Deepseek Auth Dump

1. Set Up Authentication

You can use a library like Supabase or Firebase for authentication. Both support Google OAuth and email/password authentication.

Example with Supabase:

Install Supabase:

npm install @supabase/supabase-js

Initialize Supabase in your project:

import { createClient } from '@supabase/supabase-js';

const supabaseUrl = 'https://your-supabase-url.supabase.co';
const supabaseKey = 'your-anon-key';
export const supabase = createClient(supabaseUrl, supabaseKey);

Add Google OAuth and email/password sign-up:

// Google OAuth
async function signInWithGoogle() {
  const { user, error } = await supabase.auth.signInWithOAuth({
    provider: 'google',
  });
  if (error) console.error(error);
  return user;
}

// Email/password sign-up
async function signUpWithEmail(email, password) {
  const { user, error } = await supabase.auth.signUp({ email, password });
  if (error) console.error(error);
  return user;
}

2. Integrate Razorpay for Payments

Include Razorpay’s script in your project:

<script src="https://checkout.razorpay.com/v1/checkout.js"></script>

Create a payment button and handle the payment flow:

async function handlePayment() {
  const options = {
    key: 'your-razorpay-key-id', // Replace with your Razorpay key
    amount: 50000, // Amount in paise (e.g., 50000 = ₹500)
    currency: 'INR',
    name: 'Your Company Name',
    description: 'Subscription Payment',
    image: 'https://your-logo-url.com/logo.png',
    handler: async function (response) {
      // Payment successful
      console.log('Payment ID:', response.razorpay_payment_id);
      await completeSignUp(); // Proceed with user sign-up
    },
    prefill: {
      email: 'user-email@example.com', // Prefill user email
    },
    theme: {
      color: '#F37254',
    },
  };

  const razorpay = new Razorpay(options);
  razorpay.open();
}

3. Link Payment Success to User Sign-Up

Store the user’s authentication details temporarily (e.g., in a session or local storage) before payment.

After payment, create the user account:

async function completeSignUp() {
  const user = await signUpWithEmail('user-email@example.com', 'password');
  if (user) {
    console.log('User signed up successfully:', user);
    // Redirect to dashboard or success page
  }
}

4. Handle Payment Failure

Add a modal_close callback to Razorpay to handle payment abandonment:

const options = {
  ...
  modal: {
    ondismiss: function () {
      console.log('Payment dismissed');
      // Optionally, show a message to the user
    },
  },
};

5. Backend Validation (Optional but Recommended)

Use Razorpay’s webhooks to verify the payment:

// In your SvelteKit API route
export async function post(request) {
  const { payment_id } = request.body;
  // Verify payment with Razorpay API
  const isValid = await verifyPayment(payment_id);
  if (isValid) {
    // Complete sign-up
  } else {
    // Reject sign-up
  }
}

6. Putting It All Together

• Create a sign-up form for email/password or Google OAuth.
• On form submission, store the user’s details temporarily and initiate the Razorpay payment.
• On payment success, complete the sign-up process.
• On payment failure, discard the temporary user data.

Example Workflow:

1. User fills out the sign-up form or clicks “Sign up with Google.”
2. User clicks the payment button, and Razorpay opens.
3. If payment is successful:

• Create the user account.
• Redirect to the dashboard.

4. If payment fails:

• Show an error message.
• Do not create the user account.

Option 1: Load the Script in a Svelte Component

<script>
  import { onMount } from 'svelte';

  let Razorpay;

  onMount(async () => {
    // Dynamically load the Razorpay script
    const script = document.createElement('script');
    script.src = 'https://checkout.razorpay.com/v1/checkout.js';
    script.async = true;
    document.body.appendChild(script);

    script.onload = () => {
      // Razorpay is now available globally
      Razorpay = window.Razorpay;
      console.log('Razorpay script loaded');
    };
  });

  function handlePayment() {
    if (!Razorpay) {
      console.error('Razorpay script not loaded yet');
      return;
    }

    const options = {
      key: 'your-razorpay-key-id', // Replace with your Razorpay key
      amount: 50000, // Amount in paise (e.g., 50000 = ₹500)
      currency: 'INR',
      name: 'Your Company Name',
      description: 'Subscription Payment',
      image: 'https://your-logo-url.com/logo.png',
      handler: function (response) {
        console.log('Payment ID:', response.razorpay_payment_id);
        // Handle successful payment
      },
      prefill: {
        email: 'user-email@example.com', // Prefill user email
      },
      theme: {
        color: '#F37254',
      },
    };

    const rzp = new Razorpay(options);
    rzp.open();
  }
</script>

<button on:click={handlePayment}>Pay with Razorpay</button>

Option 2: Load the Script in src/app.html

Open the src/app.html file in your SvelteKit project.

Add the Razorpay script tag inside the head or at the end of the body:

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <link rel="icon" href="%sveltekit.assets%/favicon.png" />
    <meta name="viewport" content="width=device-width" />
    <title>Your App</title>
    <script src="https://checkout.razorpay.com/v1/checkout.js"></script>
  </head>
  <body>
    <div style="display: contents">%sveltekit.body%</div>
  </body>
</html>

Now, the Razorpay object will be available globally in your app, and you can use it directly in any component or page:

<script>
  function handlePayment() {
    const options = {
      key: 'your-razorpay-key-id',
      amount: 50000,
      currency: 'INR',
      name: 'Your Company Name',
      description: 'Subscription Payment',
      handler: function (response) {
        console.log('Payment ID:', response.razorpay_payment_id);
      },
    };

    const rzp = new Razorpay(options);
    rzp.open();
  }
</script>

<button on:click={handlePayment}>Pay with Razorpay</button>