yomichan/ext/bg/js/anki.js
2020-08-09 13:17:15 -04:00

148 lines
4.4 KiB
JavaScript

/*
* Copyright (C) 2016-2020 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/>.
*/
class AnkiConnect {
constructor(server) {
this._enabled = false;
this._server = server;
this._localVersion = 2;
this._remoteVersion = 0;
this._versionCheckPromise = null;
}
setServer(server) {
this._server = server;
}
getServer() {
return this._server;
}
setEnabled(enabled) {
this._enabled = enabled;
}
isEnabled() {
return this._enabled;
}
async addNote(note) {
if (!this._enabled) { return null; }
await this._checkVersion();
return await this._invoke('addNote', {note});
}
async canAddNotes(notes) {
if (!this._enabled) { return []; }
await this._checkVersion();
return await this._invoke('canAddNotes', {notes});
}
async getDeckNames() {
if (!this._enabled) { return []; }
await this._checkVersion();
return await this._invoke('deckNames');
}
async getModelNames() {
if (!this._enabled) { return []; }
await this._checkVersion();
return await this._invoke('modelNames');
}
async getModelFieldNames(modelName) {
if (!this._enabled) { return []; }
await this._checkVersion();
return await this._invoke('modelFieldNames', {modelName});
}
async guiBrowse(query) {
if (!this._enabled) { return []; }
await this._checkVersion();
return await this._invoke('guiBrowse', {query});
}
async storeMediaFile(fileName, dataBase64) {
if (!this._enabled) {
throw new Error('AnkiConnect not enabled');
}
await this._checkVersion();
return await this._invoke('storeMediaFile', {filename: fileName, data: dataBase64});
}
async findNoteIds(notes, duplicateScope) {
if (!this._enabled) { return []; }
await this._checkVersion();
const actions = notes.map((note) => {
let query = (duplicateScope === 'deck' ? `"deck:${this._escapeQuery(note.deckName)}" ` : '');
query += this._fieldsToQuery(note.fields);
return {action: 'findNotes', params: {query}};
});
return await this._invoke('multi', {actions});
}
// Private
async _checkVersion() {
if (this._remoteVersion < this._localVersion) {
if (this._versionCheckPromise === null) {
const promise = this._invoke('version');
promise.finally(() => { this._versionCheckPromise = null; });
this._versionCheckPromise = promise;
}
this._remoteVersion = await this._versionCheckPromise;
if (this._remoteVersion < this._localVersion) {
throw new Error('Extension and plugin versions incompatible');
}
}
}
async _invoke(action, params) {
const response = await fetch(this._server, {
method: 'POST',
mode: 'cors',
cache: 'default',
credentials: 'omit',
redirect: 'follow',
referrerPolicy: 'no-referrer',
body: JSON.stringify({action, params, version: this._localVersion})
});
const result = await response.json();
if (isObject(result)) {
const error = result.error;
if (typeof error !== 'undefined') {
throw new Error(`AnkiConnect error: ${error}`);
}
}
return result;
}
_escapeQuery(text) {
return text.replace(/"/g, '');
}
_fieldsToQuery(fields) {
const fieldNames = Object.keys(fields);
if (fieldNames.length === 0) {
return '';
}
const key = fieldNames[0];
return `"${key.toLowerCase()}:${this._escapeQuery(fields[key])}"`;
}
}