from __future__ import absolute_import
from __future__ import division, print_function, unicode_literals
from sumy.parsers.html import HtmlParser
from sumy.nlp.tokenizers import Tokenizer
from sumy.summarizers.lex_rank import LexRankSummarizer as Summarizer
from sumy.nlp.stemmers import Stemmer
from sumy.utils import get_stop_words
import sys


def summarize(url=None, LANGUAGE='English', SENTENCES_COUNT=2):
    parser = HtmlParser.from_url(url, Tokenizer(LANGUAGE))
    stemmer = Stemmer(LANGUAGE)
    summarizer = Summarizer(stemmer)
    summarizer.stop_words = get_stop_words(LANGUAGE)
    result = ''
    for sentence in summarizer(parser.document, SENTENCES_COUNT):
        result = result + ' ' + str(sentence)
        try:
            result = result + ' ' + str(sentence)

        except:
            print(
                    '\n\n Invalid Entry!, please Ensure you enter a valid web link \n\n')
            sys.stdout.flush()
            return (
                    '\n\n Invalid Entry!, please Ensure you enter a valid web link \n\n')
    print('\n\n'+str(url)+'\n\n'+str(result))
    sys.stdout.flush()
    return result