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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
import { XPCOMUtils } from "resource://gre/modules/XPCOMUtils.sys.mjs";
const lazy = {};
ChromeUtils.defineESModuleGetters(lazy, {
JSONFile: "resource://gre/modules/JSONFile.sys.mjs",
});
// Lazy-load JSON file that backs Storage instances.
XPCOMUtils.defineLazyGetter(lazy, "lazyStore", async function () {
const path = PathUtils.join(
PathUtils.profileDir,
"shield-recipe-client.json"
);
const store = new lazy.JSONFile({ path });
await store.load();
return store;
});
export var Storage = class {
constructor(prefix) {
this.prefix = prefix;
}
/**
* Clear ALL storage data and save to the disk.
*/
static async clearAllStorage() {
const store = await lazy.lazyStore;
store.data = {};
store.saveSoon();
}
/**
* Sets an item in the prefixed storage.
* @returns {Promise}
* @resolves With the stored value, or null.
* @rejects Javascript exception.
*/
async getItem(name) {
const store = await lazy.lazyStore;
const namespace = store.data[this.prefix] || {};
return namespace[name] || null;
}
/**
* Sets an item in the prefixed storage.
* @returns {Promise}
* @resolves When the operation is completed successfully
* @rejects Javascript exception.
*/
async setItem(name, value) {
const store = await lazy.lazyStore;
if (!(this.prefix in store.data)) {
store.data[this.prefix] = {};
}
store.data[this.prefix][name] = value;
store.saveSoon();
}
/**
* Removes a single item from the prefixed storage.
* @returns {Promise}
* @resolves When the operation is completed successfully
* @rejects Javascript exception.
*/
async removeItem(name) {
const store = await lazy.lazyStore;
if (this.prefix in store.data) {
delete store.data[this.prefix][name];
store.saveSoon();
}
}
/**
* Clears all storage for the prefix.
* @returns {Promise}
* @resolves When the operation is completed successfully
* @rejects Javascript exception.
*/
async clear() {
const store = await lazy.lazyStore;
store.data[this.prefix] = {};
store.saveSoon();
}
};
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