Add API to get major nodes and major pipes

main.py

@@ -1403,12 +1403,29 @@ async def fastapi_get_network_coords(network: str) -> list[str] | None:
         result.append(f"{node_id}:{coord['type']}:{coord['x']}:{coord['y']}")
     return result
 
-# DingZQ, 2024-12-08, get all links' start and end node
+# DingZQ, 2024-12-31, get major node coord
+# id:type:x:y
+# type: junction, reservoir, tank
+@app.get("/getmajornodecoords/")
+async def fastapi_get_major_node_coords(network: str) -> list[str] | None:
+    coords = get_major_node_coords(network)
+    result = []
+    for node_id, coord in coords.items():
+        result.append(f"{node_id}:{coord['type']}:{coord['x']}:{coord['y']}")
+    return result
+
+# DingZQ, 2024-12-08, get all links' start and end node 
 # link_id:link_type:node_id1:node_id2
 @app.get("/getnetworklinknodes/")
 async def fastapi_get_network_link_nodes(network: str) -> list[str] | None:
     return get_network_link_nodes(network)
 
+# DingZQ 2024-12-31
+# 获取直径大于800的管道
+@app.get("/getmajorpipenodes/")
+async def fastapi_get_major_pipe_nodes(network: str) -> list[str] | None:
+    return get_major_pipe_nodes(network)
+
 ############################################################
 # vertex 25.[VERTICES]
 ############################################################