from django.test import TestCase
from django.test.client import Client
from django.contrib.auth.models import User, Group
from django.core.exceptions import SuspiciousOperation

from vm.models import Instance, InstanceTemplate, Lease, Node
from ..models import Profile
from storage.models import Disk
from firewall.models import Vlan


class LoginMixin(object):
    def login(self, client, username, password='password'):
        response = client.post('/accounts/login/', {'username': username,
                                                    'password': password})
        self.assertNotEqual(response.status_code, 403)


class VmDetailTest(LoginMixin, TestCase):
    fixtures = ['test-vm-fixture.json']

    def setUp(self):
        self.u1 = User.objects.create(username='user1')
        self.u1.set_password('password')
        self.u1.save()
        self.u2 = User.objects.create(username='user2', is_staff=True)
        self.u2.set_password('password')
        self.u2.save()
        self.us = User.objects.create(username='superuser', is_superuser=True)
        self.us.set_password('password')
        self.us.save()
        self.g1 = Group.objects.create(name='group1')
        self.g1.user_set.add(self.u1)
        self.g1.user_set.add(self.u2)
        self.g1.save()

    def tearDown(self):
        super(VmDetailTest, self).tearDown()
        self.u1.delete()
        self.u2.delete()
        self.us.delete()
        self.g1.delete()

    def test_404_vm_page(self):
        c = Client()
        self.login(c, 'user1')
        response = c.get('/dashboard/vm/235555/')
        self.assertEqual(response.status_code, 404)

    def test_anon_vm_page(self):
        c = Client()
        response = c.get('/dashboard/vm/1/')
        self.assertRedirects(response, '/accounts/login/'
                                       '?next=/dashboard/vm/1/')

    def test_unauth_vm_page(self):
        c = Client()
        self.login(c, 'user1')
        response = c.get('/dashboard/vm/1/')
        self.assertEqual(response.status_code, 403)

    def test_operator_vm_page(self):
        c = Client()
        self.login(c, 'user2')
        inst = Instance.objects.get(pk=1)
        inst.set_level(self.u2, 'operator')
        response = c.get('/dashboard/vm/1/')
        self.assertEqual(response.status_code, 200)

    def test_user_vm_page(self):
        c = Client()
        self.login(c, 'user2')
        inst = Instance.objects.get(pk=1)
        inst.set_level(self.u2, 'user')
        response = c.get('/dashboard/vm/1/')
        self.assertEqual(response.status_code, 200)

    def test_permitted_vm_delete(self):
        c = Client()
        self.login(c, 'user2')
        inst = Instance.objects.get(pk=1)
        inst.set_level(self.u2, 'owner')
        response = c.post('/dashboard/vm/delete/1/')
        self.assertEqual(response.status_code, 302)

    def test_not_permitted_vm_delete(self):
        c = Client()
        self.login(c, 'user2')
        inst = Instance.objects.get(pk=1)
        inst.set_level(self.u2, 'operator')
        response = c.post('/dashboard/vm/delete/1/')
        self.assertEqual(response.status_code, 403)

    def test_unpermitted_vm_delete(self):
        c = Client()
        self.login(c, 'user1')
        response = c.post('/dashboard/vm/delete/1/')
        self.assertEqual(response.status_code, 403)

    def test_unpermitted_vm_mass_delete(self):
        c = Client()
        self.login(c, 'user1')
        response = c.post('/dashboard/vm/mass-delete/', {'vms': [1]})
        self.assertEqual(response.status_code, 403)

    def test_permitted_vm_mass_delete(self):
        c = Client()
        self.login(c, 'user2')
        inst = Instance.objects.get(pk=1)
        inst.set_level(self.u2, 'owner')
        response = c.post('/dashboard/vm/mass-delete/', {'vms': [1]})
        self.assertEqual(response.status_code, 302)

    def test_unpermitted_password_change(self):
        c = Client()
        self.login(c, "user2")
        inst = Instance.objects.get(pk=1)
        inst.set_level(self.u1, 'owner')
        password = inst.pw
        response = c.post("/dashboard/vm/1/", {'change_password': True})
        self.assertEqual(response.status_code, 403)
        self.assertEqual(password, inst.pw)

