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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(mode, definition, options) {
const handler = this._getUrlHandlers.get(mode);
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));
}
}
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