from flask import Blueprint
from calendar import timegm
from email.utils import formatdate
from functools import partial


api = Blueprint('api', __name__)


def truthy_bool(param):
  return param not in {False, 'false', 'False', '0', 'FALSE', '', 'null'}


def format_date(date):
  """ Output an RFC822 date format. """
  return formatdate(timegm(date.utctimetuple()))


def add_method_metadata(name, value):
  def modifier(func):
    if '__api_metadata' not in dir(func):
      func.__metadata = {}
    func.__metadata[name] = value
    return func
  return modifier


def method_metadata(func, name):
  if '__api_metadata' in dir(func):
    return func.__metadata.get(name, None)
  return None


nickname = partial(add_method_metadata, 'nickname')


import endpoints.api.legacy

import endpoints.api.repository
import endpoints.api.discovery