# Copyright (c) 2014 TrilioData, Inc
# All Rights Reserved.

import re
import uuid
from workloadmgrclient import exceptions
from datetime import datetime


def validate_int_value(value, lower_bound, upper_bound=None, **kwargs):
    if isinstance(value, str):
        try:
            value = int(value)
        except ValueError:
            return False
    if value < lower_bound:
        return False
    if upper_bound and value > upper_bound:
        return False
    return True


def validate_uuid(id_val):
    """Check if id is valid UUID.
    Raises:
        InvalidUUIDException: Raise invalid uuid Exception.
    """
    try:
        uuid.UUID(id_val)
    except (ValueError, TypeError) as ex:
        raise exceptions.InvalidUUIDException("Invalid id : '{}'. Error: {}".format(id_val, ex))


def validate_date_value(value, date_formats):
    for i in date_formats:
        try:
            datetime.strptime(value, i)
            return True
        except (ValueError, TypeError) as ex:
            raise exceptions.InvalidDateException("Invalid date :{}. Should be passed in format {}".format(value, i))


def consume_quotes(string_value):
    if ("'") in string_value:
        return string_value.replace("'", "")
    elif ('"') in string_value:
        return string_value.replace('"', "")
    return string_value


def contains_number_and_hr(input_string):
    pattern = r'^\d+ ?hr$'
    match = re.search(pattern, input_string)
    if bool(match) is False:
        raise exceptions.InvalidIntervalException("Invalid interval value: {}. Should be a natural number followed by hr".format(input_string))


def retention_policy_type(input_string):
    if input_string.lower() not in ['number of snapshots to keep', 'number of days to retain snapshots']:
        raise exceptions.InvalidRetentionPolicyType("Invalid retention_policy_type {}. Should be 'Number of Snapshots to Keep' or 'Number of days to retain Snapshots'".format(input_string))