from collections import OrderedDict

from pytest import raises

from graphql import graphql
from graphql.error import format_error
from graphql.type import (
    GraphQLArgument,
    GraphQLBoolean,
    GraphQLEnumType,
    GraphQLEnumValue,
    GraphQLField,
    GraphQLFloat,
    GraphQLID,
    GraphQLInputObjectField,
    GraphQLInputObjectType,
    GraphQLInt,
    GraphQLInterfaceType,
    GraphQLList,
    GraphQLNonNull,
    GraphQLObjectType,
    GraphQLScalarType,
    GraphQLSchema,
    GraphQLString,
    GraphQLUnionType,
)
from graphql.type.directives import GraphQLDirective
from graphql.utils.build_client_schema import build_client_schema
from graphql.utils.introspection_query import introspection_query

from ...pyutils.contain_subset import contain_subset


def _test_schema(server_schema):
    initial_introspection = graphql(server_schema, introspection_query)
    client_schema = build_client_schema(initial_introspection.data)
    second_introspection = graphql(client_schema, introspection_query)
    assert contain_subset(
        initial_introspection.data, second_introspection.data
    ), "\n{}\n{}".format(initial_introspection.data, second_introspection.data)

    return client_schema


def test_it_builds_a_simple_schema():
    schema = GraphQLSchema(
        query=GraphQLObjectType(
            name="Simple",
            description="This is a simple type",
            fields={
                "string": GraphQLField(
                    GraphQLString, description="This is a string field"
                )
            },
        )
    )
    _test_schema(schema)


def test_builds_a_simple_schema_with_both_operation_types():
    QueryType = GraphQLObjectType(
        name="QueryType",
        description="This is a simple query type",
        fields={
            "string": GraphQLField(GraphQLString, description="This is a string field.")
        },
    )
    MutationType = GraphQLObjectType(
        name="MutationType",
        description="This is a simple mutation type",
        fields={
            "setString": GraphQLField(
                GraphQLString,
                description="Set the string field",
                args={"value": GraphQLArgument(GraphQLString)},
            )
        },
    )
    SubscriptionType = GraphQLObjectType(
        name="SubscriptionType",
        description="This is a simple subscription type",
        fields={
            "string": GraphQLField(
                type_=GraphQLString, description="This is a string field"
            )
        },
    )

    schema = GraphQLSchema(QueryType, MutationType, SubscriptionType)
    _test_schema(schema)


def test_uses_built_in_scalars_when_possible():
    customScalar = GraphQLScalarType(name="CustomScalar", serialize=lambda: None)

    schema = GraphQLSchema(
        query=GraphQLObjectType(
            name="Scalars",
            fields=OrderedDict(
                [
                    ("int", GraphQLField(GraphQLInt)),
                    ("float", GraphQLField(GraphQLFloat)),
                    ("string", GraphQLField(GraphQLString)),
                    ("boolean", GraphQLField(GraphQLBoolean)),
                    ("id", GraphQLField(GraphQLID)),
                    ("custom", GraphQLField(customScalar)),
                ]
            ),
        )
    )

    client_schema = _test_schema(schema)

    assert client_schema.get_type("Int") == GraphQLInt
    assert client_schema.get_type("Float") == GraphQLFloat
    assert client_schema.get_type("String") == GraphQLString
    assert client_schema.get_type("Boolean") == GraphQLBoolean
    assert client_schema.get_type("ID") == GraphQLID

    assert client_schema.get_type("CustomScalar") != customScalar


def test_builds_a_schema_with_a_recursive_type_reference():
    recurType = GraphQLObjectType(
        name="Recur", fields=lambda: {"recur": GraphQLField(recurType)}
    )

    schema = GraphQLSchema(query=recurType)
    _test_schema(schema)


def test_builds_a_schema_with_a_circular_type_reference():
    DogType = GraphQLObjectType(
        name="Dog", fields=lambda: {"bestFriend": GraphQLField(HumanType)}
    )

