# -*- coding: utf-8 -*-
from __future__ import unicode_literals
import warnings

from django.contrib import admin
from django.contrib.admin.sites import AdminSite
from django.contrib.auth.models import User
from django.contrib.contenttypes.admin import GenericTabularInline
from django.contrib.contenttypes.forms import generic_inlineformset_factory
from django.forms.formsets import DEFAULT_MAX_NUM
from django.forms.models import ModelForm
from django.test import TestCase, override_settings, RequestFactory
from django.utils.deprecation import RemovedInDjango19Warning

# local test models
from .admin import MediaInline, MediaPermanentInline, site as admin_site
from .models import Episode, Media, EpisodePermanent, Category


@override_settings(PASSWORD_HASHERS=('django.contrib.auth.hashers.SHA1PasswordHasher',),
                   TEMPLATE_DEBUG=True,
                   ROOT_URLCONF="generic_inline_admin.urls")
class GenericAdminViewTest(TestCase):
    fixtures = ['users.xml']

    def setUp(self):
        # set TEMPLATE_DEBUG to True to ensure {% include %} will raise
        # exceptions since that is how inlines are rendered and #9498 will
        # bubble up if it is an issue.

        self.client.login(username='super', password='secret')

        # Can't load content via a fixture (since the GenericForeignKey
        # relies on content type IDs, which will vary depending on what
        # other tests have been run), thus we do it here.
        e = Episode.objects.create(name='This Week in Django')
        self.episode_pk = e.pk
        m = Media(content_object=e, url='http://example.com/podcast.mp3')
        m.save()
        self.mp3_media_pk = m.pk

        m = Media(content_object=e, url='http://example.com/logo.png')
        m.save()
        self.png_media_pk = m.pk

    def tearDown(self):
        self.client.logout()

    def test_basic_add_GET(self):
        """
        A smoke test to ensure GET on the add_view works.
        """
        response = self.client.get('/generic_inline_admin/admin/generic_inline_admin/episode/add/')
        self.assertEqual(response.status_code, 200)

    def test_basic_edit_GET(self):
        """
        A smoke test to ensure GET on the change_view works.
        """
        response = self.client.get('/generic_inline_admin/admin/generic_inline_admin/episode/%d/' % self.episode_pk)
        self.assertEqual(response.status_code, 200)

    def test_basic_add_POST(self):
        """
        A smoke test to ensure POST on add_view works.
        """
        post_data = {
            "name": "This Week in Django",
            # inline data
            "generic_inline_admin-media-content_type-object_id-TOTAL_FORMS": "1",
            "generic_inline_admin-media-content_type-object_id-INITIAL_FORMS": "0",
            "generic_inline_admin-media-content_type-object_id-MAX_NUM_FORMS": "0",
        }
        response = self.client.post('/generic_inline_admin/admin/generic_inline_admin/episode/add/', post_data)
        self.assertEqual(response.status_code, 302)  # redirect somewhere

    def test_basic_edit_POST(self):
        """
        A smoke test to ensure POST on edit_view works.
        """
        post_data = {
            "name": "This Week in Django",
            # inline data
            "generic_inline_admin-media-content_type-object_id-TOTAL_FORMS": "3",
            "generic_inline_admin-media-content_type-object_id-INITIAL_FORMS": "2",
            "generic_inline_admin-media-content_type-object_id-MAX_NUM_FORMS": "0",
            "generic_inline_admin-media-content_type-object_id-0-id": "%d" % self.mp3_media_pk,
            "generic_inline_admin-media-content_type-object_id-0-url": "http://example.com/podcast.mp3",
            "generic_inline_admin-media-content_type-object_id-1-id": "%d" % self.png_media_pk,
            "generic_inline_admin-media-content_type-object_id-1-url": "http://example.com/logo.png",
            "generic_inline_admin-media-content_type-object_id-2-id": "",
            "generic_inline_admin-media-content_type-object_id-2-url": "",
        }
        url = '/generic_inline_admin/admin/generic_inline_admin/episode/%d/' % self.episode_pk
        response = self.client.post(url, post_data)
        self.assertEqual(response.status_code, 302)  # redirect somewhere

    def test_generic_inline_formset(self):
        EpisodeMediaFormSet = generic_inlineformset_factory(Media, can_delete=False, exclude=['description', 'keywords'], extra=3)
        e = Episode.objects.get(name='This Week in Django')

