feat(mcp): Implement add-dependency MCP command for creating dependency relationships between tasks

mcp-server/src/core/direct-functions/add-dependency.js

@@ -0,0 +1,75 @@
+/**
+ * add-dependency.js
+ * Direct function implementation for adding a dependency to a task
+ */
+
+import { addDependency } from '../../../../scripts/modules/dependency-manager.js';
+import { findTasksJsonPath } from '../utils/path-utils.js';
+
+/**
+ * Direct function wrapper for addDependency with error handling.
+ * 
+ * @param {Object} args - Command arguments
+ * @param {string|number} args.id - Task ID to add dependency to
+ * @param {string|number} args.dependsOn - Task ID that will become a dependency
+ * @param {string} [args.file] - Path to the tasks file
+ * @param {string} [args.projectRoot] - Project root directory
+ * @param {Object} log - Logger object
+ * @returns {Promise<Object>} - Result object with success status and data/error information
+ */
+export async function addDependencyDirect(args, log) {
+  try {
+    log.info(`Adding dependency with args: ${JSON.stringify(args)}`);
+    
+    // Validate required parameters
+    if (!args.id) {
+      return {
+        success: false,
+        error: {
+          code: 'INPUT_VALIDATION_ERROR',
+          message: 'Task ID (id) is required'
+        }
+      };
+    }
+    
+    if (!args.dependsOn) {
+      return {
+        success: false,
+        error: {
+          code: 'INPUT_VALIDATION_ERROR',
+          message: 'Dependency ID (dependsOn) is required'
+        }
+      };
+    }
+    
+    // Find the tasks.json path
+    const tasksPath = findTasksJsonPath(args, log);
+    
+    // Format IDs for the core function
+    const taskId = args.id.includes && args.id.includes('.') ? args.id : parseInt(args.id, 10);
+    const dependencyId = args.dependsOn.includes && args.dependsOn.includes('.') ? args.dependsOn : parseInt(args.dependsOn, 10);
+    
+    log.info(`Adding dependency: task ${taskId} will depend on ${dependencyId}`);
+    
+    // Call the core function
+    await addDependency(tasksPath, taskId, dependencyId);
+    
+    return {
+      success: true,
+      data: {
+        message: `Successfully added dependency: Task ${taskId} now depends on ${dependencyId}`,
+        taskId: taskId,
+        dependencyId: dependencyId
+      }
+    };
+  } catch (error) {
+    log.error(`Error in addDependencyDirect: ${error.message}`);
+    return {
+      success: false,
+      error: {
+        code: 'CORE_FUNCTION_ERROR',
+        message: error.message
+      }
+    };
+  }
+}