#
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
# Copyright 2021 The Matrix.org Foundation C.I.C.
# Copyright 2020 Dirk Klimpel
# Copyright (C) 2023 New Vector, Ltd
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# See the GNU Affero General Public License for more details:
# <https://www.gnu.org/licenses/agpl-3.0.html>.
#
# Originally licensed under the Apache License, Version 2.0:
# <http://www.apache.org/licenses/LICENSE-2.0>.
#
# [This file includes modifications made by New Vector Limited]
#
#
import os

from parameterized import parameterized

from twisted.internet.testing import MemoryReactor
from twisted.web.resource import Resource

import synapse.rest.admin
from synapse.api.errors import Codes
from synapse.media._base import FileInfo
from synapse.media.filepath import MediaFilePaths
from synapse.rest.client import login, media, profile, room
from synapse.server import HomeServer
from synapse.util.clock import Clock

from tests import unittest
from tests.test_utils import SMALL_CMYK_JPEG, SMALL_PNG
from tests.unittest import override_config

VALID_TIMESTAMP = 1609459200000  # 2021-01-01 in milliseconds
INVALID_TIMESTAMP_IN_S = 1893456000  # 2030-01-01 in seconds


class _AdminMediaTests(unittest.HomeserverTestCase):
    servlets = [
        synapse.rest.admin.register_servlets,
        synapse.rest.admin.register_servlets_for_media_repo,
        login.register_servlets,
        media.register_servlets,
    ]

    def create_resource_dict(self) -> dict[str, Resource]:
        resources = super().create_resource_dict()
        resources["/_matrix/media"] = self.hs.get_media_repository_resource()
        return resources


class QueryMediaByIDTestCase(_AdminMediaTests):
    def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
        self.hs = hs
        self.clock = clock
        self.server_name = hs.hostname
        self.store = hs.get_datastores().main

        self.admin_user = self.register_user("admin", "pass", admin=True)
        self.admin_user_tok = self.login("admin", "pass")

    def _cache_remote_media(self, file_id: str) -> None:
        file_info = FileInfo(server_name="remote.com", file_id=file_id)

        media_storage = self.hs.get_media_repository().media_storage

        ctx = media_storage.store_into_file(file_info)
        (f, fname) = self.get_success(ctx.__aenter__())
        f.write(SMALL_PNG)
        self.get_success(ctx.__aexit__(None, None, None))

        self.get_success(
            self.store.store_cached_remote_media(
                origin="remote.com",
                media_id=file_id,
                media_type="image/png",
                media_length=len(SMALL_PNG),
                time_now_ms=self.clock.time_msec(),
                upload_name="test.png",
                filesystem_id=file_id,
                sha256=file_id,
            )
        )

        channel = self.make_request(
            "GET",
            f"/_matrix/client/v1/media/download/remote.com/{file_id}",
            shorthand=False,
            access_token=self.admin_user_tok,
        )

        # Should be successful
        self.assertEqual(
            200,
            channel.code,
            msg=("Expected to receive a 200 on accessing media"),
        )

    def test_no_auth(self) -> None:
        """
        Try to query media without authentication.
        """
        url = f"/_synapse/admin/v1/media/{self.server_name}/12345"
        channel = self.make_request("GET", url)

        self.assertEqual(
            401,
            channel.code,
            msg=channel.json_body,
        )
        self.assertEqual(Codes.MISSING_TOKEN, channel.json_body["errcode"])

    def test_requester_is_no_admin(self) -> None:
        """
        If the user is not a server admin, an error is returned.
        """
        self.other_user = self.register_user("user", "pass")
        self.other_user_token = self.login("user", "pass")

        channel = self.make_request(
            "GET",
            f"/_synapse/admin/v1/media/{self.server_name}/12345",
            access_token=self.other_user_token,
        )

        self.assertEqual(403, channel.code, msg=channel.json_body)
        self.assertEqual(Codes.FORBIDDEN, channel.json_body["errcode"])

    def test_local_media_does_not_exist(self) -> None:
        """
        Tests that a lookup for local media that does not exist returns a 404
        """
        channel = self.make_request(
            "GET",
            f"/_synapse/admin/v1/media/{self.server_name}/12345",
            access_token=self.admin_user_tok,
        )

        self.assertEqual(404, channel.code, msg=channel.json_body)
        self.assertEqual(Codes.NOT_FOUND, channel.json_body["errcode"])

    def test_remote_media_does_not_exist(self) -> None:
        """
        Tests that a lookup for remote media that is not cached returns a 404
        """
        channel = self.make_request(
            "GET",
            f"/_synapse/admin/v1/media/{self.server_name}/12345",
            access_token=self.admin_user_tok,
        )

        self.assertEqual(404, channel.code, msg=channel.json_body)
        self.assertEqual(Codes.NOT_FOUND, channel.json_body["errcode"])

    def test_query_local_media(self) -> None:
        """
        Tests that querying an existing local media returns appropriate media info
        """

