Feat: Moving things, updating OTP, cleaning stuff up

src/Auth/Services/UserOtpService.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace Modules\Core\Auth\Services;
+
+use Illuminate\Support\Facades\Mail;
+use Modules\Core\Auth\Mail\UserOtpMail;
+
+class UserOtpService
+{
+    private const EXPIRY_MINUTES = 10;
+    private const CODE_LENGTH = 6;
+
+    public function generateAndSend(string $email): bool
+    {
+        $model = config('auth.providers.users.model');
+        $user = $model::firstOrCreate(['email' => $email]);
+
+        $code = str_pad((string) random_int(0, 999999), self::CODE_LENGTH, '0', STR_PAD_LEFT);
+
+        $user->otp_code = $code;
+        $user->otp_expires_at = now()->addMinutes(self::EXPIRY_MINUTES);
+        $user->save();
+
+        Mail::to($user->email)->send(new UserOtpMail($user->name ?? $user->email, $code));
+
+        return true;
+    }
+
+    public function validate(string $email, string $code)
+    {
+        $model = config('auth.providers.users.model');
+        $user = $model::where('email', $email)->first();
+
+        if (! $user) {
+            return null;
+        }
+
+        if (! $user->otp_expires_at || $user->otp_code != $code || now()->isAfter($user->otp_expires_at)) {
+            return null;
+        }
+
+        $user->otp_code = null;
+        $user->otp_expires_at = null;
+        $user->save();
+
+        return $user;
+    }
+}