using CPF.Mac.ObjCRuntime;
using System;
using System.ComponentModel;
using System.Threading.Tasks;

namespace CPF.Mac.Foundation
{
	[Register("NSURLConnection", true)]
	public class NSUrlConnection : NSObject
	{
		private const string selSendSynchronousRequestReturningResponseError = "sendSynchronousRequest:returningResponse:error:";

		private static readonly IntPtr selCanHandleRequest_Handle = Selector.GetHandle("canHandleRequest:");

		private static readonly IntPtr selConnectionWithRequestDelegate_Handle = Selector.GetHandle("connectionWithRequest:delegate:");

		private static readonly IntPtr selInitWithRequestDelegate_Handle = Selector.GetHandle("initWithRequest:delegate:");

		private static readonly IntPtr selInitWithRequestDelegateStartImmediately_Handle = Selector.GetHandle("initWithRequest:delegate:startImmediately:");

		private static readonly IntPtr selStartHandle = Selector.GetHandle("start");

		private static readonly IntPtr selCancelHandle = Selector.GetHandle("cancel");

		private static readonly IntPtr selScheduleInRunLoopForMode_Handle = Selector.GetHandle("scheduleInRunLoop:forMode:");

		private static readonly IntPtr selUnscheduleFromRunLoopForMode_Handle = Selector.GetHandle("unscheduleFromRunLoop:forMode:");

		private static readonly IntPtr selUseCredentialForAuthenticationChallenge_Handle = Selector.GetHandle("useCredential:forAuthenticationChallenge:");

		private static readonly IntPtr selContinueWithoutCredentialForAuthenticationChallenge_Handle = Selector.GetHandle("continueWithoutCredentialForAuthenticationChallenge:");

		private static readonly IntPtr selCancelAuthenticationChallenge_Handle = Selector.GetHandle("cancelAuthenticationChallenge:");

		private static readonly IntPtr selPerformDefaultHandlingForAuthenticationChallenge_Handle = Selector.GetHandle("performDefaultHandlingForAuthenticationChallenge:");

		private static readonly IntPtr selRejectProtectionSpaceAndContinueWithChallenge_Handle = Selector.GetHandle("rejectProtectionSpaceAndContinueWithChallenge:");

		private static readonly IntPtr selSetDelegateQueue_Handle = Selector.GetHandle("setDelegateQueue:");

		private static readonly IntPtr selSendAsynchronousRequestQueueCompletionHandler_Handle = Selector.GetHandle("sendAsynchronousRequest:queue:completionHandler:");

		private static readonly IntPtr class_ptr = Class.GetHandle("NSURLConnection");

		public override IntPtr ClassHandle => class_ptr;

		public unsafe static NSData SendSynchronousRequest(NSUrlRequest request, out NSUrlResponse response, out NSError error)
		{
			IntPtr zero = IntPtr.Zero;
			IntPtr zero2 = IntPtr.Zero;
			void* value = &zero;
			void* value2 = &zero2;
			IntPtr arg = (IntPtr)value;
			IntPtr arg2 = (IntPtr)value2;
			IntPtr ptr = Messaging.IntPtr_objc_msgSend_IntPtr_IntPtr_IntPtr(class_ptr, Selector.GetHandle("sendSynchronousRequest:returningResponse:error:"), request.Handle, arg, arg2);
			if (zero != IntPtr.Zero)
			{
				response = (NSUrlResponse)Runtime.GetNSObject(zero);
			}
			else
			{
				response = null;
			}
			if (zero2 != IntPtr.Zero)
			{
				error = (NSError)Runtime.GetNSObject(zero2);
			}
			else
			{
				error = null;
			}
			return (NSData)Runtime.GetNSObject(ptr);
		}

