asle/mobile/src/services/biometric.ts

import ReactNativeBiometrics from 'react-native-biometrics';

export class BiometricService {
  private static rnBiometrics = new ReactNativeBiometrics();

  static async isAvailable(): Promise<boolean> {
    try {
      const { available } = await this.rnBiometrics.isSensorAvailable();
      return available;
    } catch (error) {
      return false;
    }
  }

  static async authenticate(reason: string = 'Authenticate to access ASLE'): Promise<boolean> {
    try {
      const { success } = await this.rnBiometrics.simplePrompt({
        promptMessage: reason,
      });
      return success;
    } catch (error) {
      return false;
    }
  }

  static async createKeys(): Promise<{ publicKey: string; privateKey: string } | null> {
    try {
      const { publicKey } = await this.rnBiometrics.createKeys();
      return { publicKey, privateKey: '' }; // Private key is stored securely
    } catch (error) {
      return null;
    }
  }
}