/**
 * FreeRDP: A Remote Desktop Protocol Client
 * FreeRDP Windows Server
 *
 * Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <winpr/tchar.h>
#include <winpr/windows.h>

#include <freerdp/listener.h>
#include <freerdp/utils/sleep.h>
#include <freerdp/codec/rfx.h>
#include <freerdp/utils/stream.h>

#include "wf_info.h"
#include "wf_input.h"
#include "wf_mirage.h"
#include "wf_update.h"
#include "wf_settings.h"

#include "wf_peer.h"

void wf_peer_context_new(freerdp_peer* client, wfPeerContext* context)
{
	context->info = wf_info_get_instance();
	wf_info_peer_register(context->info, context);
}

void wf_peer_context_free(freerdp_peer* client, wfPeerContext* context)
{
	wf_info_peer_unregister(context->info, context);
}

void wf_peer_init(freerdp_peer* client)
{
	client->context_size = sizeof(wfPeerContext);
	client->ContextNew = (psPeerContextNew) wf_peer_context_new;
	client->ContextFree = (psPeerContextFree) wf_peer_context_free;
	
	freerdp_peer_context_new(client);
}

boolean wf_peer_post_connect(freerdp_peer* client)
{
	HDC hdc;
	wfInfo* wfi;
	rdpSettings* settings;
	wfPeerContext* context = (wfPeerContext*) client->context;

	wfi = context->info;
	settings = client->settings;

	hdc = GetDC(NULL);
	wfi->width = GetDeviceCaps(hdc, HORZRES);
	wfi->height = GetDeviceCaps(hdc, VERTRES);
	wfi->bitsPerPixel = GetDeviceCaps(hdc, BITSPIXEL);
	ReleaseDC(NULL, hdc);

	if ((settings->width != wfi->width) || (settings->height != wfi->height))
	{
		printf("Client requested resolution %dx%d, but will resize to %dx%d\n",
			settings->width, settings->height, wfi->width, wfi->height);

		settings->width = wfi->width;
		settings->height = wfi->height;
		settings->color_depth = wfi->bitsPerPixel;

		client->update->DesktopResize(client->update->context);
	}

	return true;
}

boolean wf_peer_activate(freerdp_peer* client)
{
	wfInfo* wfi;
	wfPeerContext* context = (wfPeerContext*) client->context;
	
	printf("PeerActivate\n");

	wfi = context->info;
	client->activated = true;
	wf_update_peer_activate(wfi, context);

	return true;
}

boolean wf_peer_logon(freerdp_peer* client, SEC_WINNT_AUTH_IDENTITY* identity, boolean automatic)
{
	printf("PeerLogon\n");

	if (automatic)
	{
		_tprintf(_T("Logon: User:%s Domain:%s Password:%s\n"),
			identity->User, identity->Domain, identity->Password);
	}

	return true;
}

void wf_peer_synchronize_event(rdpInput* input, uint32 flags)
{

}

void wf_peer_accepted(freerdp_listener* instance, freerdp_peer* client)
{
	CreateThread(NULL, 0, wf_peer_main_loop, client, 0, NULL);
}

DWORD WINAPI wf_peer_socket_listener(LPVOID lpParam)
{
	int i, fds;
	int rcount;
	int max_fds;
	void* rfds[32];
	fd_set rfds_set;
	wfPeerContext* context;
	freerdp_peer* client = (freerdp_peer*) lpParam;

	ZeroMemory(rfds, sizeof(rfds));
	context = (wfPeerContext*) client->context;

	while (1)
	{
		rcount = 0;

		if (client->GetFileDescriptor(client, rfds, &rcount) != true)
		{
			printf("Failed to get peer file descriptor\n");
			break;
		}

		max_fds = 0;
		FD_ZERO(&rfds_set);

		for (i = 0; i < rcount; i++)
		{
			fds = (int)(long)(rfds[i]);

			if (fds > max_fds)
				max_fds = fds;

