<?php

namespace App\Http\Controllers;

use App\Console\Commands\SpeedyPersoBulkSms;
use App\DataTables\TmpGroupSmsDataTable;
use App\Filters;
use App\Imports\BulkSmsImport;
use App\LogReceived;
use App\SavedMessage;
use App\SmsImage;
use App\UserJob;
use App\Log;
use App\UserSenderId;
use Carbon\Carbon;
use GuzzleHttp\Client;
use Illuminate\Http\Request;

use Illuminate\Support\Facades\Auth;
use App\Tools\SmsTools;
use DateTime;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Redirect;
use Illuminate\Support\Facades\Response;
use Illuminate\Support\Facades\Validator;
use Maatwebsite\Excel\Facades\Excel;
use PhpOffice\PhpSpreadsheet\IOFactory;
use PhpOffice\PhpSpreadsheet\Spreadsheet;
use PhpOffice\PhpSpreadsheet\Writer\Xlsx;

class SmsController extends Controller
{

    public function generateChatGPT(Request $request): \Illuminate\Http\JsonResponse
    {
        try {
            $username = 'daniel';
            $password = 'R0n0r0@z0r0';

            $client = new Client([
                'base_uri' => 'https://openai.npontu.com',
            ]);

            $response = $client->post('/chat', [
                'auth' => [$username, $password],
                'json' => [
                    'prompt' => $request->prompt,
                ],

            ]);

            $code = 200;
            $body = $response->getBody()->getContents();
        } catch (\Exception $e) {
            $code = 400;
            $body = $e->getMessage();
        }
        $results = json_decode($body, true);

        return response()->json([
            'code' => $code,
            'status' => 'success',
            'results' => $results
        ]);
    }

    public function resetSingleSmsData(Request $request)
    {
        $request->session()->put('single_sms_data', [
            'phone_numbers' => '',
            'message_content' => '',
            'sender_id' => '',
            'schedule_date' => '',
            'recipients' => '',
            'total_price' => '',
            'credit_available' => '',
            'flash' => '',
        ]);
    }

    public function resetBulkSmsData(Request $request)
    {
        $request->session()->put('bulk_sms_data', [
            'name' => '',
            'message_content' => '',
            'sender_id' => '',
            'schedule_date' => '',
            'recipients' => '',
            'credit_available' => '',
            'flash' => '',
        ]);
    }

    public function resetGroupSmsData(Request $request)
    {
        $request->session()->put('group_sms_data', [
            'name' => '',
            'selected_group' => null,
            'message_content' => '',
            'sender_id' => '',
            'schedule_date' => '',
            'recipients' => '',
            'total_price' => '',
            'credit_available' => '',
            'flash' => '',
        ]);
    }

    public function resetPersonalisedGroupSmsData(Request $request)
    {
        $request->session()->put('group_sms_personalised_data', [
            'name' => '',
            'selected_group' => null,
            'message_content' => '',
            'sender_id' => '',
            'schedule_date' => '',
            'recipients' => '',
            'total_price' => '',
            'credit_available' => '',
            'msg' => '',
            //            'flash' => '',
        ]);
    }

    public function resetBulkSmsPersonalisedData()
    {
        session()->put('bulk_sms_personalised_data', [
            'name' => '',
            'message_content' => '',
            'sender_id' => '',
            'schedule_date' => '',
            'recipients' => '',
            'credit_available' => '',
            'flash' => '',
        ]);

        return redirect()->back();
    }


    public function send_single_sms(Request $request)
    {
        $step = 1;
        //reset current session data for sending single sms
        //  if($request->session()->has('single_sms_data')) {
        //  $request->session()->forget('single_sms_data');
        //   }

        //        $this->resetSingleSmsData($request);

        // If session does not exist, reset it
        if (!session('single_sms_data')) {
            $this->resetSingleSmsData($request);
        }
        if ($request->session()->has('alert')) {
            $request->session()->forget('alert');
        }
        //show view :11xx
        return view('sms.send_single_sms', [
            'step' => $step,
            'sender_ids' => UserSenderId::query()->where([['user_id', Auth::user()->id], ['status', 1]])->get()
        ]);
    }

    public function send_single_voice(Request $request)
    {
        $step = 1;
        //reset current session data for sending single sms
        if ($request->session()->has('single_sms_data')) {
            $request->session()->forget('single_sms_data');
        }
        if ($request->session()->has('alert')) {
            $request->session()->forget('alert');
        }
        //show view :11xx
        return view('sms.send_single_sms', [
            'step' => $step,
            'sender_ids' => UserSenderId::query()->where([['user_id', Auth::user()->id], ['status', 1]])->get()
        ]);
    }

    public function get_saved_sms()
    {
        $inputs = request()->all();
        $saved = SavedMessage::findOrFail($inputs['id']);
        return $saved;
    }

    public function post_save_sms(Request $request)
    {

        $this->validate($request, [
            'message' => 'required',
            'type' => 'required',
            'name' => 'required'
        ]);
        $inputs = $request->all();
        SavedMessage::firstOrCreate([
            'message' => $inputs['message'],
            'type' => $inputs['type'],
            'name' => $inputs['name'],
            'user_id' => auth()->id()
        ]);
        return 'success';
    }


    public function send_bulk_sms(Request $request)
    {
        $step = 1;
        //reset current session data for sending single sms
        // if($request->session()->has('bulk_sms_data')) {
        //     $request->session()->forget('bulk_sms_data');
        // }
        //        $this->resetBulkSmsData($request);

        if (!session('bulk_sms_data')) {
            $this->resetBulkSmsData($request);
        }

        if ($request->session()->has('alert')) {
            $request->session()->forget('alert');
        }

        //get templates
        $templates = SavedMessage::where('user_id', auth()->user()->id)->get();

        //show view:1xx
        return view('sms.send_bulk_sms', [
            'step' => $step,
            'templates' => $templates,
            'sender_ids' => UserSenderId::query()->where([['user_id', Auth::user()->id], ['status', 1]])->get()
        ]);
    }

    public function send_group_sms(Request $request, TmpGroupSmsDataTable $dataTable)
    {
        if ($request->has('draw')) {
            return $dataTable->render('sms.send_group_sms', ['step' => 2]);
        }

        $step = 1;
        //reset current session data for sending group sms
        //        if($request->session()->has('group_sms_data')) {
        //            $request->session()->forget('group_sms_data');
        //        }

        if (!session('group_sms_data')) {
            $this->resetGroupSmsData($request);
        }

        if ($request->session()->has('alert')) {
            $request->session()->forget('alert');
        }

        //fetch user groups
        $groups = $request->user()->groups()->orderBy('name', 'asc')->get(['name', 'id']);

        //get templates
        $templates = SavedMessage::where('user_id', auth()->id())->get();

        //show view
        return view('sms.send_group_sms', [
            'step' => $step,
            'groups' => $groups,
            'templates' => $templates,
            'sender_ids' => UserSenderId::query()->where([['user_id', Auth::user()->id], ['status', 1]])->get()
        ]);
    }


    public function send_sms_dlr(Request $request)
    {

        DB::beginTransaction();

        $error_msg = null;
        $msgid = $request->input('msgID');
        $msg = $request->input('msg');
        $myid = $request->input('mid');
        $now = date('Y-m-d h:i:s');

        $logss = Log::query()->find($myid);

        $write = "[$now][$msgid][$msg][$myid][$logss]" . PHP_EOL;
        $this->logging($now, 'MY LOG', $write);

        $log_received = LogReceived::query()->find($myid);

        sleep(0.5);
        $this->logging($now, 'checking on..', $myid);

        $error_msg = $request->input('errorDescr');


        $error_code = SmsTools::get_string($msg, 'err:', 'text:');
        $status_desc = SmsTools::get_string($msg, 'stat:', 'err:');
        $submit_date = SmsTools::get_string($msg, 'submit date:', 'done date:');
        $sent = SmsTools::string_date($submit_date);


        $log_received = LogReceived::query()->find($myid);

        $this->logging($now, json_encode($log_received), $myid);

        $l_delivery_date = Carbon::now()->toDateTimeString();
        $l_sent_date = $sent;

        $l_msgid =  !empty($log_received) ? $log_received->msgid : '';
        if ($l_msgid == '') {
            if (substr($msg, 0, 3) == 'id:' || substr($msg, 1, 4) == 'id:') {
                $msg = 'ACK/';
            }
            $l_status = $msg;
            $l_msgid = $msgid;
            $this->logging($now, "status first if ..$l_status...", $myid);
        } else {
            if ($status_desc == 'ACCEPTD' || $status_desc == 'ENROUTE') {
                $status_desc = 'ACK/';
            }
            if ($status_desc == 'Delivered') {
                $status_desc = 'DELIVRD';
            }
            if ($status_desc == 'Undeliverable') {
                $status_desc = 'UNDELIV';
            }
            $error_code = trim($error_code);
            $status_desc = trim($status_desc);
            $l_status = $status_desc;
            $l_delivery_date = Carbon::now()->toDateTimeString();

            $this->logging($now, "status at else ..$l_status...", $myid);
        }

        //compute delivery time
        $diff = null;
        if (1) {
            $log = Log::find($myid);
            if (!empty($log)) {
                $submitDate = Carbon::parse($log->submit_date);
                $delivDate = Carbon::parse($l_delivery_date);
                $diff = $delivDate->diffInSeconds($submitDate);
            }
        }

        sleep(1);

        $data =    [
            'msgid' => $l_msgid,
            'status' => $l_status,
            'delivery_date' => $l_delivery_date,
            'sent_date' => $l_sent_date,
            'delivery_time' => $diff,
            'error_code' => !empty($error_code) ? $error_code : null,
            'error_msg' => !empty($error_msg) ? $error_msg : null,
            'updated_at' => Carbon::now()->toDateTimeString()
        ];
        $logss->status = $l_status;
        $logss->delivery_date = $l_delivery_date;

        $write = "[$now][$msgid][$myid][$l_status][$diff]" . PHP_EOL;
        $this->logging($now, 'MY LOG', $write);

        $logss->save();

        //update db

        try {

            if (empty($log_received)) :

                $this->logging($now, 'inserting into db id..', $myid);
                $data['id'] = $myid;
                LogReceived::query()->create($data);

            else :

