#!/usr/bin/env python3

import os
import sys
import tempfile
from urllib.parse import urlparse

import requests
import click
from pura import clipboard


def url_filename(url: str) -> str:
    # get the basename of the path of the URL
    # ignoring any params/query/fragment
    f = os.path.basename(urlparse(url).path)
    if f.strip():
        return f
    return "image"


@click.command()
@click.argument("URL", default=clipboard.clippaste().strip())
def main(url) -> None:
    """
    \b
    downloads an image to your tmpdir, moves it so that the extension is valid
    prints the path its downloaded to and puts the path on your clipboard
    """
    if url == "":
        click.echo("No content on your clipboard!", err=True)
        sys.exit(1)

    # probably ran twice and the URL is already downloaded?
    # leave the path on my clipboard as is
    if not os.path.exists(url):
        r = requests.get(url, stream=True)
        assert r.status_code == 200

        tmpdir: str = tempfile.mkdtemp()
        write_to = os.path.join(tmpdir, url_filename(url))

        with open(write_to, "wb") as f:
            for chunk in r:
                f.write(chunk)

        clipboard.clipcopy(write_to)
        click.echo(write_to)


if __name__ == "__main__":
    main()