#    Copyright (C) 2014 Yahoo! Inc. All Rights Reserved.
#
#    Licensed under the Apache License, Version 2.0 (the "License"); you may
#    not use this file except in compliance with the License. You may obtain
#    a copy of the License at
#
#         http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#    License for the specific language governing permissions and limitations
#    under the License.

import inspect
import warnings

import debtcollector
from debtcollector.fixtures import disable
from debtcollector import moves
from debtcollector import removals
from debtcollector import renames
from debtcollector.tests import base as test_base
from debtcollector import updating


@renames.renamed_kwarg('blip', 'blop')
def blip_blop(blip=1, blop=1):
    return (blip, blop)


def blip_blop_unwrapped(blip=1, blop=1):
    return (blip, blop)


@renames.renamed_kwarg('blip', 'blop', category=PendingDeprecationWarning)
def blip_blop_2(blip=1, blop=1):
    return (blip, blop)


@renames.renamed_kwarg('blip', 'blop', replace=True)
def blip_blop_3(blop=1):
    return blop


@updating.updated_kwarg_default_value('type', 'cat', 'feline')
def blip_blop_blip(type='cat'):
    return "The %s meowed quietly" % type


def blip_blop_blip_unwrapped(type='cat'):
    return "The %s meowed quietly" % type


class WoofWoof(object):
    @property
    def bark(self):
        return 'woof'

    @property
    @moves.moved_property('bark')
    def burk(self):
        return self.bark

    @property
    @moves.moved_property('bark', category=PendingDeprecationWarning)
    def berk(self):
        return self.bark

    @removals.removed_kwarg('resp', message="Please use 'response' instead")
    @classmethod
    def factory(cls, resp=None, response=None):
        return 'super-duper'


class KittyKat(object):

    @moves.moved_method('supermeow')
    def meow(self, volume=11):
        return self.supermeow(volume)

    @moves.moved_method('supermeow', category=PendingDeprecationWarning)
    def maow(self, volume=11):
        return self.supermeow(volume)

    def supermeow(self, volume=11):
        return 'supermeow'


class Giraffe(object):
    color = 'orange'
    colour = moves.moved_read_only_property('colour', 'color')

    @property
    def height(self):
        return 2

    heightt = moves.moved_read_only_property('heightt', 'height')


class NewHotness(object):
    def hot(self):
        return 'cold'


@removals.remove()
def crimson_lightning(fake_input=None):
    return fake_input


def crimson_lightning_unwrapped(fake_input=None):
    return fake_input


@removals.remove(category=PendingDeprecationWarning)
def crimson_lightning_to_remove(fake_input=None):
    return fake_input


@removals.remove()
def red_comet():
    return True


@removals.remove(category=PendingDeprecationWarning)
def blue_comet():
    return True


def yellow_sun():
    """Yellow."""
    return True


yellowish_sun = moves.moved_function(yellow_sun, 'yellowish_sun', __name__)


@removals.remove()
class EFSF(object):
    pass


@removals.remove(category=PendingDeprecationWarning)
class EFSF_2(object):
    pass


@removals.removed_class("StarLord")
class StarLord(object):
    def __init__(self):
        self.name = "star"


class StarLordJr(StarLord):
    def __init__(self, name):
        super(StarLordJr, self).__init__()
        self.name = name


class ThingB(object):
    @removals.remove()
    def black_tristars(self):
        pass

    @removals.removed_property
    def green_tristars(self):
        return 'green'

    @green_tristars.setter
    def green_tristars(self, value):
        pass

    @green_tristars.deleter
    def green_tristars(self):
        pass

    @removals.removed_property(message="stop using me")
    def green_blue_tristars(self):
        return 'green-blue'

    @removals.remove(category=PendingDeprecationWarning)
    def blue_tristars(self):
        pass

    @removals.remove()
    @classmethod
    def white_wolf(cls):
        pass

    @removals.remove(category=PendingDeprecationWarning)
    @classmethod
    def yellow_wolf(cls):
        pass

    @removals.remove()
    @staticmethod
    def blue_giant():
        pass

    @removals.remove(category=PendingDeprecationWarning)
    @staticmethod
    def green_giant():
        pass


OldHotness = moves.moved_class(NewHotness, 'OldHotness', __name__)

