mirror of
https://github.com/streetwriters/notesnook.git
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77 lines
2.2 KiB
TypeScript
77 lines
2.2 KiB
TypeScript
/*
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This file is part of the Notesnook project (https://notesnook.com/)
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Copyright (C) 2023 Streetwriters (Private) Limited
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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import localforage from "localforage";
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import FileHandle from "./src/filehandle";
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import { IStreamableFS } from "./src/interfaces";
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import { File } from "./src/types";
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export class StreamableFS implements IStreamableFS {
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private storage: LocalForage;
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/**
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* @param db name of the indexeddb database
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*/
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constructor(db: string) {
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this.storage = localforage.createInstance({
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storeName: "streamable-fs",
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name: db,
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driver: [localforage.INDEXEDDB]
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});
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}
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async createFile(
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filename: string,
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size: number,
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type: string
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): Promise<FileHandle> {
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if (await this.exists(filename)) throw new Error("File already exists.");
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const file: File = await this.storage.setItem<File>(filename, {
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filename,
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size,
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type,
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chunks: 0
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});
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return new FileHandle(this.storage, file);
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}
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async readFile(filename: string): Promise<FileHandle | undefined> {
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const file = await this.storage.getItem<File>(filename);
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if (!file) return undefined;
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return new FileHandle(this.storage, file);
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}
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async exists(filename: string): Promise<boolean> {
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const file = await this.storage.getItem<File>(filename);
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return !!file;
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}
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async deleteFile(filename: string): Promise<boolean> {
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const handle = await this.readFile(filename);
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if (!handle) return true;
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await handle.delete();
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return true;
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}
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async clear(): Promise<void> {
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await this.storage.clear();
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}
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}
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