        # Works with no queryset
        formset = EpisodeMediaFormSet(instance=e)
        self.assertEqual(len(formset.forms), 5)
        self.assertHTMLEqual(formset.forms[0].as_p(), '<p><label for="id_generic_inline_admin-media-content_type-object_id-0-url">Url:</label> <input id="id_generic_inline_admin-media-content_type-object_id-0-url" type="url" name="generic_inline_admin-media-content_type-object_id-0-url" value="http://example.com/podcast.mp3" maxlength="200" /><input type="hidden" name="generic_inline_admin-media-content_type-object_id-0-id" value="%s" id="id_generic_inline_admin-media-content_type-object_id-0-id" /></p>' % self.mp3_media_pk)
        self.assertHTMLEqual(formset.forms[1].as_p(), '<p><label for="id_generic_inline_admin-media-content_type-object_id-1-url">Url:</label> <input id="id_generic_inline_admin-media-content_type-object_id-1-url" type="url" name="generic_inline_admin-media-content_type-object_id-1-url" value="http://example.com/logo.png" maxlength="200" /><input type="hidden" name="generic_inline_admin-media-content_type-object_id-1-id" value="%s" id="id_generic_inline_admin-media-content_type-object_id-1-id" /></p>' % self.png_media_pk)
        self.assertHTMLEqual(formset.forms[2].as_p(), '<p><label for="id_generic_inline_admin-media-content_type-object_id-2-url">Url:</label> <input id="id_generic_inline_admin-media-content_type-object_id-2-url" type="url" name="generic_inline_admin-media-content_type-object_id-2-url" maxlength="200" /><input type="hidden" name="generic_inline_admin-media-content_type-object_id-2-id" id="id_generic_inline_admin-media-content_type-object_id-2-id" /></p>')

        # A queryset can be used to alter display ordering
        formset = EpisodeMediaFormSet(instance=e, queryset=Media.objects.order_by('url'))
        self.assertEqual(len(formset.forms), 5)
        self.assertHTMLEqual(formset.forms[0].as_p(), '<p><label for="id_generic_inline_admin-media-content_type-object_id-0-url">Url:</label> <input id="id_generic_inline_admin-media-content_type-object_id-0-url" type="url" name="generic_inline_admin-media-content_type-object_id-0-url" value="http://example.com/logo.png" maxlength="200" /><input type="hidden" name="generic_inline_admin-media-content_type-object_id-0-id" value="%s" id="id_generic_inline_admin-media-content_type-object_id-0-id" /></p>' % self.png_media_pk)
        self.assertHTMLEqual(formset.forms[1].as_p(), '<p><label for="id_generic_inline_admin-media-content_type-object_id-1-url">Url:</label> <input id="id_generic_inline_admin-media-content_type-object_id-1-url" type="url" name="generic_inline_admin-media-content_type-object_id-1-url" value="http://example.com/podcast.mp3" maxlength="200" /><input type="hidden" name="generic_inline_admin-media-content_type-object_id-1-id" value="%s" id="id_generic_inline_admin-media-content_type-object_id-1-id" /></p>' % self.mp3_media_pk)
        self.assertHTMLEqual(formset.forms[2].as_p(), '<p><label for="id_generic_inline_admin-media-content_type-object_id-2-url">Url:</label> <input id="id_generic_inline_admin-media-content_type-object_id-2-url" type="url" name="generic_inline_admin-media-content_type-object_id-2-url" maxlength="200" /><input type="hidden" name="generic_inline_admin-media-content_type-object_id-2-id" id="id_generic_inline_admin-media-content_type-object_id-2-id" /></p>')

