/**
* Session management tools - list, select, terminate sessions
*/
import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { z } from "zod";
import { sessionManager } from "../session-manager.js";
import { textResponse } from "./types.js";
export function registerSessionTools(server: McpServer): void {
// Tool: list_sessions
server.tool(
"list_sessions",
"List all active debug sessions with their status",
{},
async () => {
const sessions = sessionManager.listSessions();
if (sessions.length === 0) {
return textResponse("No active debug sessions. Use 'launch' or 'launch_watch' to start one.");
}
const lines = sessions.map((s) => {
const defaultMarker = s.isDefault ? " (default)" : "";
const status = s.status.state;
const info = s.status.stoppedReason ? ` - ${s.status.stoppedReason}` : "";
return `${s.id}${defaultMarker}: ${s.mode} - ${s.program} [${status}${info}]`;
});
return textResponse(`Active Sessions:\n${lines.join("\n")}`);
}
);
// Tool: select_session
server.tool(
"select_session",
"Set the default session for subsequent commands",
{
sessionId: z.string().describe("Session ID to make default"),
},
async ({ sessionId }) => {
try {
sessionManager.setDefaultSession(sessionId);
return textResponse(`Default session set to: ${sessionId}`);
} catch (err) {
return textResponse(`Error: ${err instanceof Error ? err.message : String(err)}`);
}
}
);
// Tool: terminate_session
server.tool(
"terminate_session",
"Terminate a specific debug session",
{
sessionId: z.string().describe("Session ID to terminate"),
},
async ({ sessionId }) => {
try {
await sessionManager.removeSession(sessionId);
return textResponse(`Session '${sessionId}' terminated`);
} catch (err) {
return textResponse(`Error: ${err instanceof Error ? err.message : String(err)}`);
}
}
);
}
