Update app.py

app.py

@@ -7,32 +7,30 @@ from pdf2image import convert_from_path
 
 logging.basicConfig(level=logging.INFO)
 
-# Name of the default CSV file. It will be created if not found.
+# Name of the default CSV file. Ensure this file exists in your repository.
 DEFAULT_CSV = "default.csv"
-cwd = os.getcwd()
-logging.info(f"Working directory: {cwd}")
-
-if not os.path.isfile(DEFAULT_CSV):
-    logging.info(f"{DEFAULT_CSV} not found. Creating a default CSV file.")
-    with open(DEFAULT_CSV, "w") as f:
-        f.write("Name,Role,Reporting To\nAlice,CEO,\nBob,Manager,Alice\nCharlie,Engineer,Bob")
 
 def load_csv(file):
     """
-    If a valid file path is provided and it does not equal the working directory,
-    load that CSV. Otherwise, fall back to the default CSV.
+    Load a CSV file from the given file path.
+    If the file is missing, empty, or is a directory, load the default CSV.
     """
     cwd = os.getcwd()
     logging.info(f"load_csv received: {file}")
-    # If no file provided or file equals working directory, use default.
-    if not file or file.strip() == "" or os.path.abspath(file) == cwd:
+    
+    # If file is empty, None, or a directory, use the default CSV.
+    if not file or file.strip() == "" or os.path.isdir(file) or os.path.abspath(file) == cwd:
         logging.info("No valid file provided; using default CSV.")
-        return pd.read_csv(DEFAULT_CSV)
-    # If file exists and is not a directory, use it.
+        if os.path.isfile(DEFAULT_CSV):
+            return pd.read_csv(DEFAULT_CSV)
+        else:
+            raise FileNotFoundError("Default CSV not found.")
+    
+    # If the file exists and is not a directory, load it.
     if os.path.isfile(file):
         logging.info(f"Loading uploaded CSV: {file}")
         return pd.read_csv(file)
-    # Otherwise, warn and use default.
+    
     logging.warning(f"Provided file path '{file}' is not valid. Using default CSV.")
     return pd.read_csv(DEFAULT_CSV)