Update extensions for some files with types

This migrates one bucket of files using some amount of Flow typing to mark them
as TypeScript instead. The remaining type errors are fixed in subsequent
commits.

src/mjolnir/Mjolnir.ts

@@ -0,0 +1,190 @@
+/*
+Copyright 2019 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 {MatrixClientPeg} from "../MatrixClientPeg";
+import {ALL_RULE_TYPES, BanList} from "./BanList";
+import SettingsStore from "../settings/SettingsStore";
+import {_t} from "../languageHandler";
+import dis from "../dispatcher/dispatcher";
+import {SettingLevel} from "../settings/SettingLevel";
+
+// TODO: Move this and related files to the js-sdk or something once finalized.
+
+export class Mjolnir {
+    static _instance: Mjolnir = null;
+
+    _lists: BanList[] = [];
+    _roomIds: string[] = [];
+    _mjolnirWatchRef = null;
+    _dispatcherRef = null;
+
+    constructor() {
+    }
+
+    get roomIds(): string[] {
+        return this._roomIds;
+    }
+
+    get lists(): BanList[] {
+        return this._lists;
+    }
+
+    start() {
+        this._mjolnirWatchRef = SettingsStore.watchSetting("mjolnirRooms", null, this._onListsChanged.bind(this));
+
+        this._dispatcherRef = dis.register(this._onAction);
+        dis.dispatch({
+            action: 'do_after_sync_prepared',
+            deferred_action: {action: 'setup_mjolnir'},
+        });
+    }
+
+    _onAction = (payload) => {
+        if (payload['action'] === 'setup_mjolnir') {
+            console.log("Setting up Mjolnir: after sync");
+            this.setup();
+        }
+    };
+
+    setup() {
+        if (!MatrixClientPeg.get()) return;
+        this._updateLists(SettingsStore.getValue("mjolnirRooms"));
+        MatrixClientPeg.get().on("RoomState.events", this._onEvent);
+    }
+
+    stop() {
+        if (this._mjolnirWatchRef) {
+            SettingsStore.unwatchSetting(this._mjolnirWatchRef);
+            this._mjolnirWatchRef = null;
+        }
+
+        if (this._dispatcherRef) {
+            dis.unregister(this._dispatcherRef);
+            this._dispatcherRef = null;
+        }
+
+        if (!MatrixClientPeg.get()) return;
+        MatrixClientPeg.get().removeListener("RoomState.events", this._onEvent);
+    }
+
+    async getOrCreatePersonalList(): Promise<BanList> {
+        let personalRoomId = SettingsStore.getValue("mjolnirPersonalRoom");
+        if (!personalRoomId) {
+            const resp = await MatrixClientPeg.get().createRoom({
+                name: _t("My Ban List"),
+                topic: _t("This is your list of users/servers you have blocked - don't leave the room!"),
+                preset: "private_chat",
+            });
+            personalRoomId = resp['room_id'];
+            await SettingsStore.setValue(
+                "mjolnirPersonalRoom", null, SettingLevel.ACCOUNT, personalRoomId);
+            await SettingsStore.setValue(
+                "mjolnirRooms", null, SettingLevel.ACCOUNT, [personalRoomId, ...this._roomIds]);
+        }
+        if (!personalRoomId) {
+            throw new Error("Error finding a room ID to use");
+        }
+
+        let list = this._lists.find(b => b.roomId === personalRoomId);
+        if (!list) list = new BanList(personalRoomId);
+        // we don't append the list to the tracked rooms because it should already be there.
+        // we're just trying to get the caller some utility access to the list
+
+        return list;
+    }
+
+    // get without creating the list
+    getPersonalList(): BanList {
+        const personalRoomId = SettingsStore.getValue("mjolnirPersonalRoom");
+        if (!personalRoomId) return null;
+
+        let list = this._lists.find(b => b.roomId === personalRoomId);
+        if (!list) list = new BanList(personalRoomId);
+        // we don't append the list to the tracked rooms because it should already be there.
+        // we're just trying to get the caller some utility access to the list
+
+        return list;
+    }
+
+    async subscribeToList(roomId: string) {
+        const roomIds = [...this._roomIds, roomId];
+        await SettingsStore.setValue("mjolnirRooms", null, SettingLevel.ACCOUNT, roomIds);
+        this._lists.push(new BanList(roomId));
+    }
+
+    async unsubscribeFromList(roomId: string) {
+        const roomIds = this._roomIds.filter(r => r !== roomId);
+        await SettingsStore.setValue("mjolnirRooms", null, SettingLevel.ACCOUNT, roomIds);
+        this._lists = this._lists.filter(b => b.roomId !== roomId);
+    }
+
+    _onEvent = (event) => {
+        if (!MatrixClientPeg.get()) return;
+        if (!this._roomIds.includes(event.getRoomId())) return;
+        if (!ALL_RULE_TYPES.includes(event.getType())) return;
+
+        this._updateLists(this._roomIds);
+    };
+
+    _onListsChanged(settingName, roomId, atLevel, newValue) {
+        // We know that ban lists are only recorded at one level so we don't need to re-eval them
+        this._updateLists(newValue);
+    }
+
+    _updateLists(listRoomIds: string[]) {
+        if (!MatrixClientPeg.get()) return;
+
+        console.log("Updating Mjolnir ban lists to: " + listRoomIds);
+        this._lists = [];
+        this._roomIds = listRoomIds || [];
+        if (!listRoomIds) return;
+
+        for (const roomId of listRoomIds) {
+            // Creating the list updates it
+            this._lists.push(new BanList(roomId));
+        }
+    }
+
+    isServerBanned(serverName: string): boolean {
+        for (const list of this._lists) {
+            for (const rule of list.serverRules) {
+                if (rule.isMatch(serverName)) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+    isUserBanned(userId: string): boolean {
+        for (const list of this._lists) {
+            for (const rule of list.userRules) {
+                if (rule.isMatch(userId)) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+    static sharedInstance(): Mjolnir {
+        if (!Mjolnir._instance) {
+            Mjolnir._instance = new Mjolnir();
+        }
+        return Mjolnir._instance;
+    }
+}
+