]["welcome"]["status"]+'```');
                }
                else if (arg == "mute"){
                    message.channel.sendMessage('When you mute someone via the bot, this is the message that will be displayed. ```Mute message: '+thisconfig["messages"]["mute"]["msg"]+'\r\nStatus: '+thisconfig["messages"]["mute"]["status"]+'```');
                }
                else{
                    message.channel.sendMessage('These are messages the bot will send under specific circumstances. You can turn them on/off and change the message. Use one of the following commands for more information:```v-config messages welcome\nv-config messages mute```');
                }
            }
            else if (param == "autorole"){
                message.channel.sendMessage('When a new user joins, you can choose for the bot to give them a role.```Role given: '+thisconfig["autorole"]+'\r\nStatus: '+thisconfig["autorole"]+'```Use one of the following commands to change the settings:```v-config autorole on\nv-config autorole off\nv-config autorole set (rolename)```');
            }
            else if (param == "ignored_channels"){
                var msg = 'If a command other than v-config is executed in any of the following channels, it will be ignored:```\n';
                if (thisconfig["ignored_channels"].length == 0) { msg += "---"; }
                else{
                    for (i = 0; i < thisconfig["ignored_channels"].length; i++){
                        msg += thisconfig["ignored_channels"][i];
                        if (i != thisconfig["ignored_channels"].length - 1) { msg += '\n'; }
                    }
                }
                msg += '``` Add or remove a channel with one of the following commands:```v-config ignored_channels add (channelname)\nv-config ignored_channels remove (channelname)```Channelname is the actual name of the channel, not a hyperlink or id.';
                message.channel.sendMessage(msg);
            }
            else if (param == "show"){
                message.channel.sendMessage('```JavaScript\n'+JSON.stringify(thisconfig, null, 2)+'```');
            }
            else{
                message.channel.sendMessage('To configure the bot for this server, use one of the following commands: ```v-config prefix\nv-config messages\nv-config autorole\nv-config ignored_channels\nv-config show```')
            }
        }
    }
});

bot.login('MzM5NzM5ODU5NTQ5NjgzNzEy.DFoW6g.LFoDAVvsDq77XIrkt0lBygFqXOw');