This documentation outlines the functionality of the useForgotPassword hook, focusing on the implementation of the password reset feature in a Firebase-authenticated application.

The useForgotPassword hook manages the password reset flow by:

1. Capturing the user's email input.
2. Sending a password reset email using Firebase's authentication service.
3. Providing navigation to the Login screen after a successful reset request or on demand.

• To store and manage the user's email input for requesting a password reset.

• Utilizes React's useState hook to capture and update the email field dynamically.

const [email, setEmail] = useState<string>('');

• The email state variable holds the email entered by the user.
• The setEmail function updates the state as the user types.

• To send a password reset email to the user via Firebase Authentication.

1. Functionality:

   • Calls Firebase's sendPasswordResetEmail method with the provided email address.
   • Logs a success message on successful email delivery.
   • Navigates to the Login screen post-success.

2. Code Snippet:

   const handleResetPassword = () => {
     if (email.trim()) {
       sendPasswordResetEmail(auth, email)
         .then(() => {
           console.log(`Password reset link sent to ${email}`);
           navigation.navigate('Login'); // Navigate to Login screen
         })
         .catch((error) => {
           console.error('Error sending password reset email:', error.message);
           alert('Error sending password reset email. Please try again.');
         });
     } else {
       alert('Please enter a valid email address.');
     }
   };

3. Process:

   • Validates that the email input is non-empty and trimmed of whitespace.
   • On success, navigates to the Login screen.
   • Provides error feedback for invalid inputs or failed attempts.

• To redirect the user to the Login screen when required.

1. Functionality:

   • Utilizes the useNavigation hook to navigate programmatically.

2. Code Snippet:

   const navigateLogin = () => {
     navigation.navigate('Login'); // Navigate to Login screen
   };

3. Process:

   • Calls the navigate method to switch to the Login screen.

• Alerts provide feedback for:
  • Missing or invalid email inputs.
  • Errors during the password reset request (e.g., invalid email format, network issues).

• Firebase Authentication caches the user's session state but does not cache email addresses for password reset requests. The email state is managed locally within the hook.

• Use this hook in screens that provide a "Forgot Password" feature, linking it to a form input for the user's email.

For additional reference, consult the Firebase Authentication Documentation.