OrderBook.h

#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 known 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);
		/** returns the prev timestep after the sent time in the order book, for getting previous timesteps values for compute average command*/
		std::string getPrevTime(std::string timestamp);


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


	private:
		std::vector<OrderBookEntry> orders;
};