Better Error Handling and Code Reusability

[caseybarajas]

• Use a context manager for FTP connections: Ensure that the connection is properly closed even if an exception occurs.
• Remove hardcoded test file names: Use a temporary file or a unique name to avoid conflicts.
• Improve exception handling: Provide more specific exception handling and logging.
• Add input validation: Validate user inputs to avoid potential errors.
• Refactor repetitive code: Extract common code into helper functions to reduce redundancy.
• Add type hints: Improve code readability and maintainability by adding type hints.
• Use logging instead of print statements: This provides more flexibility and control over the output.