    HumanType = GraphQLObjectType(
        name="Human", fields=lambda: {"bestFriend": GraphQLField(DogType)}
    )

    schema = GraphQLSchema(
        query=GraphQLObjectType(
            name="Circular",
            fields=OrderedDict(
                [("dog", GraphQLField(DogType)), ("human", GraphQLField(HumanType))]
            ),
        )
    )

    _test_schema(schema)


def test_builds_a_schema_with_an_interface():
    FriendlyType = GraphQLInterfaceType(
        name="Friendly",
        resolve_type=lambda: None,
        fields=lambda: {
            "bestFriend": GraphQLField(
                FriendlyType, description="The best friend of this friendly thing."
            )
        },
    )

    DogType = GraphQLObjectType(
        name="DogType",
        interfaces=[FriendlyType],
        fields=lambda: {"bestFriend": GraphQLField(FriendlyType)},
    )

    HumanType = GraphQLObjectType(
        name="Human",
        interfaces=[FriendlyType],
        fields=lambda: {"bestFriend": GraphQLField(FriendlyType)},
    )

    schema = GraphQLSchema(
        query=GraphQLObjectType(
            name="WithInterface", fields={"friendly": GraphQLField(FriendlyType)}
        ),
        types=[DogType, HumanType],
    )

    _test_schema(schema)


def test_builds_a_schema_with_an_implicit_interface():
    FriendlyType = GraphQLInterfaceType(
        name="Friendly",
        resolve_type=lambda: None,
        fields=lambda: {
            "bestFriend": GraphQLField(
                FriendlyType, description="The best friend of this friendly thing."
            )
        },
    )

    DogType = GraphQLObjectType(
        name="DogType",
        interfaces=[FriendlyType],
        fields=lambda: {"bestFriend": GraphQLField(DogType)},
    )

    schema = GraphQLSchema(
        query=GraphQLObjectType(
            name="WithInterface", fields={"dog": GraphQLField(DogType)}
        )
    )

    _test_schema(schema)


def test_builds_a_schema_with_a_union():
    DogType = GraphQLObjectType(
        name="Dog", fields=lambda: {"bestFriend": GraphQLField(FriendlyType)}
    )

    HumanType = GraphQLObjectType(
        name="Human", fields=lambda: {"bestFriend": GraphQLField(FriendlyType)}
    )

    FriendlyType = GraphQLUnionType(
        name="Friendly", resolve_type=lambda: None, types=[DogType, HumanType]
    )

    schema = GraphQLSchema(
        query=GraphQLObjectType(
            name="WithUnion", fields={"friendly": GraphQLField(FriendlyType)}
        )
    )

    _test_schema(schema)


def test_builds_a_schema_with_complex_field_values():
    schema = GraphQLSchema(
        query=GraphQLObjectType(
            name="ComplexFields",
            fields=OrderedDict(
                [
                    ("string", GraphQLField(GraphQLString)),
                    ("listOfString", GraphQLField(GraphQLList(GraphQLString))),
                    ("nonNullString", GraphQLField(GraphQLNonNull(GraphQLString))),
                    (
                        "nonNullListOfString",
                        GraphQLField(GraphQLNonNull(GraphQLList(GraphQLString))),
                    ),
                    (
                        "nonNullListOfNonNullString",
                        GraphQLField(
                            GraphQLNonNull(GraphQLList(GraphQLNonNull(GraphQLString)))
                        ),
                    ),
                ]
            ),
        )
    )

    _test_schema(schema)


def test_builds_a_schema_with_field_arguments():
    schema = GraphQLSchema(
        query=GraphQLObjectType(
            name="ArgFields",
            fields=OrderedDict(
                [
                    (
                        "one",
                        GraphQLField(
                            GraphQLString,
                            description="A field with a single arg",
                            args={
                                "intArg": GraphQLArgument(
                                    GraphQLInt, description="This is an int arg"
                                )
                            },
                        ),
                    ),
                    (
                        "two",
                        GraphQLField(
                            GraphQLString,
                            description="A field with two args",
                            args=OrderedDict(
                                [
                                    (
                                        "listArg",
                                        GraphQLArgument(
                                            GraphQLList(GraphQLInt),
                                            description="This is a list of int arg",
                                        ),
                                    ),
                                    (
                                        "requiredArg",
                                        GraphQLArgument(
                                            GraphQLNonNull(GraphQLBoolean),
                                            description="This is a required arg",
                                        ),
                                    ),
                                ]
                            ),
                        ),
                    ),
                ]
            ),
        )
    )