        # Upload some media into the room
        response = self.helper.upload_media(
            SMALL_PNG,
            tok=self.admin_user_tok,
            expect_code=200,
        )
        # Extract media ID from the response
        server_and_media_id = response["content_uri"][6:]  # Cut off 'mxc://'
        server_name, media_id = server_and_media_id.split("/")
        self.assertEqual(server_name, self.server_name)

        channel = self.make_request(
            "GET",
            f"/_synapse/admin/v1/media/{self.server_name}/{media_id}",
            access_token=self.admin_user_tok,
        )

        self.assertEqual(200, channel.code, msg=channel.json_body)
        self.assertEqual(channel.json_body["media_info"]["authenticated"], True)
        self.assertEqual(channel.json_body["media_info"]["media_id"], media_id)
        self.assertEqual(
            channel.json_body["media_info"]["media_length"], len(SMALL_PNG)
        )
        self.assertEqual(
            channel.json_body["media_info"]["media_type"], "application/json"
        )
        self.assertEqual(channel.json_body["media_info"]["upload_name"], "test.png")
        self.assertEqual(channel.json_body["media_info"]["user_id"], "@admin:test")

    def test_query_remote_media(self) -> None:
        file_id = "abcdefg12345"
        self._cache_remote_media(file_id)

        channel = self.make_request(
            "GET",
            f"/_synapse/admin/v1/media/remote.com/{file_id}",
            access_token=self.admin_user_tok,
        )

        self.assertEqual(200, channel.code, msg=channel.json_body)
        self.assertEqual(channel.json_body["media_info"]["authenticated"], True)
        self.assertEqual(channel.json_body["media_info"]["media_id"], file_id)
        self.assertEqual(
            channel.json_body["media_info"]["media_length"], len(SMALL_PNG)
        )
        self.assertEqual(channel.json_body["media_info"]["media_type"], "image/png")
        self.assertEqual(channel.json_body["media_info"]["upload_name"], "test.png")
        self.assertEqual(channel.json_body["media_info"]["media_origin"], "remote.com")


class DeleteMediaByIDTestCase(_AdminMediaTests):
    def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
        self.server_name = hs.hostname

        self.admin_user = self.register_user("admin", "pass", admin=True)
        self.admin_user_tok = self.login("admin", "pass")

        self.filepaths = MediaFilePaths(hs.config.media.media_store_path)

    def test_no_auth(self) -> None:
        """
        Try to delete media without authentication.
        """
        url = "/_synapse/admin/v1/media/%s/%s" % (self.server_name, "12345")

        channel = self.make_request("DELETE", url, b"{}")

        self.assertEqual(
            401,
            channel.code,
            msg=channel.json_body,
        )
        self.assertEqual(Codes.MISSING_TOKEN, channel.json_body["errcode"])

    def test_requester_is_no_admin(self) -> None:
        """
        If the user is not a server admin, an error is returned.
        """
        self.other_user = self.register_user("user", "pass")
        self.other_user_token = self.login("user", "pass")

        url = "/_synapse/admin/v1/media/%s/%s" % (self.server_name, "12345")

        channel = self.make_request(
            "DELETE",
            url,
            access_token=self.other_user_token,
        )

        self.assertEqual(403, channel.code, msg=channel.json_body)
        self.assertEqual(Codes.FORBIDDEN, channel.json_body["errcode"])

    def test_media_does_not_exist(self) -> None:
        """
        Tests that a lookup for a media that does not exist returns a 404
        """
        url = "/_synapse/admin/v1/media/%s/%s" % (self.server_name, "12345")

        channel = self.make_request(
            "DELETE",
            url,
            access_token=self.admin_user_tok,
        )

        self.assertEqual(404, channel.code, msg=channel.json_body)
        self.assertEqual(Codes.NOT_FOUND, channel.json_body["errcode"])

    def test_media_is_not_local(self) -> None:
        """
        Tests that a lookup for a media that is not a local returns a 400
        """
        url = "/_synapse/admin/v1/media/%s/%s" % ("unknown_domain", "12345")

        channel = self.make_request(
            "DELETE",
            url,
            access_token=self.admin_user_tok,
        )

        self.assertEqual(400, channel.code, msg=channel.json_body)
        self.assertEqual("Can only delete local media", channel.json_body["error"])

    @override_config({"enable_authenticated_media": False})
    def test_delete_media(self) -> None:
        """
        Tests that delete a media is successfully
        """

        # Upload some media into the room
        response = self.helper.upload_media(
            SMALL_PNG,
            tok=self.admin_user_tok,
            expect_code=200,
        )
        # Extract media ID from the response
        server_and_media_id = response["content_uri"][6:]  # Cut off 'mxc://'
        server_name, media_id = server_and_media_id.split("/")

        self.assertEqual(server_name, self.server_name)