                $this->logging($now, 'updating', $myid);
                $log_received->update($data);

            endif;
        } catch (\Exception $ex) {
            $this->logging($now, "error  {$ex->getMessage()} on..", $myid);
        }


        DB::commit();

        return "Updated!";
    }

    //    public function send_sms_dlr(Request $request) {
    //        $msgid = $request->input('msgID');
    //        $msg = $request->input('msg');
    //        $myid = $request->input('mid');
    //
    //        $now = date('Y-m-d h:i:s');
    //
    //        $destination = $request->input('destination');
    //        $smsid = $request->input('smsid');
    //        $error_code = $request->input('errorCode');
    //        $error_msg = $request->input('errorDescr');
    //
    //        $this->logging($now,'checking on..',$myid);
    //
    //
    //        $stri = $msg . ":end";
    ////        $message = SmsTools::get_string($stri, 'Text:', ':end');
    //        $status_desc = SmsTools::get_string($msg, 'stat:', 'err:');
    //        $submit_date = SmsTools::get_string($msg, 'submit date:', 'done date:');
    //        $deliv_date = SmsTools::get_string($msg, 'done date:', 'stat:');
    //        $sent = SmsTools::string_date($submit_date);
    ////        $deli = SmsTools::string_date($deliv_date);
    //
    //        $log_received = DB::table('log_received')->where('id', $myid)->orderBy('created_at', 'desc')->first();
    //
    //        $l_status = '';
    //        $l_msgid = '';
    //        $l_delivery_date = Carbon::now()->toDateTimeString();
    //        $l_sent_date = $sent;
    //
    //        $l_msgid = $kID = !empty($log_received) ? $log_received->msgid : '';
    //        if ($kID == '') {
    //            if (substr($msg, 0, 3) == 'id:'||substr($msg, 1, 4) == 'id:') {
    //                $msg = 'ACK/';
    //            }
    //            $l_status = $msg;
    //            $l_msgid = $msgid;
    //        } else {
    //            if ($status_desc == 'ACCEPTD'||$status_desc == 'ENROUTE') {
    //                $status_desc = 'ACK/';
    //            }
    //            if($status_desc == 'Delivered'){
    //                $status_desc = 'DELIVRD';
    //            }
    //            if($status_desc == 'Undeliverable'){
    //                $status_desc = 'UNDELIV';
    //            }
    //            $status_desc = trim($status_desc);
    //            $l_status = $status_desc;
    //            $l_delivery_date = Carbon::now()->toDateTimeString();
    //        }
    //
    //        //compute delivery time
    //        $diff = null;
    ////        if($status_desc=='DELIVRD') {
    //        if(1) {
    //            $log = Log::find($myid);
    //            if(!empty($log)) {
    //                $submitDate = Carbon::parse($log->submit_date);
    //                $delivDate = Carbon::parse($l_delivery_date);
    //                $diff = $delivDate->diffInSeconds($submitDate);
    //            }
    //        }
    //
    //        //update db
    //        if(empty($log_received)) {
    //            //insert
    //            $this->logging($now,'inserting ',$myid);
    //            DB::table('log_received')->insert(
    //                [
    //                    'id' => $myid,
    //                    'msgid' => $l_msgid,
    //                    'status' => $l_status,
    //                    'delivery_date' => $l_delivery_date,
    //                    'sent_date' => $l_sent_date,
    //                    'delivery_time' => $diff,
    //                    'error_code' => !empty($error_code) ? $error_code : null,
    //                    'error_msg' => !empty($error_msg) ? $error_msg : null,
    //                    'created_at' => Carbon::now()->toDateTimeString()
    //                ]
    //            );
    //        } else {
    //            //update
    //            $this->logging($now,'updating ',$myid);
    //            DB::table('log_received')
    //                ->where('id', $myid)
    //                ->update(
    //                    [
    //                        'msgid' => $l_msgid,
    //                        'status' => $l_status,
    //                        'delivery_date' => $l_delivery_date,
    //                        'sent_date' => $l_sent_date,
    //                        'delivery_time' => $diff,
    //                        'error_code' => !empty($error_code) ? $error_code : null,
    //                        'error_msg' => !empty($error_msg) ? $error_msg : null,
    //                        'updated_at' => Carbon::now()->toDateTimeString()
    //                    ]
    //                );
    //        }
    //
    //        return "Updated!";
    //    }

    private function logging($now, $log_msg, $myid)
    {
        try {
            file_put_contents(storage_path('sms_log/incoming.log'), "$now ||  $log_msg $myid ........... \n", FILE_APPEND);
        } catch (\Exception $ex) {
        }
    }

    public function send_sms_api(Request $request)
    {
        $username = $request['username'];
        $password = $request['password'];
        $sender = $request['source'];
        $msisdn = trim($request['destination']);
        $message = $request['message'];
        $message = preg_replace(array('/\r\n/'), array("\n"), trim($message));

        \Illuminate\Support\Facades\Log::useFiles(storage_path() . '/sms_log/access_api.log');
        \Illuminate\Support\Facades\Log::info("$username | $sender | $msisdn | $message");

        if (empty($username)) {
            return [
                'code' => 402,
                'message' => 'The username is required'
            ];
        }
        if (empty($password)) {
            return [
                'code' => 402,
                'message' => 'The password is required'
            ];
        }
        if (empty($sender)) {
            return [
                'code' => 402,
                'message' => 'The source is required'
            ];
        }
        if (empty($msisdn)) {
            return [
                'code' => 402,
                'message' => 'The destination is required'
            ];
        }
        if (empty($message)) {
            return [
                'code' => 402,
                'message' => 'The message is required'
            ];
        }

        if (!Auth::once([
            'username' => $username,
            'password' => $password
        ])) {
            return [
                'code' => 401,
                'message' => 'Invalid Credential'
            ];
        }

        //get current user
        $user = Auth::user();
        $credit = $user->credit;

        if (strstr($msisdn, '/') !== false) {
            $destination = explode('/', $msisdn);
        } else {
            $destination = explode(',', $msisdn);
        }
        $no_chars = strlen($message);
        $no_pages = SmsTools::no_pages($no_chars);

        $price = 0.0;
        foreach ($destination as $single_msisdn) {
            $single_msisdn = trim($single_msisdn);
            $network = SmsTools::get_msisdn_network($user, $single_msisdn);
            $price += (float)$network['sms_price'];
        }
        $cost = $no_pages * $price;


        $curr_bal = $credit->new_bal;

        $rem_sms = floor($curr_bal / $cost);
        //remaining sms user can send

        $counter = floor($rem_sms / $no_pages);

        $msgs = $message;

        $sms_count = $no_pages;
        $submitdt = Carbon::now()->toDateTimeString();
        $created_by = $user->username;

        // cost of sending one msg with this no_pages to one person
        $nummsisdn = count($destination);
        // no of recepients
        $tot_cost = $cost;

        $curr_bal = $credit->new_bal;

        $rem_sms = floor($curr_bal / $cost);
        //remaining sms user can send

        $rejected_arr = [];
        $user_sess = $user->username;

        $date = Carbon::now();

        if ($curr_bal >= $tot_cost) {
            $count = 0;
            $job_id = $user->username . '_' . date('YmdHis');
            $no_rej_msisdn = 0;
            $errorMsg = '';
            while ($count !== $nummsisdn) {
                $number = self::format_phone_number(trim($destination[$count]));
                $msisdn = preg_replace('/\D/', '', $number);
                $msisdn = SmsTools::msisdn_prep($msisdn);
                //put msisdn in proper format
                $network = 'Unknown';

                $msisdn = trim($msisdn);
                if (is_numeric($msisdn)) {
                    if (substr($msisdn, 0, 1) == '1') {
                        $code = substr($msisdn, 0, 1);
                        $ccLength = strlen($code);
                    } elseif (substr($msisdn, 0, 2) == '44' || substr($msisdn, 0, 2) == '32' || substr($msisdn, 0, 2) == '91') {
                        $code = substr($msisdn, 0, 2);
                        $ccLength = strlen($code);
                    } else {
                        $code = substr($msisdn, 0, 3);
                        $ccLength = strlen($code);
                    }

                    $network = SmsTools::which_network($msisdn);
                    $id = '';
                    while (1) {
                        $id = uniqid('NS', true);
                        if (empty(Log::find($id)))
                            break;
                    }

                    $user->pending_single_sms()->create([
                        'msisdn' => $msisdn,
                        'sender' => $sender,
                        'message' => $msgs,
                        'sched_datetime' => $date,
                        'type' => 'mtnuser'
                    ]);
                } else {
                    array_push($rejected_arr, $msisdn);
                    //                    SmsTools::insertRejected(0, $job_id, $user_sess, $msisdn, $sender, $sms_count, $network, $msgs, $submitdt, $created_by, $user);
                    $errorMsg .= 'msisdn(' . $msisdn . ') is not successful, ';
                }
                $no_rej_msisdn = count($rejected_arr);
                //counts number of rejected contacts
                $count++;
            }

            $logged = $nummsisdn - $no_rej_msisdn;

            //update audit trails
            $user->audit_trails()->create([
                'username' => $user->username,
                'date' => Carbon::now()->toDateTimeString(),
                'activity' => $user->username . ' sent an sms through API to ' . $logged . ' msisdn'
            ]);

            if (empty($logged)) {
                if (!empty($errorMsg)) {
                    return [
                        'code' => 404,
                        'message' => $errorMsg
                    ];
                } else {
                    return [
                        'code' => 500,
                        'message' => 'Unable to send sms to ' . $request['destination']
                    ];
                }
            } else {
                return [
                    'code' => 0,
                    'message' => $logged . ' sms successfully sent' . (!empty($errorMsg) ? ', ' . $errorMsg : '!')
                ];
            }
        } else {
            return [
                'code' => 403,
                'message' => "You don't have enough balance to send this message"
            ];
        }
    }

    public function send_email_api(Request $request)
    {
        $username = $request['username'];
        $password = $request['password'];
        $from = $request['from'];
        $to = trim($request['to']);
        $cc = trim($request['cc']);
        $bcc = trim($request['bcc']);
        $subject = $request['subject'];
        $text = $request['text'];
        $html = $request['html'];
        $attachment = $request['attachment'];

        if (empty($username)) {
            return [
                'code' => 402,
                'message' => 'The username is required'
            ];
        }
        if (empty($password)) {
            return [
                'code' => 402,
                'message' => 'The password is required'
            ];
        }
        if (empty($from)) {
            return [
                'code' => 402,
                'message' => 'The source is required'
            ];
        }
        if (empty($to)) {
            return [
                'code' => 402,
                'message' => 'The destination is required'
            ];
        }
        if (empty($subject)) {
            return [
                'code' => 402,
                'message' => 'The subject is required'
            ];
        }
        if (empty($html) && empty($text)) {
            return [
                'code' => 402,
                'message' => 'The message is required'
            ];
        }

        if (!Auth::once([
            'username' => $username,
            'password' => $password
        ])) {
            return [
                'code' => 401,
                'message' => 'Invalid Credential'
            ];
        }
        $curlString = "curl -s --user 'api:key-c2db007fa3f8bb651ad1ffd4bde9d914'  https://api.mailgun.net/v3/mail.messenger.com/messages -F from=$from -F to=$to -F subject=$subject -F text=$text";
        $result = shell_exec($curlString);

