from django.contrib.auth import get_user_model
from django.test import TestCase
from django.urls import reverse

from .models import Item, Tag, UserPreference
from .views import parse_due_command, parse_quick_content


class ItemMetadataTests(TestCase):
    def setUp(self):
        self.user = get_user_model().objects.create_user(username='tester', password='secret')

    def test_code_sections_are_ignored_when_extracting_tags(self):
        item = Item.objects.create(
            owner=self.user,
            content='Outside #real\n```python\n# fenced\n```\nInline `#inline` text',
        )
        item.sync_metadata()
        self.assertEqual(list(item.tags.values_list('name', flat=True)), ['real'])
        self.assertFalse(Tag.objects.filter(name__in=['fenced', 'inline']).exists())

    def test_unused_tags_are_removed_after_sync_and_delete(self):
        item = Item.objects.create(owner=self.user, content='#old')
        item.sync_metadata()
        item.content = '#new'
        item.save()
        item.sync_metadata()
        self.assertFalse(Tag.objects.filter(name='old').exists())
        self.assertTrue(Tag.objects.filter(name='new').exists())

        item.delete()
        self.assertFalse(Tag.objects.filter(name='new').exists())


class DefaultItemKindTests(TestCase):
    def setUp(self):
        self.user = get_user_model().objects.create_user(username='tester', password='secret')
        self.client.force_login(self.user)
        self.preferences = UserPreference.objects.create(user=self.user, default_item_kind=Item.Kind.TODO)

    def test_quick_create_uses_user_default(self):
        response = self.client.post(reverse('index'), {'content': 'Default task'})
        self.assertRedirects(response, reverse('index'))
        self.assertEqual(Item.objects.get().kind, Item.Kind.TODO)

    def test_explicit_command_overrides_default(self):
        kind, _, content, _ = parse_quick_content('/note Explicit note', Item.Kind.TODO)
        self.assertEqual(kind, Item.Kind.NOTE)
        self.assertEqual(content, 'Explicit note')

    def test_new_item_editor_uses_user_default(self):
        response = self.client.get(reverse('new_item'))
        self.assertEqual(response.context['requested_kind'], Item.Kind.TODO)


class DueDateCommandTests(TestCase):
    def setUp(self):
        self.user = get_user_model().objects.create_user(username='dates', password='secret')
        self.client.force_login(self.user)

    def test_datum_command_is_removed_and_parsed(self):
        cleaned, due_at, found = parse_due_command('/todo Call back /datum 20.10.26 14:30 #work')
        self.assertTrue(found)
        self.assertEqual(cleaned, '/todo Call back #work')
        self.assertEqual((due_at.year, due_at.month, due_at.day, due_at.hour, due_at.minute), (2026, 10, 20, 14, 30))

    def test_relative_command_sets_due_date_on_quick_create(self):
        response = self.client.post(reverse('index'), {'content': '/todo Call back /morgen'})
        self.assertRedirects(response, reverse('index'))
        item = Item.objects.get()
        self.assertNotIn('/morgen', item.content)
        self.assertIsNotNone(item.due_at)

    def test_type_and_date_commands_are_available_in_menu(self):
        response = self.client.get(reverse('index'))
        self.assertContains(response, "{token:'/note'")
        self.assertContains(response, "{token:'/datum'")
        self.assertContains(response, "let hasType=")


class CopyButtonTests(TestCase):
    def test_item_has_copy_button_with_original_text(self):
        user = get_user_model().objects.create_user(username='tester', password='secret')
        item = Item.objects.create(owner=user, content='Text to copy')
        self.client.force_login(user)
        response = self.client.get(reverse('item_detail', args=[item.pk]))
        self.assertContains(response, 'class="copy-item')
        self.assertContains(response, 'Text to copy')