Implement minimum amount for a working matrix.to

src/utils/cypher-wrapper.ts

@@ -0,0 +1,88 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the 'License');
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an 'AS IS' BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import {
+    Client,
+    getUserDetails as cGetUserDetails,
+    User,
+    getRoomDetails as cGetRoomDetails,
+    searchPublicRooms as cSearchPublicRooms,
+    Room,
+    convertMXCtoMediaQuery as cConvertMXCtoMediaQuery,
+    getRoomIdFromAlias as cGetRoomIdFromAlias,
+    RoomAlias,
+} from "matrix-cypher";
+
+/*
+ * Gets the details for a user
+ */
+export function getUserDetails(client: Client, userId: string): Promise<User> {
+    return cGetUserDetails(client, userId).catch(() => ({
+        displayname: userId,
+    }));
+}
+
+function defaultRoom(roomId: string): Room {
+    return {
+        aliases: [roomId],
+        topic: "Unable to find room details.",
+        canonical_alias: roomId,
+        name: roomId,
+        num_joined_members: 0,
+        room_id: roomId,
+        guest_can_join: true,
+        avatar_url: "",
+        world_readable: false,
+    };
+}
+
+/*
+ * Gets the details of a room if that room is public
+ */
+export function getRoomDetails(
+    clients: Client[],
+    roomId: string
+): Promise<Room> {
+    return cGetRoomDetails(clients, roomId).catch(() => defaultRoom(roomId));
+}
+
+/*
+ * Searches the public rooms of a homeserver for the metadata of a particular
+ */
+export function searchPublicRooms(
+    client: Client,
+    roomId: string
+): Promise<Room> {
+    return cSearchPublicRooms(client, roomId).catch(() => defaultRoom(roomId));
+}
+
+export function convertMXCtoMediaQuery(clientURL: string, mxc: string): string {
+    try {
+        return cConvertMXCtoMediaQuery(clientURL, mxc);
+    } catch {
+        return "";
+    }
+}
+
+export function getRoomIdFromAlias(
+    client: Client,
+    roomAlias: string
+): Promise<RoomAlias> {
+    return cGetRoomIdFromAlias(client, roomAlias).catch(() => ({
+        room_id: roomAlias,
+        servers: [],
+    }));
+}