Implement clear-subtasks MCP command for clearing subtasks from parent tasks

mcp-server/src/tools/clear-subtasks.js

@@ -0,0 +1,52 @@
+/**
+ * tools/clear-subtasks.js
+ * Tool for clearing subtasks from parent tasks
+ */
+
+import { z } from "zod";
+import {
+  handleApiResult,
+  createErrorResponse
+} from "./utils.js";
+import { clearSubtasksDirect } from "../core/task-master-core.js";
+
+/**
+ * Register the clearSubtasks tool with the MCP server
+ * @param {Object} server - FastMCP server instance
+ */
+export function registerClearSubtasksTool(server) {
+  server.addTool({
+    name: "clear_subtasks",
+    description: "Clear subtasks from specified tasks",
+    parameters: z.object({
+      id: z.string().optional().describe("Task IDs (comma-separated) to clear subtasks from"),
+      all: z.boolean().optional().describe("Clear subtasks from all tasks"),
+      file: z.string().optional().describe("Path to the tasks file (default: tasks/tasks.json)"),
+      projectRoot: z.string().optional().describe("Root directory of the project (default: current working directory)")
+    }).refine(data => data.id || data.all, {
+      message: "Either 'id' or 'all' parameter must be provided",
+      path: ["id", "all"]
+    }),
+    execute: async (args, { log }) => {
+      try {
+        log.info(`Clearing subtasks with args: ${JSON.stringify(args)}`);
+        
+        // Call the direct function wrapper
+        const result = await clearSubtasksDirect(args, log);
+        
+        // Log result
+        if (result.success) {
+          log.info(`Subtasks cleared successfully: ${result.data.message}`);
+        } else {
+          log.error(`Failed to clear subtasks: ${result.error.message}`);
+        }
+        
+        // Use handleApiResult to format the response
+        return handleApiResult(result, log, 'Error clearing subtasks');
+      } catch (error) {
+        log.error(`Error in clearSubtasks tool: ${error.message}`);
+        return createErrorResponse(error.message);
+      }
+    },
+  });
+}