        # Works with a queryset that omits items
        formset = EpisodeMediaFormSet(instance=e, queryset=Media.objects.filter(url__endswith=".png"))
        self.assertEqual(len(formset.forms), 4)
        self.assertHTMLEqual(formset.forms[0].as_p(), '<p><label for="id_generic_inline_admin-media-content_type-object_id-0-url">Url:</label> <input id="id_generic_inline_admin-media-content_type-object_id-0-url" type="url" name="generic_inline_admin-media-content_type-object_id-0-url" value="http://example.com/logo.png" maxlength="200" /><input type="hidden" name="generic_inline_admin-media-content_type-object_id-0-id" value="%s" id="id_generic_inline_admin-media-content_type-object_id-0-id" /></p>' % self.png_media_pk)
        self.assertHTMLEqual(formset.forms[1].as_p(), '<p><label for="id_generic_inline_admin-media-content_type-object_id-1-url">Url:</label> <input id="id_generic_inline_admin-media-content_type-object_id-1-url" type="url" name="generic_inline_admin-media-content_type-object_id-1-url" maxlength="200" /><input type="hidden" name="generic_inline_admin-media-content_type-object_id-1-id" id="id_generic_inline_admin-media-content_type-object_id-1-id" /></p>')

    def test_generic_inline_formset_factory(self):
        # Regression test for #10522.
        inline_formset = generic_inlineformset_factory(Media,
            exclude=('url',))

        # Regression test for #12340.
        e = Episode.objects.get(name='This Week in Django')
        formset = inline_formset(instance=e)
        self.assertTrue(formset.get_queryset().ordered)


@override_settings(PASSWORD_HASHERS=('django.contrib.auth.hashers.SHA1PasswordHasher',),
                   ROOT_URLCONF="generic_inline_admin.urls")
class GenericInlineAdminParametersTest(TestCase):
    fixtures = ['users.xml']

    def setUp(self):
        self.client.login(username='super', password='secret')
        self.factory = RequestFactory()

    def tearDown(self):
        self.client.logout()

    def _create_object(self, model):
        """
        Create a model with an attached Media object via GFK. We can't
        load content via a fixture (since the GenericForeignKey relies on
        content type IDs, which will vary depending on what other tests
        have been run), thus we do it here.
        """
        e = model.objects.create(name='This Week in Django')
        Media.objects.create(content_object=e, url='http://example.com/podcast.mp3')
        return e

    def test_no_param(self):
        """
        With one initial form, extra (default) at 3, there should be 4 forms.
        """
        e = self._create_object(Episode)
        response = self.client.get('/generic_inline_admin/admin/generic_inline_admin/episode/%s/' % e.pk)
        formset = response.context['inline_admin_formsets'][0].formset
        self.assertEqual(formset.total_form_count(), 4)
        self.assertEqual(formset.initial_form_count(), 1)

    def test_extra_param(self):
        """
        With extra=0, there should be one form.
        """
        class ExtraInline(GenericTabularInline):
            model = Media
            extra = 0

        modeladmin = admin.ModelAdmin(Episode, admin_site)
        modeladmin.inlines = [ExtraInline]

        e = self._create_object(Episode)
        request = self.factory.get('/generic_inline_admin/admin/generic_inline_admin/episode/%s/' % e.pk)
        request.user = User(username='super', is_superuser=True)
        response = modeladmin.changeform_view(request, object_id=str(e.pk))
        formset = response.context_data['inline_admin_formsets'][0].formset
        self.assertEqual(formset.total_form_count(), 1)
        self.assertEqual(formset.initial_form_count(), 1)

    def testMaxNumParam(self):
        """
        With extra=5 and max_num=2, there should be only 2 forms.
        """
        class MaxNumInline(GenericTabularInline):
            model = Media
            extra = 5
            max_num = 2

        modeladmin = admin.ModelAdmin(Episode, admin_site)
        modeladmin.inlines = [MaxNumInline]

        e = self._create_object(Episode)
        request = self.factory.get('/generic_inline_admin/admin/generic_inline_admin/episode/%s/' % e.pk)
        request.user = User(username='super', is_superuser=True)
        response = modeladmin.changeform_view(request, object_id=str(e.pk))
        formset = response.context_data['inline_admin_formsets'][0].formset
        self.assertEqual(formset.total_form_count(), 2)
        self.assertEqual(formset.initial_form_count(), 1)

    def test_min_num_param(self):
        """
        With extra=3 and min_num=2, there should be five forms.
        """
        class MinNumInline(GenericTabularInline):
            model = Media
            extra = 3
            min_num = 2

        modeladmin = admin.ModelAdmin(Episode, admin_site)
        modeladmin.inlines = [MinNumInline]

        e = self._create_object(Episode)
        request = self.factory.get('/generic_inline_admin/admin/generic_inline_admin/episode/%s/' % e.pk)
        request.user = User(username='super', is_superuser=True)
        response = modeladmin.changeform_view(request, object_id=str(e.pk))
        formset = response.context_data['inline_admin_formsets'][0].formset
        self.assertEqual(formset.total_form_count(), 5)
        self.assertEqual(formset.initial_form_count(), 1)


