<?php namespace App\Helpers;

use Illuminate\Support\Facades\Config;
use GuzzleHttp\Client;

class Sms {

    public function __construct()
    {

    }


    /**
     * @param null $mobile
     * @param null $message
     * @param null $encoding
     * @return array
     */
    public static function send($mobile = NULL, $message = NULL, $encoding = NULL)
    {
        $data = array();

        $sender = Config::get('sms.sender');

        //the sms format must start with 6
        $valid_mobile = $mobile;
        if($mobile[0] == '0')
        {
            $valid_mobile = '6'.$mobile;
        }

        //new method
        $username = config('sms.username');
        $password = config('sms.password');
        //$checksms_url = 'username='.$username.'&password='.$password;

        $client = New Client([
            // Base URI is used with relative requests
            'base_uri' =>  config('sms.base_url'),
            // You can set any number of default request options.
            'timeout'  => 2.0,
        ]);

        if($encoding == 'UTF16')
        {
            $type = 3;
            //API written it require to convert to hex form
            $message = bin2hex(iconv('UTF-8', 'UTF-16BE', $message));

            $sendsms_url = 'username='.$username.'&password='.$password.
                '&message='.$message.'&mobile='.$valid_mobile.'&sender='.$sender.'&type='.$type;

            //$response = $client->request('GET', config('sms.credit_url').$checksms_url);
            $response = $client->request('GET', config('sms.send_url').$sendsms_url);

            $stream = $response->getBody();
            $data['sms_returnstatus'] = $stream->getContents();
            //$data['sms_returnstatus'] = $this->curl->simple_get($sendsms_url);

        }
        else
        {
            //it must be urlencode or else it won't work
            $message = html_entity_decode($message, ENT_QUOTES, 'utf-8');
            $message = urlencode($message);
            $type = 1;
            $sendsms_url = 'username='.$username.'&password='.$password.
                '&message='.$message.'&mobile='.$valid_mobile.'&sender='.$sender.'&type='.$type;

            $response = $client->request('GET', config('sms.send_url').$sendsms_url);

            $stream = $response->getBody();
            $data['sms_returnstatus'] = $stream->getContents();
        }

        //$data['sms_returntext'] = $this->return_status($data['sms_returnstatus']);

        //remove cache due to after send the sms
        //Cache::forget('sms_credit');

        return $data;
    }


    /*
     * Return SMS Server Status
     */
    public function return_status($code)
    {
        //only take the 4 digi
        $return_code = substr($code, 0, 4);
        switch($return_code)
        {
            case '1701':
                $sms_returntext = 'Message Sent Successfully.';
                break;
            case '1702':
                $sms_returntext = 'Invalid Username/Password.';
                break;
            case '1703':
                $sms_returntext = 'Internal Server Error.';
                break;
            case '1704':
                $sms_returntext = 'Insufficient Credits.';
                //send email to treeswift/acc department

                break;
            case '1705':
                $sms_returntext = 'Invalid Mobile Number';
                break;
            case '1706':
                $sms_returntext = 'Invalid Message / Invalid SenderID';
                break;
            case '1707':
                $sms_returntext = 'Transfer Credits Successful';
                break;
            case '1708':
                $sms_returntext = 'Account not existing for Credits Transfer';
                break;
            case '1709':
                $sms_returntext = 'Invalid Credits Value for Credits Transfer';
                break;
            case '1718':
                $sms_returntext = 'Duplicate record received';
                break;
            default:
                $sms_returntext = 'Invalid Code';
                break;
        }
        return $sms_returntext;
    }
}