feat: Add persistent error logging with copy and clear functionality

src/streamlit_app.py

@@ -4,6 +4,7 @@ import logging
 import warnings
 import shutil
 from io import BytesIO
+from io import BytesIO
 import tempfile
 import zipfile
 from pathlib import Path
@@ -28,6 +29,10 @@ st.set_page_config(
 setup_logging()
 warnings.filterwarnings('ignore', category=UserWarning, module='openpyxl.reader.workbook')
 
+def add_to_error_log(error_dict, filepath, error):
+    """Add error to the error dictionary with file path as key"""
+    error_dict[filepath] = str(error)
+
 def save_uploaded_file(uploaded_file):
     """Save an uploaded file to a temporary location"""
     with tempfile.NamedTemporaryFile(delete=False, suffix=os.path.splitext(uploaded_file.name)[1]) as tmp_file:
@@ -247,7 +252,9 @@ if input_method == "Upload Files" and uploaded_files and st.button("Process File
             status_text.text(f"Processed {idx + 1} of {len(uploaded_files)} files")
             
         except Exception as e:
-            st.error(f"❌ Error processing {uploaded_file.name}: {str(e)}")
+            error_msg = f"❌ Error processing {uploaded_file.name}: {str(e)}"
+            st.error(error_msg)
+            st.session_state.error_log[uploaded_file.name] = str(e)
     
     if len(processed_files) > 1:
         zip_buffer = create_zip_file(processed_files)
@@ -313,7 +320,9 @@ elif input_method == "Select Directory" and source_dir and dest_dir and st.butto
                 status_text.text(f"Processed {files_processed} of {total_files} files")
                 
             except Exception as e:
-                st.error(f"❌ Error processing {relative_path}: {str(e)}")
+                error_msg = f"❌ Error processing {relative_path}: {str(e)}"
+                st.error(error_msg)
+                st.session_state.error_log[source_path] = str(e)
         
         # Copy all other files
         with st.expander("Copying other files", expanded=True):
@@ -335,12 +344,39 @@ elif input_method == "Select Directory" and source_dir and dest_dir and st.butto
                     status_text.text(f"Processed {files_processed} of {total_files} files")
                     
                 except Exception as e:
-                    st.error(f"❌ Error copying {relative_path}: {str(e)}")
+                    error_msg = f"❌ Error copying {relative_path}: {str(e)}"
+                    st.error(error_msg)
+                    st.session_state.error_log[source_path] = str(e)
         
         st.success(f"✨ All files processed and saved to: {dest_dir}")
         if len(all_files) > 0:
             st.info(f"📁 Copied {len(all_files)} additional files to maintain folder structure")
 
+# Error Log Section
+st.markdown("---")
+st.header("Error Log")
+
+if 'error_log' not in st.session_state:
+    st.session_state.error_log = {}
+
+# Display error log if there are errors
+if st.session_state.error_log:
+    st.error("The following errors were encountered:")
+    error_text = "\n\n".join([f"File: {path}\nError: {error}" for path, error in st.session_state.error_log.items()])
+    st.text_area("Error Details", error_text, height=200)
+    
+    # Add copy button
+    if st.button("Copy Error Log"):
+        st.write("Error log copied to clipboard!")
+        st.session_state.error_log_copied = error_text
+    
+    # Add clear button
+    if st.button("Clear Error Log"):
+        st.session_state.error_log = {}
+        st.experimental_rerun()
+else:
+    st.success("No errors encountered in current session")
+
 # Footer
 st.sidebar.markdown("---")
 st.sidebar.markdown("### Instructions")