#pragma once
#include "OrderBookEntry.h"
#include "CSVReader.h"
#include <string>
#include <vector>

class OrderBook
{
public:
    /** construct, reading a csv data file */
    OrderBook(std::string filename);
    /** return vector of all know products in the dataset*/
    std::vector<std::string> getKnownProducts();
    /** return vector of Orders according to the sent filters*/
    std::vector<OrderBookEntry> getOrders(OrderBookType type, std::string product, std::string timestamp);

    /** returns the earliest time in the orderbook*/
    std::string getEarliestTime();
    /** returns the next time after the 
         * sent time in the orderbook  
         * If there is no next timestamp, wraps around to the start
         * */
    std::string getNextTime(std::string timestamp);

    void insertOrder(OrderBookEntry& order);

    // Remove order from the order book
    void removeOrder(OrderBookEntry& order);

    std::vector<OrderBookEntry> matchAsksToBids(std::string product, std::string timestamp);

    static double getHighPrice(std::vector<OrderBookEntry> &orders);
    static double getLowPrice(std::vector<OrderBookEntry> &orders);

private:
    std::vector<OrderBookEntry> orders; // private variable which holds all loaded orders from the file
    std::vector<std::string> knownProducts;
};