import src.fw_api
from urllib.parse import unquote


def get_remote_file_name(url):
    '''This function return filename by content-disposition header'''
    r = src.fw_api.s.head(url)
    content_dispos = r.headers.get('content-disposition')
    if content_dispos.startswith('attachment; filename*=UTF-8\'\''):
        return unquote(content_dispos.split('attachment; filename*=UTF-8\'\'')[-1])


def download_track(url, name=None):
    url = url.split('?')[0] # Stripe all params from url
    r = src.fw_api.s.get(url)
    if not name:
        name = get_remote_file_name(url)
        if not name:
            name = url.split(r'/')[-1]

    with open(name.replace(r'/', '_'), 'wb') as f:
        f.write(r.content)
    return name