import os
import sys

def extract_seasons(file_path):
    seasons = set()
    
    with open(file_path, 'r', encoding='utf-8') as file:
        for line in file:
            line = line.strip()
            if not line:
                continue
            parts = line.split(os.sep)  # Split by OS-specific path separator
            if len(parts) >= 3:  # Expecting at least "./Show/Season XX/Episode.mkv"
                show = parts[1]  # Extract show name
                season = parts[2]  # Extract season directory
                seasons.add((show, season))
    
    # Sort seasons by show and season
    sorted_seasons = sorted(seasons, key=lambda x: (x[0], x[1]))
    
    return sorted_seasons

def main():
    if len(sys.argv) != 2:
        print("Usage: python script.py <file_path>")
        sys.exit(1)
    
    file_path = sys.argv[1]
    seasons = extract_seasons(file_path)
    
    for show, season in seasons:
        print(f"{show}: {season}")

if __name__ == "__main__":
    main()