        # Attempt to access media
        channel = self.make_request(
            "GET",
            f"/_matrix/media/v3/download/{server_and_media_id}",
            shorthand=False,
            access_token=self.admin_user_tok,
        )

        # Should be successful
        self.assertEqual(
            200,
            channel.code,
            msg=(
                "Expected to receive a 200 on accessing media: %s" % server_and_media_id
            ),
        )

        # Test if the file exists
        local_path = self.filepaths.local_media_filepath(media_id)
        self.assertTrue(os.path.exists(local_path))

        url = "/_synapse/admin/v1/media/%s/%s" % (self.server_name, media_id)

        # Delete media
        channel = self.make_request(
            "DELETE",
            url,
            access_token=self.admin_user_tok,
        )

        self.assertEqual(200, channel.code, msg=channel.json_body)
        self.assertEqual(1, channel.json_body["total"])
        self.assertEqual(
            media_id,
            channel.json_body["deleted_media"][0],
        )

        # Attempt to access media
        channel = self.make_request(
            "GET",
            f"/_matrix/media/v3/download/{server_and_media_id}",
            shorthand=False,
            access_token=self.admin_user_tok,
        )
        self.assertEqual(
            404,
            channel.code,
            msg=(
                "Expected to receive a 404 on accessing deleted media: %s"
                % server_and_media_id
            ),
        )

        # Test if the file is deleted
        self.assertFalse(os.path.exists(local_path))


class DeleteMediaByDateSizeTestCase(_AdminMediaTests):
    servlets = [
        synapse.rest.admin.register_servlets,
        synapse.rest.admin.register_servlets_for_media_repo,
        login.register_servlets,
        profile.register_servlets,
        room.register_servlets,
    ]

    def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
        self.media_repo = hs.get_media_repository_resource()
        self.server_name = hs.hostname

        self.admin_user = self.register_user("admin", "pass", admin=True)
        self.admin_user_tok = self.login("admin", "pass")

        self.filepaths = MediaFilePaths(hs.config.media.media_store_path)
        self.url = "/_synapse/admin/v1/media/delete"
        self.legacy_url = "/_synapse/admin/v1/media/%s/delete" % self.server_name

        # Move clock up to somewhat realistic time
        self.reactor.advance(1000000000)

    def test_no_auth(self) -> None:
        """
        Try to delete media without authentication.
        """

        channel = self.make_request("POST", self.url, b"{}")

        self.assertEqual(401, channel.code, msg=channel.json_body)
        self.assertEqual(Codes.MISSING_TOKEN, channel.json_body["errcode"])

    def test_requester_is_no_admin(self) -> None:
        """
        If the user is not a server admin, an error is returned.
        """
        self.other_user = self.register_user("user", "pass")
        self.other_user_token = self.login("user", "pass")

        channel = self.make_request(
            "POST",
            self.url,
            access_token=self.other_user_token,
        )

        self.assertEqual(403, channel.code, msg=channel.json_body)
        self.assertEqual(Codes.FORBIDDEN, channel.json_body["errcode"])

    def test_media_is_not_local(self) -> None:
        """
        Tests that a lookup for media that is not local returns a 400
        """
        url = "/_synapse/admin/v1/media/%s/delete" % "unknown_domain"

        channel = self.make_request(
            "POST",
            url + f"?before_ts={VALID_TIMESTAMP}",
            access_token=self.admin_user_tok,
        )

        self.assertEqual(400, channel.code, msg=channel.json_body)
        self.assertEqual("Can only delete local media", channel.json_body["error"])

    def test_missing_parameter(self) -> None:
        """
        If the parameter `before_ts` is missing, an error is returned.
        """
        channel = self.make_request(
            "POST",
            self.url,
            access_token=self.admin_user_tok,
        )

        self.assertEqual(400, channel.code, msg=channel.json_body)
        self.assertEqual(Codes.MISSING_PARAM, channel.json_body["errcode"])
        self.assertEqual(
            "Missing required integer query parameter before_ts",
            channel.json_body["error"],
        )

    def test_invalid_parameter(self) -> None:
        """
        If parameters are invalid, an error is returned.
        """
        channel = self.make_request(
            "POST",
            self.url + "?before_ts=-1234",
            access_token=self.admin_user_tok,
        )

        self.assertEqual(400, channel.code, msg=channel.json_body)
        self.assertEqual(Codes.INVALID_PARAM, channel.json_body["errcode"])
        self.assertEqual(
            "Query parameter before_ts must be a positive integer.",
            channel.json_body["error"],
        )

        channel = self.make_request(
            "POST",
            self.url + f"?before_ts={INVALID_TIMESTAMP_IN_S}",
            access_token=self.admin_user_tok,
        )

        self.assertEqual(400, channel.code, msg=channel.json_body)
        self.assertEqual(Codes.INVALID_PARAM, channel.json_body["errcode"])
        self.assertEqual(
            "Query parameter before_ts you provided is from the year 1970. "
            + "Double check that you are providing a timestamp in milliseconds.",
            channel.json_body["error"],
        )

