refactor: optimize backend module

domain/backup/api.py

@@ -0,0 +1,30 @@
+import datetime
+
+from fastapi import APIRouter, Depends, File, Request, UploadFile
+from fastapi.responses import JSONResponse
+
+from domain.audit import AuditAction, audit
+from domain.auth.service import get_current_active_user
+from domain.backup.service import BackupService
+
+router = APIRouter(
+    prefix="/api/backup",
+    tags=["Backup & Restore"],
+    dependencies=[Depends(get_current_active_user)],
+)
+
+
+@router.get("/export", summary="导出全站数据")
+@audit(action=AuditAction.DOWNLOAD, description="导出备份")
+async def export_backup(request: Request):
+    data = await BackupService.export_data()
+    timestamp = datetime.datetime.now().strftime("%Y-%m-%d_%H-%M-%S")
+    headers = {"Content-Disposition": f"attachment; filename=foxel_backup_{timestamp}.json"}
+    return JSONResponse(content=data.model_dump(), headers=headers)
+
+
+@router.post("/import", summary="导入数据")
+@audit(action=AuditAction.UPLOAD, description="导入备份")
+async def import_backup(request: Request, file: UploadFile = File(...)):
+    await BackupService.import_from_bytes(file.filename, await file.read())
+    return {"message": "数据导入成功。"}