Warning bar for MAU limit hit

Somewhat untested, sorry

res/css/views/globals/_MatrixToolbar.scss

@@ -28,6 +28,12 @@ limitations under the License.
     margin-top: -2px;
 }
 
+.mx_MatrixToolbar_info {
+    padding-left: 16px;
+    padding-right: 8px;
+    background-color: $info-bg-color;
+}
+
 .mx_MatrixToolbar_error {
     padding-left: 16px;
     padding-right: 8px;

res/themes/dark/css/_dark.scss

@@ -20,6 +20,7 @@ $focus-brightness: 200%;
 // red warning colour
 $warning-color: #ff0064;
 $warning-bg-color: #DF2A8B;
+$info-bg-color: #2A9EDF;
 
 // groups
 $info-plinth-bg-color: #454545;

res/themes/light/css/_base.scss

@@ -27,6 +27,7 @@ $focus-brightness: 125%;
 $warning-color: #ff0064;
 // background colour for warnings
 $warning-bg-color: #DF2A8B;
+$info-bg-color: #2A9EDF;
 $mention-user-pill-bg-color: #ff0064;
 $other-user-pill-bg-color: rgba(0, 0, 0, 0.1);
 

src/components/structures/LoggedInView.js

@@ -30,10 +30,16 @@ import dis from '../../dispatcher';
 import sessionStore from '../../stores/SessionStore';
 import MatrixClientPeg from '../../MatrixClientPeg';
 import SettingsStore from "../../settings/SettingsStore";
+import RoomListStore from "../../stores/RoomListStore";
 
 import TagOrderActions from '../../actions/TagOrderActions';
 import RoomListActions from '../../actions/RoomListActions';
 
+// We need to fetch each pinned message individually (if we don't already have it)
+// so each pinned message may trigger a request. Limit the number per room for sanity.
+// NB. this is just for server notices rather than pinned messages in general.
+const MAX_PINNED_NOTICES_PER_ROOM = 2;
+
 /**
  * This is what our MatrixChat shows when we are logged in. The precise view is
  * determined by the page_type property.
@@ -80,6 +86,8 @@ const LoggedInView = React.createClass({
         return {
             // use compact timeline view
             useCompactLayout: SettingsStore.getValue('useCompactLayout'),
+            // any currently active server notice events
+            serverNoticeEvents: [],
         };
     },
 
@@ -97,13 +105,18 @@ const LoggedInView = React.createClass({
         );
         this._setStateFromSessionStore();
 
+        this._updateServerNoticeEvents();
+
         this._matrixClient.on("accountData", this.onAccountData);
         this._matrixClient.on("sync", this.onSync);
+        this._matrixClient.on("RoomState.events", this.onRoomStateEvents);
     },
 
     componentWillUnmount: function() {
         document.removeEventListener('keydown', this._onKeyDown);
         this._matrixClient.removeListener("accountData", this.onAccountData);
+        this._matrixClient.removeListener("sync", this.onSync);
+        this._matrixClient.removeListener("RoomState.events", this.onRoomStateEvents);
         if (this._sessionStoreToken) {
             this._sessionStoreToken.remove();
         }
@@ -157,8 +170,42 @@ const LoggedInView = React.createClass({
                 syncErrorData: null,
             });
         }
+
+        if (oldSyncState === 'PREPARED' && syncState === 'SYNCING') {
+            this._updateServerNoticeEvents();
+        }
     },
 
+    onRoomStateEvents: function(ev, state) {
+        const roomLists = RoomListStore.getRoomLists();
+        if (roomLists['m.server_notices'] && roomLists['m.server_notices'].includes(ev.getRoomId())) {
+            this._updateServerNoticeEvents();
+        }
+    },
+
+    _updateServerNoticeEvents: async function() {
+        const roomLists = RoomListStore.getRoomLists();
+        if (!roomLists['m.server_notice']) return [];
+
+        const pinnedEvents = [];
+        for (const room of roomLists['m.server_notice']) {
+            const pinStateEvent = room.currentState.getStateEvents("m.room.pinned_events", "");
+
+            if (!pinStateEvent || !pinStateEvent.getContent().pinned) continue;
+
+            const pinnedEventIds = pinStateEvent.getContent().pinned.slice(0, MAX_PINNED_NOTICES_PER_ROOM);
+            for (const eventId of pinnedEventIds) {
+                const timeline = await this._matrixClient.getEventTimeline(room.getUnfilteredTimelineSet(), eventId, 0);
+                const ev = timeline.getEvents().find(ev => ev.getId() === eventId);
+                if (ev) pinnedEvents.push(ev);
+            }
+        }
+        this.setState({
+            serverNoticeEvents: pinnedEvents,
+        });
+    },
+
+
     _onKeyDown: function(ev) {
             /*
             // Remove this for now as ctrl+alt = alt-gr so this breaks keyboards which rely on alt-gr for numbers
@@ -386,10 +433,18 @@ const LoggedInView = React.createClass({
                 break;
         }
 
