Update app.py

app.py

@@ -151,13 +151,13 @@ def load_pdf(files, state):
         return "No file uploaded.", state, list(state["files"].keys())
 
     try:
-        # Deduplicate by file path
-        unique_files = list({f['name']: f for f in files}.values())
+        # Deduplicate file paths
+        unique_files = list(dict.fromkeys(files))
 
         for file in unique_files:
-            filename = os.path.basename(file['name'])  # FIX
+            filename = os.path.basename(file)  # FIX: file is a string path
 
-            text = read_pdf(file['name'])
+            text = read_pdf(file)
             new_chunks = chunk_text(text)
 
             if not new_chunks:
@@ -167,13 +167,14 @@ def load_pdf(files, state):
             state["chunks"].extend(new_chunks)
             state["pdf_count"] += 1
 
+        # Rebuild FAISS
         index, _ = build_vectorstore(state["chunks"])
         state["index"] = index
 
         return (
             f"{state['pdf_count']} PDF(s) loaded. Total chunks: {len(state['chunks'])}",
             state,
-            list(state["files"].keys())  # FIX: now contains real filenames
+            list(state["files"].keys())  # dropdown now works
         )
 
     except Exception as e:
@@ -182,7 +183,7 @@ def load_pdf(files, state):
             state,
             list(state["files"].keys())
         )
-
+        
 def remove_pdf(filename, state):
     if filename not in state["files"]:
         return f"{filename} not found.", state, list(state["files"].keys())