#!/usr/bin/env python3

"""qbt_sum_size.py

Description:
Get the total size of all added torrents and the total size of all completed 
torrents from a qBittorrent instance.

Usage:
    qbt_sum_size.py (HOSTNAME) (USERNAME) (PASSWORD)
    qbt_sum_size.py -h

Examples:
    qbt_sum_size.py "http://localhost:8080" "admin" "adminadmin"
    qbt_sum_size.py "https://cat.seedhost.eu/lol/qbittorrent" "lol" "supersecretpassword"

Options:
    -h, --help      show this help message and exit
"""

from docopt import docopt
from qbittorrent import Client


# convert byte units
def human_bytes(bites: int) -> str:
    B = float(bites)
    KiB = float(1024)
    MiB = float(KiB**2)
    GiB = float(KiB**3)
    TiB = float(KiB**4)

    match B:
        case B if B < KiB:
            return "{0} {1}".format(B, "bytes" if 0 == B > 1 else "byte")
        case B if KiB <= B < MiB:
            return "{0:.2f} KiB".format(B / KiB)
        case B if MiB <= B < GiB:
            return "{0:.2f} MiB".format(B / MiB)
        case B if GiB <= B < TiB:
            return "{0:.2f} GiB".format(B / GiB)
        case B if TiB <= B:
            return "{0:.2f} TiB".format(B / TiB)
        case _:
            return ""


if __name__ == "__main__":
    args = docopt(__doc__)

    # Initialize client and login
    qb = Client(args["HOSTNAME"])
    qb.login(username=args["USERNAME"], password=args["PASSWORD"])

    # get total_completed_bytes
    completed_torrent_sizes = []
    for torrent in qb.torrents():
        if torrent["state"] == "queuedUP" or torrent["state"] == "pausedUP": # type: ignore
            completed_torrent_sizes.append(torrent["total_size"]) # type: ignore

    total_completed_bytes = sum(completed_torrent_sizes)

    # get total_added_bytes
    total_added_bytes = sum([torrent["total_size"] for torrent in torrents]) # type: ignore

    # print the results
    print(f"\nTotal completed size: {human_bytes(total_completed_bytes)}")
    print(f"Total added size: {human_bytes(total_added_bytes)}\n")