Tasks Module Stage 2: Subtasks

- Create task_subtasks table migration
- Create TaskSubtaskModel with CRUD operations
- Add subtask API methods: addSubtask, toggleSubtask, deleteSubtask
- Update TaskService to include subtasks in getTask()
- Add Routes for subtasks API
- Update show.twig with subtasks UI and JavaScript

app/Modules/Tasks/Services/TaskService.php

@@ -5,6 +5,7 @@ namespace App\Modules\Tasks\Services;
 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 CodeIgniter\Events\Events;
 
 class TaskService
@@ -12,12 +13,14 @@ class TaskService
     protected TaskModel $taskModel;
     protected TaskAssigneeModel $assigneeModel;
     protected TaskColumnModel $columnModel;
+    protected TaskSubtaskModel $subtaskModel;
 
     public function __construct()
     {
         $this->taskModel = new TaskModel();
         $this->assigneeModel = new TaskAssigneeModel();
         $this->columnModel = new TaskColumnModel();
+        $this->subtaskModel = new TaskSubtaskModel();
     }
 
     /**
@@ -174,6 +177,9 @@ class TaskService
         }
 
         $task['assignees'] = $this->assigneeModel->getAssigneesByTask($taskId);
+        $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']));
 
         return $task;
     }
@@ -264,4 +270,83 @@ class TaskService
 
         return $columns[0]['id'] ?? 1;
     }
+
+    // ========== Подзадачи (Subtasks) ==========
+
+    /**
+     * Добавить подзадачу
+     */
+    public function addSubtask(int $taskId, string $title, int $userId): int
+    {
+        $orderIndex = $this->subtaskModel->getNextOrder($taskId);
+
+        $subtaskId = $this->subtaskModel->insert([
+            'task_id' => $taskId,
+            'title' => trim($title),
+            'order_index' => $orderIndex,
+        ]);
+
+        if ($subtaskId) {
+            Events::trigger('task.subtask_created', $taskId, $subtaskId, $userId);
+        }
+
+        return $subtaskId;
+    }
+
+    /**
+     * Переключить статус подзадачи
+     */
+    public function toggleSubtask(int $taskId, int $subtaskId, int $userId): bool
+    {
+        $subtask = $this->subtaskModel->find($subtaskId);
+        if (!$subtask || $subtask['task_id'] != $taskId) {
+            return false;
+        }
+
+        $result = $this->subtaskModel->toggle($subtaskId);
+
+        if ($result) {
+            Events::trigger('task.subtask_toggled', $taskId, $subtaskId, !$subtask['is_completed'], $userId);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Удалить подзадачу
+     */
+    public function deleteSubtask(int $taskId, int $subtaskId, int $userId): bool
+    {
+        $subtask = $this->subtaskModel->find($subtaskId);
+        if (!$subtask || $subtask['task_id'] != $taskId) {
+            return false;
+        }
+
+        $result = $this->subtaskModel->delete($subtaskId);
+
+        if ($result) {
+            Events::trigger('task.subtask_deleted', $taskId, $subtaskId, $userId);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Обновить подзадачу
+     */
+    public function updateSubtask(int $taskId, int $subtaskId, array $data, int $userId): bool
+    {
+        $subtask = $this->subtaskModel->find($subtaskId);
+        if (!$subtask || $subtask['task_id'] != $taskId) {
+            return false;
+        }
+
+        $result = $this->subtaskModel->update($subtaskId, $data);
+
+        if ($result) {
+            Events::trigger('task.subtask_updated', $taskId, $subtaskId, $data, $userId);
+        }
+
+        return $result;
+    }
 }