调整 字段顺序、名称

inventory_sync/specs.py

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 from dataclasses import dataclass
+from datetime import date
 
 
 PRIMARY_FIELD_NAME = "货品编码"
@@ -26,19 +27,28 @@ BRAND_SYNC_TARGETS = [
     BrandSyncTarget(brand_name="羽心堂", table_name="羽心堂"),
 ]
 
+
+def month_sales_field_name(month_offset: int, today: date | None = None) -> str:
+    current = today or date.today()
+    month_index = current.year * 12 + current.month - 1 - month_offset
+    year = month_index // 12
+    month = month_index % 12 + 1
+    return f"{year}{month:02d}销售数量"
+
+
 FIELD_SPECS = [
-    FieldSpec("品牌", "品牌名称", 1),
-    FieldSpec("分类", "一级分类", 1),
-    FieldSpec("产品类别", "货品简称", 1),
     FieldSpec("货品名称", "商品名称", 1),
+    FieldSpec("分类", "一级分类", 1),
     FieldSpec("条形码", "条形码", 1),
     FieldSpec("零售价", "零售价", 2, "0.00", 2),
     FieldSpec("店铺名称", "店铺名称", 1),
     FieldSpec("店铺可用库存", "店铺挂单量", 2, "0", 0),
     FieldSpec("总库存", "总库存", 2, "0", 0),
-    FieldSpec("本月销售数量", "本月销售数量", 2, "0", 0),
-    FieldSpec("上月销售数量", "上月销售数量", 2, "0", 0),
-    FieldSpec("上上月销售数量", "上上月销售数量", 2, "0", 0),
+    FieldSpec(month_sales_field_name(0), "本月销售数量", 2, "0", 0),
+    FieldSpec(month_sales_field_name(1), "上月销售数量", 2, "0", 0),
+    FieldSpec(month_sales_field_name(2), "上上月销售数量", 2, "0", 0),
+    FieldSpec("品牌", "品牌名称", 1),
+    FieldSpec("产品类别", "货品简称", 1),
 ]
 
 LEGACY_NAME_MAP = {
@@ -47,5 +57,8 @@ LEGACY_NAME_MAP = {
     "货品简称": "产品类别",
     "商品名称": "货品名称",
     "店铺挂单量": "店铺可用库存",
+    "本月销售数量": month_sales_field_name(0),
+    "上月销售数量": month_sales_field_name(1),
+    "上上月销售数量": month_sales_field_name(2),
     "统一规格编码": PRIMARY_FIELD_NAME,
 }