@override_settings(PASSWORD_HASHERS=('django.contrib.auth.hashers.SHA1PasswordHasher',),
                   ROOT_URLCONF="generic_inline_admin.urls")
class GenericInlineAdminWithUniqueTogetherTest(TestCase):
    fixtures = ['users.xml']

    def setUp(self):
        self.client.login(username='super', password='secret')

    def tearDown(self):
        self.client.logout()

    def test_add(self):
        category_id = Category.objects.create(name='male').pk
        post_data = {
            "name": "John Doe",
            # inline data
            "generic_inline_admin-phonenumber-content_type-object_id-TOTAL_FORMS": "1",
            "generic_inline_admin-phonenumber-content_type-object_id-INITIAL_FORMS": "0",
            "generic_inline_admin-phonenumber-content_type-object_id-MAX_NUM_FORMS": "0",
            "generic_inline_admin-phonenumber-content_type-object_id-0-id": "",
            "generic_inline_admin-phonenumber-content_type-object_id-0-phone_number": "555-555-5555",
            "generic_inline_admin-phonenumber-content_type-object_id-0-category": "%s" % category_id,
        }
        response = self.client.get('/generic_inline_admin/admin/generic_inline_admin/contact/add/')
        self.assertEqual(response.status_code, 200)
        response = self.client.post('/generic_inline_admin/admin/generic_inline_admin/contact/add/', post_data)
        self.assertEqual(response.status_code, 302)  # redirect somewhere


@override_settings(ROOT_URLCONF="generic_inline_admin.urls")
class NoInlineDeletionTest(TestCase):

    def test_no_deletion(self):
        fake_site = object()
        inline = MediaPermanentInline(EpisodePermanent, fake_site)
        fake_request = object()
        formset = inline.get_formset(fake_request)
        self.assertFalse(formset.can_delete)


class MockRequest(object):
    pass


class MockSuperUser(object):
    def has_perm(self, perm):
        return True

request = MockRequest()
request.user = MockSuperUser()


@override_settings(ROOT_URLCONF="generic_inline_admin.urls")
class GenericInlineModelAdminTest(TestCase):

    def setUp(self):
        self.site = AdminSite()

    def test_get_formset_kwargs(self):
        media_inline = MediaInline(Media, AdminSite())

        # Create a formset with default arguments
        formset = media_inline.get_formset(request)
        self.assertEqual(formset.max_num, DEFAULT_MAX_NUM)
        self.assertEqual(formset.can_order, False)

        # Create a formset with custom keyword arguments
        formset = media_inline.get_formset(request, max_num=100, can_order=True)
        self.assertEqual(formset.max_num, 100)
        self.assertEqual(formset.can_order, True)

    def test_custom_form_meta_exclude_with_readonly(self):
        """
        Ensure that the custom ModelForm's `Meta.exclude` is respected when
        used in conjunction with `GenericInlineModelAdmin.readonly_fields`
        and when no `ModelAdmin.exclude` is defined.
        """
        class MediaForm(ModelForm):

            class Meta:
                model = Media
                exclude = ['url']

        class MediaInline(GenericTabularInline):
            readonly_fields = ['description']
            form = MediaForm
            model = Media

        class EpisodeAdmin(admin.ModelAdmin):
            inlines = [
                MediaInline
            ]

        ma = EpisodeAdmin(Episode, self.site)
        self.assertEqual(
            list(list(ma.get_formsets_with_inlines(request))[0][0]().forms[0].fields),
            ['keywords', 'id', 'DELETE'])

    def test_custom_form_meta_exclude(self):
        """
        Ensure that the custom ModelForm's `Meta.exclude` is respected by
        `GenericInlineModelAdmin.get_formset`, and overridden if
        `ModelAdmin.exclude` or `GenericInlineModelAdmin.exclude` are defined.
        Refs #15907.
        """
        # First with `GenericInlineModelAdmin`  -----------------

        class MediaForm(ModelForm):

            class Meta:
                model = Media
                exclude = ['url']

        class MediaInline(GenericTabularInline):
            exclude = ['description']
            form = MediaForm
            model = Media

        class EpisodeAdmin(admin.ModelAdmin):
            inlines = [
                MediaInline
            ]

        ma = EpisodeAdmin(Episode, self.site)
        self.assertEqual(
            list(list(ma.get_formsets_with_inlines(request))[0][0]().forms[0].fields),
            ['url', 'keywords', 'id', 'DELETE'])

