Separated laravel app to its own folder (#540)

api/app/Rules/ValidHCaptcha.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace App\Rules;
+
+use Closure;
+use Illuminate\Contracts\Validation\ImplicitRule;
+use Illuminate\Support\Facades\Http;
+
+class ValidHCaptcha implements ImplicitRule
+{
+    public const H_CAPTCHA_VERIFY_URL = 'https://hcaptcha.com/siteverify';
+
+    private $error = 'Invalid CAPTCHA. Please prove you\'re not a bot.';
+
+    /**
+     * Determine if the validation rule passes.
+     *
+     * @param  string  $attribute
+     * @param  mixed  $value
+     * @return bool
+     */
+    public function passes($attribute, $value)
+    {
+        if (empty($value)) {
+            $this->error = 'Please complete the captcha.';
+
+            return false;
+        }
+
+        return Http::asForm()->post(self::H_CAPTCHA_VERIFY_URL, [
+            'secret' => config('services.h_captcha.secret_key'),
+            'response' => $value,
+        ])->json('success');
+    }
+    public function validate(string $attribute, mixed $value, Closure $fail): void
+    {
+        if(!$this->passes($attribute, $value)) {
+            $fail($this->message());
+        }
+    }
+
+    /**
+     * Get the validation error message.
+     *
+     * @return string
+     */
+    public function message()
+    {
+        return $this->error;
+    }
+}