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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 { PromiseWorker } from "resource://gre/modules/workers/PromiseWorker.mjs";
/**
* Boilerplate to connect with the main thread PromiseWorker.
*/
const worker = new PromiseWorker.AbstractWorker();
worker.dispatch = function (method, args = []) {
return agent[method](...args);
};
worker.postMessage = function (message, ...transfers) {
self.postMessage(message, ...transfers);
};
worker.close = function () {
self.close();
};
self.addEventListener("message", msg => worker.handleMessage(msg));
self.addEventListener("unhandledrejection", function (error) {
throw error.reason;
});
/**
* Stores and manages the Domain-to-Categories Map.
*/
class Agent {
/**
* @type {Map<string, Array<number>>} Hashes mapped to categories and values.
*/
#map = new Map();
/**
* Converts data from the array directly into a Map.
*
* @param {Array<ArrayBuffer>} fileContents Files
* @returns {boolean} Returns whether the Map contains results.
*/
populateMap(fileContents) {
this.#map.clear();
for (let fileContent of fileContents) {
let obj;
try {
obj = JSON.parse(new TextDecoder().decode(fileContent));
} catch (ex) {
return false;
}
for (let objKey in obj) {
if (Object.hasOwn(obj, objKey)) {
this.#map.set(objKey, obj[objKey]);
}
}
}
return this.#map.size > 0;
}
/**
* Retrieves scores for the hash from the map.
*
* @param {string} hash Key to look up in the map.
* @returns {Array<number>}
*/
getScores(hash) {
if (this.#map.has(hash)) {
return this.#map.get(hash);
}
return [];
}
/**
* Empties the internal map.
*
* @returns {boolean}
*/
emptyMap() {
this.#map.clear();
return true;
}
/**
* Test only function to allow the map to contain information without
* having to go through Remote Settings.
*
* @param {object} obj The data to directly import into the Map.
* @returns {boolean} Whether the map contains values.
*/
overrideMapForTests(obj) {
this.#map.clear();
for (let objKey in obj) {
if (Object.hasOwn(obj, objKey)) {
this.#map.set(objKey, obj[objKey]);
}
}
return this.#map.size > 0;
}
}
const agent = new Agent();
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