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WIP: feat: add symbol exchange info and basic method rules #7

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WIP: feat: add symbol exchange info and basic method rules #7

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151bc8d
feat: add symbol exchange info and basic method rules
rafaelbmateus Apr 20, 2022
a7a061c
Merge branch 'main' into symbol-exchange-info
rafaelbmateus Apr 22, 2022
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12 changes: 12 additions & 0 deletions binance/symbol.go
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,8 @@ import (
"fmt"
"math"
"strconv"

"github.com/adshao/go-binance/v2"
)

// SymbolBalance get available amount in user wallet.
Expand Down Expand Up @@ -42,3 +44,13 @@ func (me *Binance) SymbolPrice(symbol, buyWith, interval string) (float64, error

return symbolPrice, nil
}

// SymbolExchangeInfo get the last symbol price.
func (me *Binance) SymbolExchangeInfo(symbol string) (*binance.ExchangeInfo, error) {
res, err := me.Binance.NewExchangeInfoService().Symbol(symbol).Do(*me.Context)
if err != nil {
return nil, err
}

return res, nil
}
15 changes: 15 additions & 0 deletions bot/bot.go
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Original file line number Diff line number Diff line change
Expand Up @@ -168,6 +168,21 @@ func (me *Bot) sell(trade config.Trade, price float64) error {
return nil
}

// check rules before buy.
func (me *Bot) rules(trade *config.Trade) error {
exchange, err := me.Binance.SymbolExchangeInfo(trade.Symbol)
if err != nil {
return err
}

minNotional := exchange.Symbols[0].MinNotionalFilter().MinNotional
minQuantity := exchange.Symbols[0].LotSizeFilter().MinQuantity
me.Log.Debug().Msgf("[%s] minNotional=%.2f minQuantity=%.2f",
trade.Symbol, minNotional, minQuantity)

return nil
}

// format welcome message notification.
func (me *Bot) welcomeMessage(config config.Config) string {
msg := fmt.Sprintf("%s started! :money_mouth_face:\n\n", config.Name)
Expand Down