    _test_schema(schema)


def test_builds_a_schema_with_an_enum():
    FoodEnum = GraphQLEnumType(
        name="Food",
        description="Varieties of food stuffs",
        values=OrderedDict(
            [
                (
                    "VEGETABLES",
                    GraphQLEnumValue(1, description="Foods that are vegetables."),
                ),
                ("FRUITS", GraphQLEnumValue(2, description="Foods that are fruits.")),
                ("OILS", GraphQLEnumValue(3, description="Foods that are oils.")),
                ("DAIRY", GraphQLEnumValue(4, description="Foods that are dairy.")),
                ("MEAT", GraphQLEnumValue(5, description="Foods that are meat.")),
            ]
        ),
    )

    schema = GraphQLSchema(
        query=GraphQLObjectType(
            name="EnumFields",
            fields={
                "food": GraphQLField(
                    FoodEnum,
                    description="Repeats the arg you give it",
                    args={
                        "kind": GraphQLArgument(
                            FoodEnum, description="what kind of food?"
                        )
                    },
                )
            },
        )
    )

    client_schema = _test_schema(schema)
    clientFoodEnum = client_schema.get_type("Food")
    assert isinstance(clientFoodEnum, GraphQLEnumType)

    assert clientFoodEnum.values == [
        GraphQLEnumValue(
            name="VEGETABLES",
            value="VEGETABLES",
            description="Foods that are vegetables.",
            deprecation_reason=None,
        ),
        GraphQLEnumValue(
            name="FRUITS",
            value="FRUITS",
            description="Foods that are fruits.",
            deprecation_reason=None,
        ),
        GraphQLEnumValue(
            name="OILS",
            value="OILS",
            description="Foods that are oils.",
            deprecation_reason=None,
        ),
        GraphQLEnumValue(
            name="DAIRY",
            value="DAIRY",
            description="Foods that are dairy.",
            deprecation_reason=None,
        ),
        GraphQLEnumValue(
            name="MEAT",
            value="MEAT",
            description="Foods that are meat.",
            deprecation_reason=None,
        ),
    ]


def test_builds_a_schema_with_an_input_object():
    AddressType = GraphQLInputObjectType(
        name="Address",
        description="An input address",
        fields=OrderedDict(
            [
                (
                    "street",
                    GraphQLInputObjectField(
                        GraphQLNonNull(GraphQLString),
                        description="What street is this address?",
                    ),
                ),
                (
                    "city",
                    GraphQLInputObjectField(
                        GraphQLNonNull(GraphQLString),
                        description="The city the address is within?",
                    ),
                ),
                (
                    "country",
                    GraphQLInputObjectField(
                        GraphQLString,
                        description="The country (blank will assume USA).",
                        default_value="USA",
                    ),
                ),
            ]
        ),
    )

    schema = GraphQLSchema(
        query=GraphQLObjectType(
            name="HasInputObjectFields",
            fields={
                "geocode": GraphQLField(
                    description="Get a geocode from an address",
                    type_=GraphQLString,
                    args={
                        "address": GraphQLArgument(
                            description="The address to lookup", type_=AddressType
                        )
                    },
                )
            },
        )
    )

    _test_schema(schema)


def test_builds_a_schema_with_field_arguments_with_default_values():
    GeoType = GraphQLInputObjectType(
        name="Geo",
        fields=OrderedDict(
            [
                ("lat", GraphQLInputObjectField(GraphQLFloat)),
                ("lon", GraphQLInputObjectField(GraphQLFloat)),
            ]
        ),
    )

