# /// script
# dependencies = [
#   "qbittorrent-api",
#   "docopt",
# ]
# ///

"""list_torrents.py

Description:
Fetch a list of torrents from a qBittorrent instance running on localhost.
The qBittorrent instance must be configured to allow login on localhost
without authentication. The output is formatted into a plaintext table.

Usage:
    list_torrents.py
    list_torrents.py -h

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

import qbittorrentapi
from docopt import docopt


# convert byte units
def human_bytes(input_bytes: int) -> str:
    B = float(input_bytes)
    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 ""


def print_ssv():
    with qbittorrentapi.Client(
        host="localhost", port=8080, username="", password=""
    ) as qbt_client:
        try:
            qbt_client.auth_log_in()
        except qbittorrentapi.LoginFailed as e:
            print(e)

        sorted_torrents = sorted(
            qbt_client.torrents_info(), key=lambda d: d.ratio, reverse=True
        )
        for torrent in sorted_torrents:
            name = torrent.name
            size = human_bytes(torrent.total_size)
            trackers = torrent.trackers_count
            ratio = torrent.ratio
            uploaded = human_bytes(torrent.uploaded)
            print(f"{name}  {size}  {trackers}  {ratio}  {uploaded}")


if __name__ == "__main__":
    args = docopt(__doc__)  # type: ignore
    print_ssv()