from datetime import datetime, timedelta

from django.test import TestCase, Client

from authentication.models import ExtendedUser
from mail.models import Email
from tickets.models import IssueThread, StateChange, Comment
from django.contrib.auth.models import Permission
from knox.models import AuthToken


class IssueApiTest(TestCase):

    def setUp(self):
        super().setUp()
        self.user = ExtendedUser.objects.create_user('testuser', 'test', 'test')
        self.user.user_permissions.add(*Permission.objects.all())
        self.user.save()
        self.token = AuthToken.objects.create(user=self.user)
        self.client = Client(headers={'Authorization': 'Token ' + self.token[1]})

    def test_issues_empty(self):
        response = self.client.get('/api/2/tickets/')
        self.assertEqual(response.status_code, 200)
        self.assertEqual(response.json(), [])

    def test_issues(self):
        now = datetime.now()
        issue = IssueThread.objects.create(
            name="test issue",
        )
        mail1 = Email.objects.create(
            subject='test',
            body='test',
            sender='test',
            recipient='test',
            issue_thread=issue,
            timestamp=now,
        )
        mail2 = Email.objects.create(
            subject='test',
            body='test',
            sender='test',
            recipient='test',
            issue_thread=issue,
            in_reply_to=mail1.reference,
            timestamp=now + timedelta(seconds=2),
        )
        comment = Comment.objects.create(
            issue_thread=issue,
            comment="test",
            timestamp=now + timedelta(seconds=3),
        )

        response = self.client.get('/api/2/tickets/')
        self.assertEqual(response.status_code, 200)
        self.assertEqual(len(response.json()), 1)
        self.assertEqual(response.json()[0]['id'], issue.id)
        self.assertEqual(response.json()[0]['name'], "test issue")
        self.assertEqual(response.json()[0]['state'], "pending_new")
        self.assertEqual(response.json()[0]['assigned_to'], None)
        self.assertEqual(response.json()[0]['last_activity'], issue.last_activity.strftime('%Y-%m-%dT%H:%M:%S.%fZ'))
        self.assertEqual(len(response.json()[0]['timeline']), 4)
        self.assertEqual(response.json()[0]['timeline'][0]['type'], 'state')
        self.assertEqual(response.json()[0]['timeline'][1]['type'], 'mail')
        self.assertEqual(response.json()[0]['timeline'][2]['type'], 'mail')
        self.assertEqual(response.json()[0]['timeline'][3]['type'], 'comment')
        self.assertEqual(response.json()[0]['timeline'][1]['id'], mail1.id)
        self.assertEqual(response.json()[0]['timeline'][2]['id'], mail2.id)
        self.assertEqual(response.json()[0]['timeline'][3]['id'], comment.id)
        self.assertEqual(response.json()[0]['timeline'][0]['state'], 'pending_new')
        self.assertEqual(response.json()[0]['timeline'][1]['sender'], 'test')
        self.assertEqual(response.json()[0]['timeline'][1]['recipient'], 'test')
        self.assertEqual(response.json()[0]['timeline'][1]['subject'], 'test')
        self.assertEqual(response.json()[0]['timeline'][1]['body'], 'test')
        self.assertEqual(response.json()[0]['timeline'][1]['timestamp'],
                         mail1.timestamp.strftime('%Y-%m-%dT%H:%M:%S.%fZ'))
        self.assertEqual(response.json()[0]['timeline'][2]['sender'], 'test')
        self.assertEqual(response.json()[0]['timeline'][2]['recipient'], 'test')
        self.assertEqual(response.json()[0]['timeline'][2]['subject'], 'test')
        self.assertEqual(response.json()[0]['timeline'][2]['body'], 'test')
        self.assertEqual(response.json()[0]['timeline'][2]['timestamp'],
                         mail2.timestamp.strftime('%Y-%m-%dT%H:%M:%S.%fZ'))
        self.assertEqual(response.json()[0]['timeline'][3]['comment'], 'test')
        self.assertEqual(response.json()[0]['timeline'][3]['timestamp'],
                         comment.timestamp.strftime('%Y-%m-%dT%H:%M:%S.%fZ'))

    def test_manual_creation(self):
        response = self.client.post('/api/2/tickets/manual/',
                                    {'name': 'test issue', 'sender': 'test', 'recipient': 'test', 'body': 'test'},
                                    content_type='application/json')
        self.assertEqual(response.status_code, 201)
        self.assertEqual(response.json()['state'], 'pending_new')
        self.assertEqual(response.json()['name'], 'test issue')
        self.assertEqual(response.json()['assigned_to'], None)
        timeline = response.json()['timeline']
        self.assertEqual(len(timeline), 2)
        self.assertEqual(timeline[0]['type'], 'state')
        self.assertEqual(timeline[0]['state'], 'pending_new')
        self.assertEqual(timeline[1]['type'], 'mail')
        self.assertEqual(timeline[1]['sender'], 'test')
        self.assertEqual(timeline[1]['recipient'], 'test')
        self.assertEqual(timeline[1]['subject'], 'test issue')
        self.assertEqual(timeline[1]['body'], 'test')

    def test_post_comment(self):
        issue = IssueThread.objects.create(
            name="test issue",
        )
        response = self.client.post('/api/2/comments/', {'comment': 'test', 'issue_thread': issue.id})
        self.assertEqual(response.status_code, 201)
        self.assertEqual(response.json()['comment'], 'test')
        self.assertEqual(response.json()['issue_thread'], issue.id)
        self.assertEqual(response.json()['timestamp'], response.json()['timestamp'])

    def test_state_change(self):
        issue = IssueThread.objects.create(
            name="test issue",
        )
        response = self.client.patch(f'/api/2/tickets/{issue.id}/', {'state': 'pending_open'},
                                     content_type='application/json')
        self.assertEqual(response.status_code, 200)
        self.assertEqual(response.json()['state'], 'pending_open')
        self.assertEqual(response.json()['name'], 'test issue')
        self.assertEqual(response.json()['assigned_to'], None)
        timeline = response.json()['timeline']
        self.assertEqual(len(timeline), 2)
        self.assertEqual(timeline[0]['type'], 'state')
        self.assertEqual(timeline[0]['state'], 'pending_new')
        self.assertEqual(timeline[1]['type'], 'state')
        self.assertEqual(timeline[1]['state'], 'pending_open')

    def test_state_change_invalid_state(self):
        issue = IssueThread.objects.create(
            name="test issue",
        )
        response = self.client.patch(f'/api/2/tickets/{issue.id}/', {'state': 'invalid'},
                                     content_type='application/json')
        self.assertEqual(response.status_code, 400)