exchange

type Config interface {
	Get(string) interface{}
	GetBool(string) bool
	GetInt(string) int
	GetString(string) string
	UnmarshalKey(string, interface{}) error
}

type Exchange interface {
	Info() ExchangeInfo
	Symbols() ([]Symbol, error)

	Start() error
	Stop() error

	// Watch exchange event, call multiple times for different event
	Watch(WatchParam, WatchFn) error

	// Kline get klines
	GetKline(symbol, bSize string, start, end time.Time) (data []*Candle, err error)

	// for trade
	ProcessOrder(act TradeAction) (ret *Order, err error)
	CancelAllOrders() (orders []*Order, err error)
	CancelOrder(old *Order) (orders *Order, err error)
}

type ExchangeConfig struct {
	Type   string
	Key    string
	Secret string
	IsTest bool
}

type ExchangeInfo struct {
	Name       string
	Value      string
	Desc       string
	KLineLimit FetchLimit
	OrderLimit FetchLimit
}

type FetchLimit struct {
	Duration string
	Limit    int
}

type NewExchangeFn func(cfg Config, cltName string) (t Exchange, err error)

type ViperCfg struct {
	*viper.Viper
}

type WatchFn func(interface{})

type WatchParam struct {
	Type  string
	Param map[string]string
}