Refactor: Create shared AttachmentService and AttachmentModel

- Created common AttachmentService for all modules (app/Services/)
- Created common AttachmentModel (app/Models/)
- Created common migration (app/Database/Migrations/)
- Updated Tasks module to use shared AttachmentService
- Added Twig functions: format_filesize(), get_file_icon()
- Removed duplicate TaskAttachmentModel and task_attachments migration
- AttachmentService can be used by any module: task, deal, contact, etc.

app/Modules/Tasks/Services/TaskService.php

@@ -6,7 +6,7 @@ use App\Modules\Tasks\Models\TaskModel;
 use App\Modules\Tasks\Models\TaskAssigneeModel;
 use App\Modules\Tasks\Models\TaskColumnModel;
 use App\Modules\Tasks\Models\TaskSubtaskModel;
-use App\Modules\Tasks\Models\TaskAttachmentModel;
+use App\Services\AttachmentService;
 use CodeIgniter\Events\Events;
 
 class TaskService
@@ -15,7 +15,7 @@ class TaskService
     protected TaskAssigneeModel $assigneeModel;
     protected TaskColumnModel $columnModel;
     protected TaskSubtaskModel $subtaskModel;
-    protected TaskAttachmentModel $attachmentModel;
+    protected AttachmentService $attachmentService;
 
     public function __construct()
     {
@@ -23,7 +23,7 @@ class TaskService
         $this->assigneeModel = new TaskAssigneeModel();
         $this->columnModel = new TaskColumnModel();
         $this->subtaskModel = new TaskSubtaskModel();
-        $this->attachmentModel = new TaskAttachmentModel();
+        $this->attachmentService = new AttachmentService();
     }
 
     /**
@@ -183,8 +183,8 @@ class TaskService
         $task['subtasks'] = $this->subtaskModel->getByTask($taskId);
         $task['subtasks_count'] = count($task['subtasks']);
         $task['subtasks_completed'] = count(array_filter($task['subtasks'], fn($s) => $s['is_completed']));
-        $task['attachments'] = $this->attachmentModel->getByTask($taskId);
-        $task['attachments_count'] = count($task['attachments']);
+        $task['attachments'] = $this->attachmentService->getByEntity('task', $taskId);
+        $task['attachments_count'] = $this->attachmentService->count('task', $taskId);
 
         return $task;
     }
@@ -355,45 +355,14 @@ class TaskService
         return $result;
     }
 
-    // ========== Вложения (Attachments) ==========
+    // ========== Вложения (Attachments) - используем общий AttachmentService ==========
 
     /**
      * Загрузить вложение
      */
     public function uploadAttachment(int $taskId, array $file, int $userId): ?int
     {
-        $uploadPath = WRITEPATH . 'uploads/tasks/' . $taskId . '/';
-        
-        // Создаём директорию если не существует
-        if (!is_dir($uploadPath)) {
-            mkdir($uploadPath, 0755, true);
-        }
-
-        // Генерируем уникальное имя файла
-        $originalName = $file['name'];
-        $extension = pathinfo($originalName, PATHINFO_EXTENSION);
-        $newFileName = uniqid() . '_' . time() . '.' . $extension;
-        $filePath = $uploadPath . $newFileName;
-
-        // Перемещаем загруженный файл
-        if (!move_uploaded_file($file['tmp_name'], $filePath)) {
-            return null;
-        }
-
-        $attachmentId = $this->attachmentModel->insert([
-            'task_id' => $taskId,
-            'file_name' => $originalName,
-            'file_path' => $filePath,
-            'file_size' => $file['size'],
-            'file_type' => $file['type'] ?? '',
-            'uploaded_by' => $userId,
-        ]);
-
-        if ($attachmentId) {
-            Events::trigger('task.attachment_uploaded', $taskId, $attachmentId, $userId);
-        }
-
-        return $attachmentId;
+        return $this->attachmentService->upload('task', $taskId, $file, $userId);
     }
 
     /**
@@ -401,17 +370,6 @@ class TaskService
      */
     public function deleteAttachment(int $taskId, int $attachmentId, int $userId): bool
     {
-        $attachment = $this->attachmentModel->find($attachmentId);
-        if (!$attachment || $attachment['task_id'] != $taskId) {
-            return false;
-        }
-
-        $result = $this->attachmentModel->deleteAttachment($attachmentId, $userId);
-
-        if ($result) {
-            Events::trigger('task.attachment_deleted', $taskId, $attachmentId, $userId);
-        }
-
-        return $result;
+        return $this->attachmentService->delete('task', $taskId, $attachmentId, $userId);
     }
 }