#include "debug.h"
#include "glCheckErrors.h"
#include "lib_GL_common.h"
#include "lib_SDL_common.h"
#include "quad.h"
#include "shader.h"
#include "signal_common.h"
#include "unused.h"
#include "UDPbase.h"
#include "UDPpacketVBuffer.h"
#include "FileIO.h"

#include <iostream>
#include <fstream>
#include <memory>
#include <vector>

#include <getopt.h>				 /* getopt */
#include <stdlib.h>				 /* exit */
#include <string.h>				 /* memset */
#include <unistd.h>				 /* getopt */

#include <glm/vec3.hpp>
#include <glm/gtc/type_ptr.hpp>

#define Perf_Diff(a, b) ((double) 1000 * ((double)(((double) (b) - (double) (a)) / (double) SDL_GetPerformanceFrequency ())))

#define MIN_FRAME_MS 7			 /* 144 Hz */

static void my_GetOpt (int, char **);
static void my_Usage (const char *);

static const char* host = "localhost";
static Uint16      port = 6666;
static int         channel = -1;
static std::string path = "./test/test_UDPpacketVBuffer.cpp";

static std::unique_ptr<UDPbase> client;

int
main (int argc, char **argv)
{
	UDPsocket udpsock;

	common_Signal_Init ();
	my_GetOpt (argc, argv);

	common_SDL_Init ();

	client = std::make_unique<UDPbase> (host, port);
	if (NULL == (udpsock = client->Open (0)))
	{
		SDL_Log ("Unable to open client port");
		return -1;
	}
	if (-1 == (channel = client->Bind (udpsock, -1)))
	{
		SDL_Log ("Unable to bind client port");
		return -1;
	}

	std::string buf;
	if (path == "-")
	{
		try {
			std::string line;
			while (getline (std::cin, line))
			{
				buf += line + "\n";
			}
		}
		catch (std::ifstream::failure& e) {
			// std::cout << e << std::endl;
		}
	}
	else
	{
		FileIO f (path, "r");
		buf = f.ReadToString ();
	}
	UDPpacket* packet = SDLNet_AllocPacket (buf.length ());
	IPaddress* addr = SDLNet_UDP_GetPeerAddress (udpsock, channel);
	packet->len = DEFAULT_MAX_PACKET_SIZE;
	packet->address = *addr;
	packet->channel = channel;
	UDPpacketVBuffer packetV (packet, &buf[0], buf.length ());
	packetV.Send (udpsock);

	client->Close (udpsock);

	common_SDL_Quit ();

	return 0;
}



static void
my_Usage (const char *argv0)
{
	fprintf (stderr, "Usage: %s [-h] [-s host] [-p port]\n", argv0);
}


static void
my_GetOpt (int argc, char **argv)
{
	int opt;
	host = "localhost";
	port = 6666;
	while ((opt = getopt (argc, argv, "f:hp:s:")) != -1)
	{
		switch (opt)
		{
			case 'p':
				port = strtol (optarg, NULL, 0);
				break;
			case 's':
				host = optarg;
				break;
			case 'f':
				path = std::string (optarg);
				break;
			case 'h':
			default:
				my_Usage (argv[0]);
				exit (EXIT_FAILURE);
				break;
		}
	}
}