// ConsoleApplication20.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "pch.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#include <windows.h>
using namespace std;

#pragma comment(lib, "Ws2_32.lib")
#pragma warning(disable:4996)

int main()
{
	SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), 10); //zelena farba
	WSADATA wsaData;   //struktura wsadata na pracu s winsock
	int iResult;
	int o;

	iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);  //zakladna inicilializacia winsocku
	if (iResult != 0)
	{
		printf("WSAStartup failed : %d\n", iResult);
		return 1;
	}
	struct addrinfo *result = NULL, *ptr = NULL;     //praca s adresami
	struct addrinfo hints;

	ZeroMemory(&hints, sizeof(hints));
	hints.ai_family = AF_UNSPEC;
	hints.ai_socktype = SOCK_STREAM;
	hints.ai_protocol = IPPROTO_TCP;                //protokol TCP

	iResult = getaddrinfo("147.175.115.34", "777", &hints, &result);

	if (iResult != 0)                               //kontrola, ci nenastala chyba
	{
		printf("getaddrinfo failed : %d\n", iResult);
		WSACleanup();
		return 1;
	}
	else
		printf("getaddrinfo didn’t fail…\n");

	//vytvorenie socketu

	SOCKET ConnectSocket = INVALID_SOCKET;
	ptr = result;
	ConnectSocket = socket(ptr->ai_family, ptr->ai_socktype, ptr->ai_protocol); // pokus o vytvorenie socketu

	if (ConnectSocket == INVALID_SOCKET)           //kontrola
	{
		printf("Error at socket() : %ld\n", WSAGetLastError());
		freeaddrinfo(result);
		WSACleanup();
		return 1;
	}
	else
		printf("Error at socket DID NOT occur…\n");

	//pokus o pripojenie sa na server

	iResult = connect(ConnectSocket, ptr->ai_addr, (int)ptr->ai_addrlen);

	if (iResult == SOCKET_ERROR)     //kontrola, ci nenastala chyba
		printf("Not connected to server…\n");
	else
		printf("Connected to server!\n");

	if (iResult == SOCKET_ERROR)                   //osetrenie chyboveho stavu
	{
		closesocket(ConnectSocket);
		ConnectSocket = INVALID_SOCKET;
		WSACleanup();
		return 1;
	}
	Sleep(250);

	SetConsoleOutputCP(CP_UTF8);
	const char* sprava = "Adam Novotn" "\xc3\xbd \n";
	wprintf(L"%S", sprava);

	while (1)
	{
		//posielanie
		char sendbuf[4096];
		int abc = 4096;
		int o;
		printf("Zadaj retazec: ");
		fgets(sendbuf, abc, stdin);
		iResult = send(ConnectSocket, sendbuf, (int)strlen(sendbuf), 0);
		if (iResult == SOCKET_ERROR)
		{
			printf("send failed : %d\n", WSAGetLastError());
			closesocket(ConnectSocket);
			WSACleanup();
			return 1;
		}
		printf("Bytes Sent : %ld\n", iResult);     //vypisanie poctu odoslanych dat


		//prijimanie

#define DEFAULT_BUFLEN 4096                //velkost prijimacieho buffera
		int recvbuflen = DEFAULT_BUFLEN;
		int i;
		char recvbuf[DEFAULT_BUFLEN];

		iResult = recv(ConnectSocket, recvbuf, recvbuflen, 0);     //funkcia na príjimanie

		if (iResult > 0)
			printf("Bytes received : %d\n", iResult);     //prisli validne data, vypis poctu
		else if (iResult == 0)
			printf("Connection closed\n");                //v tomto pripade server ukoncil komunikaciu
		else
			printf("recv failed with error : %d\n", WSAGetLastError());     //ina chyba



		for (i = 0; i <= strlen(recvbuf); i++)
		{
			if (recvbuf[i] == '\n')
			{
				recvbuf[i] = '\0';
			}

		}


	}
	//zavretie socketu

	closesocket(ConnectSocket);
	WSACleanup();
}