From fc0aa6cd5abdf2fd053b623c86c39b787bf51155 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=99=BD=E8=8C=B6=E6=B8=85=E6=AC=A2?=
 <go_developer@163.com>
Date: Tue, 19 Nov 2024 16:41:35 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E8=87=AA=E5=AE=9A=E4=B9=89Bi?=
 =?UTF-8?q?gInt=E7=B1=BB=E5=9E=8B?=
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---
 bigint.go | 118 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 bigint.go

diff --git a/bigint.go b/bigint.go
new file mode 100644
index 0000000..0aa4100
--- /dev/null
+++ b/bigint.go
@@ -0,0 +1,118 @@
+// Package wrapper ...
+//
+// Description : wrapper ...
+//
+// Author : go_developer@163.com<白茶清欢>
+//
+// Date : 2024-11-19 16:33
+package wrapper
+
+import (
+	"database/sql/driver"
+	"fmt"
+	"reflect"
+	"strconv"
+)
+
+// BigInt 是一个自定义类型，用于在JSON编码时将int64转换为字符串。
+// 建议只在Output中使用它，Input时直接使用int64。
+type BigInt string
+
+var EmptyBigInt BigInt = "0"
+
+func (f *BigInt) IsNil() bool {
+	if nil == f {
+		return true
+	}
+	return reflect.ValueOf(*f).IsNil()
+}
+
+// MarshalJSON 自定义的JSON编码逻辑。
+// @implements json.Marshaler
+func (f *BigInt) MarshalJSON() ([]byte, error) {
+	return []byte(fmt.Sprintf(`"%d"`, f.Int64())), nil
+}
+
+// ToString 返回BigId的字符串表示。
+func (f *BigInt) String() string {
+	if f.IsNil() {
+		return string(EmptyBigInt)
+	}
+	return string(*f)
+}
+
+// Value 在orm写入数据库时会调用它进行格式转换.
+// @implements database/sql/driver.Valuer
+func (f *BigInt) Value() (driver.Value, error) {
+	if f.IsNil() {
+		return 0, nil
+	}
+	return f.Uint64(), nil
+}
+
+// Int64 返回BigId的int64表示。
+// @implements github.com/gogf/gf/v2/util/gconv.iInt64
+func (f *BigInt) Int64() int64 {
+	if f.IsNil() {
+		return 0
+	}
+	i, err := strconv.ParseInt(string(*f), 10, 64)
+	if err != nil || i <= 0 {
+		return 0
+	}
+	return i
+}
+
+// Uint64 返回BigId的uint64表示。
+// @implements github.com/gogf/gf/v2/util/gconv.iUint64
+func (f *BigInt) Uint64() uint64 {
+	if f.IsNil() {
+		return 0
+	}
+	return uint64(f.Int64())
+}
+
+// IsEmpty 判断BigId是否为空
+func (f *BigInt) IsEmpty() bool {
+	if f.IsNil() {
+		return true
+	}
+	return *f == "" || *f == EmptyBigInt || f.Int64() == 0
+}
+
+// UnmarshalJSON converts a json byte array of a big ID into an BigInt type.
+// @implements json.Unmarshaler
+func (f *BigInt) UnmarshalJSON(b []byte) error {
+	var (
+		s = string(b)
+	)
+	// 如果是null，设置为0
+	if s == "null" || s == "" || s == "0" {
+		*f = EmptyBigInt
+		return nil
+	}
+	// 如果是字符串，去掉引号
+	if len(b) >= 3 && b[0] == '"' && b[len(b)-1] == '"' {
+		s = string(b[1 : len(b)-1])
+	}
+
+	*f = StrToBigInt(s)
+	return nil
+}
+
+// ToBigInt 将int转换为BigInt
+func ToBigInt(id int64) BigInt {
+	if id <= 0 {
+		return EmptyBigInt
+	}
+	return BigInt(fmt.Sprintf("%d", id))
+}
+
+// StrToBigInt 将str转换为BigInt类型
+func StrToBigInt(id string) BigInt {
+	i, err := strconv.ParseInt(id, 10, 64)
+	if err != nil || i <= 0 {
+		return EmptyBigInt
+	}
+	return BigInt(id)
+}