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app/Services/OtpService.php

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+<?php
+
+namespace App\Services;
+
+use App\Enums\OtpVerificationResult;
+use App\Models\PhoneVerification;
+use Illuminate\Support\Facades\Hash;
+
+class OtpService
+{
+    public const OTP_EXPIRY_MINUTES = 10;
+
+    public function issue(string $phone): bool
+    {
+        $otp = $this->generateOtp();
+
+        PhoneVerification::query()->updateOrCreate(
+            ['phone' => $phone],
+            [
+                'otp' => Hash::make($otp),
+                'expires_at' => now()->addMinutes(self::OTP_EXPIRY_MINUTES),
+                'verified' => false,
+            ],
+        );
+
+        return sendSMS($phone, 'Tassyklaýyş belgi: '.$otp);
+    }
+
+    public function verify(string $phone, string $otp): OtpVerificationResult
+    {
+        $verification = PhoneVerification::query()->where('phone', $phone)->first();
+
+        if (! $verification) {
+            return OtpVerificationResult::Invalid;
+        }
+
+        if ($verification->expires_at->isPast()) {
+            return OtpVerificationResult::Expired;
+        }
+
+        if (! Hash::check($otp, $verification->otp)) {
+            return OtpVerificationResult::Invalid;
+        }
+
+        $verification->update(['verified' => true]);
+
+        return OtpVerificationResult::Verified;
+    }
+
+    private function generateOtp(): string
+    {
+        return (string) random_int(1000, 9999);
+    }
+}