		[Advice("Use Schedule (NSRunLoop, NSString) instead")]
		public virtual void Schedule(NSRunLoop aRunLoop, string forMode)
		{
			if (aRunLoop == null)
			{
				throw new ArgumentNullException("aRunLoop");
			}
			if (forMode == null)
			{
				throw new ArgumentNullException("forMode");
			}
			IntPtr intPtr = NSString.CreateNative(forMode);
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr_IntPtr(base.Handle, selScheduleInRunLoopForMode_Handle, aRunLoop.Handle, intPtr);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr_IntPtr(base.SuperHandle, selScheduleInRunLoopForMode_Handle, aRunLoop.Handle, intPtr);
			}
			NSString.ReleaseNative(intPtr);
		}

		[Advice("Use Unschedule (NSRunLoop, NSString) instead")]
		public virtual void Unschedule(NSRunLoop aRunLoop, string forMode)
		{
			if (aRunLoop == null)
			{
				throw new ArgumentNullException("aRunLoop");
			}
			if (forMode == null)
			{
				throw new ArgumentNullException("forMode");
			}
			IntPtr intPtr = NSString.CreateNative(forMode);
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr_IntPtr(base.Handle, selUnscheduleFromRunLoopForMode_Handle, aRunLoop.Handle, intPtr);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr_IntPtr(base.SuperHandle, selUnscheduleFromRunLoopForMode_Handle, aRunLoop.Handle, intPtr);
			}
			NSString.ReleaseNative(intPtr);
		}

		[EditorBrowsable(EditorBrowsableState.Advanced)]
		[Export("init")]
		public NSUrlConnection()
			: base(NSObjectFlag.Empty)
		{
			if (IsDirectBinding)
			{
				base.Handle = Messaging.IntPtr_objc_msgSend(base.Handle, Selector.Init);
			}
			else
			{
				base.Handle = Messaging.IntPtr_objc_msgSendSuper(base.SuperHandle, Selector.Init);
			}
		}

		[EditorBrowsable(EditorBrowsableState.Advanced)]
		[Export("initWithCoder:")]
		public NSUrlConnection(NSCoder coder)
			: base(NSObjectFlag.Empty)
		{
			if (IsDirectBinding)
			{
				base.Handle = Messaging.IntPtr_objc_msgSend_IntPtr(base.Handle, Selector.InitWithCoder, coder.Handle);
			}
			else
			{
				base.Handle = Messaging.IntPtr_objc_msgSendSuper_IntPtr(base.SuperHandle, Selector.InitWithCoder, coder.Handle);
			}
		}

		[EditorBrowsable(EditorBrowsableState.Advanced)]
		public NSUrlConnection(NSObjectFlag t)
			: base(t)
		{
		}

		[EditorBrowsable(EditorBrowsableState.Advanced)]
		public NSUrlConnection(IntPtr handle)
			: base(handle)
		{
		}

		[Export("canHandleRequest:")]
		public static bool CanHandleRequest(NSUrlRequest request)
		{
			if (request == null)
			{
				throw new ArgumentNullException("request");
			}
			return Messaging.bool_objc_msgSend_IntPtr(class_ptr, selCanHandleRequest_Handle, request.Handle);
		}

		[Export("connectionWithRequest:delegate:")]
		public static NSUrlConnection FromRequest(NSUrlRequest request, NSUrlConnectionDelegate connectionDelegate)
		{
			if (request == null)
			{
				throw new ArgumentNullException("request");
			}
			if (connectionDelegate == null)
			{
				throw new ArgumentNullException("connectionDelegate");
			}
			return (NSUrlConnection)Runtime.GetNSObject(Messaging.IntPtr_objc_msgSend_IntPtr_IntPtr(class_ptr, selConnectionWithRequestDelegate_Handle, request.Handle, connectionDelegate.Handle));
		}