        channel = self.make_request(
            "POST",
            self.url + f"?before_ts={VALID_TIMESTAMP}&size_gt=-1234",
            access_token=self.admin_user_tok,
        )

        self.assertEqual(400, channel.code, msg=channel.json_body)
        self.assertEqual(Codes.INVALID_PARAM, channel.json_body["errcode"])
        self.assertEqual(
            "Query parameter size_gt must be a positive integer.",
            channel.json_body["error"],
        )

        channel = self.make_request(
            "POST",
            self.url + f"?before_ts={VALID_TIMESTAMP}&keep_profiles=not_bool",
            access_token=self.admin_user_tok,
        )

        self.assertEqual(400, channel.code, msg=channel.json_body)
        self.assertEqual(Codes.INVALID_PARAM, channel.json_body["errcode"])
        self.assertEqual(
            "Boolean query parameter 'keep_profiles' must be one of ['true', 'false']",
            channel.json_body["error"],
        )

    @parameterized.expand([(True,), (False,)])
    def test_delete_media_never_accessed(self, use_legacy_url: bool) -> None:
        """
        Tests that media deleted if it is older than `before_ts` and never accessed
        `last_access_ts` is `NULL` and `created_ts` < `before_ts`
        """
        url = self.legacy_url if use_legacy_url else self.url

        # upload and do not access
        server_and_media_id = self._create_media()
        self.pump(1.0)

        # test that the file exists
        media_id = server_and_media_id.split("/")[1]
        local_path = self.filepaths.local_media_filepath(media_id)
        self.assertTrue(os.path.exists(local_path))

        # timestamp after upload/create
        now_ms = self.clock.time_msec()
        channel = self.make_request(
            "POST",
            url + "?before_ts=" + str(now_ms),
            access_token=self.admin_user_tok,
        )
        self.assertEqual(200, channel.code, msg=channel.json_body)
        self.assertEqual(1, channel.json_body["total"])
        self.assertEqual(
            media_id,
            channel.json_body["deleted_media"][0],
        )

        self._access_media(server_and_media_id, False)

    @override_config({"enable_authenticated_media": False})
    def test_keep_media_by_date(self) -> None:
        """
        Tests that media is not deleted if it is newer than `before_ts`
        """

        # timestamp before upload
        now_ms = self.clock.time_msec()
        server_and_media_id = self._create_media()

        self._access_media(server_and_media_id)

        channel = self.make_request(
            "POST",
            self.url + "?before_ts=" + str(now_ms),
            access_token=self.admin_user_tok,
        )
        self.assertEqual(200, channel.code, msg=channel.json_body)
        self.assertEqual(0, channel.json_body["total"])

        self._access_media(server_and_media_id)

        # timestamp after upload
        now_ms = self.clock.time_msec()
        channel = self.make_request(
            "POST",
            self.url + "?before_ts=" + str(now_ms),
            access_token=self.admin_user_tok,
        )
        self.assertEqual(200, channel.code, msg=channel.json_body)
        self.assertEqual(1, channel.json_body["total"])
        self.assertEqual(
            server_and_media_id.split("/")[1],
            channel.json_body["deleted_media"][0],
        )

        self._access_media(server_and_media_id, False)

    @override_config({"enable_authenticated_media": False})
    def test_keep_media_by_size(self) -> None:
        """
        Tests that media is not deleted if its size is smaller than or equal
        to `size_gt`
        """
        server_and_media_id = self._create_media()

        self._access_media(server_and_media_id)

        now_ms = self.clock.time_msec()
        channel = self.make_request(
            "POST",
            self.url + "?before_ts=" + str(now_ms) + "&size_gt=67",
            access_token=self.admin_user_tok,
        )
        self.assertEqual(200, channel.code, msg=channel.json_body)
        self.assertEqual(0, channel.json_body["total"])

        self._access_media(server_and_media_id)

        now_ms = self.clock.time_msec()
        channel = self.make_request(
            "POST",
            self.url + "?before_ts=" + str(now_ms) + "&size_gt=66",
            access_token=self.admin_user_tok,
        )
        self.assertEqual(200, channel.code, msg=channel.json_body)
        self.assertEqual(1, channel.json_body["total"])
        self.assertEqual(
            server_and_media_id.split("/")[1],
            channel.json_body["deleted_media"][0],
        )

        self._access_media(server_and_media_id, False)

    @override_config({"enable_authenticated_media": False})
    def test_keep_media_by_user_avatar(self) -> None:
        """
        Tests that we do not delete media if is used as a user avatar
        Tests parameter `keep_profiles`
        """
        server_and_media_id = self._create_media()

        self._access_media(server_and_media_id)

