Fix: Simplify file upload logic and add manual processing button

app.py

@@ -58,54 +58,35 @@ if 'last_uploaded_file' not in st.session_state:
 # Enhanced file upload processing
 if uploaded_file is not None:
     try:
-        # Get file info
-        file_details = {
-            "filename": uploaded_file.name,
-            "size": uploaded_file.size,
-            "type": uploaded_file.type
-        }
+        st.sidebar.info("🔄 Processing uploaded file...")
         
-        st.sidebar.success(f"📁 **{file_details['filename']}** ({file_details['size']} bytes)")
+        # Read the file directly - simplified approach
+        df = pd.read_csv(uploaded_file)
         
-        # Process immediately if it's a new file
-        file_id = f"{file_details['filename']}_{file_details['size']}"
+        # Store in session state
+        st.session_state.uploaded_data_df = df
+        st.session_state.last_uploaded_file = uploaded_file.name
         
-        if 'current_file_id' not in st.session_state:
-            st.session_state.current_file_id = None
+        st.sidebar.success(f"✅ **File loaded successfully!**")
+        st.sidebar.success(f"📁 **{uploaded_file.name}** ({len(df)} rows, {len(df.columns)} columns)")
         
-        if st.session_state.current_file_id != file_id:
-            st.sidebar.info("🔄 Processing uploaded file...")
-            
-            try:
-                # Read the file
-                if uploaded_file.type == "text/csv" or uploaded_file.name.endswith('.csv'):
-                    df = pd.read_csv(uploaded_file)
-                else:
-                    # Try reading as CSV anyway
-                    df = pd.read_csv(uploaded_file)
-                
-                # Store in session state
-                st.session_state.uploaded_data_df = df
-                st.session_state.current_file_id = file_id
-                st.session_state.last_uploaded_file = uploaded_file.name
-                
-                st.sidebar.success(f"✅ **Successfully loaded!**")
-                st.sidebar.metric("📊 Dataset", f"{len(df)} rows × {len(df.columns)} cols")
-                
-            except Exception as e:
-                st.sidebar.error(f"❌ **Error:** {str(e)}")
-                st.sidebar.info("💡 Make sure your file is a valid CSV format")
-                st.session_state.uploaded_data_df = None
-        else:
-            st.sidebar.success("✅ **File already loaded**")
-            if st.session_state.uploaded_data_df is not None:
-                df = st.session_state.uploaded_data_df
-                st.sidebar.metric("📊 Current Dataset", f"{len(df)} rows × {len(df.columns)} cols")
-
     except Exception as e:
-        st.sidebar.error(f"❌ **Upload Error:** {str(e)}")
+        st.sidebar.error(f"❌ **Error reading file:** {str(e)}")
+        st.sidebar.info("💡 Make sure your file is a valid CSV format")
         st.session_state.uploaded_data_df = None
 
+# Manual processing button as backup
+if uploaded_file is not None and st.session_state.uploaded_data_df is None:
+    if st.sidebar.button("🔄 Process Uploaded File"):
+        try:
+            df = pd.read_csv(uploaded_file)
+            st.session_state.uploaded_data_df = df
+            st.session_state.last_uploaded_file = uploaded_file.name
+            st.sidebar.success("✅ File processed manually!")
+            st.rerun()
+        except Exception as e:
+            st.sidebar.error(f"❌ Error: {str(e)}")
+
 # Show current data status
 if st.session_state.uploaded_data_df is not None:
     st.sidebar.write(f"**Current Data:** {len(st.session_state.uploaded_data_df)} rows loaded")