		[Export("initWithRequest:delegate:")]
		public NSUrlConnection(NSUrlRequest request, NSUrlConnectionDelegate connectionDelegate)
			: base(NSObjectFlag.Empty)
		{
			if (request == null)
			{
				throw new ArgumentNullException("request");
			}
			if (connectionDelegate == null)
			{
				throw new ArgumentNullException("connectionDelegate");
			}
			if (IsDirectBinding)
			{
				base.Handle = Messaging.IntPtr_objc_msgSend_IntPtr_IntPtr(base.Handle, selInitWithRequestDelegate_Handle, request.Handle, connectionDelegate.Handle);
			}
			else
			{
				base.Handle = Messaging.IntPtr_objc_msgSendSuper_IntPtr_IntPtr(base.SuperHandle, selInitWithRequestDelegate_Handle, request.Handle, connectionDelegate.Handle);
			}
		}

		[Export("initWithRequest:delegate:startImmediately:")]
		public NSUrlConnection(NSUrlRequest request, NSUrlConnectionDelegate connectionDelegate, bool startImmediately)
			: base(NSObjectFlag.Empty)
		{
			if (request == null)
			{
				throw new ArgumentNullException("request");
			}
			if (connectionDelegate == null)
			{
				throw new ArgumentNullException("connectionDelegate");
			}
			if (IsDirectBinding)
			{
				base.Handle = Messaging.IntPtr_objc_msgSend_IntPtr_IntPtr_bool(base.Handle, selInitWithRequestDelegateStartImmediately_Handle, request.Handle, connectionDelegate.Handle, startImmediately);
			}
			else
			{
				base.Handle = Messaging.IntPtr_objc_msgSendSuper_IntPtr_IntPtr_bool(base.SuperHandle, selInitWithRequestDelegateStartImmediately_Handle, request.Handle, connectionDelegate.Handle, startImmediately);
			}
		}

		[Export("start")]
		public virtual void Start()
		{
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend(base.Handle, selStartHandle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper(base.SuperHandle, selStartHandle);
			}
		}

		[Export("cancel")]
		public virtual void Cancel()
		{
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend(base.Handle, selCancelHandle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper(base.SuperHandle, selCancelHandle);
			}
		}

		[Export("scheduleInRunLoop:forMode:")]
		public virtual void Schedule(NSRunLoop aRunLoop, NSString forMode)
		{
			if (aRunLoop == null)
			{
				throw new ArgumentNullException("aRunLoop");
			}
			if (forMode == null)
			{
				throw new ArgumentNullException("forMode");
			}
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr_IntPtr(base.Handle, selScheduleInRunLoopForMode_Handle, aRunLoop.Handle, forMode.Handle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr_IntPtr(base.SuperHandle, selScheduleInRunLoopForMode_Handle, aRunLoop.Handle, forMode.Handle);
			}
		}

		[Export("unscheduleFromRunLoop:forMode:")]
		public virtual void Unschedule(NSRunLoop aRunLoop, NSString forMode)
		{
			if (aRunLoop == null)
			{
				throw new ArgumentNullException("aRunLoop");
			}
			if (forMode == null)
			{
				throw new ArgumentNullException("forMode");
			}
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr_IntPtr(base.Handle, selUnscheduleFromRunLoopForMode_Handle, aRunLoop.Handle, forMode.Handle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr_IntPtr(base.SuperHandle, selUnscheduleFromRunLoopForMode_Handle, aRunLoop.Handle, forMode.Handle);
			}
		}

		[Export("useCredential:forAuthenticationChallenge:")]
		public virtual void UseCredentials(NSUrlCredential credential, NSUrlAuthenticationChallenge challenge)
		{
			if (credential == null)
			{
				throw new ArgumentNullException("credential");
			}
			if (challenge == null)
			{
				throw new ArgumentNullException("challenge");
			}
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr_IntPtr(base.Handle, selUseCredentialForAuthenticationChallenge_Handle, credential.Handle, challenge.Handle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr_IntPtr(base.SuperHandle, selUseCredentialForAuthenticationChallenge_Handle, credential.Handle, challenge.Handle);
			}
		}

