迁移代码到Git

etl_billiards/models/parsers.py

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+# -*- coding: utf-8 -*-
+"""数据类型解析器"""
+from datetime import datetime
+from decimal import Decimal, ROUND_HALF_UP
+from dateutil import parser as dtparser
+from zoneinfo import ZoneInfo
+
+class TypeParser:
+    """类型解析工具"""
+    
+    @staticmethod
+    def parse_timestamp(s: str, tz: ZoneInfo) -> datetime | None:
+        """解析时间戳"""
+        if not s:
+            return None
+        try:
+            dt = dtparser.parse(s)
+            if dt.tzinfo is None:
+                return dt.replace(tzinfo=tz)
+            return dt.astimezone(tz)
+        except Exception:
+            return None
+    
+    @staticmethod
+    def parse_decimal(value, scale: int = 2) -> Decimal | None:
+        """解析金额"""
+        if value is None:
+            return None
+        try:
+            d = Decimal(str(value))
+            return d.quantize(Decimal(10) ** -scale, rounding=ROUND_HALF_UP)
+        except Exception:
+            return None
+    
+    @staticmethod
+    def parse_int(value) -> int | None:
+        """解析整数"""
+        if value is None:
+            return None
+        try:
+            return int(value)
+        except Exception:
+            return None
+    
+    @staticmethod
+    def format_timestamp(dt: datetime | None, tz: ZoneInfo) -> str | None:
+        """格式化时间戳"""
+        if not dt:
+            return None
+        return dt.astimezone(tz).strftime("%Y-%m-%d %H:%M:%S")