<?php

namespace App\Services\Auth;

use App\Models\OtpCode;
use Illuminate\Support\Facades\Http;

class OtpService
{
    public function generateCode(): string
    {
        return (string) random_int(1000, 9999);
    }

    public function sendForPhone(string $phone, int $minutes = 3): OtpCode
    {
        $code = $this->generateCode();
        $expiresAt = now()->addMinutes($minutes);

        $otpCode = OtpCode::updateOrCreate(
            ['phone' => $phone],
            ['code' => $code, 'expires_at' => $expiresAt]
        );

        $this->sendSms($phone, $code);

        return $otpCode;
    }

    public function verifyCode(string $phone, string $code): bool
    {
        $deleted = OtpCode::where('phone', $phone)
            ->where('code', $code)
            ->where('expires_at', '>', now())
            ->delete();

        return (bool) $deleted;
    }

    public function existsValid(string $phone, string $code): bool
    {
        return OtpCode::where('phone', $phone)
            ->where('code', $code)
            ->where('expires_at', '>', now())
            ->exists();
    }

    private function sendSms(string $phone, string $code): array
    {
        try {
            $formattedRecipient = $this->formatPhoneForSms($phone);

            $response = Http::withHeaders([
                'Accept' => 'application/json',
                'Content-Type' => 'application/json',
                'Api-Key' => config('services.iranpayamak.api_key'),
            ])
            ->post(config('services.iranpayamak.api_url'), [
                'code' => config('services.iranpayamak.patterns.verify_code'),
                'attributes' => [
                    'otp' => $code,
                    'status' => 'بازنشانی رمز عبور'
                ],
                'recipient' => $formattedRecipient,
                'line_number' => config('services.iranpayamak.line_number'),
                'number_format' => 'english',
            ]);

        if ($response->successful()) {
            return $response->json();
        } else {
            return [
                'status' => 'error',
                'message' => 'SMS sending failed: ' . $response->status(),
                'data' => $response->body()
            ];
        }
        } catch (\Exception $e) {
            return [
                'status' => 'error',
                'message' => 'SMS sending exception: ' . $e->getMessage(),
                'data' => null
            ];
        }
    }


    private function formatPhoneForSms(string $phone): string
    {
        if (str_starts_with($phone, '+98')) {
            return '0' . substr($phone, 3);
        }
        return $phone;
    }
}