        # set media as avatar
        channel = self.make_request(
            "PUT",
            "/profile/%s/avatar_url" % (self.admin_user,),
            content={"avatar_url": "mxc://%s" % (server_and_media_id,)},
            access_token=self.admin_user_tok,
        )
        self.assertEqual(200, channel.code, msg=channel.json_body)

        now_ms = self.clock.time_msec()
        channel = self.make_request(
            "POST",
            self.url + "?before_ts=" + str(now_ms) + "&keep_profiles=true",
            access_token=self.admin_user_tok,
        )
        self.assertEqual(200, channel.code, msg=channel.json_body)
        self.assertEqual(0, channel.json_body["total"])

        self._access_media(server_and_media_id)

        now_ms = self.clock.time_msec()
        channel = self.make_request(
            "POST",
            self.url + "?before_ts=" + str(now_ms) + "&keep_profiles=false",
            access_token=self.admin_user_tok,
        )
        self.assertEqual(200, channel.code, msg=channel.json_body)
        self.assertEqual(1, channel.json_body["total"])
        self.assertEqual(
            server_and_media_id.split("/")[1],
            channel.json_body["deleted_media"][0],
        )

        self._access_media(server_and_media_id, False)

    @override_config({"enable_authenticated_media": False})
    def test_keep_media_by_room_avatar(self) -> None:
        """
        Tests that we do not delete media if it is used as a room avatar
        Tests parameter `keep_profiles`
        """
        server_and_media_id = self._create_media()

        self._access_media(server_and_media_id)

        # set media as room avatar
        room_id = self.helper.create_room_as(self.admin_user, tok=self.admin_user_tok)
        channel = self.make_request(
            "PUT",
            "/rooms/%s/state/m.room.avatar" % (room_id,),
            content={"url": "mxc://%s" % (server_and_media_id,)},
            access_token=self.admin_user_tok,
        )
        self.assertEqual(200, channel.code, msg=channel.json_body)

        now_ms = self.clock.time_msec()
        channel = self.make_request(
            "POST",
            self.url + "?before_ts=" + str(now_ms) + "&keep_profiles=true",
            access_token=self.admin_user_tok,
        )
        self.assertEqual(200, channel.code, msg=channel.json_body)
        self.assertEqual(0, channel.json_body["total"])

        self._access_media(server_and_media_id)

        now_ms = self.clock.time_msec()
        channel = self.make_request(
            "POST",
            self.url + "?before_ts=" + str(now_ms) + "&keep_profiles=false",
            access_token=self.admin_user_tok,
        )
        self.assertEqual(200, channel.code, msg=channel.json_body)
        self.assertEqual(1, channel.json_body["total"])
        self.assertEqual(
            server_and_media_id.split("/")[1],
            channel.json_body["deleted_media"][0],
        )

        self._access_media(server_and_media_id, False)

    def _create_media(self) -> str:
        """
        Create a media and return media_id and server_and_media_id
        """
        # Upload some media into the room
        response = self.helper.upload_media(
            SMALL_PNG,
            tok=self.admin_user_tok,
            expect_code=200,
        )
        # Extract media ID from the response
        server_and_media_id = response["content_uri"][6:]  # Cut off 'mxc://'
        server_name = server_and_media_id.split("/")[0]

        # Check that new media is a local and not remote
        self.assertEqual(server_name, self.server_name)

        return server_and_media_id

    def _access_media(
        self, server_and_media_id: str, expect_success: bool = True
    ) -> None:
        """
        Try to access a media and check the result
        """
        media_id = server_and_media_id.split("/")[1]
        local_path = self.filepaths.local_media_filepath(media_id)

        channel = self.make_request(
            "GET",
            f"/_matrix/media/v3/download/{server_and_media_id}",
            shorthand=False,
            access_token=self.admin_user_tok,
        )

        if expect_success:
            self.assertEqual(
                200,
                channel.code,
                msg=(
                    "Expected to receive a 200 on accessing media: %s"
                    % server_and_media_id
                ),
            )
            # Test that the file exists
            self.assertTrue(os.path.exists(local_path))
        else:
            self.assertEqual(
                404,
                channel.code,
                msg=(
                    "Expected to receive a 404 on accessing deleted media: %s"
                    % (server_and_media_id)
                ),
            )
            # Test that the file is deleted
            self.assertFalse(os.path.exists(local_path))


class ListQuarantinedMediaChangesTestCase(_AdminMediaTests):
    def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
        self.store = hs.get_datastores().main
        self.server_name = hs.hostname
        self.admin_user = self.register_user("admin", "pass", admin=True)
        self.admin_user_tok = self.login("admin", "pass")

    def test_no_auth(self) -> None:
        """
        Try to list quarantined media changes without authentication.
        """

        channel = self.make_request(
            "GET",
            "/_synapse/admin/v1/media/quarantine_changes",
        )

        self.assertEqual(401, channel.code, msg=channel.json_body)
        self.assertEqual(Codes.MISSING_TOKEN, channel.json_body["errcode"])

