using Jugenddienst_Stunden.Models;
using Microsoft.Maui.Controls;
using System.Collections.Generic;
using ZXing.Net.Maui;

namespace Jugenddienst_Stunden.Views;

public partial class LoginPage : ContentPage {

	private DateTime _lastDetectionTime;
	private readonly TimeSpan _detectionInterval = TimeSpan.FromSeconds(5);

	public LoginPage() {
		InitializeComponent();

		barcodeScannerView.Options = new ZXing.Net.Maui.BarcodeReaderOptions {
			Formats = ZXing.Net.Maui.BarcodeFormat.QrCode,
			AutoRotate = true,
			Multiple = false
		};
	}

	//public event EventHandler<string> AlertEvent;

	private void BarcodesDetected(object sender, ZXing.Net.Maui.BarcodeDetectionEventArgs e) {
		//var first = e.Results?.FirstOrDefault();
		var currentTime = DateTime.Now;
		if ((currentTime - _lastDetectionTime) > _detectionInterval) {
			_lastDetectionTime = currentTime;
			foreach (var barcode in e.Results) {
				if (Stunde.apiKey != barcode.Value) {
					MainThread.InvokeOnMainThreadAsync(async () => {
						//await DisplayAlert("Barcode erkannt", $"Barcode: {barcode.Format} - {barcode.Value}", "OK");

						try {
							var op = await Models.Operator.LoadData(barcode.Value);
							Models.Stunde.apiKey = barcode.Value;
							Models.Stunde.name = op.name;
							Models.Stunde.surname = op.surname;
							Title = op.name + " " + op.surname;

							Preferences.Default.Set("apiKey", barcode.Value);
							Preferences.Default.Set("name", op.name);
							Preferences.Default.Set("surname", op.surname);

							await DisplayAlert("Login erfolgreich", op.name + " " + op.surname, "OK");
						} catch (Exception e) {
							//AlertEvent?.Invoke(this, e.Message);
							await DisplayAlert("Fehler",
							e.Message,
							"OK");
						}



					});
				} else {
					MainThread.InvokeOnMainThreadAsync(() => {
						DisplayAlert("Bereits eingeloggt",
							Preferences.Default.Get("name", "") + " " + Preferences.Default.Get("surname", ""),
							"OK");
					});
				}
			}
		}

		//if (first is null) {
		//	return;
		//}
		//Dispatcher.DispatchAsync(async () => {
		//	await DisplayAlert("Scan-Ergebnis", $"Barcode: {first.Value}", "OK");
		//});
		//MainThread.InvokeOnMainThreadAsync(() => {
		//	DisplayAlert("Barcode erkannt", $"Barcode: {first.Format} - {first.Value}", "OK");
		//	Models.Stunde.apiKey = first.Value;
		//});

	}

	protected override void OnDisappearing() {
		base.OnDisappearing();
		barcodeScannerView.CameraLocation = CameraLocation.Front;
		barcodeScannerView.IsDetecting = false;

	}

	protected override void OnAppearing() {
		base.OnAppearing();

		barcodeScannerView.IsDetecting = true;
		barcodeScannerView.CameraLocation = CameraLocation.Rear;
	}


}