fix: Implemented Account verification , Email validation. issue:#152

[kaali001]

Description

This PR implements email validation functionality in our application. The feature includes temporary user storage, token-based email verification, and user redirection upon successful verification. Below are the key details of the implementation:

Changes

1. Temporary User Storage:

• When a new user signs up, their details are stored in a temporary database table (tempUser).
• This ensures that only verified users are moved to the main user database (mainuser).

2. Token Generation and Email Sending:

• A unique token is generated for each user upon signup.
• An email with a verification link containing the token and user's email is sent to the user.

3. Email Verification Endpoint:

• An API endpoint (/api/users/verify-email) is created to handle the verification process.
• The endpoint validates the token and email, transfers the user details to the main user database if successful, and deletes the temporary entry.

4. Frontend Integration:

• The VerifyEmail component fetches the token and email from the URL and calls the verification API.
• On successful verification, the user is redirected to a success page with a "Login" button that redirects to the login page.

How to test

• Ensure you have the backend server running on port 3000 and the frontend application running on port 5173.
• Set up your email service correctly to send verification emails.
• Make sure your Prisma Client is properly configured and the database is up and running.
• Go to the signup page.
• Fill in details (name, email, password, etc.).
• Submit the form.
• Check your email for a verification link.
• Click the verification link in the email.
• Verify you see "Your account has been verified successfully!" on the /verify-email page.
• Ensure user details are in tempUser table initially.
• After verification, check details are moved to mainuser table and removed from tempUser.

fix an issue already created in the repository-
#152

[dvjsharma]

A small suggestion- instead creating a new tempUser table and migrating data upon successful verification, you can add a new field isVerified in current main user table to handle the scenario. It will reduce database calls and will be more modular.

[dvjsharma]

LGTM