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-rw-r--r--ext/bg/js/audio.js154
1 files changed, 154 insertions, 0 deletions
diff --git a/ext/bg/js/audio.js b/ext/bg/js/audio.js
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+/*
+ * Copyright (C) 2017 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 <http://www.gnu.org/licenses/>.
+ */
+
+
+async function audioBuildUrl(definition, mode, cache={}) {
+ if (mode === 'jpod101') {
+ let kana = definition.reading;
+ let kanji = definition.expression;
+
+ if (!kana && wanakana.isHiragana(kanji)) {
+ kana = kanji;
+ kanji = null;
+ }
+
+ const params = [];
+ if (kanji) {
+ params.push(`kanji=${encodeURIComponent(kanji)}`);
+ }
+ if (kana) {
+ params.push(`kana=${encodeURIComponent(kana)}`);
+ }
+
+ const url = `https://assets.languagepod101.com/dictionary/japanese/audiomp3.php?${params.join('&')}`;
+ return Promise.resolve(url);
+ } else if (mode === 'jpod101-alternate') {
+ return new Promise((resolve, reject) => {
+ const response = cache[definition.expression];
+ if (response) {
+ resolve(response);
+ } else {
+ const data = {
+ post: 'dictionary_reference',
+ match_type: 'exact',
+ search_query: definition.expression
+ };
+
+ const params = [];
+ for (const key in data) {
+ params.push(`${encodeURIComponent(key)}=${encodeURIComponent(data[key])}`);
+ }
+
+ const xhr = new XMLHttpRequest();
+ xhr.open('POST', 'https://www.japanesepod101.com/learningcenter/reference/dictionary_post');
+ xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
+ xhr.addEventListener('error', () => reject('failed to scrape audio data'));
+ xhr.addEventListener('load', () => {
+ cache[definition.expression] = xhr.responseText;
+ resolve(xhr.responseText);
+ });
+
+ xhr.send(params.join('&'));
+ }
+ }).then(response => {
+ const dom = new DOMParser().parseFromString(response, 'text/html');
+ for (const row of dom.getElementsByClassName('dc-result-row')) {
+ try {
+ const url = row.getElementsByClassName('ill-onebuttonplayer').item(0).getAttribute('data-url');
+ const reading = row.getElementsByClassName('dc-vocab_kana').item(0).innerText;
+ if (url && reading && (!definition.reading || definition.reading === reading)) {
+ return url;
+ }
+ } catch (e) {
+ // NOP
+ }
+ }
+ });
+ } else if (mode === 'jisho') {
+ return new Promise((resolve, reject) => {
+ const response = cache[definition.expression];
+ if (response) {
+ resolve(response);
+ } else {
+ const xhr = new XMLHttpRequest();
+ xhr.open('GET', `http://jisho.org/search/${definition.expression}`);
+ xhr.addEventListener('error', () => reject('failed to scrape audio data'));
+ xhr.addEventListener('load', () => {
+ cache[definition.expression] = xhr.responseText;
+ resolve(xhr.responseText);
+ });
+
+ xhr.send();
+ }
+ }).then(response => {
+ try {
+ const dom = new DOMParser().parseFromString(response, 'text/html');
+ const audio = dom.getElementById(`audio_${definition.expression}:${definition.reading}`);
+ if (audio) {
+ return audio.getElementsByTagName('source').item(0).getAttribute('src');
+ }
+ } catch (e) {
+ // NOP
+ }
+ });
+ }
+ else {
+ return Promise.resolve();
+ }
+}
+
+function audioBuildFilename(definition) {
+ if (definition.reading || definition.expression) {
+ let filename = 'yomichan';
+ if (definition.reading) {
+ filename += `_${definition.reading}`;
+ }
+ if (definition.expression) {
+ filename += `_${definition.expression}`;
+ }
+
+ return filename += '.mp3';
+ }
+}
+
+async function audioInject(definition, fields, mode) {
+ let usesAudio = false;
+ for (const name in fields) {
+ if (fields[name].includes('{audio}')) {
+ usesAudio = true;
+ break;
+ }
+ }
+
+ if (!usesAudio) {
+ return true;
+ }
+
+ try {
+ const url = await audioBuildUrl(definition, mode);
+ const filename = audioBuildFilename(definition);
+
+ if (url && filename) {
+ definition.audio = {url, filename};
+ }
+
+ return true;
+ } catch (e) {
+ return false;
+ }
+}