#include <iostream>
#include <fstream>
#include <ctime>
using namespace std;
typedef unsigned int uint;

struct Wallet {
	double fiatMoney;
	char owner[256];
	unsigned id;
};

struct Transaction {
	unsigned senderId;
	unsigned receiverId;
	double fmiCoins;
	long long time;
};

struct Order {
	enum Type { SELL, BUY } type;
	unsigned walletId;
	double fmiCoins;
};

bool commandCompare(const char* myCommand, const char* command)
{
	while (*myCommand)
	{
		if (*myCommand != *command)
		{
			return false;
		}
		myCommand++;
		command++;
	}
	return true;
}

const char *walletsDirectory = "wallets.dat";
const char *transactionsDirectory = "transactions.dat";
const char *ordersDirectory = "orders.dat";
const char *addwallet = "add-wallet";
const char *makeorder = "make-order";

void addWallet()
{
	fstream myWalletFile;
	fstream myTransactionsFile;
	Wallet user;
	Transaction bonusCoins;
	uint currentID = 0;

	myWalletFile.open(walletsDirectory, ios::in | ios::binary);
	if (!myWalletFile)
	{
		myWalletFile.open(walletsDirectory, ios::out | ios::binary);
		myWalletFile.close();
	}

	myWalletFile.open(walletsDirectory, ios::in | ios::binary);
	myWalletFile.seekg(0, ios::end);
	uint fileSize = myWalletFile.tellg();
	if (fileSize)
	{
		myWalletFile.seekg(-4, ios::end);
		myWalletFile.read((char *)&currentID, sizeof(currentID));
	}
	user.id = currentID + 1;
	myWalletFile.close();

	myWalletFile.open(walletsDirectory, ios::app | ios::binary);
	if (!myWalletFile)
	{
		cout << "qweq";
	}
	cin >> user.fiatMoney;
	cin.clear();
	cin.ignore(1000, '\n');
	cin.getline(user.owner, 256);
	myWalletFile.write((const char*)&user, sizeof(user));
	myWalletFile.close();

	bonusCoins.fmiCoins = user.fiatMoney / 375;
	bonusCoins.receiverId = user.id;
	bonusCoins.senderId = UINT_MAX;
	bonusCoins.time = time(NULL);

	myTransactionsFile.open(transactionsDirectory, ios::out | ios::app);
	myTransactionsFile.write((const char*)&bonusCoins, sizeof(bonusCoins));
	myTransactionsFile.close();
}

void makeOrder(Transaction receiverid, Transaction senderid,)
{

}

int main()
{
	char myCommand[255];
	for (;;)
	{
		cin >> myCommand;
		if (commandCompare(myCommand, addwallet))
		{
			addWallet();
		}
		else
		{
			cout << "Wrong command used. Try again." << endl;
			continue;
		}
	}
	return 0;
}