utils/error.py

import logging 
from flask import render_template, request 
 
# Set up logging for errors 
logger = logging.getLogger(__name__) 
logger.setLevel(logging.ERROR) 
 
# File handler for logging errors to a file 
file_handler = logging.FileHandler('app_error.log') 
file_handler.setLevel(logging.ERROR) 
file_formatter = logging.Formatter('%(asctime)s %(levelname)s: %(message)s') 
file_handler.setFormatter(file_formatter) 
logger.addHandler(file_handler) 
 
# Console handler for logging errors to the terminal 
console_handler = logging.StreamHandler() 
console_handler.setLevel(logging.ERROR) 
console_formatter = logging.Formatter('%(asctime)s %(levelname)s: %(message)s') 
console_handler.setFormatter(console_formatter) 
logger.addHandler(console_handler) 
 
# 404 Error Handler 
def page_not_found(e): 
 logger.error(f"404 Error: {request.url}") 
 return render_template('404.html'), 404 
 
# 500 Error Handler 
def internal_server_error(e): 
 logger.error(f"500 Error: {e}, URL: {request.url}") 
 return render_template('500.html'), 500 
 
# File Not Found Error Handler 
def handle_file_not_found(): 
 logger.error("File not found.") 
 return render_template('error.html', message="The file you are looking for does not exist."), 404 
 
# Invalid File Type Error Handler 
def handle_invalid_file_type(): 
 logger.error("Invalid file type.") 
 return render_template('error.html', message="Invalid file type. Allowed types: pdf, docx, rsf, odt, png, jpg, jpeg."), 400 
 
# File Processing Error Handler 
def handle_file_processing_error(): 
 logger.error("File processing failed.") 
 return render_template('error.html', message="Failed to process the file."), 500