Tasks Module Stage 3: Attachments

- Add migration for task_attachments table
- Create TaskAttachmentModel with file handling methods
- Add TaskService methods for upload/delete attachments
- Add API routes for attachments (upload, delete, download)
- Add controller methods for attachment operations
- Add UI section in task view with file upload form
- Add JavaScript handlers for AJAX file operations

app/Modules/Tasks/Views/tasks/show.twig

@@ -140,6 +140,53 @@
             </div>
         </div>
 
+        {# Вложения #}
+        <div class="card border-0 shadow-sm mb-4">
+            <div class="card-header bg-light d-flex justify-content-between align-items-center">
+                <h5 class="mb-0">
+                    <i class="fa-solid fa-paperclip me-2"></i>Вложения
+                    {% if task.attachments_count %}
+                        <span class="badge bg-secondary ms-2">{{ task.attachments_count }}</span>
+                    {% endif %}
+                </h5>
+            </div>
+            <div class="card-body">
+                {% if task.attachments %}
+                    <ul class="list-group list-group-flush mb-3" id="attachments-list">
+                        {% for attachment in task.attachments %}
+                            <li class="list-group-item d-flex align-items-center gap-2" data-attachment-id="{{ attachment.id }}">
+                                <i class="fa-solid fa-file text-muted"></i>
+                                <a href="{{ base_url('/tasks/' ~ task.id ~ '/attachments/' ~ attachment.id ~ '/download') }}" 
+                                   target="_blank" class="flex-grow-1 text-decoration-none">
+                                    {{ attachment.file_name }}
+                                </a>
+                                <small class="text-muted">
+                                    {{ attachment.file_size|filesize }}
+                                </small>
+                                <button type="button" class="btn btn-outline-danger btn-sm"
+                                        onclick="deleteAttachment({{ task.id }}, {{ attachment.id }})"
+                                        title="Удалить">
+                                    <i class="fa-solid fa-times"></i>
+                                </button>
+                            </li>
+                        {% endfor %}
+                    </ul>
+                {% else %}
+                    <p class="text-muted text-center mb-3">Нет вложений</p>
+                {% endif %}
+
+                <form action="{{ base_url('/tasks/' ~ task.id ~ '/attachments/upload') }}" method="post"
+                      class="d-flex gap-2 attachment-form" enctype="multipart/form-data"
+                      onsubmit="uploadAttachment(event, {{ task.id }})">
+                    {{ csrf_field()|raw }}
+                    <input type="file" name="file" class="form-control" required>
+                    <button type="submit" class="btn btn-primary">
+                        <i class="fa-solid fa-upload"></i>
+                    </button>
+                </form>
+            </div>
+        </div>
+
         {# Комментарии #}
         <div class="card border-0 shadow-sm">
             <div class="card-header bg-light">
@@ -314,5 +361,67 @@ function deleteSubtask(taskId, subtaskId) {
         console.error('Error:', error);
     });
 }
+
+// ========== Вложения ==========
+
+function uploadAttachment(event, taskId) {
+    event.preventDefault();
+    const form = event.target;
+    const fileInput = form.querySelector('input[name="file"]');
+    const file = fileInput.files[0];
+
+    if (!file) {
+        alert('Выберите файл');
+        return;
+    }
+
+    const formData = new FormData();
+    formData.append('file', file);
+    formData.append('csrf_token', form.querySelector('input[name="csrf_token"]').value);
+
+    fetch(`/tasks/${taskId}/attachments/upload`, {
+        method: 'POST',
+        headers: {
+            'X-Requested-With': 'XMLHttpRequest'
+        },
+        body: formData
+    })
+    .then(response => response.json())
+    .then(data => {
+        if (data.success) {
+            location.reload();
+        } else {
+            alert(data.error || 'Ошибка при загрузке файла');
+        }
+    })
+    .catch(error => {
+        console.error('Error:', error);
+        alert('Ошибка при загрузке файла');
+    });
+}
+
+function deleteAttachment(taskId, attachmentId) {
+    if (!confirm('Удалить вложение?')) return;
+
+    fetch(`/tasks/${taskId}/attachments/${attachmentId}/delete`, {
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/x-www-form-urlencoded',
+            'X-Requested-With': 'XMLHttpRequest'
+        },
+        body: ''
+    })
+    .then(response => response.json())
+    .then(data => {
+        if (!data.success) {
+            alert(data.error || 'Ошибка');
+        } else {
+            location.reload();
+        }
+    })
+    .catch(error => {
+        console.error('Error:', error);
+    });
+}
 </script>
 {% endblock %}