define

type BalanceInfo struct {
	Balance float64
}

type CandleInfo struct {
	Exchange string
	Symbol   string
	BinSize  string
	Data     interface{}
}

type CandleName struct {
	Name    string
	BinSize string
}

type CandleParam struct {
	Start    time.Time
	End      time.Time
	Exchange string
	BinSize  string
	Symbol   string
}

type KlineMaker interface {
	GetName() string
	KlineChan(start, end time.Time, symbol, bSize string) (klines chan []interface{}, err chan error)
	WatchKline(symbols []SymbolInfo, datas chan *CandleInfo) error
}

type NotifyEvent struct {
	Type    string // text,markdown
	Content string
}

type Position struct {
	Symbol      string
	Type        int     // 合约类型，Long: 多头，Short: 空头
	Hold        float64 // 持有仓位
	Price       float64 //开仓价格
	ProfitRatio float64 // 盈利比例,正数表示盈利，负数表示亏岁
}

type RiskLimit struct {
	Code         string  // symbol info, empty = global
	Lever        float64 // lever
	MaxLostRatio float64 // max lose ratio
}

type RiskLimits map[string]RiskLimit

type SymbolInfo struct {
	ID          int64  `xorm:"pk autoincr null 'id'"`
	Exchange    string `xorm:"notnull unique(esr)  'exchange'"`
	Symbol      string `xorm:"notnull unique(esr) 'symbol'"`
	Resolutions string `xorm:"notnull unique(esr) 'resolutions'"`
	Pricescale  int    `xorm:"notnull 'pricescale'"`
}

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