    def test_unpermitted_network_add(self):
        c = Client()
        self.login(c, "user2")
        inst = Instance.objects.get(pk=1)
        inst.set_level(self.u1, 'owner')
        response = c.post("/dashboard/vm/1/", {'new_network_vlan': 1})
        self.assertEqual(response.status_code, 403)

    def test_permitted_network_add(self):
        c = Client()
        self.login(c, "user1")
        inst = Instance.objects.get(pk=1)
        inst.set_level(self.u1, 'owner')
        vlan = Vlan.objects.get(id=1)
        vlan.set_level(self.u1, 'user')
        interface_count = inst.interface_set.count()
        response = c.post("/dashboard/vm/1/",
                          {'new_network_vlan': 1})
        self.assertEqual(response.status_code, 302)
        self.assertEqual(inst.interface_set.count(), interface_count + 1)

    def test_create_vm_w_unpermitted_network(self):
        c = Client()
        self.login(c, 'user2')
        response = c.post('/dashboard/vm/create/',
                          {'template': 1,
                           'cpu_priority': 1, 'cpu_count': 1,
                           'ram_size': 1000})
        self.assertEqual(response.status_code, 403)

    def test_use_unpermitted_template(self):
        c = Client()
        self.login(c, 'user1')
        Disk.objects.get(id=1).set_level(self.u1, 'user')
        Vlan.objects.get(id=1).set_level(self.u1, 'user')
        response = c.post('/dashboard/vm/create/',
                          {'template': 1,
                           'cpu_priority': 1, 'cpu_count': 1,
                           'ram_size': 1000})
        self.assertEqual(response.status_code, 403)

    def test_use_permitted_template(self):
        c = Client()
        self.login(c, 'user1')
        Disk.objects.get(id=1).set_level(self.u1, 'user')
        InstanceTemplate.objects.get(id=1).set_level(self.u1, 'user')
        Vlan.objects.get(id=1).set_level(self.u1, 'user')
        response = c.post('/dashboard/vm/create/',
                          {'template': 1,
                           'cpu_priority': 1, 'cpu_count': 1,
                           'ram_size': 1000})
        self.assertEqual(response.status_code, 302)

    def test_use_permitted_template_superuser(self):
        c = Client()
        self.login(c, 'superuser')
        response = c.post('/dashboard/vm/create/',
                          {'template': 1,
                           'cpu_priority': 1, 'cpu_count': 1,
                           'ram_size': 1000})
        self.assertEqual(response.status_code, 302)

    def test_edit_unpermitted_template(self):
        c = Client()
        self.login(c, 'user1')
        InstanceTemplate.objects.get(id=1).set_level(self.u1, 'user')
        response = c.post('/dashboard/template/1/', {})
        self.assertEqual(response.status_code, 403)

    def test_permitted_lease_delete(self):
        c = Client()
        self.login(c, 'superuser')
        leases = Lease.objects.count()
        response = c.post("/dashboard/lease/delete/1/")
        self.assertEqual(response.status_code, 302)
        self.assertEqual(leases - 1, Lease.objects.count())

    def test_unpermitted_lease_delete(self):
        c = Client()
        self.login(c, 'user1')
        leases = Lease.objects.count()
        response = c.post("/dashboard/lease/delete/1/")
        # redirect to the login page
        self.assertEqual(response.status_code, 302)
        self.assertEqual(leases, Lease.objects.count())

    def test_unpermitted_vm_disk_add(self):
        c = Client()
        self.login(c, "user2")
        inst = Instance.objects.get(pk=1)
        inst.set_level(self.u1, 'owner')
        disks = inst.disks.count()
        response = c.post("/dashboard/vm/1/", {'disk-name': "a",
                                               'disk-size': 1})
        self.assertEqual(response.status_code, 403)
        self.assertEqual(disks, inst.disks.count())

