#include <cstdint>
#include <ctype.h>
#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <unistd.h>

#include "server_structs.h"
#include "socket.h"

const int SERVER_OUT_PORT = 12000;
const int SERVER_IN_PORT = 11000;
const char *SERVER_OUT_IP = "127.0.0.1";

int main(void) {

	printf("[+] Starting server...\n");
	// Printf information about the server
	printf("[+] Server listening on port %d\n", SERVER_IN_PORT);
	printf("[+] Server sending to %s:%d\n", SERVER_OUT_IP, SERVER_OUT_PORT);

	// Create UDP socket
	int sock_FD = connect_udp_socket(SERVER_OUT_IP, SERVER_OUT_PORT);
	if (sock_FD < 0) {
		fprintf(stderr, "[-] Failed to create UDP socket\n");
		return -1;
	}

	handshake hs;
	hs.identifier = 1;
	hs.operationId = 1;
	hs.version = 0;
	// Send handshake message

	printf("[+] Sending handshake message...\t");
	ssize_t bytes_sent = send_udp_message((int)sock_FD, (const char *)&hs, SERVER_OUT_IP, uint16_t(SERVER_OUT_PORT));
	if (bytes_sent >= 0) {
		printf("OK (%zd bytes)\n", bytes_sent);
	} else {
		fprintf(stderr, "ERROR. \n");
		close((int)sock_FD);
		return -2;
	}

	uint8_t buffer[512]; // bigger than struct
	ssize_t bytes_received = recv(sock_FD, buffer, sizeof(buffer), 0);

	if (bytes_received >= sizeof(handshackerResponse)) {
		handshackerResponse resp;
		memcpy(&resp, buffer, sizeof(handshackerResponse));

		printf("[+] Received handshake response:\n");
		printf("  Car: %0x\n", resp.carName);
		printf("  Driver: %0x\n", resp.driverName);
		printf("  Identifier: %d\n", resp.identifier);
		printf("  Version: %0x\n", resp.version);
		printf("  Track: %0x\n", resp.trackName);
		printf("  Config: %0x\n", resp.trackConfig);
	} else {
		printf("[!] Packet too short for handshake response (%zd bytes)\n", bytes_received);
	}





	return 0;
}