import pytest

import stix2

from .constants import FAKE_TIME


def test_identity_custom_property():
    with pytest.raises(ValueError) as excinfo:
        stix2.Identity(
            id="identity--311b2d2d-f010-5473-83ec-1edf84858f4c",
            created="2015-12-21T19:59:11Z",
            modified="2015-12-21T19:59:11Z",
            name="John Smith",
            identity_class="individual",
            custom_properties="foobar",
        )
    assert str(excinfo.value) == "'custom_properties' must be a dictionary"

    identity = stix2.Identity(
        id="identity--311b2d2d-f010-5473-83ec-1edf84858f4c",
        created="2015-12-21T19:59:11Z",
        modified="2015-12-21T19:59:11Z",
        name="John Smith",
        identity_class="individual",
        custom_properties={
            "foo": "bar",
        },
    )

    assert identity.foo == "bar"


def test_identity_custom_property_invalid():
    with pytest.raises(stix2.exceptions.ExtraPropertiesError) as excinfo:
        stix2.Identity(
            id="identity--311b2d2d-f010-5473-83ec-1edf84858f4c",
            created="2015-12-21T19:59:11Z",
            modified="2015-12-21T19:59:11Z",
            name="John Smith",
            identity_class="individual",
            x_foo="bar",
        )
    assert excinfo.value.cls == stix2.Identity
    assert excinfo.value.properties == ['x_foo']
    assert "Unexpected properties for" in str(excinfo.value)


def test_identity_custom_property_allowed():
    identity = stix2.Identity(
        id="identity--311b2d2d-f010-5473-83ec-1edf84858f4c",
        created="2015-12-21T19:59:11Z",
        modified="2015-12-21T19:59:11Z",
        name="John Smith",
        identity_class="individual",
        x_foo="bar",
        allow_custom=True,
    )
    assert identity.x_foo == "bar"


@pytest.mark.parametrize("data", [
    """{
        "type": "identity",
        "id": "identity--311b2d2d-f010-5473-83ec-1edf84858f4c",
        "created": "2015-12-21T19:59:11Z",
        "modified": "2015-12-21T19:59:11Z",
        "name": "John Smith",
        "identity_class": "individual",
        "foo": "bar"
    }""",
])
def test_parse_identity_custom_property(data):
    with pytest.raises(stix2.exceptions.ExtraPropertiesError) as excinfo:
        identity = stix2.parse(data)
    assert excinfo.value.cls == stix2.Identity
    assert excinfo.value.properties == ['foo']
    assert "Unexpected properties for" in str(excinfo.value)

    identity = stix2.parse(data, allow_custom=True)
    assert identity.foo == "bar"


@stix2.sdo.CustomObject('x-new-type', {
    'property1': stix2.properties.StringProperty(required=True),
    'property2': stix2.properties.IntegerProperty(),
})
class NewType():
    def __init__(self, property2=None, **kwargs):
        if property2 and property2 < 10:
            raise ValueError("'property2' is too small.")


def test_custom_object_type():
    nt = NewType(property1='something')
    assert nt.property1 == 'something'

    with pytest.raises(stix2.exceptions.MissingPropertiesError) as excinfo:
        NewType(property2=42)
    assert "No values for required properties" in str(excinfo.value)

    with pytest.raises(ValueError) as excinfo:
        NewType(property1='something', property2=4)
    assert "'property2' is too small." in str(excinfo.value)


def test_parse_custom_object_type():
    nt_string = """{
        "type": "x-new-type",
        "created": "2015-12-21T19:59:11Z",
        "property1": "something"
    }"""

    nt = stix2.parse(nt_string)
    assert nt.property1 == 'something'


@stix2.observables.CustomObservable('x-new-observable', {
    'property1': stix2.properties.StringProperty(required=True),
    'property2': stix2.properties.IntegerProperty(),
})
class NewObservable():
    def __init__(self, property2=None, **kwargs):
        if property2 and property2 < 10:
            raise ValueError("'property2' is too small.")


def test_custom_observable_object():
    no = NewObservable(property1='something')
    assert no.property1 == 'something'

    with pytest.raises(stix2.exceptions.MissingPropertiesError) as excinfo:
        NewObservable(property2=42)
    assert excinfo.value.properties == ['property1']
    assert "No values for required properties" in str(excinfo.value)

    with pytest.raises(ValueError) as excinfo:
        NewObservable(property1='something', property2=4)
    assert "'property2' is too small." in str(excinfo.value)


def test_parse_custom_observable_object():
    nt_string = """{
        "type": "x-new-observable",
        "property1": "something"
    }"""

    nt = stix2.parse_observable(nt_string)
    assert nt.property1 == 'something'


def test_parse_unregistered_custom_observable_object():
    nt_string = """{
        "type": "x-foobar-observable",
        "property1": "something"
    }"""

    with pytest.raises(stix2.exceptions.ParseError) as excinfo:
        stix2.parse_observable(nt_string)
    assert "Can't parse unknown observable type" in str(excinfo.value)


