from unittest import mock

from django.contrib.admin.sites import AdminSite
from django.test import TestCase
from django.utils import timezone

from documents.admin import DocumentAdmin
from documents.models import Document, Tag


class TestDocumentAdmin(TestCase):

    def setUp(self) -> None:
        self.doc_admin = DocumentAdmin(model=Document, admin_site=AdminSite())

    @mock.patch("documents.admin.index.add_or_update_document")
    def test_save_model(self, m):
        doc = Document.objects.create(title="test")
        doc.title = "new title"
        self.doc_admin.save_model(None, doc, None, None)
        self.assertEqual(Document.objects.get(id=doc.id).title, "new title")
        m.assert_called_once()

    def test_tags(self):
        doc = Document.objects.create(title="test")
        doc.tags.create(name="t1")
        doc.tags.create(name="t2")

        self.assertEqual(self.doc_admin.tags_(doc), "<span >t1, </span><span >t2, </span>")

    def test_tags_empty(self):
        doc = Document.objects.create(title="test")

        self.assertEqual(self.doc_admin.tags_(doc), "")

    @mock.patch("documents.admin.index.remove_document")
    def test_delete_model(self, m):
        doc = Document.objects.create(title="test")
        self.doc_admin.delete_model(None, doc)
        self.assertRaises(Document.DoesNotExist, Document.objects.get, id=doc.id)
        m.assert_called_once()

    @mock.patch("documents.admin.index.remove_document")
    def test_delete_queryset(self, m):
        for i in range(42):
            Document.objects.create(title="Many documents with the same title", checksum=f"{i:02}")

        self.assertEqual(Document.objects.count(), 42)

        self.doc_admin.delete_queryset(None, Document.objects.all())

        self.assertEqual(m.call_count, 42)
        self.assertEqual(Document.objects.count(), 0)

    def test_created(self):
        doc = Document.objects.create(title="test", created=timezone.datetime(2020, 4, 12))
        self.assertEqual(self.doc_admin.created_(doc), "2020-04-12")