Handling Typeform Webhooks in Laravel

WebhookController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class WebhookController
{
    public function create(Request $request)
    {
        abort_unless($this->typeformSignatureMatches($request), 403);
        
        $answers = collect($request->input('form_response.answers'))
            ->keyBy('field.ref')
            ->transform(function ($answer) {
                return $answer[$answer['type']];
            });

        // Then you can use form values directly from the collection, e.g.:
        $answers->get('email');
    }
    
    protected function typeformSignatureMatches(Request $request)
    {
        $body = $request->getContent();
        
        $provided_signature = $request->header('Typeform-Signature');

        $actual_signature = 'sha256=' . base64_encode(hash_hmac('sha256', $body, env('TYPEFORM_SECRET'), true));

        return hash_equals($actual_signature, $provided_signature);
    }
}