def test_parse_invalid_custom_observable_object():
    nt_string = """{
        "property1": "something"
    }"""

    with pytest.raises(stix2.exceptions.ParseError) as excinfo:
        stix2.parse_observable(nt_string)
    assert "Can't parse observable with no 'type' property" in str(excinfo.value)


def test_observable_custom_property():
    with pytest.raises(ValueError) as excinfo:
        NewObservable(
            property1='something',
            custom_properties="foobar",
        )
    assert "'custom_properties' must be a dictionary" in str(excinfo.value)

    no = NewObservable(
        property1='something',
        custom_properties={
            "foo": "bar",
        },
    )
    assert no.foo == "bar"


def test_observable_custom_property_invalid():
    with pytest.raises(stix2.exceptions.ExtraPropertiesError) as excinfo:
        NewObservable(
            property1='something',
            x_foo="bar",
        )
    assert excinfo.value.properties == ['x_foo']
    assert "Unexpected properties for" in str(excinfo.value)


def test_observable_custom_property_allowed():
    no = NewObservable(
        property1='something',
        x_foo="bar",
        allow_custom=True,
    )
    assert no.x_foo == "bar"


def test_observed_data_with_custom_observable_object():
    no = NewObservable(property1='something')
    ob_data = stix2.ObservedData(
        first_observed=FAKE_TIME,
        last_observed=FAKE_TIME,
        number_observed=1,
        objects={'0': no},
        allow_custom=True,
    )
    assert ob_data.objects['0'].property1 == 'something'


@stix2.observables.CustomExtension(stix2.DomainName, 'x-new-ext', {
    'property1': stix2.properties.StringProperty(required=True),
    'property2': stix2.properties.IntegerProperty(),
})
class NewExtension():
    def __init__(self, property2=None, **kwargs):
        if property2 and property2 < 10:
            raise ValueError("'property2' is too small.")


def test_custom_extension():
    ext = NewExtension(property1='something')
    assert ext.property1 == 'something'

    with pytest.raises(stix2.exceptions.MissingPropertiesError) as excinfo:
        NewExtension(property2=42)
    assert excinfo.value.properties == ['property1']
    assert str(excinfo.value) == "No values for required properties for _Custom: (property1)."

    with pytest.raises(ValueError) as excinfo:
        NewExtension(property1='something', property2=4)
    assert str(excinfo.value) == "'property2' is too small."


def test_custom_extension_wrong_observable_type():
    ext = NewExtension(property1='something')
    with pytest.raises(ValueError) as excinfo:
        stix2.File(name="abc.txt",
                   extensions={
                       "ntfs-ext": ext,
                   })

    assert 'Cannot determine extension type' in excinfo.value.reason


def test_custom_extension_invalid_observable():
    # These extensions are being applied to improperly-created Observables.
    # The Observable classes should have been created with the CustomObservable decorator.
    class Foo(object):
        pass
    with pytest.raises(ValueError) as excinfo:
        @stix2.observables.CustomExtension(Foo, 'x-new-ext', {
            'property1': stix2.properties.StringProperty(required=True),
        })
        class FooExtension():
            pass  # pragma: no cover
    assert str(excinfo.value) == "'observable' must be a valid Observable class!"

    class Bar(stix2.observables._Observable):
        pass
    with pytest.raises(ValueError) as excinfo:
        @stix2.observables.CustomExtension(Bar, 'x-new-ext', {
            'property1': stix2.properties.StringProperty(required=True),
        })
        class BarExtension():
            pass
    assert "Unknown observable type" in str(excinfo.value)
    assert "Custom observables must be created with the @CustomObservable decorator." in str(excinfo.value)

    class Baz(stix2.observables._Observable):
        _type = 'Baz'
    with pytest.raises(ValueError) as excinfo:
        @stix2.observables.CustomExtension(Baz, 'x-new-ext', {
            'property1': stix2.properties.StringProperty(required=True),
        })
        class BazExtension():
            pass
    assert "Unknown observable type" in str(excinfo.value)
    assert "Custom observables must be created with the @CustomObservable decorator." in str(excinfo.value)


def test_parse_observable_with_custom_extension():
    input_str = """{
        "type": "domain-name",
        "value": "example.com",
        "extensions": {
            "x-new-ext": {
                "property1": "foo",
                "property2": 12
            }
        }
    }"""

    parsed = stix2.parse_observable(input_str)
    assert parsed.extensions['x-new-ext'].property2 == 12


def test_parse_observable_with_unregistered_custom_extension():
    input_str = """{
        "type": "domain-name",
        "value": "example.com",
        "extensions": {
            "x-foobar-ext": {
                "property1": "foo",
                "property2": 12
            }
        }
    }"""

    with pytest.raises(ValueError) as excinfo:
        stix2.parse_observable(input_str)
    assert "Can't parse Unknown extension type" in str(excinfo.value)