diff --git a/app/Console/Commands/CostCommand.php b/app/Console/Commands/CostCommand.php
index 99a9db5..1e05de4 100644
--- a/app/Console/Commands/CostCommand.php
+++ b/app/Console/Commands/CostCommand.php
@@ -2,135 +2,160 @@
 
 namespace App\Console\Commands;
 
-use DB;
+use Throwable;
+use Carbon\Carbon;
+use App\Models\Cost;
 use App\Models\Business;
 use Illuminate\Console\Command;
+use Morilog\Jalali\CalendarUtils;
+use Illuminate\Support\Facades\DB;
 use Illuminate\Support\Facades\Cache;
+use Illuminate\Support\Facades\Storage;
 
 class CostCommand extends Command
 {
-    public const USER_FEE = 400;
-
-    public const FILE_FEE = [
-        200 => 0,
-        400 => 1000,
-        800 => 2000,
-    ];
-
     protected $signature = 'cost:work';
 
     protected $description = 'Run the cost worker';
 
-    public function __construct()
-    {
-        parent::__construct();
-    }
-
     public function handle()
     {
-        // infinte loop
         while (true) {
-            // to baghali ha
-            $recorded_month = jdate($business->calculated_at)->format("Y-m-01");
-
-            $calculated_at = Cache::get('calculated_at');
-            if ($calculated_at === null) {
-                $business = Business::orderBy('calculated_at')->first()->load('users', 'cost');
-                $calculated_at = $business->calculated_at;
-                $until_now = jdate()->getMonth() > jdate($business->calculated_at)->getMonth()
-                    ? jdate($business->calculated_at)->toCarbon()->setTime("00", "00", "00")
-                    : \Carbon\Carbon::now();
-
-                Cache::put('calculated_at', $until_now, 60);
+            $lock = Cache::get('lock', false);
+            if ($lock) {
+                $this->info('There is no business for auditing.');
+                continue;
+            }
+
+            $business = Business::orderBy('calculated_at')->first();
+            if ($business === null) {
+                continue;
+            }
+
+            if ($business->calculated_at->isFuture()) {
+                continue;
+            }
+
+            $next_month = jdate($business->calculated_at)->addMonths();
+            [$year, $month, $day] = CalendarUtils::toGregorian(
+                $next_month->getYear(), $next_month->getMonth(), 1
+            );
+            $now = Carbon::createFromDate($year, $month, $day);
+            $now->setTime(0, 0, 0);
+
+            if ($now->isFuture()) {
+                $now = Carbon::now();
             }
 
             // if calculated_at less than an hour stop
-            if (\Carbon\Carbon::now()->diffInMinutes($until_now) <= 60) {
-                $this->info('nothing to cost');
+            if ($now->diffInMinutes($business->calculated_at) <= 59) {
+                $this->info('Must be one hour after the last audit.');
+                Cache::put('lock', true, $now->diffInSeconds($business->calculated_at));
                 continue;
             }
 
             try {
                 DB::beginTransaction();
+                // Fixed amounts of expenses
+                $business->load('users', 'files');
 
