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

backend/app/routers/datev.py

@@ -0,0 +1,78 @@
+"""DATEV export router: create exports, list exports, download CSV."""
+
+import uuid
+
+from fastapi import APIRouter, Depends, HTTPException, Query, status
+from fastapi.responses import Response
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.database import get_db
+from app.dependencies import get_current_user, get_pagination
+from app.models.user import User
+from app.schemas.datev import (
+    DATEVExportCreate,
+    DATEVExportListResponse,
+    DATEVExportResponse,
+)
+from app.services import datev_service
+
+router = APIRouter(prefix="/datev", tags=["datev"])
+
+
+@router.post("/export", response_model=DATEVExportResponse, status_code=status.HTTP_201_CREATED)
+async def create_export(
+    body: DATEVExportCreate,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    """Create a DATEV export for the given date range.
+
+    Queries all completed sales within the date range and generates a CSV file.
+    """
+    export = await datev_service.create_export(
+        db,
+        start_date=body.start_date,
+        end_date=body.end_date,
+    )
+    return DATEVExportResponse.model_validate(export)
+
+
+@router.get("/exports", response_model=DATEVExportListResponse, status_code=status.HTTP_200_OK)
+async def list_exports(
+    db: AsyncSession = Depends(get_db),
+    pagination: dict = Depends(get_pagination),
+    current_user: User = Depends(get_current_user),
+):
+    """List all DATEV exports with pagination."""
+    exports, total = await datev_service.list_exports(
+        db,
+        page=pagination["page"],
+        page_size=pagination["page_size"],
+    )
+    return DATEVExportListResponse(
+        items=[DATEVExportResponse.model_validate(e) for e in exports],
+        total=total,
+        page=pagination["page"],
+        page_size=pagination["page_size"],
+    )
+
+
+@router.get("/exports/{export_id}/download", status_code=status.HTTP_200_OK)
+async def download_export(
+    export_id: uuid.UUID,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    """Download a DATEV export as CSV file."""
+    result = await datev_service.get_export_csv(db, export_id)
+    if result is None:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail={"error": {"code": "EXPORT_NOT_FOUND", "message": "DATEV export not found"}},
+        )
+    filename, csv_bytes = result
+    return Response(
+        content=csv_bytes,
+        media_type="text/csv",
+        headers={"Content-Disposition": f'attachment; filename="{filename}"'},
+    )