Fix calc of min tradable amount

tdex-network · Jan 17, 2023 · 836f496 · 836f496
1 parent 205162e
commit 836f496
Showing 1 changed file with 9 additions and 4 deletions.
diff --git a/internal/core/application/trade_service.go b/internal/core/application/trade_service.go
@@ -218,11 +218,16 @@ func (t *tradeService) GetMarketPrice(
 		return nil, 0, ErrServiceUnavailable
 	}
 	spotPrice := &price.QuotePrice
-	spotPricePrecision := calcPricePrecision(*spotPrice)
-	delta := int(spotPricePrecision) - int(mkt.QuoteAssetPrecision)
 	minAmount := uint64(mkt.FixedFee.BaseFee) + 1
-	if delta > 0 {
-		minAmount = uint64(math.Pow10(delta))
+	if minAmount == 1 {
+		if mkt.BaseAssetPrecision > mkt.QuoteAssetPrecision {
+			minAmountDec := price.BasePrice.Div(
+				decimal.NewFromFloat(math.Pow10(int(mkt.QuoteAssetPrecision))),
+			).Mul(decimal.NewFromFloat(math.Pow10(int(mkt.BaseAssetPrecision))))
+			if minAmountDec.GreaterThanOrEqual(decimal.NewFromInt(1)) {
+				minAmount = minAmountDec.BigInt().Uint64()
+			}
+		}
 	}
 	return spotPrice, minAmount, nil
 }