93 lines
2.6 KiB
JavaScript
93 lines
2.6 KiB
JavaScript
/*
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* Copyright (C) 2020-2021 Yomichan Authors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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class Environment {
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constructor() {
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this._cachedEnvironmentInfo = null;
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}
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async prepare() {
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this._cachedEnvironmentInfo = await this._loadEnvironmentInfo();
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}
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getInfo() {
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if (this._cachedEnvironmentInfo === null) { throw new Error('Not prepared'); }
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return this._cachedEnvironmentInfo;
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}
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async _loadEnvironmentInfo() {
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const browser = await this._getBrowser();
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const os = await this._getOperatingSystem();
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return {
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browser,
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platform: {os}
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};
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}
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async _getOperatingSystem() {
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try {
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const {os} = await this._getPlatformInfo();
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if (typeof os === 'string') {
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return os;
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}
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} catch (e) {
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// NOP
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}
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return 'unknown';
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}
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_getPlatformInfo() {
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return new Promise((resolve, reject) => {
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chrome.runtime.getPlatformInfo((result) => {
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const error = chrome.runtime.lastError;
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if (error) {
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reject(error);
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} else {
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resolve(result);
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}
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});
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});
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}
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async _getBrowser() {
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try {
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if (chrome.runtime.getURL('/').startsWith('ms-browser-extension://')) {
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return 'edge-legacy';
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}
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if (/\bEdge?\//.test(navigator.userAgent)) {
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return 'edge';
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}
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} catch (e) {
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// NOP
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}
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if (typeof browser !== 'undefined') {
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try {
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const info = await browser.runtime.getBrowserInfo();
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if (info.name === 'Fennec') {
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return 'firefox-mobile';
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}
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} catch (e) {
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// NOP
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}
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return 'firefox';
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} else {
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return 'chrome';
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}
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}
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}
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