        $json = json_decode($result, true);
        $resultMsgPrep = $json['message'];

        $resultMsg = str_replace('"', '', $resultMsgPrep);


        if ($resultMsg == 'Queued. Thank you.') {
            return [
                'code' => 0,
                'message' => 'email successfully sent'
            ];
        } else {
            return [
                'code' => 500,
                'message' => 'email request failed'
            ];
        }
    }

    public function post_send_single_sms(Request $request)
    {
        //get current user
        $user = Auth::user();
        $credit = $user->credit;

        $myUsername = $user->username;
        $myPassword = $request->session()->get('myPassword');

        //get current step
        $step = $request->get('step', 1);

        //process for step 1
        if ($step == 1) {
            //validate the request
            $this->validate($request, [
                'phone_numbers' => 'required',
                'sender_id' => 'required|max:11',
                'schedule_date' => 'present',
                'message_content' => 'required',
                'flash' => 'nullable',
                'image_upload' => 'image'
            ]);

            $filters = Filters::query()->get();

            $banned = array();
            $flash = null;


            foreach ($filters as $filth)
                array_push($banned, strtolower($filth->keyword));


            $new_strings = explode(" ", strtolower($request->message_content));
            $result = array_intersect($banned, $new_strings);
            if (!empty($result)) :
                foreach ($result as $value) :
                    $flash .= $value . ', ';
                endforeach;
                return \redirect()->back()->withErrors("The words {$flash} are not permitted");
            endif;


            //get data for step 2
            $destination = explode(',', $request->get('phone_numbers'));


            $new_msg_text = preg_replace(array('/\r\n/'), array("\n"), trim($request->get('message_content', '')));
            $no_chars = strlen($new_msg_text);
            $no_pages = SmsTools::no_pages($no_chars);

            $sms_count = $no_pages;

            $price = 0.0;
            foreach ($destination as $single_msisdn) {
                $network = SmsTools::get_msisdn_network($user, $single_msisdn);
                $price += (float)$network['sms_price'];
            }
            $cost = $no_pages * $price;
            // cost of sending one msg with this no_pages to one person
            $nummsisdn = count($destination);
            // no of recepients
            $tot_cost = $cost;

            $curr_bal = $credit->new_bal;
            $credit_used = $credit->credit_used;

            $rem_sms = floor($curr_bal / $cost);
            //remaining sms user can send

            $counter = floor($rem_sms / $no_pages);
            $some_cost = $cost * $counter;

            //            $price_per_sms = $cost;
            $recipients = $nummsisdn;
            $total_price = $tot_cost;
            $credit_available = $curr_bal;
            $imgId = null;

            //update image if image exist
            if (!empty($request['image_upload'])) {
                if ($request->file('image_upload')->isValid()) {
                    $current_filename = $request->file('image_upload')->getClientOriginalName();
                    $fileMimeType = $request->file('image_upload')->getMimeType();

                    $destinationPath = storage_path() . DIRECTORY_SEPARATOR . 'uploads' . DIRECTORY_SEPARATOR;
                    $fileName = $user->username . '_' . $current_filename;
                    $request->file('image_upload')->move($destinationPath, $fileName);
                    $full_path = $destinationPath . $fileName;
                    while (1) {
                        $imgId = uniqid();
                        if (empty(SmsImage::find($imgId))) {
                            break;
                        }
                    }
                    $user->sms_images()->create([
                        'path' => $full_path,
                        'file_name' => $current_filename,
                        'mime_type' => $fileMimeType,
                        'id' => $imgId
                    ]);
                } else {
                    return Redirect::back()->withInput()->withErrors(array('image_upload' => 'Sorry, The file upload failed!'));
                }
            }

            $msg = $new_msg_text;
            if (!empty($imgId)) {
                $sms_msg_url = route('sms_image', ['id' => $imgId]);
                $msg = $new_msg_text . "\n" . $sms_msg_url;
            }

            //store user input in the new session data
            session(['single_sms_data' => [
                'phone_numbers' => $request->get('phone_numbers'),
                'sender_id' => $request->get('sender_id'),
                'message_content' => $msg,
                'recipients' => $recipients,
                'total_price' => $total_price,
                'credit_available' => number_format($credit_available, 3),
                'schedule_date' => Carbon::parse($request->get('schedule_date')),
                'flash' => $request->get('flash') ?? 'text',
            ]]);
            // dd(session('single_sms_data'));
            $step = 2;
        } else if ($step == 2) {
            //check if next button was pressed
            if ($request->has('submit')) {
                session(['alert', []]);
                //send single sms now
                $destination = explode(',', session('single_sms_data')['phone_numbers']);
                // dd($request->all());
                $sender = session('single_sms_data')['sender_id'];
                $msgs = session('single_sms_data')['message_content'];
                $msgType = session('single_sms_data')['flash'];
                $cost = session('single_sms_data')['total_price'];
                // cost of sending one msg with this no_pages to one person
                $nummsisdn = count($destination);
                // no of recepients
                $tot_cost = $cost;
                $curr_bal = $credit->new_bal;
                $rejected_arr = [];
                if (isset(session('single_sms_data')['schedule_date']) && !empty(session('single_sms_data')['schedule_date'])) {
                    $sch_date = Carbon::parse(session('single_sms_data')['schedule_date']);
                    $now = Carbon::now();
                    $date = $now->lte($sch_date) ? $sch_date : $now;
                } else {
                    $date = 'ggggg'; //Carbon::now();
                }

                $oneMinuteLater = Carbon::now()->addMinutes(1);
                $sentItNow = $date->lte($oneMinuteLater);
                $data = [];

                if ($curr_bal >= $tot_cost) {
                    $count = 0;
                    $no_rej_msisdn = 0;
                    while ($count !== $nummsisdn) {
                        $number = self::format_phone_number($destination[$count]);
                        $msisdn = preg_replace('/\D/', '', $number);
                        $msisdn = SmsTools::msisdn_prep($msisdn);
                        $msisdn = trim($msisdn);
                        if (is_numeric($msisdn)) {
                            while (1) {
                                $id = uniqid('NS', true);
                                if (empty(Log::find($id)))
                                    break;
                            }
                            if ($sentItNow == false) {
                                $data[] = $msisdn;
                            } else {
                                //                                $user->pending_single_sms()->create([
                                //                                    'msisdn' => $msisdn,
                                //                                    'sender' => $sender,
                                //                                    'message' => $msgs,
                                //                                    'sched_datetime' => $date
                                //                                ]);
                                $myUsername = urlencode($myUsername);
                                $myPassword = urlencode($myPassword);
                                $myMessage = urlencode($msgs);

                                if ($msgType == 'flash') {
                                    $directSubmit = file_get_contents("https://mtnmessenger.com/api/sms?username=$myUsername&password=$myPassword&source=$sender&destination=$msisdn&message=$myMessage&type=$msgType");
                                } else {
                                    $directSubmit = file_get_contents("https://mtnmessenger.com/api/sms?username=$myUsername&password=$myPassword&source=$sender&destination=$msisdn&message=$myMessage");
                                }

                                $this->logging($now, "Single SMS fired| | username: $myUsername |", $directSubmit);
                                //SmsTools::send_single_sms($id, $job_id, $msisdn, $sender, $sms_count, $network, $msgs, $submitdt, $created_by, $user);
                            }
                        } else {
                            array_push($rejected_arr, $msisdn);
                            $request->session()->push('alert', $msisdn . ' not successful');
                        }
                        $no_rej_msisdn = count($rejected_arr);
                        //counts number of rejected contacts
                        $count++;
                    }

                    if ($sentItNow == false) {
                        foreach ($data as $dat) {
                            //                            $user->pending_single_sms()->create([
                            //                                'msisdn' => $dat,
                            //                                'sender' => $sender,
                            //                                'message' => $msgs,
                            //                                'sched_datetime' => $date
                            //                            ]);
                            $myUsername = urlencode($myUsername);
                            $myPassword = urlencode($myPassword);
                            $myMessage = urlencode($msgs);

                            if ($msgType == 'flash') {
                                $directSubmit = file_get_contents("https://mtnmessenger.com/api/sms?username=$myUsername&password=$myPassword&source=$sender&destination=$msisdn&message=$myMessage&type=$msgType");
                            } else {
                                $directSubmit = file_get_contents("https://mtnmessenger.com/api/sms?username=$myUsername&password=$myPassword&source=$sender&destination=$msisdn&message=$myMessage");
                            }
                            $this->logging($now, "Single SMS fired| username: $myUsername |", $directSubmit);
                        }

                        //update audit trails
                        $user->audit_trails()->create([
                            'username' => $user->username,
                            'date' => Carbon::now()->toDateTimeString(),
                            'activity' => $user->username . ' sent a single sms to ' . count($data) . ' msisdn'
                        ]);

                        $logged = count($data);

                        if ($no_rej_msisdn == 0) {
                            $request->session()->flash('success', $logged . ' message(s) successfully scheduled!');
                        } else {
                            $request->session()->flash('success', $logged . ' messages successfully scheduled, ' . $no_rej_msisdn . ' rejected');
                        }
                    } else {
                        $logged = $nummsisdn - $no_rej_msisdn;