    def test_requester_is_not_admin(self) -> None:
        """
        If the user is not a server admin, an error is returned.
        """
        self.other_user = self.register_user("user", "pass")
        self.other_user_token = self.login("user", "pass")

        channel = self.make_request(
            "GET",
            "/_synapse/admin/v1/media/quarantine_changes",
            access_token=self.other_user_token,
        )

        self.assertEqual(403, channel.code, msg=channel.json_body)
        self.assertEqual(Codes.FORBIDDEN, channel.json_body["errcode"])

    def _quarantine_local_media(self, media_id: str, admin_user_tok: str) -> None:
        channel = self.make_request(
            "POST",
            "/_synapse/admin/v1/media/quarantine/%s/%s"
            % (
                self.server_name,
                media_id,
            ),
            access_token=admin_user_tok,
        )
        self.assertEqual(200, channel.code, msg=channel.json_body)

    def _local_upload(self, admin_user_tok: str) -> str:
        response = self.helper.upload_media(
            SMALL_PNG, tok=admin_user_tok, expect_code=200
        )
        origin_and_media_id = response["content_uri"][6:]  # Cut off 'mxc://'
        _origin, media_id = origin_and_media_id.split("/")
        return media_id

    def test_list_quarantined_media(self) -> None:
        """
        Ensure we actually get results for each page and that pagination is seamless.
        """
        # Upload 105 media objects to test multiple pages
        self.media_ids = [self._local_upload(self.admin_user_tok) for _ in range(105)]

        # No changes before quarantine
        channel = self.make_request(
            "GET",
            "/_synapse/admin/v1/media/quarantine_changes",
            access_token=self.admin_user_tok,
        )
        self.assertEqual(200, channel.code, msg=channel.json_body)
        self.assertEqual(0, len(channel.json_body["changes"]))

        # We expect to continue from the current stream position because we have no changes
        self.assertEqual(1, channel.json_body["next_batch"])

        # Quarantine by hash should kick in to get the other 104 media objects
        self._quarantine_local_media(self.media_ids[0], self.admin_user_tok)

        # Page 1 (implied ?from=0)
        channel = self.make_request(
            "GET",
            "/_synapse/admin/v1/media/quarantine_changes",
            access_token=self.admin_user_tok,
        )
        self.assertEqual(200, channel.code, msg=channel.json_body)
        self.assertEqual(100, len(channel.json_body["changes"]))
        self.assertEqual(101, channel.json_body["next_batch"])
        for row in channel.json_body["changes"]:
            self.assertIn(
                row["media_id"],
                self.media_ids[0:100],
            )
            self.assertEqual(row["origin"], self.server_name)
            self.assertEqual(row["quarantined"], True)

        # Page 2 (explicit ?from, using next_batch)
        channel = self.make_request(
            "GET",
            f"/_synapse/admin/v1/media/quarantine_changes?from={channel.json_body['next_batch']}",
            access_token=self.admin_user_tok,
        )
        self.assertEqual(200, channel.code, msg=channel.json_body)
        self.assertEqual(5, len(channel.json_body["changes"]))
        self.assertEqual(106, channel.json_body["next_batch"])
        for row in channel.json_body["changes"]:
            self.assertIn(
                row["media_id"],
                self.media_ids[100:],
            )
            self.assertEqual(row["origin"], self.server_name)
            self.assertEqual(row["quarantined"], True)

    def test_list_quarantined_media_bounds_high(self) -> None:
        """
        Ensure out of bounds (token stream position greater than our furthest persisted
        position) requests with high `from` values are met with an appropriate error.
        """
        # Page that's very much out of range
        channel = self.make_request(
            "GET",
            "/_synapse/admin/v1/media/quarantine_changes?from=900000",
            access_token=self.admin_user_tok,
        )
        self.assertEqual(400, channel.code, msg=channel.json_body)
        self.assertEqual(Codes.INVALID_PARAM, channel.json_body["errcode"])


class QuarantineMediaByIDTestCase(_AdminMediaTests):
    def upload_media_and_return_media_id(self, data: bytes) -> str:
        # Upload some media into the room
        response = self.helper.upload_media(
            data,
            tok=self.admin_user_tok,
            expect_code=200,
        )
        # Extract media ID from the response
        server_and_media_id = response["content_uri"][6:]  # Cut off 'mxc://'
        return server_and_media_id.split("/")[1]

    def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
        self.store = hs.get_datastores().main
        self.server_name = hs.hostname

        self.admin_user = self.register_user("admin", "pass", admin=True)
        self.admin_user_tok = self.login("admin", "pass")
        self.media_id = self.upload_media_and_return_media_id(SMALL_PNG)
        self.media_id_2 = self.upload_media_and_return_media_id(SMALL_PNG)
        self.media_id_3 = self.upload_media_and_return_media_id(SMALL_PNG)
        self.media_id_other = self.upload_media_and_return_media_id(SMALL_CMYK_JPEG)
        self.url = "/_synapse/admin/v1/media/%s/%s/%s"

