kind of a mess lol but file caching and front end

app/services/external_api/base_external_service.py

@@ -2,6 +2,11 @@ from typing import Any, Dict, Optional, Union
 import aiohttp
 import logging
 import json
+import csv
+import io
+from app.services.service_manager import ServiceManager
+from app.schemas.file import FileInDB
+from sqlalchemy.orm import Session
 
 logger = logging.getLogger(__name__)
 
@@ -10,6 +15,8 @@ class BaseExternalService:
         self.base_url = base_url
         self.api_key = api_key
         self.session = None
+        self.service_manager = ServiceManager()
+        self._services = {}
 
     async def _get_session(self) -> aiohttp.ClientSession:
         if self.session is None or self.session.closed:
@@ -73,4 +80,36 @@ class BaseExternalService:
         if self.session and not self.session.closed:
             await self.session.close()
             self.session = None
-            logger.info(f"Closed session for {self.__class__.__name__}") 
+            logger.info(f"Closed session for {self.__class__.__name__}")
+
+    def get_service(self, name: str) -> Any:
+        """Get a service by name with lazy loading"""
+        if name not in self._services:
+            self._services[name] = self.service_manager.get_service(name)
+        return self._services[name]
+
+    @property
+    def file_service(self):
+        """Convenience property for file service"""
+        return self.get_service('file')
+
+    async def save_file(self, db: Session, file_data: Union[bytes, list[dict]], file_name: str, subdir: str, file_type: Optional[str] = None) -> FileInDB:
+        """Save a file using the FileService"""
+        if isinstance(file_data, list):
+            # Convert list of dictionaries to CSV bytes
+            output = io.StringIO()
+            writer = csv.DictWriter(output, fieldnames=file_data[0].keys())
+            writer.writeheader()
+            writer.writerows(file_data)
+            file_data = output.getvalue().encode('utf-8')
+            file_type = file_type or 'text/csv'
+        
+        # Use FileService to save the file
+        file_service = self.get_service('file')
+        return await file_service.save_file(
+            db=db,
+            file_data=file_data,
+            filename=file_name,
+            subdir=subdir,
+            file_type=file_type
+        )