                        //update audit trails
                        $user->audit_trails()->create([
                            'username' => $user->username,
                            'date' => Carbon::now()->toDateTimeString(),
                            'activity' => $user->username . ' sent a single sms to ' . $logged . ' msisdn'
                        ]);

                        if ($no_rej_msisdn == 0) {
                            $request->session()->flash('success', $logged . ' message(s) successfully sent!');
                        } else {
                            $request->session()->flash('success', $logged . ' message(s) successfully sent!, ' . $no_rej_msisdn . ' rejected');
                        }
                    }
                } else {
                    return Redirect::back()->withInput()->withErrors(array('error' => 'Sorry, you don\'t have enough credit to proceed!'));
                }

                //reset session
                $step = 0;
                $request->session()->forget('single_sms_data');
                if (!$request->session()->has('success') || empty(session('success')))
                    $request->session()->flash('success', 'Your SMS Message has been successfully sent!');
            }
            //in case back button was pressed
            else {
                //go back to step 1
                $step = 1;
            }
        }
        return view('sms.send_single_sms', ['step' => $step]);
    }

    public function send_personalised_bulk_sms()
    {
        $step = 1;
        //reset current session data for sending single sms
        // if(session()->has('bulk_sms_personalised_data')) {
        //     session()->forget('bulk_sms_personalised_data');
        // }

        if (!session('bulk_sms_personalised_data')) {
            $this->resetBulkSmsPersonalisedData();
        }
        if (session()->has('alert')) {
            session()->forget('alert');
        }
        //show view
        return view('sms.send_bulk_personalised_sms', [
            'step' => $step,
            'sender_ids' => UserSenderId::query()->where([['user_id', Auth::user()->id], ['status', 1]])->get()
        ]);
    }

    public function send_personalised_group_sms(Request $request, TmpGroupSmsDataTable $dataTable)
    {
        if ($request->has('draw')) {
            return $dataTable->render('sms.send_personalised_group_sms', ['step' => 3]);
        }

        $step = 1;
        //reset current session data for sending group sms
        //        if($request->session()->has('group_sms_personalised_data')) {
        //            $request->session()->forget('group_sms_personalised_data');
        //        }

        if (!session('group_sms_personalised_data')) {
            $this->resetPersonalisedGroupSmsData($request);
        }

        if ($request->session()->has('alert')) {
            $request->session()->forget('alert');
        }

        //fetch user groups
        $groups = $request->user()->groups()->orderBy('name', 'asc')->get(['name', 'id']);

        //show view
        return view('sms.send_personalised_group_sms', [
            'step' => $step,
            'groups' => $groups,
            'sender_ids' => UserSenderId::query()->where([['user_id', Auth::user()->id], ['status', 1]])->get()
        ]);
    }

    public function post_send_personalised_bulk_sms(Request $request)
    {
        //get current user
        $user = Auth::user();
        $credit = $user->credit;

        //get current step
        $step = $request->get('step', 1);

        //process for step 1
        if ($step == 1) {
            //validate the request
            $this->validate($request, [
                'file_upload'       => 'required|mimes:csv,txt,xlsx,xls',
                'sender_id'         => 'required|max:11',
                'schedule_date'     => 'present',
                'name'              => 'required',
                'image_upload'      => 'image'
            ]);

            /*************************************************/

            $filters = Filters::query()->get();

            $banned = array();
            $flash = null;


            foreach ($filters as $filth)
                array_push($banned, strtolower($filth->keyword));


            $new_strings = explode(" ", strtolower($request->message_content));
            $result = array_intersect($banned, $new_strings);
            if (!empty($result)) :
                foreach ($result as $value) :
                    $flash .= $value . ', ';
                endforeach;
                return \redirect()->back()->withErrors("The following words are not permitted:  {$flash}");
            endif;

            /** @var  $current_filename */


            $current_filename = $request->file('file_upload')->getClientOriginalName();
            $filename_splitted = explode(".", $current_filename);
            $extension = end($filename_splitted);

            $destinationPath = storage_path() . DIRECTORY_SEPARATOR . 'bulk_sms' . DIRECTORY_SEPARATOR;
            $fileName = $user->username . '_' . date('YmdHis') . '.' . $extension;
            $full_filename = $destinationPath . $fileName;

            if ($request->file('file_upload')->isValid()) {
                $request->file('file_upload')->move($destinationPath, $fileName);
                @chmod($full_filename, 0777);
            } else {
                return Redirect::back()->withInput()->withErrors(array('file_upload' => 'Sorry, The file upload failed!'));
            }

            $highestRow = 0;
            $headers = [];
            $first_record = [];

            try {
                $spreadsheet = IOFactory::load($full_filename);
                $sheet = $spreadsheet->getActiveSheet();
                $highestRow = $sheet->getHighestRow() - 1;
                $highestColumn = $sheet->getHighestColumn();
                //  Read a row of data into an array
                $rowData = $sheet->rangeToArray('A' . 1 . ':' . $highestColumn . 1, NULL, TRUE, FALSE);

                $my_count = 0;
                $rowData2 = $sheet->rangeToArray('A' . 2 . ':' . $highestColumn . 2, NULL, TRUE, FALSE);
                $row = $rowData[0];
                $row2 = $rowData2[0];
                foreach ($row as $header)
                    $headers[] = $header;
                foreach ($row2 as $header2) {
                    $first_record[] = $header2;
                    $my_count += 1;

                }
            } catch (\Exception $e) {
                \Illuminate\Support\Facades\Log::info($e->getMessage());
                return Redirect::back()->withInput()->withErrors(array('file_upload' => 'Error! Your excel file is invalid!--'));
            }

            $imgId = null;

            //update image if image exist
            if (!empty($request['image_upload'])) {
                if ($request->file('image_upload')->isValid()) {
                    $current_filename = $request->file('image_upload')->getClientOriginalName();
                    $fileMimeType = $request->file('image_upload')->getMimeType();

                    $destinationPath = storage_path() . DIRECTORY_SEPARATOR . 'uploads' . DIRECTORY_SEPARATOR;
                    $fileName = $user->username . '_' . $current_filename;
                    $request->file('image_upload')->move($destinationPath, $fileName);
                    $full_path = $destinationPath . $fileName;
                    while (1) {
                        $imgId = uniqid();
                        if (empty(SmsImage::find($imgId))) {
                            break;
                        }
                    }
                    $user->sms_images()->create([
                        'path' => $full_path,
                        'file_name' => $current_filename,
                        'mime_type' => $fileMimeType,
                        'id' => $imgId
                    ]);
                } else {
                    return Redirect::back()->withInput()->withErrors(array('image_upload' => 'Sorry, The file upload failed!'));
                }
            }

            $msg = $request->get('message_content', '');
            $msg = preg_replace(array('/\r\n/'), array("\n"), trim($msg));
            if (!empty($imgId)) {
                $sms_msg_url = route('sms_image', ['id' => $imgId]);
                $msg = $msg . "\n" . $sms_msg_url;
            }

            //store user input in the new session data
            session(['bulk_sms_personalised_data' => [
                'phone_numbers' => $current_filename,
                'sender_id' => $request->get('sender_id'),
                'recipients' => $highestRow,
                'path' => $full_filename,
                'schedule_date' => Carbon::parse($request->get('schedule_date')),
                'headers' => $headers,
                'first_record' => $first_record,
                'name' => $request->get('name'),
                'msg' => $msg,
                'remove_duplicate' => request()->has('remove_duplicate'),
                'estimated_price' => $highestRow * auth()->user()->credit->price
            ]]);
            // dd(session('bulk_sms_personalised_data')['schedule_date']);
            $step = 2;
        }
        //process for step 2
        else if ($step == 2) {
            //check if next button was pressed
            if ($request->has('next')) {
                $new_msg_text = preg_replace(array('/\r\n/'), array("\n"), trim($request->get('message_content', '')));
                $imgUrl = isset(session('bulk_sms_personalised_data')['msg']) ? session('bulk_sms_personalised_data')['msg'] : '';
                $message = $new_msg_text . $imgUrl;
                if (empty($message)) {
                    $step = 2;
                    $request->session()->flash('error_msg', 'Kindly enter the text message!');
                } else {
                    //get data for step 2
                    $nummsisdn = session('bulk_sms_personalised_data')['recipients'];

                    $curr_bal = $credit->new_bal;
                    $recipients = $nummsisdn;

                    $headers = session('bulk_sms_personalised_data')['headers'];
                    $first_record = session('bulk_sms_personalised_data')['first_record'];

                    //store user input in the new session data
                    session(['bulk_sms_personalised_data' => [
                        'phone_numbers' => session('bulk_sms_personalised_data')['phone_numbers'],
                        'sender_id' => session('bulk_sms_personalised_data')['sender_id'],
                        'message_content' => $message,
                        'temp_msg' => SpeedyPersoBulkSms::update_msg($headers, $first_record, $message),
                        'recipients' => $recipients,
                        'credit_available' => $curr_bal,
                        'msg' => $imgUrl,
                        'path' => session('bulk_sms_personalised_data')['path'],
                        'schedule_date' => session('bulk_sms_personalised_data')['schedule_date'],
                        'headers' => session('bulk_sms_personalised_data')['headers'],
                        'first_record' => session('bulk_sms_personalised_data')['first_record'],
                        'name' => session('bulk_sms_personalised_data')['name'],
                        'remove_duplicate' => session('bulk_sms_personalised_data')['remove_duplicate'],
                        'estimated_price' => $recipients * auth()->user()->credit->price
                    ]]);
                    // dd(session('bulk_sms_personalised_data')['schedule_date']);
                    $step = 3;
                }
            }
            //in case back button was pressed
            else {
                //go back to step 1
                $step = 1;
            }
        } else if ($step == 3) {
            //check if next button was pressed
            if ($request->has('submit')) {
                $no_chars = strlen(session('bulk_sms_personalised_data')['message_content']);
                $sender = session('bulk_sms_personalised_data')['sender_id'];
                $nummsisdn = session('bulk_sms_personalised_data')['recipients'];
                $msgs = session('bulk_sms_personalised_data')['message_content'];
                $path = session('bulk_sms_personalised_data')['path'];
                $name = session('bulk_sms_personalised_data')['name'];
                $remove_duplicate = session('bulk_sms_personalised_data')['remove_duplicate'];

