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/*
* Copyright (C) 2016 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/>.
*/
class Dictionary {
constructor() {
this.db = null;
this.dbVer = 1;
this.entities = null;
}
initDb() {
if (this.db !== null) {
return Promise.reject('database already initialized');
}
this.db = new Dexie('dict');
this.db.version(1).stores({
terms: '++id,expression,reading',
entities: '++,name',
kanji: '++,character',
meta: 'name,value',
});
}
prepareDb() {
this.initDb();
return this.db.meta.get('version').then(row => {
return row ? row.value : 0;
}).catch(() => {
return 0;
}).then(version => {
if (this.dbVer === version) {
return true;
}
const db = this.db;
this.db.close();
this.db = null;
return db.delete().then(() => {
this.initDb();
return false;
});
});
}
sealDb() {
if (this.db === null) {
return Promise.reject('database not initialized');
}
return this.db.meta.put({name: 'version', value: this.dbVer});
}
findTerm(term) {
if (this.db === null) {
return Promise.reject('database not initialized');
}
const results = [];
return this.db.terms.where('expression').equals(term).or('reading').equals(term).each(row => {
results.push({
expression: row.expression,
reading: row.reading,
tags: row.tags.split(' '),
glossary: row.glossary,
id: row.id
});
}).then(() => {
return this.getEntities();
}).then(entities => {
for (const result of results) {
result.entities = entities;
}
return results;
});
}
findKanji(kanji) {
if (this.db === null) {
return Promise.reject('database not initialized');
}
const results = [];
return this.db.kanji.where('character').equals(kanji).each(row => {
results.push({
character: row.character,
onyomi: row.onyomi.split(' '),
kunyomi: row.kunyomi.split(' '),
tags: row.tags.split(' '),
glossary: row.meanings
});
}).then(() => results);
}
getEntities(tags) {
if (this.db === null) {
return Promise.reject('database not initialized');
}
if (this.entities !== null) {
return Promise.resolve(this.entities);
}
return this.db.entities.toArray(rows => {
this.entities = {};
for (const row of rows) {
this.entities[row.name] = row.value;
}
return this.entities;
});
}
importTermDict(indexUrl, callback) {
if (this.db === null) {
return Promise.reject('database not initialized');
}
const indexDir = indexUrl.slice(0, indexUrl.lastIndexOf('/'));
return loadJson(indexUrl).then(index => {
const entities = [];
for (const [name, value] of index.ents) {
entities.push({name, value});
}
return this.db.entities.bulkAdd(entities).then(() => {
if (this.entities === null) {
this.entities = {};
}
for (const entity of entities) {
this.entities[entity.name] = entity.value;
}
}).then(() => {
const loaders = [];
for (let i = 1; i <= index.banks; ++i) {
const bankUrl = `${indexDir}/bank_${i}.json`;
loaders.push(() => {
return loadJson(bankUrl).then(definitions => {
const rows = [];
for (const [expression, reading, tags, ...glossary] of definitions) {
rows.push({expression, reading, tags, glossary});
}
return this.db.terms.bulkAdd(rows).then(() => {
if (callback) {
callback(i, index.banks);
}
});
});
});
}
let chain = Promise.resolve();
for (const loader of loaders) {
chain = chain.then(loader);
}
return chain;
});
});
}
importKanjiDict(indexUrl, callback) {
if (this.db === null) {
return Promise.reject('database not initialized');
}
const indexDir = indexUrl.slice(0, indexUrl.lastIndexOf('/'));
return loadJson(indexUrl).then(index => {
const loaders = [];
for (let i = 1; i <= index.banks; ++i) {
const bankUrl = `${indexDir}/bank_${i}.json`;
loaders.push(() => {
return loadJson(bankUrl).then(definitions => {
const rows = [];
for (const [character, onyomi, kunyomi, tags, ...meanings] of definitions) {
rows.push({character, onyomi, kunyomi, tags, meanings});
}
return this.db.kanji.bulkAdd(rows).then(() => {
if (callback) {
callback(i, index.banks);
}
});
});
});
}
let chain = Promise.resolve();
for (const loader of loaders) {
chain = chain.then(loader);
}
return chain;
});
}
}
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