OldHotness2 = moves.moved_class(NewHotness, 'OldHotness', __name__,
                                category=PendingDeprecationWarning)


class DeprecateAnythingTest(test_base.TestCase):
    def test_generation(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            debtcollector.deprecate("Its broken")
            debtcollector.deprecate("Its really broken")
        self.assertEqual(2, len(capture))


class MovedInheritableClassTest(test_base.TestCase):
    def test_broken_type_class(self):
        self.assertRaises(TypeError, moves.moved_class, 'b', __name__)

    def test_basics(self):
        old = OldHotness()
        self.assertIsInstance(old, NewHotness)
        self.assertEqual('cold', old.hot())

    def test_warnings_emitted_creation(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            OldHotness()
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(DeprecationWarning, w.category)

    def test_warnings_emitted_creation_pending(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            OldHotness2()
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(PendingDeprecationWarning, w.category)

    def test_existing_refer_subclass(self):

        class MyOldThing(OldHotness):
            pass

        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            MyOldThing()

        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(DeprecationWarning, w.category)


class MovedPropertyTest(test_base.TestCase):
    def test_basics(self):
        dog = WoofWoof()
        self.assertEqual('woof', dog.burk)
        self.assertEqual('woof', dog.bark)

    def test_readonly_move(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertEqual('orange', Giraffe.colour)
            g = Giraffe()
            self.assertEqual(2, g.heightt)
        self.assertEqual(2, len(capture))

    def test_warnings_emitted(self):
        dog = WoofWoof()
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertEqual('woof', dog.burk)
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(DeprecationWarning, w.category)

    def test_warnings_emitted_pending(self):
        dog = WoofWoof()
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertEqual('woof', dog.berk)
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(PendingDeprecationWarning, w.category)

    def test_warnings_not_emitted(self):
        dog = WoofWoof()
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertEqual('woof', dog.bark)
        self.assertEqual(0, len(capture))


class DisabledTest(test_base.TestCase):
    def test_basics(self):
        dog = WoofWoof()
        c = KittyKat()
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            with disable.DisableFixture():
                self.assertTrue(yellowish_sun())
                self.assertEqual('woof', dog.berk)
                self.assertEqual('supermeow', c.meow())
        self.assertEqual(0, len(capture))


class MovedFunctionTest(test_base.TestCase):
    def test_basics(self):
        self.assertTrue(yellowish_sun())
        self.assertTrue(yellow_sun())
        self.assertEqual("Yellow.", yellowish_sun.__doc__)

    def test_warnings_emitted(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertTrue(yellowish_sun())
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(DeprecationWarning, w.category)


class MovedMethodTest(test_base.TestCase):
    def test_basics(self):
        c = KittyKat()
        self.assertEqual('supermeow', c.meow())
        self.assertEqual('supermeow', c.supermeow())

    def test_warnings_emitted(self):
        c = KittyKat()
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertEqual('supermeow', c.meow())
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(DeprecationWarning, w.category)

    def test_warnings_emitted_pending(self):
        c = KittyKat()
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertEqual('supermeow', c.maow())
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(PendingDeprecationWarning, w.category)

    def test_warnings_not_emitted(self):
        c = KittyKat()
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertEqual('supermeow', c.supermeow())
        self.assertEqual(0, len(capture))

    def test_keeps_argspec(self):
        self.assertEqual(inspect.getfullargspec(KittyKat.supermeow),
                         inspect.getfullargspec(KittyKat.meow))


class RenamedKwargTest(test_base.TestCase):
    def test_basics(self):
        self.assertEqual((1, 1), blip_blop())
        self.assertEqual((2, 1), blip_blop(blip=2))
        self.assertEqual((1, 2), blip_blop(blop=2))
        self.assertEqual((2, 2), blip_blop(blip=2, blop=2))
        self.assertEqual(2, blip_blop_3(blip=2))
        self.assertEqual(2, blip_blop_3(blop=2))

    def test_warnings_emitted(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertEqual((2, 1), blip_blop(blip=2))
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(DeprecationWarning, w.category)
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertEqual(2, blip_blop_3(blip=2))
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(DeprecationWarning, w.category)

    def test_warnings_emitted_classmethod(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            WoofWoof.factory(resp="hi")
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(DeprecationWarning, w.category)
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            WoofWoof.factory(response="hi")
        self.assertEqual(0, len(capture))

    def test_warnings_emitted_pending(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertEqual((2, 1), blip_blop_2(blip=2))
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(PendingDeprecationWarning, w.category)

    def test_warnings_not_emitted(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertEqual((1, 2), blip_blop(blop=2))
        self.assertEqual(0, len(capture))
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertEqual(2, blip_blop_3(blop=2))
        self.assertEqual(0, len(capture))

    def test_argspec(self):
        # The decorated function keeps its argspec.
        self.assertEqual(inspect.getfullargspec(blip_blop_unwrapped),
                         inspect.getfullargspec(blip_blop))


class UpdatedArgsTest(test_base.TestCase):
    def test_basic(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertEqual('The cat meowed quietly', blip_blop_blip())
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(FutureWarning, w.category)

