"use strict";

// Global objects for debugging purposes
let client;
let ui;

/**
 * Class for handling the UI.
 */
class UI {
    constructor() {
        this.client = null;

        // Initialize the UI
        this.initUI();

        // TODO start client only after the user entered their nickname
        this.initClient();
    }

    /**
     * Initialize the web UI.
     */
    initUI() {
        // TODO stub
    }

    /**
     * Create instance of Client and initialize connection.
     */
    initClient() {
        const wsUri = AppSettings.serverWsUri;
        this.client = new Client(wsUri);

        // Subscribe to Client events
        this.client.on("initialized", this._onClientInit.bind(this));
        this.client.on("disconnected", this._onClientDisconnect.bind(this));
        this.client.on("connectionError", this._onClientError.bind(this));
        this.client.on("receivedMessage", this._onClientReceivedMessage.bind(this));
    }

    _onClientInit() {
        console.log("UI: Connection initialized!");

        // Send a test message
        this.client.sendChatMessage("Meow meow! :3");
    }

    _onClientDisconnect() {
        console.log("UI: Connection closed!");
    }

    _onClientError() {
        console.log("UI: Connection error! :(");
    }

    _onClientReceivedMessage(msg) {
        console.log("UI: Message from '" + msg.from + "', text: '" + msg.text + "'");
    }
}

// Execute this on start (wrapped in an anonymous function)
(function() {
    // TODO
    ui = new UI();
    client = ui.client;
})();