aboutsummaryrefslogtreecommitdiff
path: root/ext/bg/js/audio.js
blob: 972e2b8b128a17dd820f12b9bda72c14c393aad6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
/*
 * 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, audioGetFromSources*/

const audioUrlBuilders = new Map([
    ['jpod101', async (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?${params.join('&')}`;
    }],
    ['jpod101-alternate', async (definition) => {
        const response = await new Promise((resolve, reject) => {
            const xhr = new XMLHttpRequest();
            xhr.open('POST', 'https://www.japanesepod101.com/learningcenter/reference/dictionary_post');
            xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
            xhr.addEventListener('error', () => reject(new Error('Failed to scrape audio data')));
            xhr.addEventListener('load', () => resolve(xhr.responseText));
            xhr.send(`post=dictionary_reference&match_type=exact&search_query=${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 audioUrlNormalize(url, 'https://www.japanesepod101.com', '/learningcenter/reference/');
                }
            } catch (e) {
                // NOP
            }
        }

        throw new Error('Failed to find audio URL');
    }],
    ['jisho', async (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 audioUrlNormalize(url, 'https://jisho.org', '/search/');
                }
            }
        } catch (e) {
            // NOP
        }

        throw new Error('Failed to find audio URL');
    }],
    ['text-to-speech', async (definition, options) => {
        const voiceURI = options.audio.textToSpeechVoice;
        if (!voiceURI) {
            throw new Error('No voice');
        }

        return `tts:?text=${encodeURIComponent(definition.expression)}&voice=${encodeURIComponent(voiceURI)}`;
    }],
    ['text-to-speech-reading', async (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)}`;
    }],
    ['custom', async (definition, options) => {
        const customSourceUrl = options.audio.customSourceUrl;
        return customSourceUrl.replace(/\{([^}]*)\}/g, (m0, m1) => (hasOwn(definition, m1) ? `${definition[m1]}` : m0));
    }]
]);

async function audioGetUrl(definition, mode, options, download) {
    const handler = audioUrlBuilders.get(mode);
    if (typeof handler === 'function') {
        try {
            return await handler(definition, options, download);
        } catch (e) {
            // NOP
        }
    }
    return null;
}

function audioUrlNormalize(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;
}

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';
    }
    return null;
}

async function audioInject(definition, fields, sources, optionsContext) {
    let usesAudio = false;
    for (const fieldValue of Object.values(fields)) {
        if (fieldValue.includes('{audio}')) {
            usesAudio = true;
            break;
        }
    }

    if (!usesAudio) {
        return true;
    }

    try {
        const expressions = definition.expressions;
        const audioSourceDefinition = Array.isArray(expressions) ? expressions[0] : definition;

        const {url} = await audioGetFromSources(audioSourceDefinition, sources, optionsContext, true);
        if (url !== null) {
            const filename = audioBuildFilename(audioSourceDefinition);
            if (filename !== null) {
                definition.audio = {url, filename};
            }
        }

        return true;
    } catch (e) {
        return false;
    }
}