#!/usr/bin/env python
# vim:fileencoding=utf-8
# License: GPLv3 Copyright: 2017, Kovid Goyal <kovid at kovidgoyal.net>
from calibre.web.feeds.news import BasicNewsRecipe


def classes(classes):
    q = frozenset(classes.split(' '))
    return dict(
        attrs={'class': lambda x: x and frozenset(x.split()).intersection(q)})


class LifeHacker(BasicNewsRecipe):
    title = u'LifeHacker'
    __author__ = 'Kovid Goyal'
    language = 'en'
    description = u'Tips, tricks, and downloads for getting things done.'
    publisher = u'lifehacker.com'
    oldest_article = 4
    max_articles_per_feed = 20
    summary_length = 1000

    remove_javascript = True
    no_stylesheets = True
    use_embedded_content = False
    remove_empty_feeds = True
    remove_attributes = ['style']

    keep_only_tags = [
        dict(name='h1'),
        classes('headline author post-content js_post-content'),
    ]
    remove_tags = [
        classes('magnifier commerce-inset gmg-avatar js_ad-dynamic instream-native-video inset--story js_commerce-inset-permalink'),
        dict(id='lifehacker-avatar-svg'),
        dict(name='aside'),
    ]
    remove_tags_after = classes('post-content')

    feeds = [(u'Articles', u'https://lifehacker.com/rss')]

    def preprocess_html(self, soup):

        def choose_from_srcset(raw):
            parts = raw.split()
            if len(parts) > 2:
                return parts[2]
            return parts[0]

        for img in soup.findAll(attrs={'data-srcset':True}):
            img['src'] = choose_from_srcset(img['data-srcset'])
        return soup
