Convert to Swift code

```//Hold a chat.
var chat = new Webchat(window.location.host);

//Define what a chat is.
function Webchat(hostname) {

//Declarations
var chat = this;
var username = "";
var displayName = "";
var avatar = "";

//Start Lifecycle
chat.socket = new WebSocket('ws://' + hostname + '/chat', 'chat');

//Start Chat Sequence On New Chat
chat.socket.onopen = function() {
chat.promptUserInfo();
}

//Get & Send Basic Info to Server
chat.promptUserInfo = function() {
while (!username) {
username = prompt('What is your gravatar email? (anything but blank works)');
}

while (!displayName) {
displayName = prompt('What do you want to be called?');
}

var hash = md5(username.toLowerCase());
avatar = "https://www.gravatar.com/avatar/" + hash;

chat.start(username, avatar, displayName);
}

//Actually setup the chat window and start talking
chat.start = function(email, avatarImageURI, name) {
var json = JSON.stringify({"email":email, "avatar":avatarImageURI, "displayName": name});
chat.socket.send(json);
showChatWindow(); //This triggers the animation that shows the main window, defined in animations.js
}

//Append New Messages to the Chat Window
chat.appendMessage = function(message, avatar, selfSent) {

var messageSection = document.querySelector('.messages');

var div = document.createElement('div');
div.className = 'message';

var image = document.createElement('img');
image.className = 'avatar';
image.src = avatar;
image.alt = 'Avatar';

var span = document.createElement('span');
span.innerHTML = message;

if (selfSent) {
div.className += ' self';
}

div.appendChild(image);
div.appendChild(span);

messageSection.appendChild(div);
messageSection.scrollTop = messageSection.scrollHeight;
}

//Send New Messages to Server
chat.sendMessage = function(message) {
var json = JSON.stringify({"email": username, "avatar": avatar, "displayName": displayName, "message": message});
chat.socket.send(json);
}

//Receive New Messages from the Server
chat.socket.onmessage = function(received) {
var jsonAry = JSON.parse(received.data);
var message = jsonAry["message"];
var avatar = jsonAry["avatar"];
var selfSent = false;
chat.appendMessage(message, avatar, selfSent);
}

//Handle Chat Text Submission
$('form').on('submit', function(form) {
form.preventDefault();

var text = $('.sendbar-input').val();

chat.appendMessage(text, avatar, true);
chat.sendMessage(text);

$('.sendbar-input').val('');
});
};```

i have this code in front end with js script I like to convert it into a swift code for my ios is anybody can help about yes i am using Chatto for my chat app
thank advance

note: sorry i know its not issue but i am learning chatto how to use it
i have written my back api with swift server side app

The issue provides a JavaScript WebSocket chat implementation and identifies Chatto as the intended iOS framework, but names no repository files or tests. Start by reviewing Chatto's integration points and comparing them with the supplied client behavior; done would require a defined Swift implementation that works with the author's Swift server API.

Written by the indexing model from the issue text.