Convert Bridge Settings Tab to Typescript

src/components/views/settings/tabs/room/BridgeSettingsTab.tsx

@@ -0,0 +1,98 @@
+/*
+Copyright 2019, 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 React from "react";
+import {Room} from "matrix-js-sdk/src/models/room";
+import {MatrixEvent} from "matrix-js-sdk/src/models/event";
+
+import {_t} from "../../../../../languageHandler";
+import {MatrixClientPeg} from "../../../../../MatrixClientPeg";
+import BridgeTile from "../../BridgeTile";
+
+const BRIDGE_EVENT_TYPES = [
+    "uk.half-shot.bridge",
+    // m.bridge
+];
+
+const BRIDGES_LINK = "https://matrix.org/bridges/";
+
+interface IProps {
+    roomId: string;
+}
+
+export default class BridgeSettingsTab extends React.Component<IProps> {
+    private renderBridgeCard(event: MatrixEvent, room: Room) {
+        const content = event.getContent();
+        if (!content || !content.channel || !content.protocol) {
+            return null;
+        }
+        return <BridgeTile key={event.getId()} room={room} ev={event} />;
+    }
+
+    static getBridgeStateEvents(roomId: string) {
+        const client = MatrixClientPeg.get();
+        const roomState = client.getRoom(roomId).currentState;
+
+        return [].concat(...BRIDGE_EVENT_TYPES.map((typeName) =>
+            Array.from(roomState.events.get(typeName).values()),
+        ));
+    }
+
+    render() {
+        // This settings tab will only be invoked if the following function returns more
+        // than 0 events, so no validation is needed at this stage.
+        const bridgeEvents = BridgeSettingsTab.getBridgeStateEvents(this.props.roomId);
+        const client = MatrixClientPeg.get();
+        const room = client.getRoom(this.props.roomId);
+
+        let content: JSX.Element;
+        if (bridgeEvents.length > 0) {
+            content = <div>
+                <p>{_t(
+                    "This room is bridging messages to the following platforms. " +
+                    "<a>Learn more.</a>", {},
+                    {
+                        // TODO: We don't have this link yet: this will prevent the translators
+                        // having to re-translate the string when we do.
+                        a: sub => <a href={BRIDGES_LINK} target="_blank" rel="noreferrer noopener">{sub}</a>,
+                    },
+                )}</p>
+                <ul className="mx_RoomSettingsDialog_BridgeList">
+                    { bridgeEvents.map((event) => this.renderBridgeCard(event, room)) }
+                </ul>
+            </div>;
+        } else {
+            content = <p>{_t(
+                "This room isn’t bridging messages to any platforms. " +
+                "<a>Learn more.</a>", {},
+                {
+                    // TODO: We don't have this link yet: this will prevent the translators
+                    // having to re-translate the string when we do.
+                    a: sub => <a href={BRIDGES_LINK} target="_blank" rel="noreferrer noopener">{sub}</a>,
+                },
+            )}</p>;
+        }
+
+        return (
+            <div className="mx_SettingsTab">
+                <div className="mx_SettingsTab_heading">{_t("Bridges")}</div>
+                <div className='mx_SettingsTab_section mx_SettingsTab_subsectionText'>
+                    {content}
+                </div>
+            </div>
+        );
+    }
+}