kunnel

backend/src/controllers/analyticsController.ts

@@ -113,6 +113,77 @@ export class AnalyticsController {
       }, 500);
     }
   }
+
+  /**
+   * Get KOL conversion funnel data
+   * Returns user counts and conversion rates for each funnel stage
+   * 
+   * @param c Hono Context
+   * @returns Response with funnel data
+   */
+  async getKolFunnel(c: Context) {
+    const requestId = `req_${Date.now()}_${Math.random().toString(36).substring(2, 10)}`;
+    const startTime = Date.now();
+    
+    try {
+      // Get query parameters
+      const timeRange = c.req.query('timeRange') || '30'; // Default to 30 days
+      const projectId = c.req.query('projectId'); // Optional project filter
+      const debug = c.req.query('debug') || 'false'; // Debug mode
+      
+      logger.info(`[${requestId}] KOL funnel request received`, { 
+        timeRange, 
+        projectId, 
+        debug,
+        userAgent: c.req.header('user-agent'),
+        ip: c.req.header('x-forwarded-for') || 'unknown'
+      });
+
+      // Validate time range
+      if (!['7', '30', '90'].includes(timeRange)) {
+        logger.warn(`[${requestId}] Invalid timeRange: ${timeRange}`);
+        return c.json({ 
+          success: false,
+          error: 'Invalid timeRange. Must be 7, 30, or 90.' 
+        }, 400);
+      }
+
+      // Get funnel data from service
+      const data = await analyticsService.getKolFunnel(
+        parseInt(timeRange, 10),
+        projectId
+      );
+
+      // Debug mode - log additional data
+      if (debug.toLowerCase() === 'true' && process.env.NODE_ENV !== 'production') {
+        await analyticsService.debugEventData();
+      }
+
+      // Log successful response
+      const duration = Date.now() - startTime;
+      logger.info(`[${requestId}] KOL funnel response sent successfully`, {
+        duration,
+        stageCount: data.stages.length
+      });
+
+      // Return the data
+      return c.json({
+        success: true,
+        data
+      });
+    } catch (error) {
+      // Log error
+      const duration = Date.now() - startTime;
+      logger.error(`[${requestId}] Error fetching KOL funnel (${duration}ms)`, error);
+      
+      // Return error response
+      return c.json({ 
+        success: false,
+        error: 'Failed to fetch KOL funnel data',
+        message: error instanceof Error ? error.message : 'Unknown error'
+      }, 500);
+    }
+  }
 }
 
 // Export singleton instance