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bexchange's Issues

Doesn't fill orders

package main

import bx "github.com/bhomnick/bexchange"

func main() {
	actions := make(chan *bx.Action)
	done := make(chan bool)

	go bx.ConsoleActionHandler(actions, done)

	ob := bx.NewOrderBook(actions)

	id := uint64(1)
	sell := func(price uint32, amount uint32) {
		ob.AddOrder(bx.NewOrder(id, false, price, amount))
		id++
	}
	buy := func(price, amount uint32) {
		ob.AddOrder(bx.NewOrder(id, true, price, amount))
		id++
	}

	buy(200, 10)
	sell(150, 3)
	sell(150, 3)

	ob.Done()

	<-done
}

ID1 wants to buy 10 bananas by 200
ID2 wants to sell 3 bananas by 150
ID3 wants to sell 3 bananas by 150

Expected result: ID1 buys 3 bananas by 150 from ID2, closes ID2, buys 3 bananas by 150 from ID3, closes ID3

Actual output:

BUY - Order: 1, Amount: 10, Price: 200
SELL - Order: 2, Amount: 3, Price: 150
FILLED - Order: 2, Filled 3@200, From: 1
SELL - Order: 3, Amount: 3, Price: 150
DONE

It means that in current implementation ID1 buys 3 bananas from ID2 and that's all.

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