models.js

var datatypes = {
  action: /^[-\w]$/,
  channel: /^[-_a-z0-9]*$/,
  nick: /^[-\w]$/,
  message: /^.{1,255}$/,
  timestamp: /^\d$/
}

var messagetype = {
  join: [
    'channel',
  ],
  say: [
    'message'
  ]
}

function valid(datatype, data){
  if(isNAN(data) && typeof data != 'string'){
    console.error('Datatype Validation Failed: unacceptable data '+ data);
    return false;
  }

  if (datatypes[datatype] == "undefined"){ 
    console.error('Datatype Validation Failed: invalid datatype '+ datatype); 
    return false;
  }

  if(typeof data != "string" || data.match(datatypes[datatype]) === null){
    console.log('Datatype Validation Failed: '+ datatypes[datatype] +" did not find a match in "+ data);
    return false;
  }

  return true;
}


function Message(action){
  this.action = valid(action) ? action;
  this.timestamp = new Date().getTime();

  this.setMessageAttribute = function(datatype, data){
    if(valid(datatype, data)){
      this[datatype] = data;
    }
  }
}


function JoinMessage(channel){
  Message.call(this, 'join');
  this.channel = channel;
}


function SayMessage(message){
  Message.call(this, 'say');
  this.message = message;
}