import { z } from "zod";

import type { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";

import { execDocker, errorResponse } from "../utils/docker-api.js";

const inputSchema = {

nodes: z.array(z.string()).min(1).describe("Node IDs or hostnames to demote to worker"),

};

export function register(server: McpServer): void {

server.tool(

"docker_nodeDemote",

"Demote one or more Docker Swarm manager nodes to worker",

inputSchema,

async (args) => {

try {

const output = await execDocker(["node", "demote", ...args.nodes]);

return { content: [{ type: "text" as const, text: output.trim() || `Demoted nodes: ${args.nodes.join(", ")}` }] };

} catch (error) {

return errorResponse(error);

}

},

);

}