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+/*
+ * Copyright (C) 2017-2020 Alex Yatskov <alex@foosoft.net>
+ * Author: Alex Yatskov <alex@foosoft.net>
+ *
+ * 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/>.
+ */
+
+/*global jpIsStringEntirelyKana*/
+
+class AudioUriBuilder {
+ constructor() {
+ this._getUrlHandlers = new Map([
+ ['jpod101', this._getUriJpod101.bind(this)],
+ ['jpod101-alternate', this._getUriJpod101Alternate.bind(this)],
+ ['jisho', this._getUriJisho.bind(this)],
+ ['text-to-speech', this._getUriTextToSpeech.bind(this)],
+ ['text-to-speech-reading', this._getUriTextToSpeechReading.bind(this)],
+ ['custom', this._getUriCustom.bind(this)]
+ ]);
+ }
+
+ normalizeUrl(url, baseUrl, basePath) {
+ if (url) {
+ if (url[0] === '/') {
+ if (url.length >= 2 && url[1] === '/') {
+ // Begins with "//"
+ url = baseUrl.substring(0, baseUrl.indexOf(':') + 1) + url;
+ } else {
+ // Begins with "/"
+ url = baseUrl + url;
+ }
+ } else if (!/^[a-z][a-z0-9\-+.]*:/i.test(url)) {
+ // No URI scheme => relative path
+ url = baseUrl + basePath + url;
+ }
+ }
+ return url;
+ }
+
+ async getUri(definition, source, options) {
+ const handler = this._getUrlHandlers.get(source);
+ if (typeof handler === 'function') {
+ try {
+ return await handler(definition, options);
+ } catch (e) {
+ // NOP
+ }
+ }
+ return null;
+ }
+
+ async _getUriJpod101(definition) {
+ let kana = definition.reading;
+ let kanji = definition.expression;
+
+ if (!kana && jpIsStringEntirelyKana(kanji)) {
+ kana = kanji;
+ kanji = null;
+ }
+
+ const params = [];
+ if (kanji) {
+ params.push(`kanji=${encodeURIComponent(kanji)}`);
+ }
+ if (kana) {
+ params.push(`kana=${encodeURIComponent(kana)}`);
+ }
+
+ return `https://assets.languagepod101.com/dictionary/japanese/audiomp3.php?${params.join('&')}`;
+ }
+
+ async _getUriJpod101Alternate(definition) {
+ const response = await new Promise((resolve, reject) => {
+ const xhr = new XMLHttpRequest();
+ xhr.open('POST', 'https://www.japanesepod101.com/learningcenter/reference/dictionary_post');
+ xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
+ xhr.addEventListener('error', () => reject(new Error('Failed to scrape audio data')));
+ xhr.addEventListener('load', () => resolve(xhr.responseText));
+ xhr.send(`post=dictionary_reference&match_type=exact&search_query=${encodeURIComponent(definition.expression)}`);
+ });
+
+ const dom = new DOMParser().parseFromString(response, 'text/html');
+ for (const row of dom.getElementsByClassName('dc-result-row')) {
+ try {
+ const url = row.querySelector('audio>source[src]').getAttribute('src');
+ const reading = row.getElementsByClassName('dc-vocab_kana').item(0).textContent;
+ if (url && reading && (!definition.reading || definition.reading === reading)) {
+ return this.normalizeUrl(url, 'https://www.japanesepod101.com', '/learningcenter/reference/');
+ }
+ } catch (e) {
+ // NOP
+ }
+ }
+
+ throw new Error('Failed to find audio URL');
+ }
+
+ async _getUriJisho(definition) {
+ const response = await new Promise((resolve, reject) => {
+ const xhr = new XMLHttpRequest();
+ xhr.open('GET', `https://jisho.org/search/${definition.expression}`);
+ xhr.addEventListener('error', () => reject(new Error('Failed to scrape audio data')));
+ xhr.addEventListener('load', () => resolve(xhr.responseText));
+ xhr.send();
+ });
+
+ const dom = new DOMParser().parseFromString(response, 'text/html');
+ try {
+ const audio = dom.getElementById(`audio_${definition.expression}:${definition.reading}`);
+ if (audio !== null) {
+ const url = audio.getElementsByTagName('source').item(0).getAttribute('src');
+ if (url) {
+ return this.normalizeUrl(url, 'https://jisho.org', '/search/');
+ }
+ }
+ } catch (e) {
+ // NOP
+ }
+
+ throw new Error('Failed to find audio URL');
+ }
+
+ async _getUriTextToSpeech(definition, options) {
+ const voiceURI = options.audio.textToSpeechVoice;
+ if (!voiceURI) {
+ throw new Error('No voice');
+ }
+
+ return `tts:?text=${encodeURIComponent(definition.expression)}&voice=${encodeURIComponent(voiceURI)}`;
+ }
+
+ async _getUriTextToSpeechReading(definition, options) {
+ const voiceURI = options.audio.textToSpeechVoice;
+ if (!voiceURI) {
+ throw new Error('No voice');
+ }
+
+ return `tts:?text=${encodeURIComponent(definition.reading || definition.expression)}&voice=${encodeURIComponent(voiceURI)}`;
+ }
+
+ async _getUriCustom(definition, options) {
+ const customSourceUrl = options.audio.customSourceUrl;
+ return customSourceUrl.replace(/\{([^}]*)\}/g, (m0, m1) => (hasOwn(definition, m1) ? `${definition[m1]}` : m0));
+ }
+}