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sync_state_machine/domain/attachment/api_handler.py

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+"""
+Attachment API Handler
+
+职责：
+- 加载附件列表（依赖 Project）
+- 附件创建/更新/删除（批量接口）
+"""
+
+from typing import List, Dict, Any
+from ...datasource.api.handler import BaseApiHandler
+from ...datasource.task_result import TaskResult
+from ...common.sync_node import SyncNode
+from .sync_node import AttachmentSyncNode, AttachmentSchema
+
+
+class AttachmentApiHandler(BaseApiHandler):
+    """附件 API Handler"""
+    
+    def __init__(self):
+        super().__init__()
+        self._node_type = "attachment"
+        self._node_class = AttachmentSyncNode
+        self._schema = AttachmentSchema
+    
+    async def load(self) -> List[SyncNode]:
+        """加载附件列表（依赖 Project）"""
+        projects = self._collection.filter(node_type="project")
+        project_ids = [p.data_id for p in projects if p.data_id]
+        
+        if not project_ids:
+            return []
+        
+        all_attachments = []
+        for project_id in project_ids:
+            try:
+                attachments = await api_get_attachment_list(self.api_client, project_id)
+                all_attachments.extend(attachments)
+            except Exception as e:
+                print(f"❌ Failed to load attachments for project {project_id}: {e}")
+        
+        return all_attachments
+    
+    async def create_all(self, nodes: List[SyncNode]) -> List[TaskResult]:
+        """批量创建附件（已禁用）"""
+        return [
+            TaskResult.failed(node_id=node.node_id, error="Attachment push disabled")
+            for node in nodes
+        ]
+    
+    async def update_all(self, nodes: List[SyncNode]) -> List[TaskResult]:
+        """批量更新附件（已禁用）"""
+        return [
+            TaskResult.failed(node_id=node.node_id, error="Attachment push disabled")
+            for node in nodes
+        ]
+    
+    async def delete_all(self, nodes: List[SyncNode]) -> List[TaskResult]:
+        """批量删除附件（已禁用）"""
+        return [
+            TaskResult.failed(node_id=node.node_id, error="Attachment push disabled")
+            for node in nodes
+        ]
+    
+    async def poll_tasks(self, task_ids: List[str]) -> Dict[str, TaskResult]:
+        """轮询异步任务状态（占位）"""
+        return await super().poll_tasks(task_ids)
+    
+    def _create_node(self, data: Dict[str, Any]) -> SyncNode:
+        node = self._create_basic_node(data, depend_ids=[])
+        
+        if data.get("project_id"):
+            node.context["project_id"] = data["project_id"]
+        
+        return node
+
+
+# ========== 静态 API 函数 ==========
+
+async def api_get_attachment_list(client, project_id: str) -> List[Dict[str, Any]]:
+    response = await client.request(
+        method="GET",
+        endpoint="/attachment/list",
+        params={"project_id": project_id}
+    )
+    if response.get("code") != 200:
+        raise Exception(f"API error: {response.get('message', 'Unknown error')}")
+    return response.get("list", [])
+
+
+async def api_create_attachment(client, data: Dict[str, Any], push_id: str, biz_id: str) -> Dict[str, Any]:
+    request_data = {"push_id": push_id, "biz_id": biz_id, **data}
+    response = await client.request(method="POST", endpoint="/attachment/create", data=request_data)
+    if response.get("code") != 200:
+        raise Exception(f"API error: {response.get('message', 'Unknown error')}")
+    return response
+
+
+async def api_delete_attachment(client, attachment_id: str, push_id: str, biz_id: str) -> None:
+    request_data = {"push_id": push_id, "biz_id": biz_id, "id": attachment_id}
+    response = await client.request(method="DELETE", endpoint="/attachment/delete", data=request_data)
+    if response.get("code") != 200:
+        raise Exception(f"API error: {response.get('message', 'Unknown error')}")