修改关阀分析算法，支持多管段分析

app/algorithms/valve_isolation.py

@@ -20,26 +20,45 @@ def _parse_link_entry(link_entry: str) -> tuple[str, str, str, str]:
     return parts[0], parts[1], parts[2], parts[3]
 
 
-def valve_isolation_analysis(network: str, accident_element: str) -> dict[str, Any]:
+def valve_isolation_analysis(
+    network: str, accident_elements: str | list[str]
+) -> dict[str, Any]:
     """
     关阀搜索/分析：基于拓扑结构确定事故隔离所需关阀。
     :param network: 模型名称
-    :param accident_element: 事故点（节点或管道/泵/阀门ID）
+    :param accident_elements: 事故点（节点或管道/泵/阀门ID），可以是单个ID字符串或ID列表
     :return: dict，包含受影响节点、必须关闭阀门、可选阀门等信息
     """
-    if is_node(network, accident_element):
-        start_nodes = {accident_element}
-        accident_type = "node"
-    elif is_link(network, accident_element):
-        accident_type = get_link_type(network, accident_element)
-        link_props = get_link_properties(network, accident_element)
-        node1 = link_props.get("node1")
-        node2 = link_props.get("node2")
-        if not node1 or not node2:
-            raise ValueError("Accident link missing node endpoints")
-        start_nodes = {node1, node2}
+    if isinstance(accident_elements, str):
+        target_elements = [accident_elements]
     else:
-        raise ValueError("Accident element not found")
+        target_elements = accident_elements
+
+    start_nodes = set()
+    accident_types = set()
+
+    for element in target_elements:
+        if is_node(network, element):
+            start_nodes.add(element)
+            accident_types.add("node")
+        elif is_link(network, element):
+            l_type = get_link_type(network, element)
+            accident_types.add(l_type)
+            link_props = get_link_properties(network, element)
+            node1 = link_props.get("node1")
+            node2 = link_props.get("node2")
+            if not node1 or not node2:
+                # 如果是批量处理，可以选择跳过错误或记录错误，这里暂时保持严谨抛出异常
+                raise ValueError(f"Accident link {element} missing node endpoints")
+            start_nodes.add(node1)
+            start_nodes.add(node2)
+        else:
+            raise ValueError(f"Accident element {element} not found")
+
+    # 如果有多种类型混合，简化返回类型描述
+    accident_type_str = (
+        list(accident_types)[0] if len(accident_types) == 1 else "mixed"
+    )
 
     adjacency: dict[str, set[str]] = defaultdict(set)
     valve_links: dict[str, tuple[str, str]] = {}
@@ -76,11 +95,16 @@ def valve_isolation_analysis(network: str, accident_element: str) -> dict[str, A
     must_close_valves.sort()
     optional_valves.sort()
 
-    return {
-        "accident_element": accident_element,
-        "accident_type": accident_type,
+    result = {
+        "accident_elements": target_elements,
+        "accident_type": accident_type_str,
         "affected_nodes": sorted(affected_nodes),
         "must_close_valves": must_close_valves,
         "optional_valves": optional_valves,
         "isolatable": len(must_close_valves) > 0,
     }
+
+    if len(target_elements) == 1:
+        result["accident_element"] = target_elements[0]
+
+    return result