From fe3353bbb16016d0b8e0dae5eaac07845cd2f49a Mon Sep 17 00:00:00 2001
From: tgrziminiar <mixzazazaza1212@gmail.com>
Date: Fri, 20 Dec 2024 12:18:17 +0700
Subject: [PATCH] feat: method Scan, Value

---
 fixedpoint/fixedpoint.go | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/fixedpoint/fixedpoint.go b/fixedpoint/fixedpoint.go
index c2268ff..de54e09 100644
--- a/fixedpoint/fixedpoint.go
+++ b/fixedpoint/fixedpoint.go
@@ -2,6 +2,7 @@
 package fixedpoint
 
 import (
+	"database/sql/driver"
 	"math"
 	"math/big"
 	"strings"
@@ -414,3 +415,30 @@ func (f FixedPoint) IsOverPrecision(precision int) bool {
 	precisionCutoff := NewFromBigIntExp(big.NewInt(10), int32(-precision))
 	return f.Abs().Cmp(precisionCutoff) < 0
 }
+
+// Scan implements the sql.Scanner interface for database deserialization.
+func (f *FixedPoint) Scan(value interface{}) error {
+	if value == nil {
+		f.d.Valid = false
+		return nil
+	}
+
+	switch v := value.(type) {
+	case decimal.Decimal:
+		// Directly handle decimal.Decimal type
+		f.d.Decimal = v
+		f.d.Valid = true
+		return nil
+	default:
+		// Use the normal NullDecimal scan for other types
+		return f.d.Scan(value)
+	}
+}
+
+// Value implements the driver.Valuer interface for database serialization.
+func (f FixedPoint) Value() (driver.Value, error) {
+	if f.IsValid() {
+		return nil, nil
+	}
+	return f.d.Decimal.Value()
+}