Encapsulates

This module encapsulates code which is responsible for room chat

1. Wrapper function

createChat() code

Encapsulates chat code inside the closure

const createChat = function(room, messages, input, sendButton) {

2. Local variables

code

Define local variables - sfu constants and colours

const constants = SFU.constants;
const chatSelfColour = "green";
const chatTextColour = "black";
const chatOtherColour = "red";
const chatEventColour = "navy";

3. Subscribe to room events

code

Subscribe to room events that are related to chat functionality

...

.on(constants.SFU_ROOM_EVENT.LEFT, function(e) {
    appendMessage({
        nickName: e.name,
        message: e.type
    }, chatOtherColour, chatEventColour);
});

4. Send message to other participants

sendMessage() code

Define the sendMessage function which will be responsible for parsing input, sending it to server and displaying it in the local chat as a message

...

input.onkeyup = function(e) {
    if (e.keyCode === 13) {
        if (e.shiftKey) {

        } else {
            sendMessage();
        }
        return false;
    }
}

5. Display chat messages locally

Define function that will take care of formatting and displaying messages in local chat

...