import datetime

import pytest
from django.db import models
from django.utils.functional import SimpleLazyObject
from py.test import raises

import graphene
from graphene.relay import Node

from ..compat import MissingType, RangeField
from ..fields import DjangoConnectionField
from ..types import DjangoObjectType
from .models import Article, Reporter

pytestmark = pytest.mark.django_db


def test_should_query_only_fields():
    with raises(Exception):
        class ReporterType(DjangoObjectType):

            class Meta:
                model = Reporter
                only_fields = ('articles', )

        schema = graphene.Schema(query=ReporterType)
        query = '''
            query ReporterQuery {
              articles
            }
        '''
        result = schema.execute(query)
        assert not result.errors


def test_should_query_simplelazy_objects():
    class ReporterType(DjangoObjectType):

        class Meta:
            model = Reporter
            only_fields = ('id', )


    class Query(graphene.ObjectType):
        reporter = graphene.Field(ReporterType)

        def resolve_reporter(self, args, context, info):
            return SimpleLazyObject(lambda: Reporter(id=1))

    schema = graphene.Schema(query=Query)
    query = '''
        query {
          reporter {
            id
          }
        }
    '''
    result = schema.execute(query)
    assert not result.errors
    assert result.data == {
        'reporter': {
            'id': '1'
        }
    }


def test_should_query_well():
    class ReporterType(DjangoObjectType):

        class Meta:
            model = Reporter

    class Query(graphene.ObjectType):
        reporter = graphene.Field(ReporterType)

        def resolve_reporter(self, *args, **kwargs):
            return Reporter(first_name='ABA', last_name='X')

    query = '''
        query ReporterQuery {
          reporter {
            firstName,
            lastName,
            email
          }
        }
    '''
    expected = {
        'reporter': {
            'firstName': 'ABA',
            'lastName': 'X',
            'email': ''
        }
    }
    schema = graphene.Schema(query=Query)
    result = schema.execute(query)
    assert not result.errors
    assert result.data == expected


@pytest.mark.skipif(RangeField is MissingType,
                    reason="RangeField should exist")
def test_should_query_postgres_fields():
    from django.contrib.postgres.fields import IntegerRangeField, ArrayField, JSONField, HStoreField

    class Event(models.Model):
        ages = IntegerRangeField(help_text='The age ranges')
        data = JSONField(help_text='Data')
        store = HStoreField()
        tags = ArrayField(models.CharField(max_length=50))

    class EventType(DjangoObjectType):

        class Meta:
            model = Event

    class Query(graphene.ObjectType):
        event = graphene.Field(EventType)

        def resolve_event(self, *args, **kwargs):
            return Event(
                ages=(0, 10),
                data={'angry_babies': True},
                store={'h': 'store'},
                tags=['child', 'angry', 'babies']
            )

    schema = graphene.Schema(query=Query)
    query = '''
        query myQuery {
          event {
            ages
            tags
            data
            store
          }
        }
    '''
    expected = {
        'event': {
            'ages': [0, 10],
            'tags': ['child', 'angry', 'babies'],
            'data': '{"angry_babies": true}',
            'store': '{"h": "store"}',
        },
    }
    result = schema.execute(query)
    assert not result.errors
    assert result.data == expected


def test_should_node():
    # reset_global_registry()
    # Node._meta.registry = get_global_registry()

    class ReporterNode(DjangoObjectType):

        class Meta:
            model = Reporter
            interfaces = (Node, )

        @classmethod
        def get_node(cls, id, context, info):
            return Reporter(id=2, first_name='Cookie Monster')

        def resolve_articles(self, *args, **kwargs):
            return [Article(headline='Hi!')]

    class ArticleNode(DjangoObjectType):

        class Meta:
            model = Article
            interfaces = (Node, )

        @classmethod
        def get_node(cls, id, context, info):
            return Article(id=1, headline='Article node', pub_date=datetime.date(2002, 3, 11))

    class Query(graphene.ObjectType):
        node = Node.Field()
        reporter = graphene.Field(ReporterNode)
        article = graphene.Field(ArticleNode)

        def resolve_reporter(self, *args, **kwargs):
            return Reporter(id=1, first_name='ABA', last_name='X')

    query = '''
        query ReporterQuery {
          reporter {
            id,
            firstName,
            articles {
              edges {
                node {
                  headline
                }
              }
            }
            lastName,
            email
          }
          myArticle: node(id:"QXJ0aWNsZU5vZGU6MQ==") {
            id
            ... on ReporterNode {
                firstName
            }
            ... on ArticleNode {
                headline
                pubDate
            }
          }
        }
    '''
    expected = {
        'reporter': {
            'id': 'UmVwb3J0ZXJOb2RlOjE=',
            'firstName': 'ABA',
            'lastName': 'X',
            'email': '',
            'articles': {
                'edges': [{
                  'node': {
                      'headline': 'Hi!'
                  }
                }]
            },
        },
        'myArticle': {
            'id': 'QXJ0aWNsZU5vZGU6MQ==',
            'headline': 'Article node',
            'pubDate': '2002-03-11',
        }
    }
    schema = graphene.Schema(query=Query)
    result = schema.execute(query)
    assert not result.errors
    assert result.data == expected


def test_should_query_connectionfields():
    class ReporterType(DjangoObjectType):

        class Meta:
            model = Reporter
            interfaces = (Node, )
            only_fields = ('articles', )

    class Query(graphene.ObjectType):
        all_reporters = DjangoConnectionField(ReporterType)

        def resolve_all_reporters(self, args, context, info):
            return [Reporter(id=1)]

    schema = graphene.Schema(query=Query)
    query = '''
        query ReporterConnectionQuery {
          allReporters {
            pageInfo {
              hasNextPage
            }
            edges {
              node {
                id
              }
            }
          }
        }
    '''
    result = schema.execute(query)
    assert not result.errors
    assert result.data == {
        'allReporters': {
            'pageInfo': {
                'hasNextPage': False,
            },
            'edges': [{
                'node': {
                    'id': 'UmVwb3J0ZXJUeXBlOjE='
                }
            }]
        }
    }