		[Export("continueWithoutCredentialForAuthenticationChallenge:")]
		public virtual void ContinueWithoutCredentialForAuthenticationChallenge(NSUrlAuthenticationChallenge challenge)
		{
			if (challenge == null)
			{
				throw new ArgumentNullException("challenge");
			}
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr(base.Handle, selContinueWithoutCredentialForAuthenticationChallenge_Handle, challenge.Handle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr(base.SuperHandle, selContinueWithoutCredentialForAuthenticationChallenge_Handle, challenge.Handle);
			}
		}

		[Export("cancelAuthenticationChallenge:")]
		public virtual void CancelAuthenticationChallenge(NSUrlAuthenticationChallenge challenge)
		{
			if (challenge == null)
			{
				throw new ArgumentNullException("challenge");
			}
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr(base.Handle, selCancelAuthenticationChallenge_Handle, challenge.Handle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr(base.SuperHandle, selCancelAuthenticationChallenge_Handle, challenge.Handle);
			}
		}

		[Export("performDefaultHandlingForAuthenticationChallenge:")]
		public virtual void PerformDefaultHandlingForChallenge(NSUrlAuthenticationChallenge challenge)
		{
			if (challenge == null)
			{
				throw new ArgumentNullException("challenge");
			}
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr(base.Handle, selPerformDefaultHandlingForAuthenticationChallenge_Handle, challenge.Handle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr(base.SuperHandle, selPerformDefaultHandlingForAuthenticationChallenge_Handle, challenge.Handle);
			}
		}

		[Export("rejectProtectionSpaceAndContinueWithChallenge:")]
		public virtual void RejectProtectionSpaceAndContinueWithChallenge(NSUrlAuthenticationChallenge challenge)
		{
			if (challenge == null)
			{
				throw new ArgumentNullException("challenge");
			}
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr(base.Handle, selRejectProtectionSpaceAndContinueWithChallenge_Handle, challenge.Handle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr(base.SuperHandle, selRejectProtectionSpaceAndContinueWithChallenge_Handle, challenge.Handle);
			}
		}

		[Export("setDelegateQueue:")]
		public virtual void SetDelegateQueue(NSOperationQueue queue)
		{
			if (queue == null)
			{
				throw new ArgumentNullException("queue");
			}
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr(base.Handle, selSetDelegateQueue_Handle, queue.Handle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr(base.SuperHandle, selSetDelegateQueue_Handle, queue.Handle);
			}
		}

		[Export("sendAsynchronousRequest:queue:completionHandler:")]
		public unsafe static void SendAsynchronousRequest(NSUrlRequest request, NSOperationQueue queue, NSUrlConnectionDataResponse completionHandler)
		{
			if (request == null)
			{
				throw new ArgumentNullException("request");
			}
			if (queue == null)
			{
				throw new ArgumentNullException("queue");
			}
			if (completionHandler == null)
			{
				throw new ArgumentNullException("completionHandler");
			}
			BlockLiteral blockLiteral = default(BlockLiteral);
			BlockLiteral* ptr = &blockLiteral;
			blockLiteral.SetupBlock(Trampolines.SDNSUrlConnectionDataResponse.Handler, completionHandler);
			Messaging.void_objc_msgSend_IntPtr_IntPtr_IntPtr(class_ptr, selSendAsynchronousRequestQueueCompletionHandler_Handle, request.Handle, queue.Handle, (IntPtr)(void*)ptr);
			ptr->CleanupBlock();
		}

		public static Task<NSUrlAsyncResult> SendRequestAsync(NSUrlRequest request, NSOperationQueue queue)
		{
			TaskCompletionSource<NSUrlAsyncResult> tcs = new TaskCompletionSource<NSUrlAsyncResult>();
			SendAsynchronousRequest(request, queue, delegate(NSUrlResponse response, NSData data, NSError error)
			{
				if (error != null)
				{
					tcs.SetException(new NSErrorException(error));
				}
				else
				{
					tcs.SetResult(new NSUrlAsyncResult(response, data));
				}
			});
			return tcs.Task;
		}
	}
}