-                // business order by last_calculated_at take first
-                if (!isset($business)) {
-                    $business = Business::orderBy('calculated_at')->first()->load('users', 'cost');
-                }
-
-                $user_fee = enum('business.fee.user');
-
-                // get business  employee
-                $users_cost = $business->cost
-                    ->where('type', '=', 'users')
-                    ->where('fee', '=', $user_fee)
-                    ->where('month', '=', $recorded_month)
-                    ->where('amount', '=', $business->users->count())
-                    ->first();
-
-                if ($users_cost === null) {
-                    $business->cost()->create([
-                        'type' => 'users',
-                        'month' => $recorded_month,
-                        'amount' => $business->users->count(),
-                        'fee' => $user_fee,
-                        'duration' => $duration =  $until_now->diffInSeconds($calculated_at), // from the created_at time of the newset fifth user
-                        'additional' => $business->users->pluck('id')->toArray(),
-                    ]);
-                } else {
-                    $users_cost->update([
-                        'duration' => $duration = $until_now->diffInMinutes($calculated_at), // last calc - (current month - now else last calc - end of the past month),
-                        'additional' => $business->users->pluck('id')->toArray(),
-                    ]);
-                }
-
-                $costs = $user_fee * $duration;
-
-                // do the math in php
-                if (intdiv($business->files_volume, 200) === 0) {
-                    $pads = 0;
-                } else {
-                    $pads = intdiv($business->files_volume, 200) - 1;
-                }
-
-                $file_fee = enum('business.fee.file');
-
-                $files = $business->cost
-                    ->where('type', '=', 'files')
-                    ->where('fee', '=', $file_fee)
-                    ->where('month', '=', $recorded_month)
-                    ->where('amount', '=', $business->files_volume)
-                    ->first();
-
-                if ($files === null) {
-                    $business->cost()->create([
-                        'type' => 'files',
-                        'month' => $recorded_month,
-                        'amount' => $pads,
-                        'fee' => $file_fee,
-                        'duration' => $duration = $until_now->diffInMinutes($calculated_at), // how to determine the file?,
-                    ]);
-                } else {
-                    $files->update([
-                        'duration' => $duration = $until_now->diffInMinutes($calculated_at), // last calc - (current month - now else last calc - end of the past month),,
-                    ]);
-                }
-
-                $costs += $file_fee * $duration;
+                $costs = 0;
+                $costs += $this->calculateCostOfBusinessUsers($business, $now);
+                $costs += $this->calculateCostOfBusinessFiles($business, $now);
 
                 // increment and decrement of wallet in php
                 // deduct costs from your business wallet
                 // make sure save the calculated_at
                 $business->update([
                     'wallet' => $business->wallet - $costs,
-                    'calculated_at' => \Carbon\Carbon::now(),
+                    'calculated_at' => $now,
                 ]);
+
                 DB::commit();
-            } catch (Throwable $thr) {
+                $this->info("The business #{$business->id} was audited.");
+            } catch (Throwable $throwable) {
+                throw $throwable;
                 DB::rollback();
-                throw $thr;
+                report($throwable);
                 continue;
             }
         }
     }
+
+    public function calculateCostOfBusinessUsers($business, $now)
+    {
+        $user_fee = enum('business.fee.user');
+        $recorded_month = jdate($business->calculated_at)->format("Y-m-01");
+
+        if ($business->users->isEmpty()) {
+            return 0;
+        }
+
+        // get business employee
+        $users_cost = $business->cost
+            ->where('type', '=', Cost::USER_TYPE)
+            ->where('fee', '=', $user_fee)
+            ->where('month', '=', $recorded_month)
+            ->where('amount', '=', $business->users->count())
+            ->first();
+
+        if ($users_cost === null) {
+            $business->cost()->create([
+                'type' => Cost::USER_TYPE,
+                'month' => $recorded_month,
+                'amount' => $business->users->count(),
+                'fee' => $user_fee,
+                'duration' => $duration = $now->diffInMinutes($business->calculated_at), // from the created_at time of the newset fifth user
+                'additional' => $business->users->pluck('id')->toArray(),
+            ]);
+        } else {
+            $users_cost->update([
+                'duration' => $duration = $now->diffInMinutes($business->calculated_at) + $users_cost->duration, // last calc - (current month - now else last calc - end of the past month),
+                'additional' => $business->users->pluck('id')->toArray(),
+            ]);
+        }
+
+        return $user_fee * $duration;
+    }
+
+    public function calculateCostOfBusinessFiles($business, $now)
+    {
+        $file_fee = enum('business.fee.file');
+        $calculated_at = $business->calculated_at;
+        $recorded_month = jdate($business->calculated_at)->format("Y-m-01");
+
+
+        // do the math in php
+        $packs = intdiv($business->files_volume, 200);
+        if ($packs === 0) {
+            return 0;
+        } else {
+            $packs--;
+        }
+
+        $files = $business->cost
+            ->where('type', '=', Cost::FILE_TYPE)
+            ->where('fee', '=', $file_fee)
+            ->where('month', '=', $recorded_month)
+            ->where('amount', '=', $packs)
+            ->first();
+
+        if ($files === null) {
+            $business->cost()->create([
+                'type' => Cost::FILE_TYPE,
+                'month' => $recorded_month,
+                'amount' => $packs,
+                'fee' => $file_fee,
+                'duration' => $duration = $now->diffInMinutes($calculated_at), // how to determine the file?,
+                'additional' => ['volume' => $business->files_volume],
+            ]);
+        } else {
+            $files->update([
+                'duration' => $duration = $now->diffInMinutes($calculated_at) + $files->duration, // last calc - (current month - now else last calc - end of the past month),,
+                'additional' => ['volume' => $business->files_volume],
+            ]);
+        }
+
+        return $file_fee * $duration;
+    }
 }
diff --git a/app/Http/Controllers/AuthController.php b/app/Http/Controllers/AuthController.php
index 7e9a193..55fe6f7 100644
--- a/app/Http/Controllers/AuthController.php
+++ b/app/Http/Controllers/AuthController.php
@@ -13,7 +13,6 @@ use App\Http\Resources\UserResource;
 use Illuminate\Support\Facades\Auth;
 use Illuminate\Support\Facades\Hash;
 use Illuminate\Support\Facades\Cache;
-use Laravel\Lumen\Routing\Controller;
 use Laravel\Socialite\Facades\Socialite;
 use Illuminate\Session\TokenMismatchException;
 use Symfony\Component\HttpFoundation\Response;
diff --git a/app/Http/Controllers/FileController.php b/app/Http/Controllers/FileController.php
index 63816f6..23b30ca 100644
--- a/app/Http/Controllers/FileController.php
+++ b/app/Http/Controllers/FileController.php
@@ -4,13 +4,13 @@ namespace App\Http\Controllers;
 
