Wallet.cpp

#include "Wallet.h"
#include "CSVReader.h"
#include <iostream>

Wallet::Wallet()
{

}
/** Inster wallet*/
void Wallet::insertCurrency(std::string type, double amount)
{
    double balance;
    if (amount < 0) {
        throw std::exception{};
    }
    if (currencies.count(type) == 0) 
    {
        balance = 0;
    }
    else {
        balance = currencies[type];
    }
    balance += amount;
    currencies[type] = balance;
}

bool Wallet::removeCurrency(std::string type, double amount)
{
    double balance;
    if (amount < 0) {
        return false;
    }
    if (currencies.count(type) == 0) 
    {
        return false;
    }
    else {
        if (containsCurrency(type, amount))
        {
            currencies[type] -= amount;
            return true;
        } 
        else 
            return false;
        
    }
    
}

/** Check if the wallet contains this much currency or more*/
bool Wallet::containsCurrency(std::string type, double amount)
{
    if (currencies.count(type) == 0) // not there yet
        return false;
    else
        return (currencies[type] >= amount);
}

/** Generate a str repr*/
std::string Wallet::toString()
{
    std::string s;

    for (std::pair<std::string, double> pair : currencies )
    {
        std::string currency = pair.first;
        double amount = pair.second;
        s+= currency+ " : " + std::to_string(amount) + "\n";
    }
    return s;
}


bool Wallet::canFulfillOrder(OrderBookEntry order)
{   
    std::vector<std::string> currs = CSVReader::tokenise(order.product, '/');
    //ask
    if (order.orderType == OrderBookType::ask) 
    {
        double a = order.amount;
        std::string currency = currs[0];
        std::cout << "Wallet::canFulfillOrder" << currency << " : " << a << std::endl;
        return containsCurrency(currency, a);
    }

    //bid
    if (order.orderType == OrderBookType::bid) 
    {
        double a = order.amount * order.price;
        std::string currency = currs[1];
        std::cout << "Wallet::canFulfillOrder " << currency << " : " << a << std::endl;
        return containsCurrency(currency, a);
    }

    return false;
}


void Wallet::processSale(OrderBookEntry& sale)
{
    std::vector<std::string> currs = CSVReader::tokenise(sale.product, '/');
    // ask
    if (sale.orderType == OrderBookType::asksale)
    {
        double outgoingAmount = sale.amount;
        std::string outgoingCurrency = currs[0];
        double incomingAmount = sale.amount * sale.price;
        std::string incomingCurrency = currs[1];

        currencies[incomingCurrency] += incomingAmount;
        currencies[outgoingCurrency] -= outgoingAmount;
    }
    // bid
    if (sale.orderType == OrderBookType::bidsale)
    {
        double incomingAmount = sale.amount;
        std::string incomingCurrency = currs[0];
        double outgoingAmount = sale.amount * sale.price;
        std::string outgoingCurrency = currs[1];

        currencies[incomingCurrency] += incomingAmount;
        currencies[outgoingCurrency] -= outgoingAmount;
    }
}