public function getMain() {
        $query_string = Input::all();
        if(isset($query_string['login'])) {
            if(!Auth::user())
            {
                $data = [
                    'title' => 'Login Page',
                    'subtitle' => 'Login Page'
                ];

                return view('index.login', $data);
            } else {
                return redirect('/');
            }
        }
        if(isset($query_string['logout'])) {
            Auth::logout();
            return redirect('/');
        }
        if(isset($query_string['auth'])) {
            if (Auth::attempt(['email' => $data['email'], 'password' => $data['password']]))
            {
                $user = Auth::user();
                if ($user->is_admin == 1) {
                    return redirect('/');
                } else {
                    return redirect('/?login');
                }
            } else {
                return redirect('/?login');
            }
        }
        if(isset($query_string['promo_string'])) {
            $s = Promo::find(1);
            $data = [
                'code' => 200,
                'body' => [
                    'data' => ['promo_string' => $s->promo_string],
                    'message' => 'Success'
                ]
            ];
            return response()->json($data, 200);
        }
        if(isset($query_string['promo_text'])) {
            $s = Promo::find(1);
            $data = [
                'code' => 200,
                'body' => [
                    'data' => ['promo_string' => $s->promo_text],
                    'message' => 'Success'
                ]
            ];
            return response()->json($data,200);
        }
        if(isset($query_string['createAdmin'])) {
            $admin_exists = 0;
            $users = User::all();
            foreach ($users as $user) {
                if ($user->is_admin == 1) $admin_exists = 1;
            }
            if ($admin_exists == 0) {
                $name = 'admin';
                $email = 'a@a.ru';
                $password = Hash::make('asryfuee^W!@#SAJRrqw');
                User::create(['name' => $name, 'email' => $email, 'password' => $password, 'is_admin' => 1]);
                return 'Admin created';
            } else {
                return 'Admin already exist';
            }
        }
        if(count($query_string) == 0) {
            if(!Auth::user()) {
                return redirect('/?login');
            } else {
                if (Promo::all()->count() == 0) {
                    Promo::create(['promo_string' => 'test', 'promo_text' => 'test_text']);
                    return redirect('/');
                } else {
                    $data['promo'] = Promo::find(1);
                    return view('index.main', $data);
                }
            }
        } else {
            if(isset($_POST['email']) && isset($_POST['pass'])) {
                $data = $_POST;
                if (Auth::attempt(['email' => $data['email'], 'password' => $data['pass']]))
                {
                    $user = Auth::user();
                    if ($user->is_admin == 1) {
                        $data = [
                            'code' => 200,
                            'body' => [
                                'data' => ['user' => $user],
                                'message' => 'Success admin login'
                            ]
                        ];
                        return response()->json($data, 200);
                    } else {
                        $data = [
                            'code' => 400,
                            'body' => [
                                'data' => ['user' => $user],
                                'message' => 'User is not admin'
                            ]
                        ];
                        return response()->json($data, 200);
                    }
                } else {
                    $data = [
                        'code' => 400,
                        'body' => [
                            'data' => $_POST,
                            'message' => 'Auth error'
                        ]
                    ];
                    return response()->json($data, 200);
                }
            }
            if(isset($_POST['change'])) {
                switch($_POST['change']) {
                    case 'promo_string':
                        $ps = $_POST['ps'];
                        $s = Promo::find(1);
                        $s->promo_string = $ps;
                        $s->save();
                        $data = [
                            'code' => 200,
                            'body' => [
                                'data' => ['promo_string' => $s->promo_string],
                                'message' => 'Success promo string update'
                            ]
                        ];
                        return response()->json($data, 200);
                        break;
                    case 'promo_text':
                        $pt = $_POST['pt'];
                        $t = Promo::find(1);
                        $t->promo_text = $pt;
                        $t->save();
                        $data = [
                            'code' => 200,
                            'body' => [
                                'data' => ['promo_text' => $t->promo_text],
                                'message' => 'Success promo text update'
                            ]
                        ];
                        return response()->json($data, 200);
                        break;
                }
            }
        }
    }