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#/usr/bin/env python3
""" Automate the download of availlable manual.

    This script automates the download of manual for every languages availlable,
    from the specifyed server (see at the bottom of the script) as long as the
    server follows this tree:
        server_path/language/manual.zip

    To use it, you have to modify the server URL at the bottom of the script
    (variable "base_url"),
    and modify the last line of the script to tell which kind of manual it is
    ("installer" or "mcc")

    .. warning:: IT SHOULD NOT BE RUN IN THE GIT CLONE!!!
        
        To use the update script, you need a clean git clone, so you must not
        polluate it with the downloaded manuals

"""
from urllib.request import urlopen, urlretrieve
from urllib.error import HTTPError
from html.parser import HTMLParser


manual_name_prefix = {"installer": "DrakX-",
                      "MCC": "MCC-"}
manual_name_suffix = "WebHelp-zipped.zip"


def usage():
    print("python3 autodownlaod.py <manual> [<server_url>]")
    print("\t <manual>: MCC or installer")
    print("\t <server_url>: (optional) if not given: " +
          "http://docteam.mageia.nl/zipped/ will be used")

class ArchivePageHTMLParser(HTMLParser):
    def __init__(self):
        HTMLParser.__init__(self)
        self.recording = 0
        self.data = []

    def handle_data(self, data):
        if data.endswith('/'):
            self.data.append(data[:-1])

def getPage(url):
    parseur = ArchivePageHTMLParser()
    for word in urlopen(url).readlines():
        parseur.feed(word.strip().decode('ascii'))
    return parseur.data

def getZip(url, manual, lang):
    if lang == 'en' and manual == "mcc":
        filename = manual_name_prefix[manual] + \
                   manual_name_suffix
    else:
        filename = manual_name_prefix[manual] + \
                   lang.upper() + '-' + \
                   manual_name_suffix

    language_url = "/".join([url, lang, filename])
    print("\n%s" % lang)
    print(filename)
    print(language_url)
    try:
        urlretrieve(language_url, filename)
    except HTTPError as e:
        print(e)



if __name__ == "__main__":
    import sys
    if len(sys.argv) not in (2, 3):
        usage()
    else:
        # check manual
        manual = sys.argv[1]
        if manual not in manual_name_prefix.keys():
            usage()
        else:
            if len(sys.argv) == 3:
                base_url = sys.argv[2]
            else:
                base_url = "http://docteam.mageia.nl/zipped/"
            base_url = base_url + "/" + manual + "/"
            print(base_url)
            language_list = getPage(base_url)
            for elem in language_list:
                getZip(base_url, manual, elem)