                $no_pages = SmsTools::no_pages($no_chars);

                $curr_bal = $credit->new_bal;

                if (isset(session('bulk_sms_personalised_data')['schedule_date']) && !empty(session('bulk_sms_personalised_data')['schedule_date'])) {
                    $sch_date = Carbon::parse(session('bulk_sms_personalised_data')['schedule_date']);
                    $now = Carbon::now()->addMinutes(1);
                    $date = $now->lte($sch_date) ? $sch_date : $now;
                } else {
                    $date = Carbon::now()->addMinutes(1);
                }

                if ($nummsisdn * $credit->price <= $curr_bal) {
                    //Create a job
                    $job = new UserJob([
                        'username' => $user->username,
                        'sender' => $sender,
                        'message' => $msgs,
                        'sms_count' => $no_pages,
                        'type' => 'p_bulk',
                        'sched_datetime' => $date,
                        'status' => 'pending',
                        'created_by' => $user->username,
                        'file_path' => $path,
                        'name' => $name,
                        'total_traffic' => $nummsisdn,
                        'remove_duplicate' => $remove_duplicate
                    ]);

                    if (empty($sender)) {
                        return redirect()->route('app');
                    }

                    $user->jobs()->save($job);

                    //update audit trails
                    $user->audit_trails()->create([
                        'username' => $user->username,
                        'date' => Carbon::now()->toDateTimeString(),
                        'activity' => $user->username . ' sent a personalised bulk sms to ' . $nummsisdn . ' msisdn'
                    ]);

                    //send blast alert
                    $alertThreshold = intval(env('BLAST_ALERT', 100));
                    if (intval($nummsisdn) >= $alertThreshold) {
                        SmsTools::sendBlastAlert($user, $nummsisdn);
                    }

                    $request->session()->flash('success', 'The contacts was successfully uploaded!');
                } else {
                    return Redirect::back()->withInput()->withErrors(array('error' => 'Sorry, you don\'t have enough credit to proceed!'));
                }

                //reset session
                $step = 0;
                $request->session()->forget('bulk_sms_personalised_data');
                if (!$request->session()->has('success') || empty(session('success')))
                    $request->session()->flash('success', 'Your contacts was successfully uploaded!');
            }
            //in case back button was pressed
            else {
                //go back to step 1
                $step = 2;
            }
        }

        return view('sms.send_bulk_personalised_sms', [
            'step' => $step,
            'sender_ids' => UserSenderId::query()->where([['user_id', Auth::user()->id], ['status', 1]])->get()
        ]);
    }

    public function post_send_bulk_sms(Request $request)
    {
        //get current user
        $user = Auth::user();
        $credit = $user->credit;

        //get current step
        $step = $request->get('step', 1);

        //process for step 1
        if ($step == 1) {
            //validate the request
            $this->validate($request, [
                'file_upload'       => 'required|mimes:csv,txt,xlsx,xls',
                'sender_id'         => 'required|max:11',
                'schedule_date'     => 'present',
                'message_content'   => 'required',
                'name'              => 'required',
                'image_upload'      => 'image'
            ]);


            /***  We get the filters from here ***/
            $filters = Filters::query()->get();
            // dd($filters);

            /** @var  $banned @as an array for the newly filtered records  */
            $banned = array();
            /** @var  $flash @for linear array */
            $flash = null;

            /** @var  $filth @foreach to loop through keywords  **/
            foreach ($filters as $filth)
                array_push($banned, strtolower($filth->keyword));

            // dd($banned);
            /** @var  $new_strings @exploding occurs here  **/
            $new_strings = explode(" ", strtolower($request->message_content));
            // dd($new_strings);
            $result = array_intersect($banned, $new_strings);
            // dd($result);
            if (!empty($result)) :
                foreach ($result as $value) :
                    $flash .= $value . ', ';
                endforeach;
                return \redirect()->back()->withErrors("The following words are not permitted:  {$flash}");
            endif;


            /** @var  @the rest @occurs here */


            $current_filename = $request->file('file_upload')->getClientOriginalName();
            $filename_splitted = explode(".", $current_filename);
            $extension = end($filename_splitted);

            $destinationPath = storage_path() . DIRECTORY_SEPARATOR . 'bulk_sms' . DIRECTORY_SEPARATOR;
            $fileName = $user->username . '_' . date('YmdHis') . '.' . $extension;
            $full_filename = $destinationPath . $fileName;
            // dd($destinationPath);
            if ($request->file('file_upload')->isValid()) {
                $request->file('file_upload')->move($destinationPath, $fileName);
                @chmod($full_filename, 0777);
            } else {
                return Redirect::back()->withInput()->withErrors(array('file_upload' => 'Sorry, The file upload failed!'));
            }

            $highestRow = 0;

            try {
                Excel::load($full_filename, function ($reader) use (&$highestRow) {
                    $highestRow = $reader->getActiveSheet()->getHighestRow();
                });
                // dd($highestRow);
//                Excel::load($full_filename, function ($reader) use (&$highestRow) {
//                    $worksheet = $reader->getExcel()->getSheet(0);
//                    $highestRow = 0;
//                    // dd('qqgq');
//                    foreach ($worksheet->getRowIterator() as $row) {
//                        $cellIterator = $row->getCellIterator();
//                        $cellIterator->setIterateOnlyExistingCells(false); // include empty cells
//                        $rowValues = [];
//                        foreach ($cellIterator as $cell) {
//                            $rowValues[] = $cell->getValue();
//                        }
//                        // Check if the first column is numeric
//                        if (is_numeric($rowValues[0])) {
//                            $highestRow++;
//                        }
//                    }
//                });
                // $highestRow = 0;
            } catch (\Throwable $e) {
                // dd($e->getMessage());
                return Redirect::back()->withInput()->withErrors(array('file_upload' => 'Error!- Your excel file is invalid!'));
            }

            //get data for step 2
            $new_msg_text = preg_replace(array('/\r\n/'), array("\n"), trim($request->get('message_content', '')));
            $imgId = null;

            //update image if image exist
            if (!empty($request['image_upload'])) {
                if ($request->file('image_upload')->isValid()) {
                    $current_filename = $request->file('image_upload')->getClientOriginalName();
                    $fileMimeType = $request->file('image_upload')->getMimeType();

                    $destinationPath = storage_path() . DIRECTORY_SEPARATOR . 'uploads' . DIRECTORY_SEPARATOR;
                    $fileName = $user->username . '_' . $current_filename;
                    $request->file('image_upload')->move($destinationPath, $fileName);
                    $full_path = $destinationPath . $fileName;
                    while (1) {
                        $imgId = uniqid();
                        if (empty(SmsImage::find($imgId))) {
                            break;
                        }
                    }
                    $user->sms_images()->create([
                        'path' => $full_path,
                        'file_name' => $current_filename,
                        'mime_type' => $fileMimeType,
                        'id' => $imgId
                    ]);
                } else {
                    return Redirect::back()->withInput()->withErrors(array('image_upload' => 'Sorry, The file upload failed!'));
                }
            }

            $msg = $new_msg_text;
            if (!empty($imgId)) {
                $sms_msg_url = route('sms_image', ['id' => $imgId]);
                $msg = $new_msg_text . "\n" . $sms_msg_url;
            }

            //store user input in the new session data
            session(['bulk_sms_data' => [
                'phone_numbers' => $current_filename,
                'sender_id' => $request->get('sender_id'),
                'flash' => $request->get('flash'),
                'message_content' => $msg,
                'recipients' => $highestRow,
                'path' => $full_filename,
                'credit_available' => number_format($credit->new_bal, 2),
                'schedule_date' => $request->get('schedule_date'),
                'name' => $request->get('name'),
                'remove_duplicate' => $request->has('remove_duplicate'),
                'estimated_price' => $highestRow * auth()->user()->credit->price
            ]]);
            $step = 2;
        }
        //process for step 2
        else if ($step == 2) {
            //check if next button was pressed
            if ($request->has('submit')) {
                $no_chars = strlen(session('bulk_sms_data')['message_content']);
                $sender = session('bulk_sms_data')['sender_id'];
                $flash = session('bulk_sms_data')['flash'];
                $nummsisdn = session('bulk_sms_data')['recipients'];
                $msgs = session('bulk_sms_data')['message_content'];
                $path = session('bulk_sms_data')['path'];
                $name = session('bulk_sms_data')['name'];
                $remove_duplicate = session('bulk_sms_data')['remove_duplicate'];

                $no_pages = SmsTools::no_pages($no_chars);
                $curr_bal = $credit->new_bal;

                //remaining sms user can send

                if (isset(session('bulk_sms_data')['schedule_date']) && !empty(session('bulk_sms_data')['schedule_date'])) {
                    $sch_date = Carbon::parse(session('bulk_sms_data')['schedule_date']);
                    $now = Carbon::now()->addMinutes(1);
                    $date = $now->lte($sch_date) ? $sch_date : $now;
                } else {
                    $date = Carbon::now()->addMinutes(1);
                }

                if ($nummsisdn * $credit->price <= $curr_bal) {
                    //Create a job
                    $job = new UserJob([
                        'username' => $user->username,
                        'sender' => $sender,
                        'message' => $msgs,
                        'sms_count' => $no_pages,
                        'type' => 'bulk',
                        'sched_datetime' => $date,
                        'status' => 'pending',
                        'created_by' => $user->username,
                        'file_path' => $path,
                        'name' => $name,
                        'total_traffic' => $nummsisdn,
                        'remove_duplicate' => $remove_duplicate,
                        'flash' => $flash
                    ]);

                    if (empty($sender)) {
                        return redirect()->route('app');
                    }

                    $user->jobs()->save($job);

                    //update audit trails
                    $user->audit_trails()->create([
                        'username' => $user->username,
                        'date' => Carbon::now()->toDateTimeString(),
                        'activity' => $user->username . ' sent a bulk sms to ' . $nummsisdn . ' msisdn'
                    ]);

                    //send blast alert
                    $alertThreshold = intval(env('BLAST_ALERT', 100));
                    if (intval($nummsisdn) >= $alertThreshold) {
                        SmsTools::sendBlastAlert($user, $nummsisdn);
                    }

