Refactor code for extensability

Refactor code for extensability

src/utils/formatUtils.ts

@@ -0,0 +1,61 @@
+/**
+ * Convert data to CSV format
+ * @param data Array of objects to convert to CSV
+ * @returns CSV formatted string
+ */
+export function convertToCSV(data: any[]): string {
+  if (data.length === 0) return '';
+  
+  // Get headers
+  const headers = Object.keys(data[0]);
+  
+  // Create CSV header row
+  let csv = headers.join(',') + '\n';
+  
+  // Add data rows
+  data.forEach(row => {
+    const values = headers.map(header => {
+      const val = row[header];
+      // Handle strings with commas, quotes, etc.
+      if (typeof val === 'string') {
+        return `"${val.replace(/"/g, '""')}"`;
+      }
+      // Use empty string for null/undefined
+      return val === null || val === undefined ? '' : val;
+    });
+    csv += values.join(',') + '\n';
+  });
+  
+  return csv;
+}
+
+/**
+ * Format error response
+ * @param error Error object or message
+ * @returns Formatted error response object
+ */
+export function formatErrorResponse(error: Error | string): { content: Array<{type: string, text: string}>, isError: boolean } {
+  const message = error instanceof Error ? error.message : error;
+  return {
+    content: [{ 
+      type: "text", 
+      text: JSON.stringify({ error: message }, null, 2) 
+    }],
+    isError: true
+  };
+}
+
+/**
+ * Format success response
+ * @param data Data to format
+ * @returns Formatted success response object
+ */
+export function formatSuccessResponse(data: any): { content: Array<{type: string, text: string}>, isError: boolean } {
+  return {
+    content: [{ 
+      type: "text", 
+      text: JSON.stringify(data, null, 2) 
+    }],
+    isError: false
+  };
+}