import wikipedia

#   wikipedia
#   ------------------------------------------------------------------------

def is_header(line):
    # return a couple of header_text and header_level
    # or return nothing if line is not a header

    line = line.strip()

    if line == '':
        return

    i = 0
    while line[i] == '=' and line[-1-i] == '=':
        i += 1

    if i == 0:
        return

    header_text = line[i:(-1-i)].strip()
    header_level = i
    return [header_text, header_level]


def get_wikipage(pagename, lang = "en"):
    # get wikipedia page content by name of the page

    wikipedia.set_lang(lang)

    print(pagename)
    
    try:
        results = wikipedia.search(pagename, results=1, suggestion=False)
        try:
            pagename = results[0]
        except IndexError:
            # if there is no suggestion or search results, the page doesn't exist
            raise wikipedia.PageError(pagename)
        return wikipedia.WikipediaPage(pagename, redirect=True, preload=True)
    except wikipedia.exceptions.DisambiguationError as e:
        print(e.options)
        page = ''

    return page