                    $request->session()->flash('success', 'The contacts was successfully uploaded!');
                } else {
                    return Redirect::back()->withInput()->withErrors(array('error' => 'Sorry, you don\'t have enough credit to proceed!'));
                }

                //reset session
                $step = 0;
                $request->session()->forget('bulk_sms_data');
                if (!$request->session()->has('success') || empty(session('success')))
                    $request->session()->flash('success', 'Your contacts was successfully uploaded!');
            }
            //in case back button was pressed
            else {
                //go back to step 1
                $step = 1;
            }
        }

        $templates = SavedMessage::where('user_id', auth()->id())->get();
        return view('sms.send_bulk_sms', [
            'step' => $step, 'templates' => $templates,
            'sender_ids' => UserSenderId::query()->where([['user_id', Auth::user()->id], ['status', 1]])->get()
        ]);
    }

    public function delete_contact_from_sms_group($msisdn)
    {
    }

    public function post_send_group_sms(Request $request, TmpGroupSmsDataTable $dataTable)
    {
        //get current user
        $user = Auth::user();
        $credit = $user->credit;

        //get current step
        $step = $request->get('step', 1);

        //process for step 1
        if ($step == 1) {
            //validate the request
            $this->validate($request, [
                'selected_group' => 'required',
                'sender_id' => 'required|max:11',
                'schedule_date' => 'present',
                'message_content' => 'required',
                'name' => 'required',
                'image_upload' => 'image'
            ]);


            $filters = Filters::query()->get();

            $banned = array();
            $flash = null;


            foreach ($filters as $filth)
                array_push($banned, strtolower($filth->keyword));


            $new_strings = explode(" ", strtolower($request->message_content));
            $result = array_intersect($banned, $new_strings);
            if (!empty($result)) :
                foreach ($result as $value) :
                    $flash .= $value . ', ';
                endforeach;
                return \redirect()->back()->withErrors("The following words are not permitted:  {$flash}");
            endif;


            $highestRow = 0;
            $selected_groups = $request->get('selected_group');
            $group_name = '';
            $data = [];

            DB::beginTransaction();
            $user->tmp_group_sms()->delete();

            if (!empty($selected_groups))
                foreach ($selected_groups as $group_id) {
                    $group = $user->groups()->find($group_id);
                    if (!empty($group)) {
                        $group_name .= ($group->name . ', ');
                        $highestRow += $group->contacts()->count();
                        $group->contacts()->chunk(5000, function ($contacts)
                        use (&$user) {
                            foreach ($contacts as $contact) {
                                $existing = DB::table('tmp_group_sms')->where([
                                    ['user_id', '=', $user->id],
                                    ['msisdn', '=', $contact->phone_number]
                                ])->first();

                                if (empty($existing)) {
                                    DB::table('tmp_group_sms')->insert([
                                        'user_id' => $user->id,
                                        'name' => $contact->name,
                                        'msisdn' => $contact->phone_number
                                    ]);
                                }
                            }
                        });
                    }
                }
            DB::commit();

            $imgId = null;

            //update image if image exist
            if (!empty($request['image_upload'])) {
                if ($request->file('image_upload')->isValid()) {
                    $current_filename = $request->file('image_upload')->getClientOriginalName();
                    $fileMimeType = $request->file('image_upload')->getMimeType();

                    $destinationPath = storage_path() . DIRECTORY_SEPARATOR . 'uploads' . DIRECTORY_SEPARATOR;
                    $fileName = $user->username . '_' . $current_filename;
                    $request->file('image_upload')->move($destinationPath, $fileName);
                    $full_path = $destinationPath . $fileName;
                    while (1) {
                        $imgId = uniqid();
                        if (empty(SmsImage::find($imgId))) {
                            break;
                        }
                    }
                    $user->sms_images()->create([
                        'path' => $full_path,
                        'file_name' => $current_filename,
                        'mime_type' => $fileMimeType,
                        'id' => $imgId
                    ]);
                } else {
                    return Redirect::back()->withInput()->withErrors(array('image_upload' => 'Sorry, The file upload failed!'));
                }
            }

            $new_msg_text = preg_replace(array('/\r\n/'), array("\n"), trim($request->get('message_content', '')));
            $msg = $new_msg_text;
            if (!empty($imgId)) {
                $sms_msg_url = route('sms_image', ['id' => $imgId]);
                $msg = $new_msg_text . "\n" . $sms_msg_url;
            }

            //store user input in the new session data
            session(['group_sms_data' => [
                'group_name' => $group_name,
                'sender_id' => $request->get('sender_id'),
                'message_content' => $msg,
                'groups' => $selected_groups,
                'schedule_date' => Carbon::parse($request->get('schedule_date')),
                'name' => $request->get('name'),
                'selected_group' => $request->get('selected_group')
            ]]);
            $step = 2;
        }
        //process for step 2
        else if ($step == 2) {
            //check if next button was pressed
            if ($request->has('next')) {
                $highestRow = $user->tmp_group_sms()->count();
                //check if user can send sms
                if ($highestRow > 0) {
                    //do the calculation and move to step 3
                    //get data for step 2
                    $no_chars = strlen(session('group_sms_data')['message_content']);
                    $no_pages = SmsTools::no_pages($no_chars);

                    $price = 0.0;
                    foreach ($user->tmp_group_sms as $tempp) {
                        $network = SmsTools::get_msisdn_network($user, $tempp->msisdn);
                        $price += (float)$network['sms_price'];
                    }
                    $cost = $no_pages * $price;
                    // cost of sending one msg with this no_pages to one person
                    $nummsisdn = $highestRow;
                    $tot_cost = $cost;
                    $curr_bal = $credit->new_bal;


                    $recipients = $nummsisdn;
                    $total_price = $tot_cost;
                    $credit_available = $curr_bal;

                    session(['group_sms_data' => [
                        'group_name' => session('group_sms_data')['group_name'],
                        'sender_id' => session('group_sms_data')['sender_id'],
                        'message_content' => session('group_sms_data')['message_content'],
                        'groups' => session('group_sms_data')['groups'],
                        //                        'price_per_sms' => $price_per_sms,
                        'recipients' => $recipients,
                        'total_price' => $total_price,
                        'credit_available' => number_format($credit_available, 3),
                        'schedule_date' => session('group_sms_data')['schedule_date'],
                        'name' => session('group_sms_data')['name'],
                        'selected_group' => session('group_sms_data')['selected_group'],
                    ]]);

                    //move to step 3
                    $step = 3;
                } else {
                    //prevent user from access step3
                    $request->session()->flash('error_msg', 'Kindly add some phone number(s)');
                    $step = 2;
                }
            } else if ($request->has('add_msisdn_btn')) {
                $input = $request->get('add_msisdn_input');
                if (empty(trim($input))) {
                    $request->session()->flash('error_msg', 'Kindly enter the msisdn to be added');
                }

                $tmp_msisdn_list = explode(',', $input);
                $added = 0;
                if (!empty($tmp_msisdn_list))
                    foreach ($tmp_msisdn_list as $temp) {
                        $temp = trim($temp);
                        if (!empty($temp)) {
                            if (!empty($user->tmp_group_sms()->where('msisdn', $temp)->first())) {
                                $request->session()->flash('error_msg', $temp . ' already exists in the list!');
                                break;
                            }
                            $user->tmp_group_sms()->create(['msisdn' => $temp]);
                            $added++;
                        }
                    }
                if ($added > 0)
                    $request->session()->flash('success_msg', $added . ' msisdn added to the list!');
                $step = 2;
            } else if ($request->has('delete_item')) {
                $input = $request->get('delete_item');
                $contact = $user->tmp_group_sms()->where('msisdn', $input)->first();
                if (!empty($contact)) {
                    $contact->delete();
                    $request->session()->flash('success_msg', $input . ' was deleted from the list!');
                } else {
                    $request->session()->flash('error_msg', $input . ' not found in the list!');
                }
                $step = 2;
            } else if ($request->has('delete_selection')) {
                $selection = $request->get('selection');
                $deleted = 0;
                if (!empty($selection))
                    foreach ($selection as $msisdn) {
                        $contact = $user->tmp_group_sms()->where('msisdn', $msisdn)->first();
                        if (!empty($contact)) {
                            $contact->delete();
                            $deleted++;
                        } else {
                            $request->session()->flash('error_msg', $msisdn . ' not found in the list!');
                        }
                    }
                if ($deleted > 0)
                    $request->session()->flash('success_msg', $deleted . ' msisdn deleted from the list!');
                $step = 2;
            }
            //in case back button was pressed
            else if ($request->has('back')) {
                //go back to step 1
                $step = 1;
            }
        } else if ($step == 3) {
            //check if next button was pressed
            if ($request->has('submit')) {
                $no_chars = strlen(session('group_sms_data')['message_content']);
                $sender = session('group_sms_data')['sender_id'];
                $nummsisdn = session('group_sms_data')['recipients'];
                $msgs = session('group_sms_data')['message_content'];
                $name = session('group_sms_data')['name'];
                if (!empty(session('group_sms_data')) && !empty(session('group_sms_data')['selected_group']))
                    $group_ids = implode(",", session('group_sms_data')['selected_group']);
                else
                    return back()->withInput(request()->all())->withErrors(['error' => 'The contact group is required!']);
                $cost = session('group_sms_data')['total_price'];

                $no_pages = SmsTools::no_pages($no_chars);

                $price = $credit->price;
                $tot_cost = $cost;

                $curr_bal = $credit->new_bal;

                //remaining sms user can send

                if (isset(session('group_sms_data')['schedule_date']) && !empty(session('group_sms_data')['schedule_date'])) {
                    $sch_date = Carbon::parse(session('group_sms_data')['schedule_date']);
                    $now = Carbon::now()->addMinutes(1);
                    $date = $now->lte($sch_date) ? $sch_date : $now;
                } else {
                    $date = Carbon::now()->addMinutes(1);
                }

                if ($curr_bal >= $tot_cost) {
                    //copy msisdn to excel file and add it to the pending job list
                    $destinationPath = storage_path('bulk_sms');
                    $fileName = $user->username . '_' . date('YmdHis');

                    try {
                        $res = Excel::create($fileName, function ($excel) use (&$user) {
                            // Set the title
                            $excel->setTitle('GROUP SMS Details');
                            // Chain the setters
                            $excel->setCreator('Alphonse')->setCompany('Npontu');
                            $excel->setDescription('Send Group SMS Details');

