# -*- coding: utf-8 -*-

import pytest

import os
import yaml
import dingguo
import difflib
import datetime

def get_figure_a():
    return dingguo.Figure(12.3, u'km')

def get_figure_b():
    return dingguo.Figure(12300, u'米')

def get_sum_a():
    return dingguo.Sum(1.23, u'EUR')

def get_sum_b():
    return dingguo.Sum(20.45, u'€')

def get_item_a():
    return dingguo.Item(
            name = u'item a',
            price_brutto = get_sum_a(),
            )

def get_item_b():
    return dingguo.Item(
            name = u'item β',
            price_brutto = get_sum_b(),
            )

def get_order_a():
    order = dingguo.Order(
            platform = u'platformπ',
            order_id = u'id',
            order_date = datetime.datetime(2016, 5, 8, 0, 18, 17),
            customer_id = u'customer',
            )
    order.items.append(get_item_a())
    order.items.append(get_item_b())
    return order

def to_yaml(data):
    return yaml.dump(data, default_flow_style = False, allow_unicode = True).decode('utf-8')

def yaml_diff(a, b):
    return '\n'.join(difflib.ndiff(
        to_yaml(a).split('\n'),
        to_yaml(b).split('\n'),
        ))

def test_figure_to_yaml():
    assert to_yaml(get_figure_a()) == u"""!figure
unit: km
value: 12.3
"""

def test_figure_to_yaml_unicode():
    assert to_yaml(get_figure_b()) == u"""!figure
unit: 米
value: 12300
"""

def test_figure_from_yaml():
    assert get_figure_a() == yaml.load(u"""!figure
unit: km
value: 12.3
""")

def test_figure_to_yaml_unicode():
    assert get_figure_b() == yaml.load(u"""!figure
unit: 米
value: 12300
""")

def test_sum_to_yaml_a():
    assert to_yaml(get_sum_a()) == u"!sum 'EUR 1.23'\n"

def test_sum_to_yaml_b():
    assert to_yaml(get_sum_b()) == u"!sum 'EUR 20.45'\n"

def test_sum_from_yaml_a():
    assert get_sum_a() == yaml.load(u"!sum EUR 1.23")

def test_sum_from_yaml_a_sign():
    assert get_sum_a() == yaml.load(u"!sum € 1.23")

def test_sum_from_yaml_a_quotes():
    assert get_sum_a() == yaml.load(u"!sum 'EUR 1.23'")

def test_item_to_yaml_a():
    assert to_yaml(get_item_a()) == u"""!item
name: item a
price_brutto: !sum 'EUR 1.23'
"""

def test_item_to_yaml_b():
    assert to_yaml(get_item_b()) == u"""!item
name: item β
price_brutto: !sum 'EUR 20.45'
"""

def test_item_from_yaml_a():
    assert get_item_a() == yaml.load(u"""!item
name: item a
price_brutto: !sum 'EUR 1.23'
""")

def test_item_from_yaml_b():
    assert get_item_b() == yaml.load(u"""!item
name: item β
price_brutto: !sum 'EUR 20.45'
""")

def test_order_to_yaml():
    assert to_yaml(get_order_a()) == u"""!order
customer_id: customer
discounts: []
items:
- !item
  name: item a
  price_brutto: !sum 'EUR 1.23'
- !item
  name: item β
  price_brutto: !sum 'EUR 20.45'
order_date: 2016-05-08
order_id: id
platform: platformπ
"""

def test_order_from_yaml():
    order_loaded = yaml.load(u"""!order
customer_id: customer
discounts: []
items:
- !item
  name: item a
  price_brutto: !sum 'EUR 1.23'
- !item
  name: item β
  price_brutto: !sum 'EUR 20.45'
order_date: 2016-05-08
order_id: id
platform: platformπ
""")
    order_expected = get_order_a()
    assert order_expected == order_loaded, yaml_diff(order_expected, order_loaded)