using System;
using System.Collections;
using System.Collections.Generic;
using System.Threading.Tasks;
using GameFramework.Event;
using UnityEngine;
using UnityEngine.UI;
using UnityGameFramework.Runtime;
using Vuplex.WebView;
using Vuplex.WebView.Demos;
using ZenFulcrum.EmbeddedBrowser;

public class ExamStudyForm : UIFormLogic
{

    public CanvasWebViewPrefab browserUI;

    public HardwareKeyboardListener _hardwareKeyboardListener { get; private set; }

    protected override void OnInit(object userData)
    {
        base.OnInit(userData);
        StartCoroutine(InItUiComponent());
    }

    protected override void OnOpen(object userData)
    {
        base.OnOpen(userData);
        GameMain.Event.Subscribe(OnBeginExamEvent.EventId, OnBeginExam);
        _setUpHardwareKeyboard();
    }

    private void OnBeginExam(object sender, GameEventArgs e)
    {
        OnBeginExamEvent onBeginExamEvent = (OnBeginExamEvent)e;
        string token = onBeginExamEvent.token;
        long timestamp = System.DateTime.Now.Ticks / 10000000;
        if (browserUI != null && browserUI.WebView.IsInitialized)
        {
            browserUI.WebView.LoadUrl(string.Format("{0}{1}&v={2}#/", HttpAddress.examAddress, UserData.token, timestamp));
        }
    }



    protected override void OnClose(bool isShutdown, object userData)
    {
        base.OnClose(isShutdown, userData);
        GameMain.Event.Unsubscribe(OnBeginExamEvent.EventId, OnBeginExam);
        _hardwareKeyboardListener = null;
    }

    IEnumerator InItUiComponent()
    {
        //browserUI = this.transform.Find("CanvasWebViewPrefab").GetComponent<CanvasWebViewPrefab>();


        // Wait for the CanvasWebViewPrefab to initialize, because the CanvasWebViewPrefab.WebView property
        // is null until the prefab has initialized.
        yield return new WaitUntil(()=> {
            return browserUI.WebView != null;
        });
        long timestamp = System.DateTime.Now.Ticks / 10000000;
        browserUI.WebView.LoadUrl(string.Format("{0}{1}&v={2}#/",HttpAddress.examAddress,UserData.token, timestamp));
    }

    
    void _setUpHardwareKeyboard()
    {
        // Send keys from the hardware (USB or Bluetooth) keyboard to the webview.
        // Use separate KeyDown() and KeyUp() methods if the webview supports
        // it, otherwise just use IWebView.SendKey().
        // https://developer.vuplex.com/webview/IWithKeyDownAndUp
        _hardwareKeyboardListener = HardwareKeyboardListener.Instantiate();
        _hardwareKeyboardListener.KeyDownReceived += (sender, eventArgs) =>
        {
            var webViewWithKeyDown = browserUI.WebView as IWithKeyDownAndUp;
            if (webViewWithKeyDown != null)
            {
                webViewWithKeyDown.KeyDown(eventArgs.Value, eventArgs.Modifiers);
            }
            else
            {
                browserUI.WebView.SendKey(eventArgs.Value);
            }
        };
        _hardwareKeyboardListener.KeyUpReceived += (sender, eventArgs) =>
        {
            var webViewWithKeyUp = browserUI.WebView as IWithKeyDownAndUp;
            webViewWithKeyUp?.KeyUp(eventArgs.Value, eventArgs.Modifiers);
        };
    }
}