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/*
* Copyright (C) 2023-2024 Yomitan Authors
* Copyright (C) 2021-2022 Yomichan Authors
*
* 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 <https://www.gnu.org/licenses/>.
*/
import {ExtensionError} from '../core/extension-error.js';
import {DictionaryImporterMediaLoader} from './dictionary-importer-media-loader.js';
export class DictionaryWorker {
constructor() {
/** @type {DictionaryImporterMediaLoader} */
this._dictionaryImporterMediaLoader = new DictionaryImporterMediaLoader();
}
/**
* @param {ArrayBuffer} archiveContent
* @param {import('dictionary-importer').ImportDetails} details
* @param {?import('dictionary-worker').ImportProgressCallback} onProgress
* @returns {Promise<import('dictionary-importer').ImportResult>}
*/
importDictionary(archiveContent, details, onProgress) {
return this._invoke(
'importDictionary',
{details, archiveContent},
[archiveContent],
onProgress,
this._formatImportDictionaryResult.bind(this)
);
}
/**
* @param {string} dictionaryTitle
* @param {?import('dictionary-worker').DeleteProgressCallback} onProgress
* @returns {Promise<void>}
*/
deleteDictionary(dictionaryTitle, onProgress) {
return this._invoke('deleteDictionary', {dictionaryTitle}, [], onProgress, null);
}
/**
* @param {string[]} dictionaryNames
* @param {boolean} getTotal
* @returns {Promise<import('dictionary-database').DictionaryCounts>}
*/
getDictionaryCounts(dictionaryNames, getTotal) {
return this._invoke('getDictionaryCounts', {dictionaryNames, getTotal}, [], null, null);
}
// Private
/**
* @template [TParams=import('core').SerializableObject]
* @template [TResponseRaw=unknown]
* @template [TResponse=unknown]
* @param {string} action
* @param {TParams} params
* @param {Transferable[]} transfer
* @param {?(arg: import('core').SafeAny) => void} onProgress
* @param {?(result: TResponseRaw) => TResponse} formatResult
*/
_invoke(action, params, transfer, onProgress, formatResult) {
return new Promise((resolve, reject) => {
const worker = new Worker('/js/dictionary/dictionary-worker-main.js', {type: 'module'});
/** @type {import('dictionary-worker').InvokeDetails<TResponseRaw, TResponse>} */
const details = {
complete: false,
worker,
resolve,
reject,
onMessage: null,
onProgress,
formatResult
};
// Ugly typecast below due to not being able to explicitly state the template types
/** @type {(event: MessageEvent<import('dictionary-worker').MessageData<TResponseRaw>>) => void} */
const onMessage = /** @type {(details: import('dictionary-worker').InvokeDetails<TResponseRaw, TResponse>, event: MessageEvent<import('dictionary-worker').MessageData<TResponseRaw>>) => void} */ (this._onMessage).bind(this, details);
details.onMessage = onMessage;
worker.addEventListener('message', onMessage);
worker.postMessage({action, params}, transfer);
});
}
/**
* @template [TResponseRaw=unknown]
* @template [TResponse=unknown]
* @param {import('dictionary-worker').InvokeDetails<TResponseRaw, TResponse>} details
* @param {MessageEvent<import('dictionary-worker').MessageData<TResponseRaw>>} event
*/
_onMessage(details, event) {
if (details.complete) { return; }
const {action, params} = event.data;
switch (action) {
case 'complete':
{
const {worker, resolve, reject, onMessage, formatResult} = details;
if (worker === null || onMessage === null || resolve === null || reject === null) { return; }
details.complete = true;
details.worker = null;
details.resolve = null;
details.reject = null;
details.onMessage = null;
details.onProgress = null;
details.formatResult = null;
worker.removeEventListener('message', onMessage);
worker.terminate();
this._onMessageComplete(params, resolve, reject, formatResult);
}
break;
case 'progress':
this._onMessageProgress(params, details.onProgress);
break;
case 'getImageDetails':
{
const {worker} = details;
if (worker === null) { return; }
void this._onMessageGetImageDetails(params, worker);
}
break;
}
}
/**
* @template [TResponseRaw=unknown]
* @template [TResponse=unknown]
* @param {import('dictionary-worker').MessageCompleteParams<TResponseRaw>} params
* @param {(result: TResponse) => void} resolve
* @param {(reason?: import('core').RejectionReason) => void} reject
* @param {?(result: TResponseRaw) => TResponse} formatResult
*/
_onMessageComplete(params, resolve, reject, formatResult) {
const {error} = params;
if (typeof error !== 'undefined') {
reject(ExtensionError.deserialize(error));
} else {
const {result} = params;
if (typeof formatResult === 'function') {
let result2;
try {
result2 = formatResult(result);
} catch (e) {
reject(e);
return;
}
resolve(result2);
} else {
// If formatResult is not provided, the response is assumed to be the same type
// For some reason, eslint thinks the TResponse type is undefined
// eslint-disable-next-line jsdoc/no-undefined-types
resolve(/** @type {TResponse} */ (/** @type {unknown} */ (result)));
}
}
}
/**
* @param {import('dictionary-worker').MessageProgressParams} params
* @param {?(...args: unknown[]) => void} onProgress
*/
_onMessageProgress(params, onProgress) {
if (typeof onProgress !== 'function') { return; }
const {args} = params;
onProgress(...args);
}
/**
* @param {import('dictionary-worker').MessageGetImageDetailsParams} params
* @param {Worker} worker
*/
async _onMessageGetImageDetails(params, worker) {
const {id, content, mediaType} = params;
/** @type {Transferable[]} */
const transfer = [];
let response;
try {
const result = await this._dictionaryImporterMediaLoader.getImageDetails(content, mediaType, transfer);
response = {id, result};
} catch (e) {
response = {id, error: ExtensionError.serialize(e)};
}
worker.postMessage({action: 'getImageDetails.response', params: response}, transfer);
}
/**
* @param {import('dictionary-worker').MessageCompleteResultSerialized} response
* @returns {import('dictionary-worker').MessageCompleteResult}
*/
_formatImportDictionaryResult(response) {
const {result, errors} = response;
return {
result,
errors: errors.map((error) => ExtensionError.deserialize(error))
};
}
}
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