src/infrastructure/RuntimeEnvironment/Browser/BrowserRuntimeEnvironment.ts
import { OperatingSystem } from '@/domain/OperatingSystem';
import type { IEnvironmentVariables } from '@/infrastructure/EnvironmentVariables/IEnvironmentVariables';
import { EnvironmentVariablesFactory } from '@/infrastructure/EnvironmentVariables/EnvironmentVariablesFactory';
import { ConditionBasedOsDetector } from './BrowserOs/ConditionBasedOsDetector';
import { isTouchEnabledDevice } from './TouchSupportDetection';
import type { RuntimeEnvironment } from '../RuntimeEnvironment';
import type { BrowserEnvironment, BrowserOsDetector } from './BrowserOs/BrowserOsDetector';
export class BrowserRuntimeEnvironment implements RuntimeEnvironment {
public readonly isRunningAsDesktopApplication: boolean;
public readonly os: OperatingSystem | undefined;
public readonly isNonProduction: boolean;
public constructor(
window: Partial<Window>,
environmentVariables: IEnvironmentVariables = EnvironmentVariablesFactory.Current.instance,
browserOsDetector: BrowserOsDetector = new ConditionBasedOsDetector(),
touchDetector: TouchDetector = isTouchEnabledDevice,
) {
if (!window) { throw new Error('missing window'); } // do not trust strictNullChecks for global objects
this.isNonProduction = environmentVariables.isNonProduction;
this.isRunningAsDesktopApplication = isElectronRendererProcess(window);
this.os = determineOperatingSystem(window, touchDetector, browserOsDetector);
}
}
function isElectronRendererProcess(globalWindow: Partial<Window>): boolean {
return globalWindow.isRunningAsDesktopApplication === true; // Preloader injects this
// We could also do `globalWindow?.navigator?.userAgent?.includes('Electron') === true;`
}
function determineOperatingSystem(
globalWindow: Partial<Window>,
touchDetector: TouchDetector,
browserOsDetector: BrowserOsDetector,
): OperatingSystem | undefined {
const userAgent = globalWindow?.navigator?.userAgent;
if (!userAgent) {
return undefined;
}
const browserEnvironment: BrowserEnvironment = {
userAgent,
isTouchSupported: touchDetector(),
};
return browserOsDetector.detect(browserEnvironment);
}
type TouchDetector = () => boolean;