Camera Service

Interface

interface ICameraService {
  scanQRCode(): Promise<string | null>;
  requestPermission(): Promise<boolean>;
}

Implementations

Web (web.ts)

• Uses navigator.mediaDevices.getUserMedia to access the camera.
• Implements a software QR code decoder (e.g., jsQR or native BarcodeDetector).

DWEB (dweb.ts)

• Invokes the native system camera UI for scanning.
• Returns the decoded string directly.

Mock (mock.ts)

• Returns a hardcoded QR string immediately (e.g., a test address).