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"""
 BTDigg (Videos, Music, Files)

 @website     https://btdig.com
 @provide-api yes (on demand)

 @using-api   no
 @results     HTML (using search portal)
 @stable      no (HTML can change)
 @parse       url, title, content, seed, leech, magnetlink
"""

from lxml import html
from operator import itemgetter
from urllib.parse import quote, urljoin
from searx.engines.xpath import extract_text
from searx.utils import get_torrent_size

# engine dependent config
categories = ['videos', 'music', 'files']
paging = True

# search-url
url = 'https://btdig.com'
search_url = url + '/search?q={search_term}&p={pageno}'


# do search-request
def request(query, params):
    params['url'] = search_url.format(search_term=quote(query),
                                      pageno=params['pageno'] - 1)

    return params


# get response from search-request
def response(resp):
    results = []

    dom = html.fromstring(resp.text)

    search_res = dom.xpath('//div[@class="one_result"]')

    # return empty array if nothing is found
    if not search_res:
        return []

    # parse results
    for result in search_res:
        link = result.xpath('.//div[@class="torrent_name"]//a')[0]
        href = urljoin(url, link.attrib.get('href'))
        title = extract_text(link)

        excerpt = result.xpath('.//div[@class="torrent_excerpt"]')[0]
        content = html.tostring(excerpt, encoding='unicode', method='text', with_tail=False)
        # it is better to emit <br/> instead of |, but html tags are verboten
        content = content.strip().replace('\n', ' | ')
        content = ' '.join(content.split())

        filesize = result.xpath('.//span[@class="torrent_size"]/text()')[0].split()[0]
        filesize_multiplier = result.xpath('.//span[@class="torrent_size"]/text()')[0].split()[1]
        files = (result.xpath('.//span[@class="torrent_files"]/text()') or ['1'])[0]

        # convert filesize to byte if possible
        filesize = get_torrent_size(filesize, filesize_multiplier)

        # convert files to int if possible
        try:
            files = int(files)
        except:
            files = None

        magnetlink = result.xpath('.//div[@class="torrent_magnet"]//a')[0].attrib['href']

        # append result
        results.append({'url': href,
                        'title': title,
                        'content': content,
                        'filesize': filesize,
                        'files': files,
                        'magnetlink': magnetlink,
                        'template': 'torrent.html'})

    # return results sorted by seeder
    return results