forked from mystiq/hydrogen-web
56 lines
1.9 KiB
TypeScript
56 lines
1.9 KiB
TypeScript
/*
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Copyright 2020 Bruno Windels <bruno@windels.cloud>
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Copyright 2021 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import {MAX_UNICODE} from "./common";
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import {Store} from "../Store";
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import {StateEvent} from "../../types";
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function encodeKey(roomId: string, eventType: string, stateKey: string) {
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return `${roomId}|${eventType}|${stateKey}`;
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}
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export interface RoomStateEntry {
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roomId: string;
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event: StateEvent;
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key: string;
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}
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export class RoomStateStore {
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private _roomStateStore: Store<RoomStateEntry>;
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constructor(idbStore: Store<RoomStateEntry>) {
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this._roomStateStore = idbStore;
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}
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get(roomId: string, type: string, stateKey: string): Promise<RoomStateEntry | undefined> {
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const key = encodeKey(roomId, type, stateKey);
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return this._roomStateStore.get(key);
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}
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set(roomId: string, event: StateEvent): void {
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const key = encodeKey(roomId, event.type, event.state_key);
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const entry = {roomId, event, key};
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this._roomStateStore.put(entry);
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}
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removeAllForRoom(roomId: string): void {
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// exclude both keys as they are theoretical min and max,
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// but we should't have a match for just the room id, or room id with max
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const range = this._roomStateStore.IDBKeyRange.bound(roomId, `${roomId}|${MAX_UNICODE}`, true, true);
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this._roomStateStore.delete(range);
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}
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}
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