BridgeError: Add display of network name and affected users

Signed-off-by: Kai A. Hiller <KaiAlexHiller@web.de>

src/components/views/messages/BridgeError.js

@@ -16,46 +16,123 @@ limitations under the License.
 
 import React from 'react';
 import PropTypes from 'prop-types';
+import { EventTimeline } from 'matrix-js-sdk';
 
 import { _t } from '../../../languageHandler';
-import sdk from '../../../index';
-import MatrixClientPeg from '../../../MatrixClientPeg';
-import { unicodeToShortcode } from '../../../HtmlUtils';
 
 export default class BridgeError extends React.PureComponent {
     static propTypes = {
-        matrixClient: PropTypes.object.isRequired,
         mxEvent: PropTypes.object.isRequired,
+        room: PropTypes.object.isRequired,
     };
 
     constructor(props) {
         super(props);
         // this.state = {}
     }
 
-    _get_relations() {
+    /**
+     * Returns all bridge error relations for this event.
+     *
+     * @returns {MatrixEvent[]}
+     */
+    _getRelations() {
         const { mxEvent, room } = this.props;
 
         // const room = matrixClient.getRoom(mxEvent.getRoomId());
         const timelineSet = room.getUnfilteredTimelineSet();
-        return timelineSet.getRelationsForEvent(
+        const relations = timelineSet.getRelationsForEvent(
             mxEvent.getId(),
             "m.reference",
             "de.nasnotfound.bridge_error",
-        );        
+        );
+
+        return relations ? relations.getRelations() : [];
+    }
+
+    /**
+     * Returns a list of all users matched by the regex at the time of the event.
+     *
+     * @param {string} regexStr
+     * @returns {RoomMember[]}
+     */
+    _findMembersFromRegex(regexStr) {
+        const { room } = this.props;
+        const regex = new RegExp(regexStr);
+
+        // TODO[V02460@gmail.com]: Get room state at the proper point in time
+        const roomState = room.getLiveTimeline().getState(EventTimeline.FORWARDS);
+        const members = roomState.getMembers();
+
+        return members.filter(m => regex.test(m.userId));
+    }
+
+    /**
+     * Returns the network name and the affected users for the given relation.
+     *
+     * @param {MatrixEvent} relation
+     * @returns {{networkName: string, affectedUsers: RoomMember[]}}
+     */
+    _getRelationInfo(relation) {
+        if (!relation.event || !relation.event.content) {
+            return { networkName: "", affected_users: [] };
+        }
+        const content = relation.event.content;
+
+        const networkName = (typeof content.network_name === 'string' ?
+            content.network_name :
+            ""
+        );
+        const affectedUsersRegex = (Array.isArray(content.affected_users) ?
+            content.affected_users :
+            []
+        );
+        const affectedUsers = affectedUsersRegex.flatMap(
+            this._findMembersFromRegex.bind(this),
+        );
+
+        return { networkName, affectedUsers };
+    }
+
+    /**
+     * Returns the rendered string for the given relation.
+     *
+     * @param {{networkName: string, affectedUsers: RoomMember[]}} relationInfo
+     * @return {string}
+     */
+    _renderInfo(relationInfo) {
+        const usernames = relationInfo.affected_users.map(u => u.name);
+
+        if (relationInfo.networkName) {
+            return _t(
+                "%(networkName)s: %(affectedUsers)s",
+                {
+                    networkName: relationInfo.networkName,
+                    affectedUsers: usernames.join(", "),
+                },
+            );
+        } else {
+            return _t(
+                "Affected users: %(affectedUsers)s",
+                { affectedUsers: relationInfo.affectedUsers },
+            );
+        }
     }
 
     render() {
-        const relations = this._get_relations()
-        const isBridgeError = !!(relations && relations.getRelations());
+        const relations = this._getRelations();
+        const isBridgeError = !!relations.length;
 
         if (!isBridgeError) {
-            return null
+            return null;
         }
 
+        const relationInfos = relations.map(this._getRelationInfo.bind(this));
+        const renderedInfos = relationInfos.map(this._renderInfo.bind(this));
+
         return (
             <div className="mx_BridgeError">
-                ⚠ {_t("Event not delivered")}
+                ⚠ {_t("Event not delivered") + " (" + renderedInfos.join("; ") + ")" }
             </div>
         );
     }

src/i18n/strings/en_EN.json

@@ -917,6 +917,8 @@
     "When someone puts a URL in their message, a URL preview can be shown to give more information about that link such as the title, description, and an image from the website.": "When someone puts a URL in their message, a URL preview can be shown to give more information about that link such as the title, description, and an image from the website.",
     "Members": "Members",
     "Files": "Files",
+    "%(networkName)s: %(affectedUsers)s": "%(networkName)s: %(affectedUsers)s",
+    "Affected users: %(affectedUsers)s": "Affected users: %(affectedUsers)s",
     "Event not delivered": "Event not delivered",
     "Sunday": "Sunday",
     "Monday": "Monday",