Analogue Pocket Memories Cleaner

import os
import glob
from datetime import datetime

#This script will clean the Memories of your Analogue pocket.
#It groups the save states by game name and deletes all but the newest save state for every game.
#Place it on your SD Card inside the Save States folder (SD:/Memories/Save States/).

def process_files_in_directory(directory):
    # Get all .sta files in the directory
    all_files = glob.glob(os.path.join(directory, '*.sta'))

    # Group files by the characters after "USR_" in their filenames
    file_groups = {}
    for file in all_files:
        filename = os.path.basename(file)
        # Find the position of "USR_" in the filename
        usr_pos = filename.find("USR_")
        if usr_pos != -1:
            # Extract the characters after "USR_"
            key = filename[usr_pos + 4:] # 4 is the length of "USR_"
            if key not in file_groups:
                file_groups[key] = []
            file_groups[key].append(file)

    # For each group, delete all files except for the newest one
    for group in file_groups.values():
        if len(group) > 1: # Only proceed if there's more than one file in the group
            # Sort files by date modified, newest first
            sorted_files = sorted(group, key=lambda x: os.path.getmtime(x), reverse=True)
            # Keep the newest file and delete the rest
            for file in sorted_files[1:]:
                os.remove(file)
                print(f"Deleted: {file}")

current_folder = os.getcwd()

process_files_in_directory(current_folder)

for subdir in os.listdir(current_folder):
    subdir_path = os.path.join(current_folder, subdir)
    if os.path.isdir(subdir_path):
        process_files_in_directory(subdir_path)