Update app.py

app.py

@@ -5,6 +5,7 @@ from typing import List, Optional
 import datetime
 import json
 import os
+from pathlib import Path
 
 app = FastAPI()
 
@@ -25,8 +26,8 @@ class BackupRequest(BaseModel):
     phone: str
     messages: List[SMSMessage]
 
-# Storage directory
-DATA_DIR = "sms_data"
+# Use /tmp directory which has write permissions
+DATA_DIR = "/tmp/sms_data"
 os.makedirs(DATA_DIR, exist_ok=True)
 
 @app.post("/backup")
@@ -60,9 +61,9 @@ async def retrieve_sms(
     try:
         # Find all files for this phone number
         matching_files = []
-        for filename in os.listdir(DATA_DIR):
-            if filename.startswith(f"{phone}_"):
-                matching_files.append(filename)
+        for entry in os.scandir(DATA_DIR):
+            if entry.name.startswith(f"{phone}_") and entry.is_file():
+                matching_files.append(entry.path)
         
         if not matching_files:
             raise HTTPException(status_code=404, detail="No messages found for this phone number")
@@ -73,7 +74,7 @@ async def retrieve_sms(
         # Read all messages
         all_messages = []
         for filename in matching_files:
-            with open(f"{DATA_DIR}/{filename}", "r") as f:
+            with open(filename, "r") as f:
                 data = json.load(f)
                 all_messages.extend(data["messages"])
         
@@ -92,4 +93,9 @@ async def retrieve_sms(
 
 @app.get("/")
 async def health_check():
-    return {"status": "healthy", "timestamp": datetime.datetime.now().isoformat()}
+    return {
+        "status": "healthy",
+        "timestamp": datetime.datetime.now().isoformat(),
+        "storage_path": DATA_DIR,
+        "writable": os.access(DATA_DIR, os.W_OK)
+    }