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Viewing File: /home/optimaldigitaltr/public_html/src/app/Http/Controllers/CardController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Str;

class CardController extends Controller
{
    /**
     * Unlock or Purchase the user's card.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\JsonResponse
     */
    public function unlock(Request $request)
    {
        $user = Auth::user();

        // If the card is not purchased yet, handle purchase
        if ($user->card_status != 1) {
            // Check if the user has sufficient balance
            if ($user->wallet->primary_balance < 1000) {
                return response()->json(['status' => 'error', 'message' => 'Insufficient balance to purchase the card. Please top up your primary wallet.'], 400);
            }

            // Deduct $1000 from primary balance
            $user->wallet->primary_balance -= 1000;
            $user->wallet->save();

            // Generate unique random 16-digit card number ensuring uniqueness
            do {
                $card_number = $this->generateCardNumber();
            } while ($this->cardNumberExists($card_number));

            // Generate random 3-digit CVV
            $card_cvv = rand(100, 999);

            // Set expiry date to 2 years from now in mm/yy format
            $expiry_date = now()->addYears(2)->format('m/y');

            // Update user card details
            $user->card_number = $card_number;
            $user->card_cvv = $card_cvv;
            $user->card_expiry = $expiry_date;
            $user->card_status = 1; // Mark as purchased
            $user->save();

            return response()->json([
                'status' => 'success',
                'message' => 'Card purchased successfully.',
                'new_balance' => $user->wallet->primary_balance,
                'card_number' => chunk_split($card_number, 4, ' '), // Format as XXXX XXXX XXXX XXXX
                'card_expiry' => $expiry_date,
                // 'card_cvv' => $card_cvv, // Remove this line for security
            ]);
        }

        // If the card is already purchased but locked, handle unlock
        else {
            // Implement unlock logic if applicable
            // For example, deducting additional fees or updating card status
            // This part depends on your specific business logic

            return response()->json(['status' => 'error', 'message' => 'Card is already unlocked.'], 400);
        }
    }

    /**
     * Generate a unique random 16-digit card number.
     *
     * @return string
     */
    private function generateCardNumber()
    {
        return str_pad(rand(0, 9999999999999999), 16, '0', STR_PAD_LEFT);
    }

    /**
     * Check if the card number already exists.
     *
     * @param  string  $cardNumber
     * @return bool
     */
    private function cardNumberExists($cardNumber)
    {
        return \App\Models\User::where('card_number', $cardNumber)->exists();
    }
}
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