    @parameterized.expand(["quarantine", "unquarantine"])
    def test_no_auth(self, action: str) -> None:
        """
        Try to protect media without authentication.
        """

        channel = self.make_request(
            "POST",
            self.url % (action, self.server_name, self.media_id),
            b"{}",
        )

        self.assertEqual(401, channel.code, msg=channel.json_body)
        self.assertEqual(Codes.MISSING_TOKEN, channel.json_body["errcode"])

    @parameterized.expand(["quarantine", "unquarantine"])
    def test_requester_is_no_admin(self, action: str) -> None:
        """
        If the user is not a server admin, an error is returned.
        """
        self.other_user = self.register_user("user", "pass")
        self.other_user_token = self.login("user", "pass")

        channel = self.make_request(
            "POST",
            self.url % (action, self.server_name, self.media_id),
            access_token=self.other_user_token,
        )

        self.assertEqual(403, channel.code, msg=channel.json_body)
        self.assertEqual(Codes.FORBIDDEN, channel.json_body["errcode"])

    def test_quarantine_media(self) -> None:
        """
        Tests that quarantining and remove from quarantine a media is successfully
        """

        media_info = self.get_success(self.store.get_local_media(self.media_id))
        assert media_info is not None
        self.assertFalse(media_info.quarantined_by)

        # quarantining
        channel = self.make_request(
            "POST",
            self.url % ("quarantine", self.server_name, self.media_id),
            access_token=self.admin_user_tok,
        )

        self.assertEqual(200, channel.code, msg=channel.json_body)
        self.assertFalse(channel.json_body)

        media_info = self.get_success(self.store.get_local_media(self.media_id))
        assert media_info is not None
        self.assertTrue(media_info.quarantined_by)

        # remove from quarantine
        channel = self.make_request(
            "POST",
            self.url % ("unquarantine", self.server_name, self.media_id),
            access_token=self.admin_user_tok,
        )

        self.assertEqual(200, channel.code, msg=channel.json_body)
        self.assertFalse(channel.json_body)

        media_info = self.get_success(self.store.get_local_media(self.media_id))
        assert media_info is not None
        self.assertFalse(media_info.quarantined_by)

    def test_quarantine_media_match_hash(self) -> None:
        """
        Tests that quarantining removes all media with the same hash
        """

        media_info = self.get_success(self.store.get_local_media(self.media_id))
        assert media_info is not None
        self.assertFalse(media_info.quarantined_by)

        # quarantining
        channel = self.make_request(
            "POST",
            self.url % ("quarantine", self.server_name, self.media_id),
            access_token=self.admin_user_tok,
        )

        self.assertEqual(200, channel.code, msg=channel.json_body)
        self.assertFalse(channel.json_body)

        # Test that ALL similar media was quarantined.
        for media_item in [self.media_id, self.media_id_2, self.media_id_3]:
            media_info = self.get_success(self.store.get_local_media(media_item))
            assert media_info is not None
            self.assertTrue(media_info.quarantined_by)

        # Test that other media was not.
        media_info = self.get_success(self.store.get_local_media(self.media_id_other))
        assert media_info is not None
        self.assertFalse(media_info.quarantined_by)

        # remove from quarantine
        channel = self.make_request(
            "POST",
            self.url % ("unquarantine", self.server_name, self.media_id),
            access_token=self.admin_user_tok,
        )

        self.assertEqual(200, channel.code, msg=channel.json_body)
        self.assertFalse(channel.json_body)

        # Test that ALL similar media is now reset.
        for media_item in [self.media_id, self.media_id_2, self.media_id_3]:
            media_info = self.get_success(self.store.get_local_media(media_item))
            assert media_info is not None
            self.assertFalse(media_info.quarantined_by)

    def test_quarantine_protected_media(self) -> None:
        """
        Tests that quarantining from protected media fails
        """

        # protect
        self.get_success(self.store.mark_local_media_as_safe(self.media_id, safe=True))

        # verify protection
        media_info = self.get_success(self.store.get_local_media(self.media_id))
        assert media_info is not None
        self.assertTrue(media_info.safe_from_quarantine)

        # quarantining
        channel = self.make_request(
            "POST",
            self.url % ("quarantine", self.server_name, self.media_id),
            access_token=self.admin_user_tok,
        )

        self.assertEqual(200, channel.code, msg=channel.json_body)
        self.assertFalse(channel.json_body)

        # verify that is not in quarantine
        media_info = self.get_success(self.store.get_local_media(self.media_id))
        assert media_info is not None
        self.assertFalse(media_info.quarantined_by)


class ProtectMediaByIDTestCase(_AdminMediaTests):
    def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
        hs.get_media_repository_resource()
        self.store = hs.get_datastores().main

        self.admin_user = self.register_user("admin", "pass", admin=True)
        self.admin_user_tok = self.login("admin", "pass")

