Clase que implementa la interfaz que data utiliza para hacer login con biometrics

AuthImpl.kt

package com.example.cleanarchme.data

import android.app.Application
import android.widget.Toast
import androidx.biometric.BiometricPrompt
import androidx.fragment.app.FragmentActivity
import com.example.data.auth.Auth
import java.util.concurrent.Executor

class AuthImpl(private val context: Application, private var activity: FragmentActivity) : Auth {

    private val executor = Executor { r -> r.run() }

    override fun authWithFingerPrint(callback: (Boolean) -> Unit) {
        val promptInfo = BiometricPrompt.PromptInfo.Builder()
            .setTitle("Biometric login for my app")
            .setSubtitle("Log in using your biometric credential")
            .setDeviceCredentialAllowed(true)
            .build()

        val biometricPrompt = BiometricPrompt(
            activity, executor, object : BiometricPrompt.AuthenticationCallback() {
                override fun onAuthenticationError(errorCode: Int, errString: CharSequence) {
                    super.onAuthenticationError(errorCode, errString)
                    Toast.makeText(context, "Authentication error: $errString", Toast.LENGTH_SHORT)
                        .show()
                    callback.invoke(false)
                }

                override fun onAuthenticationSucceeded(result: BiometricPrompt.AuthenticationResult) {
                    super.onAuthenticationSucceeded(result)

                    // User has verified the signature, cipher, or message
                    // authentication code (MAC) associated with the crypto object,
                    // so you can use it in your app's crypto-driven workflows.
                    Toast.makeText(context, "Authentication success: ", Toast.LENGTH_SHORT).show()
                    callback.invoke(true)

                }

                override fun onAuthenticationFailed() {
                    super.onAuthenticationFailed()
                    Toast.makeText(context, "Authentication failed", Toast.LENGTH_SHORT).show()
                    callback.invoke(false)
                }
            })

        // Displays the "log in" prompt.
        biometricPrompt.authenticate(promptInfo)
    }

    override suspend fun authWithFaceID(): Boolean {
        return false
    }
}