import collections

import argparse

def pretty_print_queue(queue, queue_name="Queue"):

"""Pretty prints a queue with its contents and length."""

print(f"\n--- {queue_name} ---")

if not queue:

print("Queue is empty.")

else:

print("Contents:", list(queue))

print(f"Length: {len(queue)}")

print("------------------\n")

def main():

"""Main function to handle CLI arguments and queue operations."""

parser = argparse.ArgumentParser(description="Manage and view queues.")

parser.add_argument("queue_name", help="Name of the queue to manage.")

parser.add_argument("-a", "--add", help="Item to add to the queue.")

parser.add_argument("-d", "--delete", help="Item to delete from the queue.")

parser.add_argument("-v", "--view", action="store_true", help="View the queue.")

parser.add_argument("-q", "--quit", action="store_true", help="Quit the program.")

args = parser.parse_args()

queue = collections.deque() # Initialize an empty queue

if args.add:

queue.append(args.add)

print(f"Added '{args.add}' to the queue.")

elif args.delete:

try:

queue.remove(args.delete)

print(f"Removed '{args.delete}' from the queue.")

except ValueError:

print(f"'{args.delete}' not found in the queue.")

elif args.view:

pretty_print_queue(queue, args.queue_name)

elif args.quit:

print("Exiting...")

return

else:

print("Invalid arguments. Use -a/--add, -d/--delete, -v/--view, or -q/--quit.")

if __name__ == "__main__":

main()