#nullable enable
using System;
using System.Threading.Tasks;
using Foundation;
using Microsoft.Maui.Graphics.Platform;
using ObjCRuntime;
using SafariServices;
using UIKit;
 
namespace Microsoft.Maui.ApplicationModel
{
	partial class BrowserImplementation : IBrowser
	{
		public async Task<bool> OpenAsync(Uri uri, BrowserLaunchOptions options)
		{
			switch (options.LaunchMode)
			{
				case BrowserLaunchMode.SystemPreferred:
					await LaunchSafariViewController(uri, options);
					break;
				case BrowserLaunchMode.External:
					return await Launcher.Default.OpenAsync(uri);
			}
 
			return true;
		}
 
		private static async Task LaunchSafariViewController(Uri uri, BrowserLaunchOptions options)
		{
			var nativeUrl = new NSUrl(uri.AbsoluteUri);
#pragma warning disable CA1416 // TODO: 'SFSafariViewController(NSUrl, bool)' is unsupported on: 'ios' 11.0 and later, there is an overload SFSafariViewController(NSUrl, SFSafariViewControllerConfiguration) supported from ios 11.0+
#pragma warning disable CA1422 // Validate platform compatibility
			var sfViewController = new SFSafariViewController(nativeUrl, false);
#pragma warning restore CA1422 // Validate platform compatibility
#pragma warning restore CA1416 // probably need to call the overloads depending on OS version
			var vc = WindowStateManager.Default.GetCurrentUIViewController(true)!;
 
			if (options.PreferredToolbarColor != null)
				sfViewController.PreferredBarTintColor = options.PreferredToolbarColor.AsUIColor();
 
			if (options.PreferredControlColor != null)
				sfViewController.PreferredControlTintColor = options.PreferredControlColor.AsUIColor();
 
			if (sfViewController.PopoverPresentationController != null)
				sfViewController.PopoverPresentationController.SourceView = vc.View!;
 
			if (options.HasFlag(BrowserLaunchFlags.PresentAsFormSheet))
				sfViewController.ModalPresentationStyle = UIModalPresentationStyle.FormSheet;
			else if (options.HasFlag(BrowserLaunchFlags.PresentAsPageSheet))
				sfViewController.ModalPresentationStyle = UIModalPresentationStyle.PageSheet;
 
			await vc.PresentViewControllerAsync(sfViewController, true);
		}
	}
}