    def test_permitted_vm_disk_add(self):
        c = Client()
        self.login(c, "user1")
        inst = Instance.objects.get(pk=1)
        inst.set_level(self.u1, 'owner')
        disks = inst.disks.count()
        response = c.post("/dashboard/vm/1/", {'disk-name': "a",
                                               'disk-size': 1})
        self.assertEqual(response.status_code, 302)
        self.assertEqual(disks + 1, inst.disks.count())

    def test_notification_read(self):
        c = Client()
        self.login(c, "user1")
        self.u1.profile.notify('subj', 'dashboard/test_message.txt',
                               {'var': 'testme'})
        assert self.u1.notification_set.get().status == 'new'
        response = c.get("/dashboard/notifications/")
        self.assertEqual(response.status_code, 200)
        assert self.u1.notification_set.get().status == 'read'


class VmDetailVncTest(LoginMixin, TestCase):
    fixtures = ['test-vm-fixture.json', 'node.json']

    def setUp(self):
        self.u1 = User.objects.create(username='user1')
        self.u1.set_password('password')
        self.u1.save()

    def test_permitted_vm_console(self):
        c = Client()
        self.login(c, 'user1')
        inst = Instance.objects.get(pk=1)
        inst.node = Node.objects.all()[0]
        inst.save()
        inst.set_level(self.u1, 'operator')
        response = c.get('/dashboard/vm/1/vnctoken/')
        self.assertEqual(response.status_code, 200)

    def test_not_permitted_vm_console(self):
        c = Client()
        self.login(c, 'user1')
        inst = Instance.objects.get(pk=1)
        inst.node = Node.objects.all()[0]
        inst.save()
        inst.set_level(self.u1, 'user')
        response = c.get('/dashboard/vm/1/vnctoken/')
        self.assertEqual(response.status_code, 403)


class TransferOwnershipViewTest(LoginMixin, TestCase):
    fixtures = ['test-vm-fixture.json']

    def setUp(self):
        self.u1 = User.objects.create(username='user1')
        self.u1.set_password('password')
        self.u1.save()
        Profile.objects.create(user=self.u1)
        self.u2 = User.objects.create(username='user2', is_staff=True)
        self.u2.set_password('password')
        self.u2.save()
        Profile.objects.create(user=self.u2)
        self.us = User.objects.create(username='superuser', is_superuser=True)
        self.us.set_password('password')
        self.us.save()
        Profile.objects.create(user=self.us)
        inst = Instance.objects.get(pk=1)
        inst.owner = self.u1
        inst.save()

    def test_non_owner_offer(self):
        c2 = self.u2.notification_set.count()
        c = Client()
        self.login(c, 'user2')
        with self.assertRaises(SuspiciousOperation):
            c.post('/dashboard/vm/1/tx/')
        self.assertEqual(self.u2.notification_set.count(), c2)

    def test_owned_offer(self):
        c2 = self.u2.notification_set.count()
        c = Client()
        self.login(c, 'user1')
        response = c.get('/dashboard/vm/1/tx/')
        assert response.status_code == 200
        response = c.post('/dashboard/vm/1/tx/', {'name': 'user2'})
        self.assertEqual(self.u2.notification_set.count(), c2 + 1)

    def test_transfer(self):
        c = Client()
        self.login(c, 'user1')
        response = c.post('/dashboard/vm/1/tx/', {'name': 'user2'})
        url = response.context['token']
        c = Client()
        self.login(c, 'user2')
        response = c.post(url)
        self.assertEquals(Instance.objects.get(pk=1).owner.pk, self.u2.pk)

    def test_transfer_token_used_by_others(self):
        c = Client()
        self.login(c, 'user1')
        response = c.post('/dashboard/vm/1/tx/', {'name': 'user2'})
        url = response.context['token']
        response = c.post(url)  # token is for user2
        assert response.status_code == 403
        self.assertEquals(Instance.objects.get(pk=1).owner.pk, self.u1.pk)

    def test_transfer_by_superuser(self):
        c = Client()
        self.login(c, 'superuser')
        response = c.post('/dashboard/vm/1/tx/', {'name': 'user2'})
        url = response.context['token']
        c = Client()
        self.login(c, 'user2')
        response = c.post(url)
        self.assertEquals(Instance.objects.get(pk=1).owner.pk, self.u2.pk)