Music-Downloader/sites/lalamus.py

from sites.default import DefaultSite
from sites.helper.query import Query


class Lalamus(DefaultSite):
    def __init__(self):
        super().__init__()
        self.url = 'https://wwc.lalamus.mobi'
        self.query = Query(self, 'FLAT', 'music')
        self.structure\
            .set_container_path('div.playlist-hash')\
            .set_item_path('table.song')\
            .set_title_path('td.title')\
            .set_duration_path('td.time') \
            .set_url_path('button.btn_download')
        self.request\
            .add_header('Referer', self.url + '/')\
            .add_header('Origin', self.url)\
            .add_header('Content-Type', 'application/x-www-form-urlencoded')

    def format_url(self, field):
        script = field.attr.onclick

        _start = 'openDL(\''
        _end = '\''

        start = script.find(_start)
        if start > -1:
            end = script.find(_end, start+len(_start))
            if end > -1 and end > start:
                return '{0}{1}'.format(self.url, script[start+len(_start):end])

        return None