initial commit

fluxer_app/src/lib/Platform.ts

@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+const userAgent = navigator.userAgent;
+const hasNavigator = typeof navigator !== 'undefined';
+
+const isIOSDevice = (() => {
+	if (/iPhone|iPad|iPod/.test(userAgent)) return true;
+	if (/Mac/.test(userAgent) && typeof navigator.maxTouchPoints === 'number' && navigator.maxTouchPoints > 1) {
+		return true;
+	}
+	return false;
+})();
+
+const isAndroidDevice = /Android/.test(userAgent);
+const isMobileBrowser = isIOSDevice || isAndroidDevice;
+const isIOSWeb = isIOSDevice;
+const isElectron = typeof (window as {electron?: unknown}).electron !== 'undefined';
+const isPWA = typeof window.matchMedia === 'function' && window.matchMedia('(display-mode: standalone)').matches;
+
+type PlatformSpecifics<T> = Partial<Record<string, T | undefined>> & {
+	default?: T | undefined;
+};
+
+const selectValue = <T>(specifics: PlatformSpecifics<T>): T | undefined => {
+	if (isElectron && specifics.electron !== undefined) {
+		return specifics.electron;
+	}
+	if (specifics.web !== undefined) {
+		return specifics.web;
+	}
+	if (specifics.default !== undefined) {
+		return specifics.default;
+	}
+	return Object.values(specifics).find((value) => value !== undefined);
+};
+
+export const Platform = {
+	OS: 'web' as const,
+	isWeb: true,
+	isIOS: isIOSDevice,
+	isAndroid: isAndroidDevice,
+	isElectron,
+	isIOSWeb,
+	isPWA,
+	isAppleDevice: isIOSDevice,
+	isMobileBrowser,
+	select: selectValue,
+};
+
+export function isWebPlatform(): boolean {
+	return Platform.isWeb;
+}
+
+export function isElectronPlatform(): boolean {
+	return Platform.isElectron;
+}
+
+export function getNativeLocaleIdentifier(): string | null {
+	if (!hasNavigator) {
+		return null;
+	}
+	const languages = navigator.languages;
+	if (Array.isArray(languages) && languages.length > 0) {
+		return languages[0];
+	}
+	return navigator.language ?? null;
+}