import DataChannel from "./networking/DataChannel.js";
import Signaler from "./networking/Signaler.js";

/**
 * A local server. Handles all the important game logic, and communicates with clients via DataChannels.
 */
export default class SkribblServer {
	/**
	 * Starts a new SkribblServer.
	 */
	constructor(){
		this._readyPromise = (async()=>{
			this._id = await Signaler.host(dataChannel=>{
				this.connect(dataChannel);
			});
		})();
	}

	/**
	 * Waits until the server is ready.
	 */
	async waitUntilReady(){
		return this._readyPromise;
	}

	/**
	 * The ID others can use to connect to this server.
	 * @readonly
	 */
	get id(){
		return this._id;
	}

	/**
	 * Returns the full url others can use to connect to this server.
	 * @readonly
	 */
	get url(){
		return document.location.host+document.location.pathname+"#"+this._id;
	}

	/**
	 * Adds an incoming connection as a client.
	 * @param {DataChannel} dataChannel
	 */
	connect(dataChannel){
		dataChannel.onMessage(message=>{
			console.log(`message from client: "${message}"`);
			dataChannel.send("Got your message :D");
		});
	}
}