import re
import sys

try:
    import qutebrowser.api
    from qutebrowser.api import interceptor
    from qutebrowser.extensions.interceptors import Request
    from qutebrowser.qt.core import QUrl
    from qutebrowser.utils import debug, log
except ImportError:
    sys.stderr.write('qutebrowser not imported\n')
else:    
    # Block youtube ads
    def filter_yt(info: Request) -> None:
        """Block given request if necessary"""
        lYT_URLS = ( "www.youtube.com", "youtube.com", "youtu.be" )
        url = info.request_url
        if url.host() in lYT_URLS \
          and url.path() == "/get_video_info" \
          and "&adformat=" in url.query():
            log.network.info(f"Blocking to {url}")
            info.block()           
    interceptor.register(filter_yt)
    log.init.debug(f"loaded filter_yt interceptor")