    def test_kwarg_set(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertEqual(
                'The kitten meowed quietly',
                blip_blop_blip(type='kitten'))
        self.assertEqual(0, len(capture))

    def test_argspec_preserved(self):
        self.assertEqual(inspect.getfullargspec(blip_blop_blip_unwrapped),
                         inspect.getfullargspec(blip_blop_blip))


class RemovalTests(test_base.TestCase):
    def test_function_args(self):
        self.assertEqual(666, crimson_lightning(666))

    def test_function_noargs(self):
        self.assertTrue(red_comet())

    def test_function_keeps_argspec(self):
        # The decorated function keeps its argspec.
        self.assertEqual(
            inspect.getfullargspec(crimson_lightning_unwrapped),
            inspect.getfullargspec(crimson_lightning))

    def test_deprecated_kwarg(self):

        @removals.removed_kwarg('b')
        def f(b=2):
            return b

        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertEqual(3, f(b=3))
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(DeprecationWarning, w.category)

        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertEqual(2, f())
        self.assertEqual(0, len(capture))

    def test_removed_kwarg_keeps_argspec(self):
        @removals.removed_kwarg('b')
        def f(b=2):
            return b

        def f_unwrapped(b=2):
            return b

        self.assertEqual(inspect.getfullargspec(f_unwrapped),
                         inspect.getfullargspec(f))

    def test_pending_deprecated_kwarg(self):

        @removals.removed_kwarg('b', category=PendingDeprecationWarning)
        def f(b=2):
            return b

        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertEqual(3, f(b=3))
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(PendingDeprecationWarning, w.category)

        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertEqual(2, f())
        self.assertEqual(0, len(capture))

    def test_warnings_emitted_property(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            o = ThingB()
            self.assertEqual('green', o.green_tristars)
            o.green_tristars = 'b'
            del o.green_tristars
        self.assertEqual(3, len(capture))
        w = capture[0]
        self.assertEqual(DeprecationWarning, w.category)

    def test_warnings_emitted_property_custom_message(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            o = ThingB()
            self.assertEqual('green-blue', o.green_blue_tristars)
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertIn('stop using me', str(w.message))
        self.assertEqual(DeprecationWarning, w.category)

    def test_warnings_emitted_function_args(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertEqual(666, crimson_lightning(666))
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(DeprecationWarning, w.category)

    def test_pending_warnings_emitted_function_args(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertEqual(666, crimson_lightning_to_remove(666))
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(PendingDeprecationWarning, w.category)

    def test_warnings_emitted_function_noargs(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertTrue(red_comet())
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(DeprecationWarning, w.category)

    def test_pending_warnings_emitted_function_noargs(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            self.assertTrue(blue_comet())
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(PendingDeprecationWarning, w.category)

    def test_warnings_emitted_class(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            EFSF()
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(DeprecationWarning, w.category)

    def test_pending_warnings_emitted_class(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            EFSF_2()
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(PendingDeprecationWarning, w.category)

    def test_pending_warnings_emitted_class_direct(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            s = StarLord()
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(DeprecationWarning, w.category)
        self.assertEqual("star", s.name)

    def test_pending_warnings_emitted_class_inherit(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            s = StarLordJr("star_jr")
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(DeprecationWarning, w.category)
        self.assertEqual("star_jr", s.name)

    def test_warnings_emitted_instancemethod(self):
        zeon = ThingB()
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            zeon.black_tristars()
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(DeprecationWarning, w.category)

    def test_pending_warnings_emitted_instancemethod(self):
        zeon = ThingB()
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            zeon.blue_tristars()
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(PendingDeprecationWarning, w.category)

    def test_pending_warnings_emitted_classmethod(self):
        zeon = ThingB()
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            zeon.yellow_wolf()
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(PendingDeprecationWarning, w.category)

    def test_warnings_emitted_classmethod(self):
        zeon = ThingB()
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            zeon.white_wolf()
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(DeprecationWarning, w.category)

    def test_warnings_emitted_staticmethod(self):
        zeon = ThingB()
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            zeon.blue_giant()
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(DeprecationWarning, w.category)

    def test_pending_warnings_emitted_staticmethod(self):
        zeon = ThingB()
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            zeon.green_giant()
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(PendingDeprecationWarning, w.category)

    def test_removed_module(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            removals.removed_module(__name__)
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(DeprecationWarning, w.category)

    def test_pending_removed_module(self):
        with warnings.catch_warnings(record=True) as capture:
            warnings.simplefilter("always")
            removals.removed_module(__name__,
                                    category=PendingDeprecationWarning)
        self.assertEqual(1, len(capture))
        w = capture[0]
        self.assertEqual(PendingDeprecationWarning, w.category)

    def test_removed_module_bad_type(self):
        self.assertRaises(TypeError, removals.removed_module, 2)