# flake8: noqa: E501

import re
from urllib.parse import parse_qs, quote as qs_quote


def get_user_agent():
    # TODO: randomize it
    return "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36"


def regex_search_string(regexes, string, default=None):
    if not isinstance(regexes, list):
        regexes = [regexes]
    for regex in regexes:
        match = re.match(regex, string)
        if match:
            return match
    return default


def dump_qs(obj):
    old_qs = []
    qs = []
    for key in obj:
        old_qs.append((key, obj[key]))
    not_flat = True
    while not_flat:
        not_flat = False
        for old_qs_element in old_qs:
            if isinstance(old_qs_element[1], (str, int, float)):
                qs.append((old_qs_element[0], old_qs_element[1]))
            elif isinstance(old_qs_element[1], (dict)):
                for subkey in old_qs_element[1]:
                    qs.append(
                        (old_qs_element[0] + "[" + subkey + "]", old_qs_element[1][subkey]))
                    if isinstance(old_qs_element[1][subkey], (dict, list)):
                        not_flat = True
            elif isinstance(old_qs_element[1], (list)):
                for index in range(len(old_qs_element[1])):
                    element = old_qs_element[1][index]
                    qs.append(
                        (old_qs_element[0] + "[" + str(index) + "]", element))
                    if isinstance(element, (dict, list)):
                        not_flat = True
        if not_flat:
            old_qs = qs
            qs = []
    strng = ""
    for el in qs:
        strng += qs_quote(str(el[0]), encoding="utf8") + "=" + \
            qs_quote(str(el[1]), encoding="utf8") + "&"
    return strng[:-1]