                            $excel->sheet('Msisdn', function ($sheet) use (&$user) {
                                $sheet->setOrientation('landscape');
                                $i = 0;
                                $data = $user->tmp_group_sms()->get();
                                foreach ($data as $dat) {
                                    $i++;
                                    $sheet->appendRow($i, [$dat->msisdn]);
                                }
                                $user->tmp_group_sms()->delete();
                            });
                        })->store('xls', $destinationPath, true);
                    } catch (\Exception $e) {
                        $request->session()->flash('error_msg', 'Sorry, an error occurred while scheduling the blast!');
                        \Illuminate\Support\Facades\Log::error($e->getMessage());
                        $step = 3;
                        $templates = SavedMessage::where('user_id', auth()->id())->get();
                        return view('sms.send_group_sms', ['step' => $step, 'templates' => $templates]);
                    }
                    //Create a job
                    if (empty($sender)) {
                        return redirect()->route('app');
                    }

                    UserJob::create([
                        'username' => $user->username,
                        'user_id' => $user->id,
                        'sender' => $sender,
                        'message' => $msgs,
                        'sms_count' => $no_pages,
                        'sched_datetime' => $date,
                        'type' => 'group',
                        'status' => 'pending',
                        'created_by' => $user->username,
                        'file_path' => $res['full'],
                        'name' => $name,
                        'total_traffic' => $nummsisdn,
                        'group_ids' => $group_ids
                    ]);
                    @chmod($res['full'], 0777);

                    //update audit trails
                    $user->audit_trails()->create([
                        'username' => $user->username,
                        'date' => Carbon::now()->toDateTimeString(),
                        'activity' => $user->username . ' sent a group sms to ' . $nummsisdn . ' msisdn'
                    ]);

                    //send blast alert
                    $alertThreshold = intval(env('BLAST_ALERT', 100));
                    if (intval($nummsisdn) >= $alertThreshold) {
                        SmsTools::sendBlastAlert($user, $nummsisdn);
                    }

                    $request->session()->flash('success', 'The contacts was successfully uploaded!');
                } else {
                    $request->session()->flash('error_msg', 'Sorry, you don\'t have enough credit to proceed!');
                }

                //reset session
                $step = 0;
                $request->session()->forget('group_sms_data');
                if (!$request->session()->has('success') || empty(session('success')))
                    $request->session()->flash('success', 'Your contacts was successfully uploaded!');
            }
            //in case back button was pressed
            else {
                //go back to step 1
                $step = 2;
            }
        }

        $templates = SavedMessage::where('user_id', auth()->id())->get();

        if ($step == 1) {
            //fetch user groups
            $groups = $request->user()->groups()->orderBy('name', 'asc')->get(['name', 'id']);
            return view('sms.send_group_sms', [
                'step' => $step, 'groups' => $groups, 'templates' => $templates,
                'sender_ids' => UserSenderId::query()->where([['user_id', Auth::user()->id], ['status', 1]])->get()
            ]);
        } else if ($step == 2) {
            return $dataTable->render('sms.send_group_sms', ['step' => $step, 'templates' => $templates]);
        } else {
            return view('sms.send_group_sms', [
                'step' => $step, 'templates' => $templates,
                'sender_ids' => UserSenderId::query()->where([['user_id', Auth::user()->id], ['status', 1]])->get()
            ]);
        }
    }

    public function post_send_personalised_group_sms(Request $request, TmpGroupSmsDataTable $dataTable)
    {
        //get current user
        $user = Auth::user();
        $credit = $user->credit;

        //get current step
        $step = $request->get('step', 1);

        //process for step 1
        if ($step == 1) {
            //validate the request
            $this->validate($request, [
                'selected_group' => 'required',
                'sender_id' => 'required|max:11',
                'schedule_date' => 'present',
                'name' => 'required',
                'image_upload' => 'image'
            ]);
            /** @var  $highestRow ***/


            $filters = Filters::query()->get();

            $banned = array();
            $flash = null;


            foreach ($filters as $filth)
                array_push($banned, strtolower($filth->keyword));


            $new_strings = explode(" ", strtolower($request->message_content));
            $result = array_intersect($banned, $new_strings);
            if (!empty($result)) :
                foreach ($result as $value) :
                    $flash .= $value . ', ';
                endforeach;
                return \redirect()->back()->withErrors("The following words are not permitted:  {$flash}");
            endif;

            $highestRow = 0;
            $selected_groups = $request->get('selected_group');
            $group_name = '';
            $counter = 0;

            DB::beginTransaction();
            $user->tmp_group_sms()->delete();

            if (!empty($selected_groups))
                foreach ($selected_groups as $group_id) {
                    $group = $user->groups()->find($group_id);
                    if (!empty($group)) {
                        $group_name .= ($group->name . ', ');
                        $highestRow += $group->contacts()->count();
                        $group->contacts()->chunk(5000, function ($contacts)
                        use (&$user, &$counter) {
                            foreach ($contacts as $contact) {
                                $existing = DB::table('tmp_group_sms')->where([
                                    ['user_id', '=', $user->id],
                                    ['msisdn', '=', $contact->phone_number]
                                ])->first();

                                if (empty($existing)) {
                                    $counter++;
                                    DB::table('tmp_group_sms')->insert([
                                        'user_id' => $user->id,
                                        'name' => $contact->name,
                                        'msisdn' => $contact->phone_number
                                    ]);
                                }
                            }
                        });
                    }
                }
            DB::commit();

            $imgId = null;

            //update image if image exist
            if (!empty($request['image_upload'])) {
                if ($request->file('image_upload')->isValid()) {
                    $current_filename = $request->file('image_upload')->getClientOriginalName();
                    $fileMimeType = $request->file('image_upload')->getMimeType();

                    $destinationPath = storage_path() . DIRECTORY_SEPARATOR . 'uploads' . DIRECTORY_SEPARATOR;
                    $fileName = $user->username . '_' . $current_filename;
                    $request->file('image_upload')->move($destinationPath, $fileName);
                    $full_path = $destinationPath . $fileName;
                    while (1) {
                        $imgId = uniqid();
                        if (empty(SmsImage::find($imgId))) {
                            break;
                        }
                    }
                    $user->sms_images()->create([
                        'path' => $full_path,
                        'file_name' => $current_filename,
                        'mime_type' => $fileMimeType,
                        'id' => $imgId
                    ]);
                } else {
                    return Redirect::back()->withInput()->withErrors(array('image_upload' => 'Sorry, The file upload failed!'));
                }
            }

            $new_msg_text = preg_replace(array('/\r\n/'), array("\n"), trim($request->get('message_content', '')));
            $msg = $new_msg_text;
            if (!empty($imgId)) {
                $sms_msg_url = route('sms_image', ['id' => $imgId]);
                $msg = $new_msg_text . "\n" . $sms_msg_url;
            }

            //store user input in the new session data
            session(['group_sms_personalised_data' => [
                'group_name' => $group_name,
                'sender_id' => $request->get('sender_id'),
                'groups' => $selected_groups,
                'schedule_date' => Carbon::parse($request->get('schedule_date')),
                'name' => $request->get('name'),
                'msg' => $msg,
                'recipients' => $counter,
                'selected_group' => $request->get('selected_group')
            ]]);

            $step = 2;
        }
        //process for step 2
        else if ($step == 2) {
            //check if next button was pressed
            if ($request->has('next')) {
                $new_msg_text = preg_replace(array('/\r\n/'), array("\n"), trim($request->get('message_content', '')));
                $message = $new_msg_text . session('group_sms_personalised_data')['msg'];
                if (empty($message)) {
                    $step = 2;
                    $request->session()->flash('error_msg', 'Kindly enter the text message!');
                } else {
                    //get data for step 2
                    $no_chars = strlen($message);
                    $no_pages = SmsTools::no_pages($no_chars);

                    // cost of sending one msg with this no_pages to one person
                    $nummsisdn = session('group_sms_personalised_data')['recipients'];
                    // no of recepients


                    $curr_bal = $credit->new_bal;

                    $recipients = $nummsisdn;

                    $credit_available = $curr_bal;

                    //store user input in the new session data
                    session(['group_sms_personalised_data' => [
                        'group_name' => session('group_sms_personalised_data')['group_name'],
                        'sender_id' => session('group_sms_personalised_data')['sender_id'],
                        'message_content' => $message,
                        //                        'price_per_sms' => $price_per_sms,
                        'recipients' => $recipients,
                        'total_price' => $no_pages,
                        'credit_available' => number_format($credit_available, 3),
                        'groups' => session('group_sms_personalised_data')['groups'],
                        'schedule_date' => session('group_sms_personalised_data')['schedule_date'],
                        'name' => session('group_sms_personalised_data')['name'],
                        'selected_group' => session('group_sms_personalised_data')['selected_group'],
                    ]]);
                    $step = 3;
                }
            }
            //in case back button was pressed
            else {
                //go back to step 1
                $step = 1;
            }
        }

        //process for step 2
        else if ($step == 3) {
            //check if next button was pressed
            if ($request->has('next')) {
                $highestRow = $user->tmp_group_sms()->count();
                //check if user can send sms
                if ($highestRow > 0) {
                    //do the calculation and move to step 3
                    //get data for step 2
                    $no_chars = strlen(session('group_sms_personalised_data')['message_content']);
                    $total_price = strlen(session('group_sms_personalised_data')['total_price']);
                    $price = 0.0;
                    foreach ($user->tmp_group_sms as $tempp) {
                        $network = SmsTools::get_msisdn_network($user, $tempp->msisdn);
                        $price += (float)$network['sms_price'];
                    }
                    $no_pages = SmsTools::no_pages($no_chars);

                    // cost of sending one msg with this no_pages to one person
                    $nummsisdn = $highestRow;
                    // no of recepients
                    $tot_cost = $total_price * $price;

                    $curr_bal = $credit->new_bal;
                    $credit_used = $credit->credit_used;