+        const mauLimitEvent = this.state.serverNoticeEvents.find((e) => {
+            return e && e.getType() === 'm.server_notice.usage_limit_reached' &&
+                e.getContent().limit &&
+                e.getContent().limit === 'monthly_active_user'
+        });
+
         let topBar;
         const isGuest = this.props.matrixClient.isGuest();
         if (this.state.syncErrorData && this.state.syncErrorData.error.errcode === 'M_MAU_LIMIT_EXCEEDED') {
-            topBar = <ServerLimitBar />;
+            topBar = <ServerLimitBar kind='hard' />;
+        } else if (mauLimitEvent) {
+            topBar = <ServerLimitBar kind='soft' adminContact={mauLimitEvent.getContent().admin_contact} />;
         } else if (this.props.showCookieBar &&
             this.props.config.piwik
         ) {

src/components/views/globals/ServerLimitBar.js

@@ -15,15 +15,60 @@ limitations under the License.
 */
 
 import React from 'react';
+import PropTypes from 'prop-types';
+import classNames from 'classnames';
 import { _t } from '../../../languageHandler';
 
 export default React.createClass({
+    propTypes: {
+        // 'hard' if the logged in user has been locked out, 'soft' if they haven't
+        kind: PropTypes.string,
+        adminContent: PropTypes.string,
+    },
+
+    getDefaultProps: function() {
+        return {
+            kind: 'hard',
+        }
+    },
+
     render: function() {
-        const toolbarClasses = "mx_MatrixToolbar mx_MatrixToolbar_error";
+        const toolbarClasses = {
+            'mx_MatrixToolbar': true,
+        };
+        let content;
+
+        const translateLink = (sub) => {
+            if (this.props.adminContent) {
+                return <a href={this.props.adminContent}>{sub}</a>;
+            } else {
+                return sub;
+            }
+        }
+
+        if (this.props.kind === 'hard') {
+            toolbarClasses['mx_MatrixToolbar_error'] = true;
+            content = _t(
+                "This homeserver has hit its Monthly Active User limit. Please <a>contact your service administrator</a> to continue using the service.",
+                {},
+                {
+                    'a': translateLink,
+                },
+            );
+        } else {
+            toolbarClasses['mx_MatrixToolbar_info'] = true;
+            content = _t(
+                "This homeserver has hit its Monthly Active User limit so some users will not be able to log in. Please <a>contact your service administrator</a> to get this limit increased.",
+                {},
+                {
+                    'a': translateLink,
+                },
+            );
+        }
         return (
-            <div className={toolbarClasses}>
+            <div className={classNames(toolbarClasses)}>
                 <div className="mx_MatrixToolbar_content">
-                    { _t("This homeserver has hit its Monthly Active User limit. Please contact your service administrator to continue using the service.") }
+                    { content }
                 </div>
             </div>
         );

src/i18n/strings/en_EN.json

@@ -464,9 +464,9 @@
     "People": "People",
     "Rooms": "Rooms",
     "Low priority": "Low priority",
-    "System Alerts": "System Alerts",
     "You have no historical rooms": "You have no historical rooms",
     "Historical": "Historical",
+    "System Alerts": "System Alerts",
     "Unable to ascertain that the address this invite was sent to matches one associated with your account.": "Unable to ascertain that the address this invite was sent to matches one associated with your account.",
     "This invitation was sent to an email address which is not associated with this account:": "This invitation was sent to an email address which is not associated with this account:",
     "You may wish to login with a different account, or add this email to this account.": "You may wish to login with a different account, or add this email to this account.",
@@ -678,7 +678,8 @@
     "A new version of Riot is available.": "A new version of Riot is available.",
     "To return to your account in future you need to <u>set a password</u>": "To return to your account in future you need to <u>set a password</u>",
     "Set Password": "Set Password",
-    "This homeserver has hit its Monthly Active User limit. Please contact your service administrator to continue using the service.": "This homeserver has hit its Monthly Active User limit. Please contact your service administrator to continue using the service.",
+    "This homeserver has hit its Monthly Active User limit. Please <a>contact your service administrator</a> to continue using the service.": "This homeserver has hit its Monthly Active User limit. Please <a>contact your service administrator</a> to continue using the service.",
+    "This homeserver has hit its Monthly Active User limit so some users will not be able to log in. Please <a>contact your service administrator</a> to get this limit increased.": "This homeserver has hit its Monthly Active User limit so some users will not be able to log in. Please <a>contact your service administrator</a> to get this limit increased.",
     "Error encountered (%(errorDetail)s).": "Error encountered (%(errorDetail)s).",
     "Checking for an update...": "Checking for an update...",
     "No update available.": "No update available.",