'use strict';

// Load up libraries
const Discord = require("discord.js");
// Load config!
let config = require('config');
config = config.get('bot');

var aliases;
try {
  aliases = require("./alias.json");
} catch (e) {
  //No aliases defined
  aliases = {
    "test": {
      process: function(bot,msg){
        msg.channel.send('test');
      }
    }
}
}
var commands = {

};

var bot = new Discord.Client();

bot.on("ready", function() {
  console.log(
    "Logged in! Serving in " + bot.guilds.array().length + " servers"
  );
  require("./plugins.js").init();
  console.log("type " + config.prefix + "help in Discord for a commands list.");
  bot.user.setGame(
    config.prefix + "tip"
  );
});

bot.on("disconnected", function() {
  console.log("Disconnected!");
  process.exit(1); //exit node.js with an error
});

function checkMessageForCommand(msg, isEdit) {
  //check if message is a command
  if (msg.author.id != bot.user.id && msg.content.startsWith(config.prefix)) {
    console.log(
      "treating " + msg.content + " from " + msg.author + " as command"
    );
    var cmdTxt = msg.content.split(" ")[0].substring(config.prefix.length);
    var suffix = msg.content.substring(
      cmdTxt.length + config.prefix.length + 1
    ); //add one for the ! and one for the space
    if (msg.isMentioned(bot.user)) {
      try {
        cmdTxt = msg.content.split(" ")[1];
        suffix = msg.content.substring(
          bot.user.mention().length + cmdTxt.length + config.prefix.length + 1
        );
      } catch (e) {
        //no command
        msg.channel.send("Yes?");
        return;
      }
    }
    let alias = aliases[cmdTxt];
    if (alias) {
    var cmd = alias;
    } else {
    var cmd = commands[cmdTxt]; 
    }
    if (cmd) {
      // Add permission check here later on ;)
      try {
        cmd.process(bot, msg, suffix, isEdit);
      } catch (e) {
        var msgTxt = "command " + cmdTxt + " failed :(";
        if (config.debug) {
          msgTxt += "\n" + e.stack;
        }
        msg.channel.send(msgTxt);
      }
    }
  } else {
    //message isn't a command or is from us
    //drop our own messages to prevent feedback loops
    if (msg.author == bot.user) {
      return;
    }

    if (msg.author != bot.user && msg.isMentioned(bot.user)) {
      msg.channel.send("yes?"); //using a mention here can lead to looping
    } else {
    }
  }
}

bot.on("message", msg => checkMessageForCommand(msg, false));
bot.on("messageUpdate", (oldMessage, newMessage) => {
  checkMessageForCommand(newMessage, true);
});

exports.addCommand = function(commandName, commandObject) {
  try {
    commands[commandName] = commandObject;
  } catch (err) {
    console.log(err);
  }
};
exports.addCustomFunc = function(customFunc) {
  try {
    customFunc(bot);
  } catch (err) {
    console.log(err);
  }
}
exports.commandCount = function() {
  return Object.keys(commands).length;
};

bot.login(config.token);