from calibre.web.feeds.news import BasicNewsRecipe, classes
from datetime import datetime
from calibre import browser
     
class HBR(BasicNewsRecipe):
    title = 'Harvard Business Review'
    __author__ = 'unkn0wn'
    description = 'Harvard Business Review is the leading destination for smart management thinking. Through its flagship magazine, books, and digital content and tools published on HBR.org, Harvard Business Review aims to provide professionals around the world with rigorous insights and best practices to help lead themselves and their organizations more effectively and to make a positive impact.'
    language = 'en_GB'
    use_embedded_content = False
    no_stylesheets = True
    remove_javascript = True
    masthead_url = 'http://hbr.org/resources/css/images/hbr_logo.svg'
    remove_attributes = ['height', 'width', 'style']
    encoding = 'utf-8'
    ignore_duplicate_articles = {'url'}
    extra_css = '''
        article-sidebar{ font-size:small; text-align:left; font-style:italic; }
        [close-caption]{ font-size:small; font-style:italic; text-align:center;}
        article-ideainbrief{ font-size:small; text-align:left; }
        '''
    
    keep_only_tags = [
        classes('headline-container pub-date hero-image-content article-summary article-body standard-content'),
        dict(name = 'article-sidebar'),
    ]

    remove_tags = [
        classes('left-rail--container translate-message follow-topic newsletter-container '),
    ]
        
    def parse_index(self):
        soup = self.index_to_soup('https://hbr.org/magazine')
        a = soup.find('a', href=lambda x: x and x.startswith('/archive-toc/'))
        url = a['href']
        self.log('Downloading issue:', url)
        cov_url = a.find('img', attrs={'src': True})['src']
        self.cover_url = 'https://hbr.org' + cov_url
        soup = self.index_to_soup('https://hbr.org' + url)
        ans = []
                
        for h3 in soup.findAll('h3', attrs={'class': 'hed'}):
            d = datetime.today()
            for a in h3.findAll('a', href=lambda x: x.startswith('/' + d.strftime('%Y') + '/')):
                ul = a['href']
                url = 'https://hbr.org' + ul
                title = self.tag_to_string(a)
                self.log(title, ' at ', url)
                ans.append({'title': title, 'url': url})
        return [('Articles', ans)]
    
    # Wired (HBR) changes the content it delivers based on cookies, so the
    # following ensures that we send no cookies
    def get_browser(self, *args, **kwargs):
        return self

    def clone_browser(self, *args, **kwargs):
        return self.get_browser()

    def open_novisit(self, *args, **kwargs):
        br = browser()
        return br.open_novisit(*args, **kwargs)

    open = open_novisit