biometricAuth
  .verifyBiometric({
    title: 'Android title', // optional title (used only on Android)
    message: 'Scan your finger', // optional (used on both platforms) - for FaceID on iOS see the notes about NSFaceIDUsageDescription
    fallbackMessage: 'Enter your PIN', // this will be the text to show for the "fallback" button on the biometric prompt
    pinFallback: true, // allow fall back to pin/password
  })
  .then((result?: BiometricResult) => {
    if (result.code === ERROR_CODES.SUCCESS) {
      console.log('Biometric ID OK')
    }
  })
  .catch((err) => console.log(`Biometric ID NOT OK: ${JSON.stringify(err)}`))

biometricAuth.available().then((avail) => {
  if (!avail) {
    return
  }
  biometricAuth.didBiometricDatabaseChange().then((changed) => {
    if (changed) {
      // re-auth the user by asking for his credentials before allowing a fingerprint scan again
    } else {
      // call the fingerprint scanner
    }
  })
})

biometricAuth
  .verifyBiometric({
    title: 'Enter your password',
    message: 'Scan your finger', // optional
    pinFallback: false, // do not allow pinFallback to enable crypto operations
    keyName: 'MySecretKeyName', // The name of the key that will be created/used
    secret: 'The Secret I want encrypted',
  })
  .then((result) => {
    const encryptedText = result.encrypted // The text encrypted with a key named "MySecretKeyName" (Android Only)
    const IV = result.iv // the  initialization vector used to encrypt (Android Only)

    // For IOS the secret is stored in the keycain
  })
  .catch((err) =>
    this.set('status', `Biometric ID NOT OK: " + ${JSON.stringify(err)}`)
  )

biometricAuth
  .verifyBiometric({
    title: 'Enter your password',
    message: 'Scan yer finger', // optional
    keyName: 'MySecretKeyName', // The name of the key that will be created/used
    pinFallback: false, // do not allow pinFallback to enable crypto operations
    android: {
      decryptText: 'The encrypted text retrieved previously',
      iv: 'The IV retrieved previously',
    },
    ios: { fetchSecret: true }, // Tell IOS to fetch the secret
  })
  .then((result) => {
    const decryptedText = result.decrypted // The unencrypted secret
    verifyMySecret(decryptedText) // verify the secret by some means, e.g. a call to a back end server.
  })
  .catch((err) =>
    this.set('status', `Biometric ID NOT OK: " + ${JSON.stringify(err)}`)
  )

biometricAuth
  .verifyBiometric({
    title: 'Enter your password',
    message: 'Scan yer finger', // optional
    fallbackMessage: 'Enter PIN', // optional
    pinFallback: true,
    ios: { customFallback: false }, // passing true here will show the fallback message and allow you to handle this in a custom manner.
  })
  .then((result) => {
    console.log('Fingerprint/ PIN was OK')
  })
  .catch((err) =>
    this.set('status', `Biometric ID NOT OK: " + ${JSON.stringify(err)}`)
  )

enum ERROR_CODES {
  PASSWORD_FALLBACK_SELECTED = -3, // historically this is what iOS uses, so using that as well
  SUCCESS = 0,
  DEVELOPER_ERROR = 10,
  NOT_AVAILABLE = 20,
  NOT_CONFIGURED = 30,
  NOT_RECOGNIZED = 40,
  RECOVERABLE_ERROR = 50,
  USER_CANCELLED = 60,
  UNEXPECTED_ERROR = 70,
}