拆分订单仓储模块

backend/internal/modules/order/utils.go

@@ -0,0 +1,55 @@
+package order
+
+import (
+	"crypto/rand"
+	"errors"
+	"strconv"
+
+	"gorm.io/gorm"
+	"hfb_sys/backend/internal/auditlog"
+	"hfb_sys/backend/internal/timeutil"
+)
+
+func firstNonEmpty(values ...string) string {
+	for _, value := range values {
+		if value != "" {
+			return value
+		}
+	}
+	return ""
+}
+
+func newOrderNo() (string, error) {
+	// 生成格式：RO + YYYYMMDDHHMMSS + 3位随机数
+	// 例如：RO20260603123456789
+	now := timeutil.ShanghaiNow()
+
+	// 时间部分：年月日时分秒 (14位)
+	timeStr := now.Format("20060102150405")
+
+	// 随机部分：3位数字 (000-999)
+	buf := make([]byte, 2)
+	if _, err := rand.Read(buf); err != nil {
+		return "", err
+	}
+	// 将2字节转为0-999的数字
+	randomNum := (int(buf[0])<<8 | int(buf[1])) % 1000
+
+	return "RO" + timeStr + strconv.Itoa(1000 + randomNum)[1:], nil
+}
+
+func appendAuditLog(tx *gorm.DB, actorID uint64, action string, bizType string, bizID uint64, meta AuditMeta, detail map[string]any) error {
+	return auditlog.Append(tx, auditlog.Entry{
+		ActorType: "admin",
+		ActorID:   actorID,
+		Action:    action,
+		BizType:   bizType,
+		BizID:     &bizID,
+		Meta:      meta,
+		Detail:    detail,
+	})
+}
+
+func IsNotFound(err error) bool {
+	return errors.Is(err, gorm.ErrRecordNotFound)
+}