WebSocket API class

ws-api.ts

import { WebSocketMessage, WebSocketMessageType } from "../../common/ws-message.js"

export class WebSocketAPI {

    private static command_table: {[name:string]: Function} = {
        'ping': WebSocketAPI.ping,
        'echo': WebSocketAPI.echo
    }

    public static handle(message: WebSocketMessage): Promise<WebSocketMessage> {

        return new Promise((resolve, reject) => {

            if (message.msg_type in WebSocketAPI.command_table) {
                return resolve(WebSocketAPI.command_table[message.msg_type](message.data))
            }
            
            reject('invalid command')
        })
    }

    private static ping(): WebSocketMessage { return new WebSocketMessage(WebSocketMessageType.PING, 'pong') }

    private static echo (data: Object): WebSocketMessage { return new WebSocketMessage(WebSocketMessageType.ECHO, data) }
}