 use App\Models\File;
 use App\Models\Project;
-use App\Rules\maxBound;
+use App\Rules\MaxBound;
 use App\Models\Business;
 use Illuminate\Support\Str;
 use Illuminate\Http\Request;
 use Illuminate\Http\UploadedFile;
+use App\Http\Resources\FileResource;
 use Illuminate\Support\Facades\Auth;
-use App\HiLib\Resources\FileResource;
 use Spatie\QueryBuilder\QueryBuilder;
 use Spatie\QueryBuilder\AllowedFilter;
 use Illuminate\Support\Facades\Storage;
@@ -102,7 +102,7 @@ class FileController extends Controller
         $business = Business::findOrFail($business);
         $project = Project::findOrFail($project);
 
-        // $this->validate($request, ['file' => 'required|file',]);
+        $this->validate($request, ['file' => 'required|file',]);
 
         $file = $request->file('file');
         $file_extension = $file->getClientOriginalExtension();
@@ -127,6 +127,10 @@ class FileController extends Controller
             'description' => $request->description
         ]);
 
+        $business->update([
+            'files_volume' => $business->files_volume + $file_record->size
+        ]);
+
         return new FileResource($file_record);
     }
 
diff --git a/app/Http/Controllers/ProjectController.php b/app/Http/Controllers/ProjectController.php
index 4a396ef..00a20cb 100644
--- a/app/Http/Controllers/ProjectController.php
+++ b/app/Http/Controllers/ProjectController.php
@@ -22,7 +22,7 @@ class ProjectController extends Controller
         return Business::info($request->route('business'), true);
     }
 
-    public function update(Request $request,string $project)
+    public function update(Request $request, int $business, string $project)
     {
         permit('projectEdit', ['project_id' => $project]);
         $project = Project::findOrFail($project);
@@ -31,7 +31,7 @@ class ProjectController extends Controller
     }
 
 
-    public function delete(Request $request, string $project)
+    public function delete(Request $request, int $business, string $project)
     {
         permit('businessProjects');
         $project = Project::findOrFail($project);
@@ -39,7 +39,7 @@ class ProjectController extends Controller
         return Business::info($request->route('business'));
     }
 
-    public function restore(Request $request, string $project)
+    public function restore(Request $request, int $business, string $project)
     {
         $project = Project::onlyTrashed()->findOrFail($project);
         $project->restore();
@@ -139,7 +139,7 @@ class ProjectController extends Controller
         }
     }
 
-    public function setAvatar(Request $request, string $project)
+    public function setAvatar(Request $request, int $business, string $project)
     {
         $project = Project::findOrFail($project);
         if ($request->hasFile('avatar')) {
@@ -149,7 +149,7 @@ class ProjectController extends Controller
         return $project;
     }
 