			FD_SET(fds, &rfds_set);
		}
		
		if (max_fds == 0)
			break;
		
		select(max_fds + 1, &rfds_set, NULL, NULL, NULL);

		SetEvent(context->socketEvent);
		WaitForSingleObject(context->socketSemaphore, INFINITE);

		if (context->socketClose)
			break;
	}

	printf("Exiting Peer Socket Listener Thread\n");

	return 0;
}

void wf_peer_read_settings(freerdp_peer* client)
{
	if (!wf_settings_read_string_ascii(HKEY_LOCAL_MACHINE, _T("Software\\FreeRDP\\Server"), _T("CertificateFile"), &(client->settings->cert_file)))
		client->settings->cert_file = _strdup("server.crt");

	if (!wf_settings_read_string_ascii(HKEY_LOCAL_MACHINE, _T("Software\\FreeRDP\\Server"), _T("PrivateKeyFile"), &(client->settings->privatekey_file)))
		client->settings->privatekey_file = _strdup("server.key");
}

DWORD WINAPI wf_peer_main_loop(LPVOID lpParam)
{
	wfInfo* wfi;
	DWORD nCount;
	DWORD status;
	HANDLE handles[32];
	rdpSettings* settings;
	wfPeerContext* context;
	freerdp_peer* client = (freerdp_peer*) lpParam;

	wf_peer_init(client);

	settings = client->settings;
	settings->rfx_codec = true;
	settings->ns_codec = false;
	settings->jpeg_codec = false;
	wf_peer_read_settings(client);

	client->PostConnect = wf_peer_post_connect;
	client->Activate = wf_peer_activate;
	client->Logon = wf_peer_logon;

	client->input->SynchronizeEvent = wf_peer_synchronize_event;
	client->input->KeyboardEvent = wf_peer_keyboard_event;
	client->input->UnicodeKeyboardEvent = wf_peer_unicode_keyboard_event;
	client->input->MouseEvent = wf_peer_mouse_event;
	client->input->ExtendedMouseEvent = wf_peer_extended_mouse_event;

	client->Initialize(client);
	context = (wfPeerContext*) client->context;

	wfi = context->info;
	context->socketEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
	context->socketSemaphore = CreateSemaphore(NULL, 0, 1, NULL);
	context->socketThread = CreateThread(NULL, 0, wf_peer_socket_listener, client, 0, NULL);

	printf("We've got a client %s\n", client->local ? "(local)" : client->hostname);

	nCount = 0;
	handles[nCount++] = context->updateEvent;
	handles[nCount++] = context->socketEvent;

	while (1)
	{
		status = WaitForMultipleObjects(nCount, handles, FALSE, INFINITE);

		if (WaitForSingleObject(context->updateEvent, 0) == 0)
		{
			if (client->activated)
				wf_update_peer_send(wfi, context);

			ResetEvent(context->updateEvent);
			ReleaseSemaphore(wfi->updateSemaphore, 1, NULL);
		}

		if (WaitForSingleObject(context->socketEvent, 0) == 0)
		{
			if (client->CheckFileDescriptor(client) != true)
			{
				printf("Failed to check peer file descriptor\n");
				context->socketClose = TRUE;
			}

			ResetEvent(context->socketEvent);
			ReleaseSemaphore(context->socketSemaphore, 1, NULL);

			if (context->socketClose)
				break;
		}
	}

	printf("Client %s disconnected.\n", client->local ? "(local)" : client->hostname);

	if (WaitForSingleObject(context->updateEvent, 0) == 0)
	{
		ResetEvent(context->updateEvent);
		ReleaseSemaphore(wfi->updateSemaphore, 1, NULL);
	}

	wf_update_peer_deactivate(wfi, context);

	client->Disconnect(client);

	freerdp_peer_context_free(client);
	freerdp_peer_free(client);

	printf("Exiting Peer Main Loop Thread\n");

	return 0;
}