Node.js Chat

Description:

A on-line chat. In the Front-end using HTML, CSS and JavaScript. And in the back-end, Node.js and Express, 
and the socket.io library to connect the two sides.
The main reason I chose to develop a chat as my final project is because it offers a wide range of 
possibilities, such as file sharing, user authentication, and much more. However, this project is 
not just about what I want to achieve, but also about my desire to improve my skills and learn new things.

Files

App.js:
    Is the server file, responsible for recieve and resend, read and write all messages the users send.

mensagens.json:
    It is the database of the project, easier reading and writing.

/public 
    index.html:
        Basic html, the script inside it, include, listening and emiting socket.io events.

    index.js:
    Main functions:
        AddMessage() - Display the message and the user inside a container;

        ApplyGUESTstate() - If the user do not set a username when send the message, it will create a 
        guest ID until the user provides some nick name or reload the page;

        CreateMsgObject() - Recieve the message and the username as parameters, to emit it to the server.

    style.css:
        Basic css.

Socket.io Events

    "Mensagem" - The client side emit the object created by "CreateMsgObject" to the server and write the 
    message in the database;
    "reenviarMensagem" 
        Server side: Brodcast the object back to the others clients;
        Client Side: Recieve and display the message;
    "SendState" - Send all the messages inside the database when a new client is connected.

Dependencies

    express: ^4.18.2;
    nodemon: ^2.0.22;
    socket.io: ^4.6.2;