-    public function unSetAvatar(Request $request, string $project)
+    public function unSetAvatar(Request $request,int $business ,string $project)
     {
         $project = Project::findOrFail($project);
         $project->deleteAvatar();
diff --git a/app/Http/Controllers/TaskFileController.php b/app/Http/Controllers/TaskFileController.php
index 6750715..b8bd77c 100644
--- a/app/Http/Controllers/TaskFileController.php
+++ b/app/Http/Controllers/TaskFileController.php
@@ -11,7 +11,6 @@ use Illuminate\Http\Request;
 use App\Http\Controllers\Controller;
 use App\Http\Resources\FileResource;
 use Symfony\Component\HttpFoundation\Response;
-use Illuminate\Http\Exceptions\HttpResponseException;
 
 class TaskFileController extends Controller
 {
@@ -41,7 +40,7 @@ class TaskFileController extends Controller
         // guest or de active
         // return files as file resource
         [$business, $project, $task] = $this->checkBelonging($business, $project, $task);
-        return FileResource::collection($task->files);
+        return FileResource::collection($task->files ?? []);
     }
 
     public function sync(Request $request,int $business, int $project, int $task)
@@ -78,7 +77,7 @@ class TaskFileController extends Controller
         // return the file resource or stream it
         [$business, $project, $task] = $this->checkBelonging($business, $project, $task);
 
-        $file = File::find($file);
+        $file = File::findOrFail($file);
         if ($file->user_id !== Auth::id()) {
             abort(Response::HTTP_UNAUTHORIZED);
         }
diff --git a/app/Http/Resources/FileResource.php b/app/Http/Resources/FileResource.php
index 3b74fb0..bc99db1 100644
--- a/app/Http/Resources/FileResource.php
+++ b/app/Http/Resources/FileResource.php
@@ -1,9 +1,7 @@
 <?php
 
-
 namespace App\Http\Resources;
 
-
 use Illuminate\Http\Resources\Json\JsonResource;
 
 class FileResource extends JsonResource
diff --git a/app/Models/Business.php b/app/Models/Business.php
index eaab90f..dc03aef 100644
--- a/app/Models/Business.php
+++ b/app/Models/Business.php
@@ -42,6 +42,7 @@ class Business extends Model implements HasMedia
 
     protected $casts = [
         'has_avatar' => 'boolean',
+        'calculated_at' => 'datetime',
     ];
 
     public function getValueOf(?string $key)
diff --git a/app/Models/Cost.php b/app/Models/Cost.php
index fa06239..98b2e63 100644
--- a/app/Models/Cost.php
+++ b/app/Models/Cost.php
@@ -6,6 +6,10 @@ use App\Models\Model;
 
 class Cost extends Model
 {
+    public const USER_TYPE = 'users';
+
+    public const FILE_TYPE = 'files';
+
     public $perPage = 12;
 
     protected $fillable = [
diff --git a/app/Models/Model.php b/app/Models/Model.php
index c68422f..b2f1373 100644
--- a/app/Models/Model.php
+++ b/app/Models/Model.php
@@ -2,11 +2,7 @@
 
 namespace App\Models;
 
-use Anik\Amqp\Exchange;
-use Anik\Amqp\Facades\Amqp;
 use App\Events\ModelSaved;
-use PhpAmqpLib\Wire\AMQPTable;
-use Anik\Amqp\PublishableMessage;
 use Illuminate\Http\JsonResponse;
 use Illuminate\Support\Facades\DB;
 use Illuminate\Support\Facades\Auth;
diff --git a/app/Providers/AuthServiceProvider.php b/app/Providers/AuthServiceProvider.php
index c02d1b6..69ff803 100644
--- a/app/Providers/AuthServiceProvider.php
+++ b/app/Providers/AuthServiceProvider.php
@@ -40,7 +40,7 @@ class AuthServiceProvider extends ServiceProvider
                 'token' => $request->bearerToken(),
                 'agent' => $request->getAgent(),
                 'os' => $request->getOS(),
-            ])->first();
+            ])->firstOrFail();
 
