#!/usr/bin/env python
# -*- coding: utf-8 -*-

import datetime

from graphene.types import Scalar
from graphql.language import ast


class Date(Scalar):
    """Date Scalar Description"""

    @staticmethod
    def serialize(dt) -> str:
        return Date.to_str(dt)

    @staticmethod
    def parse_literal(node) -> datetime.datetime:
        if isinstance(node, ast.StringValue):
            return datetime.datetime.strptime(node.value, "%d-%m-%Y")

    @staticmethod
    def parse_value(value) -> datetime.datetime:
        return datetime.datetime.strptime(value, "%d-%m-%Y")

    @staticmethod
    def to_str(value) -> str:
        return value.strftime("%d-%m-%Y")