import argparse
import pyperclip
import re
import sys
import time

from voussoirkit import betterhelp
from voussoirkit import passwordy
from voussoirkit import pathclass
from voussoirkit import pipeable

def loop_once(extension, regex=None):
    try:
        text = pyperclip.paste()
    except Exception:
        return

    text = text.strip()

    if len(text.split(sep=None, maxsplit=1)) > 1:
        return

    if 'http://' not in text and 'https://' not in text:
        return

    if regex and not re.search(regex, text):
        return

    path = pathclass.Path(passwordy.random_hex(12)).add_extension(extension)
    pyperclip.copy('')
    pipeable.stdout(f'{path.basename} {text}')
    path.write('w', text, encoding='utf-8')

def loop_forever(extension, regex):
    pyperclip.copy('')
    while True:
        loop_once(extension=extension, regex=regex)
        time.sleep(1)

def watchforlinks_argparse(args):
    pipeable.stderr('Watching clipboard... Press Ctrl+C to stop.')
    try:
        loop_forever(extension=args.extension, regex=args.regex)
    except KeyboardInterrupt:
        pass
    return 0

def main(argv):
    parser = argparse.ArgumentParser(
        description='''
        This program will continuously watch your clipboard for http:// and
        https:// URLs and save them to individual files. The files will have
        randomly generated names. The current contents of your clipboard will
        be erased.
        ''',
    )

    parser.add_argument(
        'extension',
        nargs='?',
        type=str,
        default='generic',
        help='''
        The saved files will have this extension.
        ''',
    )
    parser.add_argument(
        '--regex',
        type=str,
        default=None,
        help='''
        A regex pattern. Only URLs that match this pattern will be saved.
        ''',
    )
    parser.set_defaults(func=watchforlinks_argparse)

    return betterhelp.go(parser, argv)

if __name__ == '__main__':
    raise SystemExit(main(sys.argv[1:]))