spy30/app/Http/Controllers/SMSController.php

<?php
namespace App\Http\Controllers;

use Illuminate\Http\Request;
use DB, Twitter;
use \App\PhoneNumber;

class SMSController extends Controller
{
  /**
   * Create a new controller instance.
   *
   * @return void
   */
  public function __construct()
  {
    $this->middleware('auth');
  }

  private function max_message_length($numbers) {
    $max_name_length = 0;
    foreach($numbers as $n) {
      if(strlen($n->name) > $max_name_length) {
        $max_name_length = strlen($n->name);
      }
    }
    return 160 - $max_name_length - 1;
  }

  public function index() {
    $this->authorize('admin');
    
    $numbers = PhoneNumber::orderBy('name')->get();
    $maxlen = $this->max_message_length($numbers);

    return view('sms', [
      'numbers' => $numbers,
      'maxlen' => $maxlen
    ]);
  }

  public function save(Request $request) {
    $this->authorize('admin');

    if(preg_match_all('/(.+)\s+([0-9\-]+)/', $request->input('input'), $matches)) {

      $contacts = [];
      $errors = [];
      foreach($matches[1] as $i=>$name) {
        if(preg_match('/^1?(\d{3})-?(\d{3})-?(\d{4})$/', $matches[2][$i], $pm)) {
          $contacts[] = [trim($name), $pm[1].'-'.$pm[2].'-'.$pm[3]];
        } else {
          $errors[] = $matches[0][$i];
        }
      }

      if(count($errors)) {
      $request->session()->flash('status', 'danger');
      $request->session()->flash('status-message', 'There was a problem with some of your entries. No numbers were changed. The lines below had errors:<br>'.implode('<br>', array_map('htmlspecialchars', $errors)));

      } else {
        DB::table('phone_numbers')->delete();
        foreach($contacts as $c) {
          $p = new PhoneNumber;
          $p->name = $c[0];
          $p->phone = $c[1];
          $p->save();
        }

        $request->session()->flash('status', 'success');
        $request->session()->flash('status-message', 'Phone numbers saved!');
      }


    } else {
      $request->session()->flash('status', 'danger');
      $request->session()->flash('status-message', 'Invalid input, phone numbers were not modified');
    }

    return redirect('sms');
  }

  public function send(Request $request) {
    $this->authorize('admin');
    
    $numbers = PhoneNumber::orderBy('name')->get();
    $maxlen = $this->max_message_length($numbers);

    if(strlen($request->input('text')) <= $maxlen) {

      $client = new \Twilio\Rest\Client(env('TWILIO_SID'), env('TWILIO_TOKEN'));
      foreach($numbers as $number) {
        $text = $request->input('text');
        $text = str_replace('{name}', $number->name, $text);
        $message = $client->messages->create(
          '+1'.str_replace('-','',$number->phone),
          array(
            'from' => env('TWILIO_NUMBER'),
            'body' => $text
          )
        );
      }

      $request->session()->flash('status', 'success');
      $request->session()->flash('status-message', 'Message was sent! It will take about 1 second per number to deliver all the messages!');
    } else {
      $request->session()->flash('status', 'danger');
      $request->session()->flash('status-message', 'Your message was too long!');
    }

    return redirect('sms');
  }

}