<?php

namespace App\Clients\Services;

use Exception;
use Twilio\Rest\Client;

class TwilioPhoneService
{
    protected $twilio;

    public function __construct()
    {
        // Instantiate Twilio client with credentials from .env
        $this->twilio = new Client(config('services.twilio.sid'), config('services.twilio.auth_token'));
    }

    /**
     * Purchase a Twilio phone number and set up a webhook for incoming calls.
     *
     * @param string $phoneNumber - The phone number to purchase
     * @param string $companyName - The name of the company for setting the friendly name
     * @param string $type - The type ('revenue_code' or 'operational_user')
     * @param string $value - The user full name or revenue code based on type
     * @return array - Information about the purchased number
     * @throws Exception
     */
    public function purchasePhoneNumberAndSetWebhook(string $phoneNumber, string $companyName, string $type, string $value)
    {
        try {
            $purchasedNumber = $this->twilio->incomingPhoneNumbers->create([
                'phoneNumber' => $phoneNumber,
            ]);

            $webhookUrl = url('/twilio/incoming-call');
            $statusCallbackUrl = url('/twilio/call-status'); // URL for status callback

            $friendlyName = "{$companyName} - {$type} - {$value}";

            $this->twilio->incomingPhoneNumbers($purchasedNumber->sid)->update([
                'voiceUrl' => $webhookUrl,
                'voiceMethod' => 'POST',
                'friendlyName' => $friendlyName,
                'statusCallback' => $statusCallbackUrl,  // Status callback webhook
                'statusCallbackMethod' => 'POST',
            ]);

            return [
                'phone_number' => $purchasedNumber->phoneNumber,
                'sid' => $purchasedNumber->sid,
                'webhook_url' => $webhookUrl,
                'status_callback_url' => $statusCallbackUrl,
            ];
        } catch (Exception $e) {
            throw new Exception("Failed to purchase the phone number or set up the webhook: " . $e->getMessage());
        }
    }

    /**
     * Get available phone numbers based on area code.
     *
     * @param string $areaCode - The area code to search for available numbers
     * @return array - List of available phone numbers
     */
    public function getAvailablePhoneNumbers(string $areaCode): array
    {
        $availableNumbers = $this->twilio->availablePhoneNumbers('US')->local->read([
            'areaCode' => $areaCode,
        ]);

        return collect($availableNumbers)->mapWithKeys(function ($number) {
            return [$number->phoneNumber => $number->friendlyName];
        })->toArray();
    }
}