        # Then, only with `ModelForm`  -----------------

        class MediaInline(GenericTabularInline):
            form = MediaForm
            model = Media

        class EpisodeAdmin(admin.ModelAdmin):
            inlines = [
                MediaInline
            ]

        ma = EpisodeAdmin(Episode, self.site)
        self.assertEqual(
            list(list(ma.get_formsets_with_inlines(request))[0][0]().forms[0].fields),
            ['description', 'keywords', 'id', 'DELETE'])

    def test_get_fieldsets(self):
        # Test that get_fieldsets is called when figuring out form fields.
        # Refs #18681.
        class MediaForm(ModelForm):
            class Meta:
                model = Media
                fields = '__all__'

        class MediaInline(GenericTabularInline):
            form = MediaForm
            model = Media
            can_delete = False

            def get_fieldsets(self, request, obj=None):
                return [(None, {'fields': ['url', 'description']})]

        ma = MediaInline(Media, self.site)
        form = ma.get_formset(None).form
        self.assertEqual(form._meta.fields, ['url', 'description'])

    def test_get_formsets_with_inlines(self):
        """
        get_formsets() triggers a deprecation warning when get_formsets is
        overridden.
        """
        class MediaForm(ModelForm):
            class Meta:
                model = Media
                exclude = ['url']

        class MediaInline(GenericTabularInline):
            exclude = ['description']
            form = MediaForm
            model = Media

        class EpisodeAdmin(admin.ModelAdmin):
            inlines = [
                MediaInline
            ]

            def get_formsets(self, request, obj=None):
                return []

        with warnings.catch_warnings(record=True) as w:
            warnings.simplefilter("always")
            ma = EpisodeAdmin(Episode, self.site)
            list(ma.get_formsets_with_inlines(request))
            # Verify that the deprecation warning was triggered when get_formsets was called
            # This verifies that we called that method.
            self.assertEqual(len(w), 1)
            self.assertTrue(issubclass(w[0].category, RemovedInDjango19Warning))

        class EpisodeAdmin(admin.ModelAdmin):
            inlines = [
                MediaInline
            ]
        with warnings.catch_warnings(record=True) as w:
            warnings.simplefilter("always")
            ma = EpisodeAdmin(Episode, self.site)
            list(ma.get_formsets_with_inlines(request))
            self.assertEqual(len(w), 0)

    def test_get_formsets_with_inlines_returns_tuples(self):
        """
        Ensure that get_formsets_with_inlines() returns the correct tuples.
        """
        class MediaForm(ModelForm):
            class Meta:
                model = Media
                exclude = ['url']

        class MediaInline(GenericTabularInline):
            form = MediaForm
            model = Media

        class AlternateInline(GenericTabularInline):
            form = MediaForm
            model = Media

        class EpisodeAdmin(admin.ModelAdmin):
            inlines = [
                AlternateInline, MediaInline
            ]
        ma = EpisodeAdmin(Episode, self.site)
        inlines = ma.get_inline_instances(request)
        for (formset, inline), other_inline in zip(ma.get_formsets_with_inlines(request), inlines):
            self.assertIsInstance(formset, other_inline.get_formset(request).__class__)

        class EpisodeAdmin(admin.ModelAdmin):
            inlines = [
                AlternateInline, MediaInline
            ]

            def get_formsets(self, request, obj=None):
                # Catch the deprecation warning to force the usage of get_formsets
                with warnings.catch_warnings(record=True):
                    warnings.simplefilter("always")
                    return super(EpisodeAdmin, self).get_formsets(request, obj)

        ma = EpisodeAdmin(Episode, self.site)
        inlines = ma.get_inline_instances(request)
        with warnings.catch_warnings(record=True):
            warnings.simplefilter("always")
            for (formset, inline), other_inline in zip(ma.get_formsets_with_inlines(request), inlines):
                self.assertIsInstance(formset, other_inline.get_formset(request).__class__)
