mime-chat/src/background/session.ts
2021-02-10 20:46:10 -06:00

128 lines
3.2 KiB
TypeScript

import WebSocket from 'ws';
import { windowEmitter } from './windowEmitter';
import { ipcMain } from "electron";
const EventEmitter = require('events');
class SocketEmitter extends EventEmitter {}
export const socketEmitter = new SocketEmitter();
interface RenderMessage {
type: 'render';
content: string;
context: string;
subContext: string;
modifiers: string;
time: string;
id: string;
}
interface UserCreds {
email: string;
password: string;
}
const ip = 'ws://localhost';
const port = 8081;
const reconnectTimeout = 3000; //ms
let socket: WebSocket;
let success = false;
let auth = false;
const receiveMessage = (message: string): void => {
while(!auth) {
console.log('window emitter @ session.ts recieve')
windowEmitter.emit('auth-res', message);
return;
}
const parsed: RenderMessage = JSON.parse(message);
if (parsed.type === "render") {
windowEmitter.emit('ipc-renderer', {
endpoint: 'render-message',
message: parsed
});
}
}
const authUser = async (event: any, payload: string | UserCreds | null): Promise<string> => {
return new Promise((resolve, reject) => {
console.log('authenticating...');
console.log('window emitter @ session.ts auth')
windowEmitter.on('auth-res', (res: string) => {
if (res === 'locked') {
reject(res);
} else {
auth = true;
resolve(res);
}
});
if (!payload) {
socket.send('no-token');
} else if (typeof payload === 'string' || payload instanceof String) {
socket.send(payload);
} else {
socket.send(JSON.stringify(payload));
}
});
};
export const initSession = () => {
if (socket) {
socket.removeAllListeners();
socket.terminate();
socket.close();
success = false;
}
console.log('Connecting to Crimata Servers...');
socket = new WebSocket(`${ip}:${port}`);
socket.binaryType = 'arraybuffer';
// handle renderer auth-token event
ipcMain.removeHandler('auth-user'); // avoid setting duplicate handlers
ipcMain.handle('auth-user', authUser);
socket.on('open', () => {
console.log('Success! Connected to Crimata.');
// fetch token from renderer
windowEmitter.emit('ipc-renderer', {
endpoint: 'fetch-token',
message: null
});
success = true;
});
socket.on('error', (e) => {
console.log('ERROR: Failed to connect.');
socket.removeAllListeners();
socket.close();
setTimeout(()=> {
if (!success) {
console.log('Attempting reconnect.');
initSession();
}
}, reconnectTimeout);
})
socket.on('close', () => {
console.log('Connection droped. Restarting.')
initSession();
})
socket.on("message", receiveMessage);
}
export const sendMessage = (content: string | Buffer) => {
if (content instanceof Buffer) {
socket.send(content);
} else if (content){
socket.send(JSON.stringify(content));
}
}