var fs = require('fs');
var mineflayer = require('mineflayer');

if(process.argv.length < 4 || process.argv.length > 6) {
  console.log("Usage : node chatterbot.js <host> <port> [<name>] [<password>]");
  process.exit(1);
}

var bot = mineflayer.createBot({
  host: process.argv[2],
  port: parseInt(process.argv[3]),
  username: process.argv[4] ? process.argv[4] : "chatterbox",
  password: process.argv[5],
  verbose: true,
});

function dateFormat(date, fstr, utc) {
        utc = utc ? 'getUTC' : 'get';
        return fstr.replace (/%[YmdHMS]/g, function (m) {
            switch (m) {
            case '%Y': return date[utc + 'FullYear'] (); // no leading zeros required
            case '%m': m = 1 + date[utc + 'Month'] (); break;
            case '%d': m = date[utc + 'Date'] (); break;
            case '%H': m = date[utc + 'Hours'] (); break;
            case '%M': m = date[utc + 'Minutes'] (); break;
            case '%S': m = date[utc + 'Seconds'] (); break;
            default: return m.slice (1); // unknown code, remove %
            }
            // add leading zero if required
            return ('0' + m).slice (-2);
        });
    }

  function handleMessage(jsonMsg) {
      var msg;

      if (typeof jsonMsg.extra == "undefined") {
        // this message wasn't in the usual skyblock/mc server format. This tends to be things like whisper commands
        if ((typeof jsonMsg.text != "undefined") && (jsonMsg.text == "")) {
          return;
        }
        msg = {
           "msg": "std message, unparsed:"+JSON.stringify(jsonMsg),
           "type": "unknown",
           "date": utils.shortTime()
        }
        console.log(JSON.stringify(msg));
      } else {
        // skyblock messages, and I think all non-mc-server messages come in in this data structure
        var t = "";
        for(var x=0;x<jsonMsg.extra.length;x++) {
        if (typeof jsonMsg.extra[x] == "string") {
          t+= jsonMsg.extra[x];
        } else {
          t+= jsonMsg.extra[x].text;
        }
      }
        msg = {
           "msg": t,
           "type": "unknown",
           "date": dateFormat(new Date(), "%H:%M:%S")
        }
       // show (all) the message to the screen
       //console.log(t);

       var reg_ex = /^\[\[([^\]]+)\] ([^\s]+) -> me\] (.*)/;
      if (msg.msg.match(reg_ex)) {
        var msg_data = msg.msg.match(reg_ex);
        if (msg_data[3].startsWith("!doge")) {
        console.log("At " + dateFormat(new Date(), "%H:%M:%S") + ", " + msg_data[2] + " executed command \"!doge\"");
          bot.chat(msg_data[2] + " loves dank memes!");
          //bot.whisper(msg_data[2], "much wow");
        } else {
            if (msg_data[3].startsWith("!time")) {
            console.log("At " + dateFormat(new Date(), "%H:%M:%S") + ", " + msg_data[2] + " executed command \"!time\"");
                bot.whisper(msg_data[2], "The current time in Eastern Time is: " + dateFormat(new Date(), "%H:%M:%S"));
            }
            else{
            console.log("At " + dateFormat(new Date(), "%H:%M:%S") + ", " + msg_data[2] + " did an invalid command! \"" + msg_data[3] + "\"");
            //bot.whisper(msg_data[2], "Invalid command!");
            //that freaks people out ^^
            }
      }
      }

      // write all msgs to a log file
      //fs.appendFile(__dirname + '/msgs/msgs'+dateFormat(new Date(), "%H:%M:%S")+'.txt', msg.date+' - '+msg.msg+"\n", function (err) { });
  };

bot.on('message', handleMessage);