aboutsummaryrefslogtreecommitdiff
path: root/ext/js/language/dictionary-worker.js
blob: dc546657177cf810ae1eb64be55ac86760a18cbf (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
/*
 * Copyright (C) 2021  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/>.
 */

/* global
 * DictionaryDatabase
 * DictionaryImporter
 * DictionaryWorkerMediaLoader
 */

class DictionaryWorker {
    constructor() {
        this._mediaLoader = new DictionaryWorkerMediaLoader();
    }

    prepare() {
        self.addEventListener('message', this._onMessage.bind(this), false);
    }

    // Private

    _onMessage(e) {
        const {action, params} = e.data;
        switch (action) {
            case 'importDictionary':
                this._onMessageWithProgress(params, this._importDictionary.bind(this));
                break;
            case 'deleteDictionary':
                this._onMessageWithProgress(params, this._deleteDictionary.bind(this));
                break;
            case 'getImageResolution.response':
                this._mediaLoader.handleMessage(params);
                break;
        }
    }

    async _onMessageWithProgress(params, handler) {
        const onProgress = (...args) => {
            self.postMessage({
                action: 'progress',
                params: {args}
            });
        };
        let response;
        try {
            const result = await handler(params, onProgress);
            response = {result};
        } catch (e) {
            response = {error: serializeError(e)};
        }
        self.postMessage({action: 'complete', params: response});
    }

    async _importDictionary({details, archiveContent}, onProgress) {
        const dictionaryDatabase = await this._getPreparedDictionaryDatabase();
        try {
            const dictionaryImporter = new DictionaryImporter(this._mediaLoader, onProgress);
            const {result, errors} = await dictionaryImporter.importDictionary(dictionaryDatabase, archiveContent, details);
            return {
                result,
                errors: errors.map((error) => serializeError(error))
            };
        } finally {
            dictionaryDatabase.close();
        }
    }

    async _deleteDictionary({dictionaryTitle}, onProgress) {
        const dictionaryDatabase = await this._getPreparedDictionaryDatabase();
        try {
            return await dictionaryDatabase.deleteDictionary(dictionaryTitle, {rate: 1000}, onProgress);
        } finally {
            dictionaryDatabase.close();
        }
    }

    async _getPreparedDictionaryDatabase() {
        const dictionaryDatabase = new DictionaryDatabase();
        await dictionaryDatabase.prepare();
        return dictionaryDatabase;
    }
}