package fauxExchange;

class Trade{
	private int size;
	private double price;
	private BuyOrder buyOrder;
	private SellOrder sellOrder;
	private long time;
	private int tradeId;
	private static int lastTradeId = -1;

	synchronized static int getNextTradeId () { 
		lastTradeId++;
		return lastTradeId;
	}
	
	public Trade(Order order1, Order order2, double price, int size){
		if (order1 instanceof BuyOrder) {
			this.buyOrder = (BuyOrder)order1;
			this.sellOrder = (SellOrder)order2;
		}else{
			this.sellOrder = (SellOrder)order1;
			this.buyOrder = (BuyOrder)order2;
		}		

		this.price = price;	
		this.size = size;
		this.time = System.currentTimeMillis();
		this.tradeId = getNextTradeId();
	}
	
	/** Returns the order that was the selling order in this trade */
	public SellOrder getSellOrder(){
		return sellOrder;
	}
	
	/** Returns the order that bought in this trade */
	public BuyOrder getBuyOrder(){
		return buyOrder;
	}
	
	/** Returns the price at which this trade occured */
	public double getPrice(){
		return price;
	}
	
	/** Returns the size of this trade */
	public int getSize(){
		return size;
	}
	
	/** Returns the time the trade was executed */
	public long getTime(){
		return time;
	}
	
	void setTradeId(int id){
		this.tradeId = id;
	}
	
	public int getTradeId(){
		return this.tradeId;
	}
	
	/** Outputs this Trade to a PrintStream */
	public void print(java.io.PrintStream io){
		if (io == null) io = System.out;
		
		java.util.Date date = new java.util.Date(time);
		java.text.NumberFormat nf = java.text.NumberFormat.getCurrencyInstance();
		
		io.println("[" + date + "] Trade: Participant " + sellOrder.getParticipant() + " sold " + 
					size + " shares of " + sellOrder.getSecurityID() + " to Participant " + buyOrder.getParticipant() + " for " + nf.format(price) + " at " + new java.util.Date(time)); 
	}
	
	public static void main (String [] args){
		Order buy = new BuyOrder(100, 90.0, 10, false, 1029);
		Order sell = new SellOrder(200, 89.5, 11, false, 1029);
		Trade t = new Trade(buy, sell, 89.5, 100);
		t.print(null);
	}
}