                    $recipients = $nummsisdn;
                    $credit_available = $curr_bal;

                    session(['group_sms_personalised_data' => [
                        'group_name' => session('group_sms_personalised_data')['group_name'],
                        'sender_id' => session('group_sms_personalised_data')['sender_id'],
                        'message_content' => session('group_sms_personalised_data')['message_content'],
                        'groups' => session('group_sms_personalised_data')['groups'],
                        //                        'price_per_sms' => $price_per_sms,
                        'recipients' => $recipients,
                        'total_price' => $tot_cost,
                        'credit_available' => number_format($credit_available, 3),
                        'schedule_date' => session('group_sms_personalised_data')['schedule_date'],
                        'name' => session('group_sms_personalised_data')['name'],
                        'selected_group' => session('group_sms_personalised_data')['selected_group'],
                    ]]);

                    //move to step 3
                    $step = 4;
                } else {
                    //prevent user from access step3
                    $request->session()->flash('error_msg', 'Kindly add some phone number(s)');
                    $step = 3;
                }
            } else if ($request->has('add_msisdn_btn')) {
                $input = $request->get('add_msisdn_input');
                if (empty(trim($input))) {
                    $request->session()->flash('error_msg', 'Kindly enter the msisdn to be added');
                }

                $tmp_msisdn_list = explode(',', $input);
                $added = 0;
                if (!empty($tmp_msisdn_list))
                    foreach ($tmp_msisdn_list as $temp) {
                        $temp = trim($temp);
                        if (!empty($temp)) {
                            if (!empty($user->tmp_group_sms()->where('msisdn', $temp)->first())) {
                                $request->session()->flash('error_msg', $temp . ' already exists in the list!');
                                break;
                            }
                            $user->tmp_group_sms()->create(['msisdn' => $temp]);
                            $added++;
                        }
                    }
                if ($added > 0)
                    $request->session()->flash('success_msg', $added . ' msisdn added to the list!');
                $step = 3;
            } else if ($request->has('delete_item')) {
                $input = $request->get('delete_item');
                $contact = $user->tmp_group_sms()->where('msisdn', $input)->first();
                if (!empty($contact)) {
                    $contact->delete();
                    $request->session()->flash('success_msg', $input . ' was deleted from the list!');
                } else {
                    $request->session()->flash('error_msg', $input . ' not found in the list!');
                }
                $step = 3;
            } else if ($request->has('delete_selection')) {
                $selection = $request->get('selection');
                $deleted = 0;
                if (!empty($selection))
                    foreach ($selection as $msisdn) {
                        $contact = $user->tmp_group_sms()->where('msisdn', $msisdn)->first();
                        if (!empty($contact)) {
                            $contact->delete();
                            $deleted++;
                        } else {
                            $request->session()->flash('error_msg', $msisdn . ' not found in the list!');
                        }
                    }
                if ($deleted > 0)
                    $request->session()->flash('success_msg', $deleted . ' msisdn deleted from the list!');
                $step = 3;
            }
            //in case back button was pressed
            else if ($request->has('back')) {
                //go back to step 1
                $step = 2;
            }
        } else if ($step == 4) {
            //check if next button was pressed
            if ($request->has('submit')) {
                $no_chars = strlen(session('group_sms_personalised_data')['message_content']);
                $sender = session('group_sms_personalised_data')['sender_id'];
                $nummsisdn = session('group_sms_personalised_data')['recipients'];
                $msgs = session('group_sms_personalised_data')['message_content'];
                $total_price = session('group_sms_personalised_data')['total_price'];
                $name = session('group_sms_personalised_data')['name'];
                $group_ids = implode(",", session('group_sms_personalised_data')['selected_group']);

                $no_pages = SmsTools::no_pages($no_chars);

                $tot_cost = $total_price;

                $curr_bal = $credit->new_bal;

                //remaining sms user can send

                if (isset(session('group_sms_personalised_data')['schedule_date']) && !empty(session('group_sms_personalised_data')['schedule_date'])) {
                    $sch_date = Carbon::parse(session('group_sms_personalised_data')['schedule_date']);
                    $now = Carbon::now()->addMinutes(1);
                    $date = $now->lte($sch_date) ? $sch_date : $now;
                } else {
                    $date = Carbon::now()->addMinutes(1);
                }

                if ($curr_bal >= $tot_cost) {
                    //copy msisdn to excel file and add it to the pending job list
                    $destinationPath = storage_path('bulk_sms');
                    $fileName = $user->username . '_' . date('YmdHis');

                    try {
                        $spreadsheet = new Spreadsheet();
                        $sheet = $spreadsheet->getActiveSheet();
                        $sheet->setTitle('GROUP SMS Details');

                        $i = 2;
                        $data = $user->tmp_group_sms()->get();

                        $sheet->setCellValue('A1', 'Number');
                        $sheet->setCellValue('B1', 'Name');
                        foreach ($data as $dat) {
                            $sheet->setCellValue("A$i", $dat->msisdn);
                            $sheet->setCellValue("B$i", empty($dat->name) ? '' : $dat->name);
                            $i++;
                        }

                        $writer = new Xlsx($spreadsheet);
                        $file_name = $fileName . '.xlsx';
                        $writer->save(storage_path("bulk_sms/$file_name"));

                        $user->tmp_group_sms()->delete();


                        //                        $res = Excel::create($fileName, function($excel) use (&$user) {
                        //                            // Set the title
                        //                            $excel->setTitle('GROUP SMS Details');
                        //                            // Chain the setters
                        //                            $excel->setCreator('Alphonse')->setCompany('Npontu');
                        //                            $excel->setDescription('Send Group SMS Details');
                        //
                        //                            $excel->sheet('Msisdn', function ($sheet) use (&$user) {
                        //                                $sheet->setOrientation('landscape');
                        //                                $i = 1;
                        //                                $data = $user->tmp_group_sms()->get();
                        //                                $sheet->appendRow($i, ['Number', 'Name']);
                        //                                foreach ($data as $dat) {
                        //                                    $i++;
                        //                                    $sheet->appendRow($i, [$dat->msisdn, empty($dat->name) ? '': $dat->name]);
                        //                                }
                        //                                $user->tmp_group_sms()->delete();
                        //                            });
                        //                        })->store('xls', $destinationPath, true);


                    } catch (\Exception $e) {
                        $request->session()->flash('error_msg', 'Sorry, an error occurred while scheduling the blast!');
                        \Illuminate\Support\Facades\Log::error($e->getMessage());
                        $step = 4;
                        return view('sms.send_personalised_group_sms', ['step' => $step]);
                    }
                    //Create a job
                    if (empty($sender)) {
                        return redirect()->route('app');
                    }

                    // $res['full'] = "/var/www/html/deywuro_messenger/storage/bulk_sms/$file_name";
                    $res['full'] = storage_path("bulk_sms/$file_name");

                    // Create a job
                    $status = 'pending';

                    UserJob::create([
                        'username' => $user->username,
                        'sender' => $sender,
                        'message' => $msgs,
                        'sms_count' => $no_pages,
                        'sched_datetime' => $date < Carbon::now() ? Carbon::now()->addMinutes(1) : $date,
                        //                        'type' => 'p_group',
                        'type' => 'p_bulk',
                        'status' => $status,
                        'created_by' => $user->username,
                        'file_path' => $res['full'],
                        'name' => $name,
                        'user_id' => $user->id,
                        'total_traffic' => $nummsisdn,
                        'group_ids' => $group_ids
                    ]);
                    @chmod($res['full'], 0777);

                    //update audit trails
                    $user->audit_trails()->create([
                        'username' => $user->username,
                        'date' => Carbon::now()->toDateTimeString(),
                        'activity' => $user->username . ' sent a personalised group sms to ' . $nummsisdn . ' msisdn'
                    ]);

                    //send blast alert
                    $alertThreshold = intval(env('BLAST_ALERT', 100));
                    if (intval($nummsisdn) >= $alertThreshold) {
                        SmsTools::sendBlastAlert($user, $nummsisdn);
                    }

                    $request->session()->flash('success', 'The contacts was successfully uploaded!');
                } else {
                    $request->session()->flash('error_msg', 'Sorry, you don\'t have enough credit to proceed!');
                }

                //reset session
                $step = 0;
                $request->session()->forget('group_sms_personalised_data');
                if (!$request->session()->has('success') || empty(session('success')))
                    $request->session()->flash('success', 'Your contacts was successfully uploaded!');
            }
            //in case back button was pressed
            else {
                //go back to step 2
                $step = 3;
            }
        }

        if ($step == 1) {
            //fetch user groups
            $groups = $request->user()->groups()->orderBy('name', 'asc')->get(['name', 'id']);
            return view('sms.send_personalised_group_sms', ['step' => $step, 'groups' => $groups]);
        } else if ($step == 3) {
            return $dataTable->render('sms.send_personalised_group_sms', ['step' => $step]);
        } else {
            return view('sms.send_personalised_group_sms', ['step' => $step]);
        }
    }

    public function get_image_for_image($id)
    {
        $img = SmsImage::findOrFail($id);
        $mime_type = $img->mime_type;
        ob_end_clean();
        $headers = array(
            'Content-Type: ' . $mime_type,
        );
        return Response::download($img->path, $img->file_name, $headers);
    }

    public static function send_sms($msisdn, $msgs)
    {
        $should_send_sms = true; // bug-fix

        if ($should_send_sms && !empty(trim($msisdn))) {
            $msisdn     = self::format_phone_number($msisdn);
            $senderId   = 'MESSENGER';
            $username   = 'aamalan';
            $password   = '123456';

            try {
                $client = new Client();
                $response = $client->request('GET', 'http://api.messenger.com/bulksms', [
                    'query' => [
                        'username' => $username,
                        'password' => $password,
                        'type' => '0',
                        'dlr' => '1',
                        'destination' => $msisdn,
                        'source' => $senderId,
                        'message' => $msgs
                    ]
                ]);
                //$body = $response->getBody();
            } catch (\Exception $e) {
            }
        }
    }

    public static function format_phone_number($phoneNumber)
    {
        $phoneNumber = trim($phoneNumber);
        if (strlen($phoneNumber) == 9 && !starts_with($phoneNumber, '0')) {
            return '233' . $phoneNumber;
        }
        if (strlen($phoneNumber) == 10 && starts_with($phoneNumber, '0')) {
            return '233' . substr($phoneNumber, 1);
        }
        return $phoneNumber;
    }
}