    schema = GraphQLSchema(
        query=GraphQLObjectType(
            name="ArgFields",
            fields=OrderedDict(
                [
                    (
                        "defaultInt",
                        GraphQLField(
                            GraphQLString,
                            args={
                                "intArg": GraphQLArgument(GraphQLInt, default_value=10)
                            },
                        ),
                    ),
                    (
                        "defaultList",
                        GraphQLField(
                            GraphQLString,
                            args={
                                "listArg": GraphQLArgument(
                                    GraphQLList(GraphQLInt), default_value=[1, 2, 3]
                                )
                            },
                        ),
                    ),
                    (
                        "defaultObject",
                        GraphQLField(
                            GraphQLString,
                            args={
                                "objArg": GraphQLArgument(
                                    GeoType,
                                    default_value=OrderedDict(
                                        [("lat", 37.485), ("lon", -122.148)]
                                    ),
                                )
                            },
                        ),
                    ),
                ]
            ),
        )
    )

    _test_schema(schema)


def test_builds_a_schema_with_custom_directives():
    schema = GraphQLSchema(
        query=GraphQLObjectType(
            name="Simple",
            description="This is a simple type",
            fields={
                "string": GraphQLField(
                    type_=GraphQLString, description="This is a string field"
                )
            },
        ),
        directives=[
            GraphQLDirective(
                name="customDirective",
                description="This is a custom directive",
                locations=["FIELD"],
            )
        ],
    )

    _test_schema(schema)


def test_builds_a_schema_with_legacy_directives():
    old_introspection = {
        "__schema": {
            "queryType": {"name": "Simple"},
            "types": [
                {
                    "name": "Simple",
                    "kind": "OBJECT",
                    "fields": [
                        {"name": "simple", "args": [], "type": {"name": "Simple"}}
                    ],
                    "interfaces": [],
                }
            ],
            "directives": [
                {"name": "Old1", "args": [], "onField": True},
                {"name": "Old2", "args": [], "onFragment": True},
                {"name": "Old3", "args": [], "onOperation": True},
                {"name": "Old4", "args": [], "onField": True, "onFragment": True},
            ],
        }
    }

    new_introspection = {
        "__schema": {
            "directives": [
                {"name": "Old1", "args": [], "locations": ["FIELD"]},
                {
                    "name": "Old2",
                    "args": [],
                    "locations": [
                        "FRAGMENT_DEFINITION",
                        "FRAGMENT_SPREAD",
                        "INLINE_FRAGMENT",
                    ],
                },
                {
                    "name": "Old3",
                    "args": [],
                    "locations": ["QUERY", "MUTATION", "SUBSCRIPTION"],
                },
                {
                    "name": "Old4",
                    "args": [],
                    "locations": [
                        "FIELD",
                        "FRAGMENT_DEFINITION",
                        "FRAGMENT_SPREAD",
                        "INLINE_FRAGMENT",
                    ],
                },
            ]
        }
    }

    client_schema = build_client_schema(old_introspection)
    second_introspection = graphql(client_schema, introspection_query).data

    assert contain_subset(new_introspection, second_introspection)


def test_builds_a_schema_aware_of_deprecation():
    schema = GraphQLSchema(
        query=GraphQLObjectType(
            name="Simple",
            description="This is a simple type",
            fields=OrderedDict(
                [
                    (
                        "shinyString",
                        GraphQLField(
                            type_=GraphQLString,
                            description="This is a shiny string field",
                        ),
                    ),
                    (
                        "deprecatedString",
                        GraphQLField(
                            type_=GraphQLString,
                            description="This is a deprecated string field",
                            deprecation_reason="Use shinyString",
                        ),
                    ),
                    (
                        "color",
                        GraphQLField(
                            type_=GraphQLEnumType(
                                name="Color",
                                values=OrderedDict(
                                    [
                                        (
                                            "RED",
                                            GraphQLEnumValue(description="So rosy"),
                                        ),
                                        (
                                            "GREEN",
                                            GraphQLEnumValue(description="So grassy"),
                                        ),
                                        (
                                            "BLUE",
                                            GraphQLEnumValue(description="So calming"),
                                        ),
                                        (
                                            "MAUVE",
                                            GraphQLEnumValue(
                                                description="So sickening",
                                                deprecation_reason="No longer in fashion",
                                            ),
                                        ),
                                    ]
                                ),
                            )
                        ),
                    ),
                ]
            ),
        )
    )

