from hazm import word_tokenize
from hazm import sent_tokenize
import re
import six

from normalizer import normalize

persian_regex = "0-9۰۱۲۳۴۵۶۷۸۹ءآئابتثجحخدذرزسشصضطظعغفقلمنهوپچژکگیە\u200c"


def filter_by_lang_regex(text, ratio=0.7, regex="0-9۰۱۲۳۴۵۶۷۸۹ءآئابتثجحخدذرزسشصضطظعغفقلمنهوپچژکگیە\u200c"):
    candidate_text = re.sub(r"[^" + regex + "]+", " ", six.ensure_str(text)).replace(" ", "")
    text = text.replace(" ", "")

    return True if (len(candidate_text) / len(text)) > ratio else False


def filter_by_num_tokens(text, gt=64):
    return True if len(word_tokenize(text)) > gt else False


def filter_by_num_sents(text, gt=2):
    return True if len(sent_tokenize(text)) > gt else False


def normalizer(text, do_lowercase=False):
    text = normalize(text)
    if do_lowercase:
        text = text.lower()

    return text