from typing import Any
from unittest import mock

from zerver.lib.attachments import user_attachments
from zerver.lib.test_classes import ZulipTestCase
from zerver.models import Attachment


class AttachmentsTests(ZulipTestCase):
    def setUp(self) -> None:
        super().setUp()
        user_profile = self.example_user("cordelia")
        self.attachment = Attachment.objects.create(
            file_name="test.txt",
            path_id="foo/bar/test.txt",
            owner=user_profile,
            realm=user_profile.realm,
            size=512,
        )

    def test_list_by_user(self) -> None:
        user_profile = self.example_user("cordelia")
        self.login_user(user_profile)
        result = self.client_get("/json/attachments")
        response_dict = self.assert_json_success(result)
        attachments = user_attachments(user_profile)
        self.assertEqual(response_dict["attachments"], attachments)

    def test_remove_attachment_exception(self) -> None:
        user_profile = self.example_user("cordelia")
        self.login_user(user_profile)
        with mock.patch(
            "zerver.lib.attachments.delete_message_attachment", side_effect=Exception()
        ):
            result = self.client_delete(f"/json/attachments/{self.attachment.id}")
        self.assert_json_error(
            result, "An error occurred while deleting the attachment. Please try again later."
        )

    @mock.patch("zerver.lib.attachments.delete_message_attachment")
    def test_remove_attachment(self, ignored: Any) -> None:
        user_profile = self.example_user("cordelia")
        self.login_user(user_profile)
        result = self.client_delete(f"/json/attachments/{self.attachment.id}")
        self.assert_json_success(result)
        attachments = user_attachments(user_profile)
        self.assertEqual(attachments, [])

    def test_list_another_user(self) -> None:
        user_profile = self.example_user("iago")
        self.login_user(user_profile)
        result = self.client_get("/json/attachments")
        response_dict = self.assert_json_success(result)
        self.assertEqual(response_dict["attachments"], [])

    def test_remove_another_user(self) -> None:
        user_profile = self.example_user("iago")
        self.login_user(user_profile)
        result = self.client_delete(f"/json/attachments/{self.attachment.id}")
        self.assert_json_error(result, "Invalid attachment")
        user_profile_to_remove = self.example_user("cordelia")
        attachments = user_attachments(user_profile_to_remove)
        self.assertEqual(attachments, [self.attachment.to_dict()])

    def test_list_unauthenticated(self) -> None:
        result = self.client_get("/json/attachments")
        self.assert_json_error(
            result, "Not logged in: API authentication or user session required", status_code=401
        )

    def test_delete_unauthenticated(self) -> None:
        result = self.client_delete(f"/json/attachments/{self.attachment.id}")
        self.assert_json_error(
            result, "Not logged in: API authentication or user session required", status_code=401
        )