             return $fingerprint->user->setAttribute('token', $fingerprint->token);
         });
diff --git a/composer.json b/composer.json
index ca1dcad..6c87a76 100644
--- a/composer.json
+++ b/composer.json
@@ -20,11 +20,8 @@
         "jenssegers/agent": "^2.6",
         "laravel/socialite": "^5.1",
         "laravel/framework": "^8.12",
-        "guzzlehttp/guzzle": "^7.0.1",
         "laravel/legacy-factories": "^1",
         "fruitcake/laravel-cors": "^2.0",
-        "laravel/lumen-framework": "^8.0",
-        "illuminate/notifications": "^8.0",
         "league/flysystem-aws-s3-v3": "~1.0",
         "spatie/laravel-medialibrary": "^9.0",
         "spatie/laravel-query-builder": "^3.3",
diff --git a/config/app.php b/config/app.php
index cc438b2..d517cdc 100644
--- a/config/app.php
+++ b/config/app.php
@@ -12,7 +12,7 @@ return [
 
     'asset_url' => env('ASSET_URL', null),
 
-    'timezone' => 'UTC',
+    'timezone' => 'Asia/Tehran',
 
     'locale' => 'fa',
 
@@ -64,6 +64,7 @@ return [
         App\Providers\BroadcastServiceProvider::class,
         App\Providers\EventServiceProvider::class,
         App\Providers\RouteServiceProvider::class,
+        App\Utilities\Zarinpal\Laravel\ZarinpalServiceProvider::class,
     ],
 
     'aliases' => [
@@ -104,5 +105,7 @@ return [
         'URL' => Illuminate\Support\Facades\URL::class,
         'Validator' => Illuminate\Support\Facades\Validator::class,
         'View' => Illuminate\Support\Facades\View::class,
+
+        'View' => App\Utilities\Zarinpal\Laravel\Facade\Zarinpal::class,
     ],
 ];
diff --git a/database/factories/BusinessFactory.php b/database/factories/BusinessFactory.php
index f8dab3d..28f0dae 100644
--- a/database/factories/BusinessFactory.php
+++ b/database/factories/BusinessFactory.php
@@ -12,6 +12,6 @@ $factory->define(Business::class, function (Faker $faker) {
         'slug' => Str::slug($name) . $faker->numberBetween(1, 100),
         'wallet' => random_int(111111, 999999),
         'color' => $faker->colorName,
-        'calculated_at' => \Carbon\Carbon::now()->subMinutes(random_int(1, 1000)),
+        'calculated_at' => \Carbon\Carbon::now()->subDays(random_int(1, 31)),
     ];
 });
diff --git a/database/migrations/2020_08_18_085017_fingerprints.php b/database/migrations/2020_08_18_085017_fingerprints.php
index 67bd1ee..af506ec 100644
--- a/database/migrations/2020_08_18_085017_fingerprints.php
+++ b/database/migrations/2020_08_18_085017_fingerprints.php
@@ -19,8 +19,8 @@ class Fingerprints extends Migration
             $table->string('agent');
             $table->ipAddress('ip');
             $table->string('os');
-            $table->decimal('latitude', 10, 2);
-            $table->decimal('longitude', 11, 2);
+            $table->decimal('latitude', 10, 4);
+            $table->decimal('longitude', 11, 4);
             $table->char('token', 60)->unique();
             $table->timestamps();
         });
diff --git a/database/migrations/2020_08_18_085018_create_businesses_table.php b/database/migrations/2020_08_18_085018_create_businesses_table.php
index e37d713..b0d168f 100644
--- a/database/migrations/2020_08_18_085018_create_businesses_table.php
+++ b/database/migrations/2020_08_18_085018_create_businesses_table.php
@@ -23,7 +23,7 @@ class CreateBusinessesTable extends Migration
             $table->string('description')->nullable();
             $table->json('cache')->nullable();
             $table->boolean('has_avatar')->default(false);
-            $table->timestamp('calculated_at')->nullable();
+            $table->timestamp('calculated_at')->nullable()->index();
             $table->timestamp('created_at')->nullable();
             $table->timestamp('updated_at')->nullable();
             $table->timestamp('deleted_at')->nullable();