迁移代码到Git

etl_billiards/models/validators.py

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+# -*- coding: utf-8 -*-
+"""数据验证器"""
+from decimal import Decimal
+
+class DataValidator:
+    """数据验证工具"""
+    
+    @staticmethod
+    def validate_positive_amount(value: Decimal | None, field_name: str = "amount"):
+        """验证金额为正数"""
+        if value is not None and value < 0:
+            raise ValueError(f"{field_name} 不能为负数: {value}")
+    
+    @staticmethod
+    def validate_required(value, field_name: str):
+        """验证必填字段"""
+        if value is None or value == "":
+            raise ValueError(f"{field_name} 是必填字段")
+    
+    @staticmethod
+    def validate_range(value, min_val, max_val, field_name: str):
+        """验证值范围"""
+        if value is not None:
+            if value < min_val or value > max_val:
+                raise ValueError(f"{field_name} 必须在 {min_val} 到 {max_val} 之间")