        # Upload some media into the room
        response = self.helper.upload_media(
            SMALL_PNG,
            tok=self.admin_user_tok,
            expect_code=200,
        )
        # Extract media ID from the response
        server_and_media_id = response["content_uri"][6:]  # Cut off 'mxc://'
        self.media_id = server_and_media_id.split("/")[1]

        self.url = "/_synapse/admin/v1/media/%s/%s"

    @parameterized.expand(["protect", "unprotect"])
    def test_no_auth(self, action: str) -> None:
        """
        Try to protect media without authentication.
        """

        channel = self.make_request("POST", self.url % (action, self.media_id), b"{}")

        self.assertEqual(401, channel.code, msg=channel.json_body)
        self.assertEqual(Codes.MISSING_TOKEN, channel.json_body["errcode"])

    @parameterized.expand(["protect", "unprotect"])
    def test_requester_is_no_admin(self, action: str) -> None:
        """
        If the user is not a server admin, an error is returned.
        """
        self.other_user = self.register_user("user", "pass")
        self.other_user_token = self.login("user", "pass")

        channel = self.make_request(
            "POST",
            self.url % (action, self.media_id),
            access_token=self.other_user_token,
        )

        self.assertEqual(403, channel.code, msg=channel.json_body)
        self.assertEqual(Codes.FORBIDDEN, channel.json_body["errcode"])

    def test_protect_media(self) -> None:
        """
        Tests that protect and unprotect a media is successfully
        """

        media_info = self.get_success(self.store.get_local_media(self.media_id))
        assert media_info is not None
        self.assertFalse(media_info.safe_from_quarantine)

        # protect
        channel = self.make_request(
            "POST",
            self.url % ("protect", self.media_id),
            access_token=self.admin_user_tok,
        )

        self.assertEqual(200, channel.code, msg=channel.json_body)
        self.assertFalse(channel.json_body)

        media_info = self.get_success(self.store.get_local_media(self.media_id))
        assert media_info is not None
        self.assertTrue(media_info.safe_from_quarantine)

        # unprotect
        channel = self.make_request(
            "POST",
            self.url % ("unprotect", self.media_id),
            access_token=self.admin_user_tok,
        )

        self.assertEqual(200, channel.code, msg=channel.json_body)
        self.assertFalse(channel.json_body)

        media_info = self.get_success(self.store.get_local_media(self.media_id))
        assert media_info is not None
        self.assertFalse(media_info.safe_from_quarantine)


class PurgeMediaCacheTestCase(_AdminMediaTests):
    servlets = [
        synapse.rest.admin.register_servlets,
        synapse.rest.admin.register_servlets_for_media_repo,
        login.register_servlets,
        profile.register_servlets,
        room.register_servlets,
    ]

    def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
        self.media_repo = hs.get_media_repository_resource()
        self.server_name = hs.hostname

        self.admin_user = self.register_user("admin", "pass", admin=True)
        self.admin_user_tok = self.login("admin", "pass")

        self.filepaths = MediaFilePaths(hs.config.media.media_store_path)
        self.url = "/_synapse/admin/v1/purge_media_cache"

    def test_no_auth(self) -> None:
        """
        Try to delete media without authentication.
        """

        channel = self.make_request("POST", self.url, b"{}")

        self.assertEqual(
            401,
            channel.code,
            msg=channel.json_body,
        )
        self.assertEqual(Codes.MISSING_TOKEN, channel.json_body["errcode"])

    def test_requester_is_not_admin(self) -> None:
        """
        If the user is not a server admin, an error is returned.
        """
        self.other_user = self.register_user("user", "pass")
        self.other_user_token = self.login("user", "pass")

        channel = self.make_request(
            "POST",
            self.url,
            access_token=self.other_user_token,
        )

        self.assertEqual(403, channel.code, msg=channel.json_body)
        self.assertEqual(Codes.FORBIDDEN, channel.json_body["errcode"])

    def test_invalid_parameter(self) -> None:
        """
        If parameters are invalid, an error is returned.
        """
        channel = self.make_request(
            "POST",
            self.url + "?before_ts=-1234",
            access_token=self.admin_user_tok,
        )

        self.assertEqual(400, channel.code, msg=channel.json_body)
        self.assertEqual(Codes.INVALID_PARAM, channel.json_body["errcode"])
        self.assertEqual(
            "Query parameter before_ts must be a positive integer.",
            channel.json_body["error"],
        )

        channel = self.make_request(
            "POST",
            self.url + f"?before_ts={INVALID_TIMESTAMP_IN_S}",
            access_token=self.admin_user_tok,
        )

        self.assertEqual(400, channel.code, msg=channel.json_body)
        self.assertEqual(Codes.INVALID_PARAM, channel.json_body["errcode"])
        self.assertEqual(
            "Query parameter before_ts you provided is from the year 1970. "
            + "Double check that you are providing a timestamp in milliseconds.",
            channel.json_body["error"],
        )
