Duplicate File Finder and Deleter

This Python program helps you find duplicate files in a specified directory and delete them after previewing. It supports various file types, including images and text files, and provides a graphical interface for easy file selection and deletion.

Features

• Find Duplicate Files: Scans the selected directory for duplicate files based on their hash values (SHA-256).
• Progress Bar: Displays a progress bar during the scanning process.
• File Previews: Shows image previews for image files and text previews for text files, helping you review duplicates before deletion.
• Selectable Duplicates: Allows users to select which duplicate files to delete, with a "Select All" option for each group of duplicates.
• Cross-Platform Notifications: Sends a desktop notification when the scan is complete.
• Deletion Confirmation: Asks for confirmation before deleting selected duplicate files.
• Windows Beep: Plays a beep sound on Windows when the scan is finished.

Requirements

• Python 3.x
• tkinter for the graphical user interface
• Pillow (PIL) for image previews
• plyer for cross-platform notifications
• winsound for Windows beep sound
• concurrent.futures for parallelizing the file hashing process

To install the required packages, you can run the following commands:

pip install pillow plyer

Usage

1. Run the script, and it will prompt you to select a folder to scan for duplicates.
2. The program will scan the directory and calculate the hash values of each file.
3. After the scan is complete, a window will appear showing the duplicate files grouped by hash value.
4. You can select individual files to delete or use the "Select All" button to select all duplicates in a group.
5. When you're ready, click the "Delete Selected" button, and the program will confirm the deletion before proceeding.

How It Works

1. Hash Calculation: For each file in the selected directory, the program computes a SHA-256 hash to uniquely identify the file content.
2. Duplicate Detection: Files with the same hash value are considered duplicates.
3. File Deletion: Once duplicates are identified, you can choose which files to delete, and the program will delete the selected files.
4. Preview and Selection: Image files will be displayed as previews, and text files will show a portion of their contents for easier identification.

Functions

• calculate_hash(file_path, block_size): Computes the SHA-256 hash of a file.
• find_duplicates(directory, progress, progress_label): Scans the directory and identifies duplicate files, updating the progress bar.
• delete_selected_duplicates(duplicate_dict, selected_files): Deletes the selected duplicate files.
• duplicate_selection_gui(duplicate_dict): Displays the duplicate files in a GUI with options to select and delete them.
• main(): The main function that initializes the program and starts the duplicate file finding process.