from django import forms
from py.test import raises

import graphene
from graphene import (
    String,
    Int,
    Boolean,
    Decimal,
    Float,
    ID,
    UUID,
    List,
    NonNull,
    DateTime,
    Date,
    Time,
)

from ..converter import convert_form_field


def assert_conversion(django_field, graphene_field, *args):
    field = django_field(*args, help_text="Custom Help Text")
    graphene_type = convert_form_field(field)
    assert isinstance(graphene_type, graphene_field)
    field = graphene_type.Field()
    assert field.description == "Custom Help Text"
    return field


def test_should_unknown_django_field_raise_exception():
    with raises(Exception) as excinfo:
        convert_form_field(None)
    assert "Don't know how to convert the Django form field" in str(excinfo.value)


def test_should_date_convert_date():
    assert_conversion(forms.DateField, Date)


def test_should_time_convert_time():
    assert_conversion(forms.TimeField, Time)


def test_should_date_time_convert_date_time():
    assert_conversion(forms.DateTimeField, DateTime)


def test_should_char_convert_string():
    assert_conversion(forms.CharField, String)


def test_should_email_convert_string():
    assert_conversion(forms.EmailField, String)


def test_should_slug_convert_string():
    assert_conversion(forms.SlugField, String)


def test_should_url_convert_string():
    assert_conversion(forms.URLField, String)


def test_should_choice_convert_string():
    assert_conversion(forms.ChoiceField, String)


def test_should_base_field_convert_string():
    assert_conversion(forms.Field, String)


def test_should_regex_convert_string():
    assert_conversion(forms.RegexField, String, "[0-9]+")


def test_should_uuid_convert_string():
    if hasattr(forms, "UUIDField"):
        assert_conversion(forms.UUIDField, UUID)


def test_should_integer_convert_int():
    assert_conversion(forms.IntegerField, Int)


def test_should_boolean_convert_boolean():
    field = assert_conversion(forms.BooleanField, Boolean)
    assert isinstance(field.type, NonNull)


def test_should_nullboolean_convert_boolean():
    field = assert_conversion(forms.NullBooleanField, Boolean)
    assert not isinstance(field.type, NonNull)


def test_should_float_convert_float():
    assert_conversion(forms.FloatField, Float)


def test_should_decimal_convert_decimal():
    assert_conversion(forms.DecimalField, Decimal)


def test_should_multiple_choice_convert_list():
    field = forms.MultipleChoiceField()
    graphene_type = convert_form_field(field)
    assert isinstance(graphene_type, List)
    assert graphene_type.of_type == String


def test_should_model_multiple_choice_convert_connectionorlist():
    field = forms.ModelMultipleChoiceField(queryset=None)
    graphene_type = convert_form_field(field)
    assert isinstance(graphene_type, List)
    assert graphene_type.of_type == ID


def test_should_manytoone_convert_connectionorlist():
    field = forms.ModelChoiceField(queryset=None)
    graphene_type = convert_form_field(field)
    assert isinstance(graphene_type, ID)