153 lines
3.5 KiB
TypeScript
153 lines
3.5 KiB
TypeScript
// Copyright 2020-2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import type {
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StorageAccessType as Access,
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StorageInterface,
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} from '../types/Storage.d';
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import { User } from './storage/User';
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import { Blocked } from './storage/Blocked';
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import { assertDev } from '../util/assert';
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import Data from '../sql/Client';
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import type { SignalProtocolStore } from '../SignalProtocolStore';
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import * as log from '../logging/log';
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export class Storage implements StorageInterface {
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public readonly user: User;
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public readonly blocked: Blocked;
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private ready = false;
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private readyCallbacks: Array<() => void> = [];
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private items: Partial<Access> = Object.create(null);
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private privProtocol: SignalProtocolStore | undefined;
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constructor() {
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this.user = new User(this);
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this.blocked = new Blocked(this);
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window.storage = this;
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}
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get protocol(): SignalProtocolStore {
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assertDev(
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this.privProtocol !== undefined,
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'SignalProtocolStore not initialized'
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);
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return this.privProtocol;
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}
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set protocol(value: SignalProtocolStore) {
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this.privProtocol = value;
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}
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// `StorageInterface` implementation
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public get<K extends keyof Access, V extends Access[K]>(
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key: K
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): V | undefined;
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public get<K extends keyof Access, V extends Access[K]>(
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key: K,
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defaultValue: V
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): V;
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public get<K extends keyof Access, V extends Access[K]>(
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key: K,
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defaultValue?: V
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): V | undefined {
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if (!this.ready) {
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log.warn('Called storage.get before storage is ready. key:', key);
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}
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const item = this.items[key];
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if (item === undefined) {
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return defaultValue;
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}
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return item as V;
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}
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public async put<K extends keyof Access>(
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key: K,
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value: Access[K]
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): Promise<void> {
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if (!this.ready) {
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log.warn('Called storage.put before storage is ready. key:', key);
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}
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this.items[key] = value;
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await window.Signal.Data.createOrUpdateItem({ id: key, value });
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window.reduxActions?.items.putItemExternal(key, value);
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}
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public async remove<K extends keyof Access>(key: K): Promise<void> {
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if (!this.ready) {
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log.warn('Called storage.remove before storage is ready. key:', key);
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}
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delete this.items[key];
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await Data.removeItemById(key);
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window.reduxActions?.items.removeItemExternal(key);
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}
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// Regular methods
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public onready(callback: () => void): void {
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if (this.ready) {
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callback();
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} else {
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this.readyCallbacks.push(callback);
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}
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}
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public async fetch(): Promise<void> {
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this.reset();
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Object.assign(this.items, await Data.getAllItems());
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this.ready = true;
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this.callListeners();
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}
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public reset(): void {
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this.ready = false;
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this.items = Object.create(null);
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}
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public getItemsState(): Partial<Access> {
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if (!this.ready) {
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log.warn('Called getItemsState before storage is ready');
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}
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log.info('Storage/getItemsState: now preparing copy of items...');
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const state = Object.create(null);
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// TypeScript isn't smart enough to figure out the types automatically.
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const { items } = this;
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const allKeys = Object.keys(items) as Array<keyof typeof items>;
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for (const key of allKeys) {
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state[key] = items[key];
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}
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return state;
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}
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private callListeners(): void {
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if (!this.ready) {
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return;
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}
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const callbacks = this.readyCallbacks;
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this.readyCallbacks = [];
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callbacks.forEach(callback => callback());
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}
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}
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