Files
notesnook/packages/core/database/indexed-collection.js
2022-08-31 07:26:27 +05:00

117 lines
3.3 KiB
JavaScript

/*
This file is part of the Notesnook project (https://notesnook.com/)
Copyright (C) 2022 Streetwriters (Private) Limited
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import { EVENTS } from "../common";
import Indexer from "./indexer";
export default class IndexedCollection {
constructor(context, type, eventManager) {
this.indexer = new Indexer(context, type);
this.eventManager = eventManager;
// this.encryptionKeyFactory = encryptionKeyFactory;
}
clear() {
return this.indexer.clear();
}
async init() {
await this.indexer.init();
}
async addItem(item) {
if (!item.id) throw new Error("The item must contain the id field.");
const exists = this.exists(item.id);
if (!exists) item.dateCreated = item.dateCreated || Date.now();
await this.updateItem(item);
if (!exists) {
await this.indexer.index(item.id);
}
}
async updateItem(item) {
if (!item.id) throw new Error("The item must contain the id field.");
this.eventManager.publish(EVENTS.databaseUpdated, item.id, item);
// if item is newly synced, remote will be true.
if (!item.remote) {
item.dateModified = Date.now();
item.synced = false;
}
// the item has become local now, so remove the flags
delete item.remote;
// if (await this.getEncryptionKey()) {
// const encrypted = await this.indexer.encrypt(
// await this.getEncryptionKey(),
// JSON.stringify(item)
// );
// encrypted.dateModified = item.dateModified;
// encrypted.localOnly = item.localOnly;
// encrypted.id = item.id;
// await this.indexer.write(item.id, encrypted);
// } else
await this.indexer.write(item.id, item);
}
removeItem(id) {
this.eventManager.publish(EVENTS.databaseUpdated, id);
return this.updateItem({
id,
deleted: true
});
}
async deleteItem(id) {
this.eventManager.publish(EVENTS.databaseUpdated, id);
await this.indexer.deindex(id);
return await this.indexer.remove(id);
}
exists(id) {
return this.indexer.exists(id);
}
async getItem(id) {
const item = await this.indexer.read(id);
if (!item) return;
// if ((await this.getEncryptionKey()) && item.iv && item.cipher) {
// return JSON.parse(
// await this.indexer.decrypt(await this.getEncryptionKey(), item)
// );
// } else
return item;
}
async getItems(indices) {
const data = await this.indexer.readMulti(indices);
return Object.fromEntries(data);
}
async getEncryptionKey() {
if (!this.encryptionKeyFactory) return;
if (this.encryptionKey) return this.encryptionKey;
this.encryptionKey = await this.encryptionKeyFactory();
return this.encryptionKey;
}
}