    _test_schema(schema)


def test_cannot_use_client_schema_for_general_execution():
    customScalar = GraphQLScalarType(name="CustomScalar", serialize=lambda: None)

    schema = GraphQLSchema(
        query=GraphQLObjectType(
            name="Query",
            fields={
                "foo": GraphQLField(
                    GraphQLString,
                    args=OrderedDict(
                        [
                            ("custom1", GraphQLArgument(customScalar)),
                            ("custom2", GraphQLArgument(customScalar)),
                        ]
                    ),
                )
            },
        )
    )

    introspection = graphql(schema, introspection_query)
    client_schema = build_client_schema(introspection.data)

    class data:
        foo = "bar"

    result = graphql(
        client_schema,
        "query NoNo($v: CustomScalar) { foo(custom1: 123, custom2: $v) }",
        data,
        {"v": "baz"},
    )

    assert result.data == {"foo": None}
    assert [format_error(e) for e in result.errors] == [
        {
            "locations": [{"column": 32, "line": 1}],
            "message": "Client Schema cannot be used for execution.",
            "path": ["foo"],
        }
    ]


def test_throws_when_given_empty_types():
    incomplete_introspection = {
        "__schema": {"queryType": {"name": "QueryType"}, "types": []}
    }

    with raises(Exception) as excinfo:
        build_client_schema(incomplete_introspection)

    assert (
        str(excinfo.value)
        == "Invalid or incomplete schema, unknown type: QueryType. Ensure that a full "
        "introspection query is used in order to build a client schema."
    )


def test_throws_when_missing_kind():
    incomplete_introspection = {
        "__schema": {
            "queryType": {"name": "QueryType"},
            "types": [{"name": "QueryType"}],
        }
    }

    with raises(Exception) as excinfo:
        build_client_schema(incomplete_introspection)

    assert (
        str(excinfo.value)
        == "Invalid or incomplete schema, unknown kind: None. Ensure that a full "
        "introspection query is used in order to build a client schema."
    )


def test_succeeds_on_smaller_equals_than_7_deep_lists():
    schema = GraphQLSchema(
        query=GraphQLObjectType(
            name="Query",
            fields={
                "foo": GraphQLField(
                    GraphQLNonNull(
                        GraphQLList(
                            GraphQLNonNull(
                                GraphQLList(
                                    GraphQLNonNull(
                                        GraphQLList(GraphQLNonNull(GraphQLString))
                                    )
                                )
                            )
                        )
                    )
                )
            },
        )
    )

    introspection = graphql(schema, introspection_query)
    build_client_schema(introspection.data)


def test_fails_on_very_deep_lists():
    schema = GraphQLSchema(
        query=GraphQLObjectType(
            name="Query",
            fields={
                "foo": GraphQLField(
                    GraphQLList(
                        GraphQLList(
                            GraphQLList(
                                GraphQLList(
                                    GraphQLList(
                                        GraphQLList(
                                            GraphQLList(
                                                GraphQLList(GraphQLList(GraphQLString))
                                            )
                                        )
                                    )
                                )
                            )
                        )
                    )
                )
            },
        )
    )

    introspection = graphql(schema, introspection_query)

    with raises(Exception) as excinfo:
        build_client_schema(introspection.data)

    assert str(excinfo.value) == "Decorated type deeper than introspection query."


def test_fails_on_a_very_deep_non_null():
    schema = GraphQLSchema(
        query=GraphQLObjectType(
            name="Query",
            fields={
                "foo": GraphQLField(
                    GraphQLList(
                        GraphQLList(
                            GraphQLList(
                                GraphQLList(
                                    GraphQLList(
                                        GraphQLList(
                                            GraphQLList(
                                                GraphQLList(
                                                    GraphQLNonNull(GraphQLString)
                                                )
                                            )
                                        )
                                    )
                                )
                            )
                        )
                    )
                )
            },
        )
    )

    introspection = graphql(schema, introspection_query)

    with raises(Exception) as excinfo:
        build_client_schema(introspection.data)

    assert str(excinfo.value) == "Decorated type deeper than introspection query."
