feat(T06): Verkaufsmodul + Rechtsdokumente + DATEV-Export + Sales UI

backend/app/schemas/datev.py

@@ -0,0 +1,44 @@
+"""Pydantic schemas for DATEV export request and response bodies."""
+
+import uuid
+from datetime import date, datetime
+from decimal import Decimal
+from typing import Optional
+
+from pydantic import BaseModel, ConfigDict, Field, model_validator
+
+
+class DATEVExportCreate(BaseModel):
+    """POST /api/v1/datev/export request body."""
+
+    start_date: date = Field(..., description="Start date of the export range")
+    end_date: date = Field(..., description="End date of the export range (inclusive)")
+
+    @model_validator(mode="after")
+    def validate_date_range(self) -> "DATEVExportCreate":
+        """Ensure start_date is not after end_date."""
+        if self.start_date > self.end_date:
+            raise ValueError("start_date must not be after end_date")
+        return self
+
+
+class DATEVExportResponse(BaseModel):
+    """DATEV export response schema."""
+
+    model_config = ConfigDict(from_attributes=True)
+
+    id: uuid.UUID
+    start_date: date
+    end_date: date
+    file_path: Optional[str] = None
+    total_amount: Decimal
+    created_at: Optional[datetime] = None
+
+
+class DATEVExportListResponse(BaseModel):
+    """Paginated DATEV export list response."""
+
+    items: list[DATEVExportResponse]
+    total: int
+    page: int
+    page_size: int