import re
from datetime import datetime
from functools import reduce
from time import time
from uuid import uuid4, UUID

import pytz as pytz
import shortuuid
from fastapi.requests import Request


def get_time() -> datetime:
    """
    Returns the current time.
    Returns:
    """
    return datetime.fromtimestamp(time(), tz=pytz.timezone('Asia/Tehran'))


def get_uuid() -> UUID:
    """Returns an unique UUID (UUID4)"""
    return uuid4()


def is_numeric(_input) -> bool:
    """Returns True if the input is a number."""
    try:
        val = int(_input)
        return True
    except ValueError:
        return False


def get_v_id(prefix: str, prefix_len=2, source_id: UUID = None) -> str:
    main_id = source_id if source_id is not None else uuid4()
    short_id = shortuuid.encode(main_id)
    return str(prefix)[0:prefix_len] + '.' + short_id[:7]


def get_qr_v_id(source_id: UUID = None) -> str:
    main_id = source_id if source_id is not None else uuid4()
    short_id = shortuuid.encode(main_id)
    return short_id[:8]


def is_valid_uuid(uuid_to_test, version=4):
    """
    Check if uuid_to_test is a valid UUID.

     Parameters
    ----------
    uuid_to_test : str
    version : {1, 2, 3, 4}

     Returns
    -------
    `True` if uuid_to_test is a valid UUID, otherwise `False`.

     Examples
    --------
    >>> is_valid_uuid('c9bf9e57-1685-4c89-bafb-ff5af830be8a')
    True
    >>> is_valid_uuid('c9bf9e58')
    False
    """

    try:
        uuid_obj = UUID(str(uuid_to_test), version=version)
    except ValueError:
        return False
    return str(uuid_obj) == str(uuid_to_test)


def get_base_url(request: Request) -> str:
    """
    Returns the base url of the request.

    Parameters
    ----------
    request : Request

    Returns
    -------
    str
    """
    return '{0}://{1}{2}/'.format(request.url.scheme,
                                  request.url.hostname,
                                  ':' + request.url.port.__str__() if request.url.port else '')


def p2e_numbers(input: str) -> str:
    """
    convert persian numbers to english numbers.
    """
    _map = {
        '۱': '1',
        '۲': '2',
        '۳': '3',
        '۴': '4',
        '۵': '5',
        '۶': '6',
        '۷': '7',
        '۸': '8',
        '۹': '9',
        '۰': '0'
    }
    a = map(lambda ch: _map[ch] if ch in _map else ch, input)
    return ''.join(list(a))


def is_list_of_strings(lst):
    return bool(lst) and isinstance(lst, list) and all(isinstance(elem, str) for elem in lst)


def smart_cast(_input):
    if is_numeric(_input):
        return int(_input)
    if is_valid_uuid(_input):
        return UUID(str(_input))
    return _input


def is_mobile_number(mobile: str):
    regex = r"^\+?[0-0][0-9]{10}$"
    if mobile and not re.search(regex, mobile, re.I):
        return False
    return True


def is_email(email: str):
    regex = r'\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b'
    if email and not re.search(regex, email, re.I):
        return False
    return True


def deep_get(dictionary, keys, default=None):
    return reduce(lambda d, key: d.get(key, default) if isinstance(d, dict) else default, keys.split("."), dictionary)


def get_tag_strips(tag_name: str, content: str):
    try:
        r_string = fr'\[{tag_name}\](.|\n)*?\[\/{tag_name}\]'
        matches = re.search(r_string, str(content), re.MULTILINE)
        raw = matches.group(0)
        raw = raw.replace(f'[{tag_name}]', '')
        raw = raw.replace(f'[/{tag_name}]', '')
        return raw
    except BaseException:
        return False