coincross

type Client interface {
	// Should return the balance of current account.
	Balance() (map[Symbol]float64, error)
	// Use with caution: this method is for real trading.
	Trade(tradeType TradeType, pair Pair, price, amount float64) (int64, error)
	// Cancel an active order.
	Cancel(orderId int64) (bool, error)
	// Returns active orders.
	Orders() ([]Order, error)
	// Returns the transaction history of current account.
	Transactions(limit int) ([]Transaction, error)

	// Returns the orderbook (or market depth) of the given pair.
	// Usually this is a public API.
	Orderbook(pair Pair, limit int) (*Orderbook, error)
	// Returns the trade history of the given pair, as well as a cursor for next since.
	// Usually this is a public API.
	History(pair Pair, since int64) ([]Trade, int64, error)
	// Returns the ticker of the given pair.
	// Usually this is a public API.
	Ticker(pair Pair) (*Ticker, error)

	// History streaming.
	Stream(pair Pair, since int64) *Streamer
}

type Order struct {
	Id             int64
	Timestamp      int64
	Type           TradeType
	Price          float64
	Remain, Amount float64
	Pair           Pair
}

type Orderbook struct {
	Asks, Bids []struct {
		Price, Amount float64
	}
}

type Pair struct {
	Base, Target Symbol
}

type Streamer struct {
	C       <-chan Trade
	Closing chan<- bool
}

type Symbol string

type Ticker struct {
	Buy, Sell, High, Low, Last, Volume float64
}

type Trade struct {
	Id        int64
	Timestamp int64
	Type      TradeType
	Price     float64
	Amount    float64
	Pair      Pair
}

type TradeError error

type TradeType int

type Transaction struct {
	Id          int64
	Timestamp   int64
	Amounts     map[Symbol]float64
	Descritpion string
}