import express from 'express';
import { ReportingService } from '../services/reporting.service.js';
import { TimeManager } from '../utils/time.utils.js';

export function createReportingRouter(apiKey, apiRevision) {
  const router = express.Router();
  const timeManager = new TimeManager();
  const reportingService = new ReportingService(apiKey, apiRevision);

  // Get campaign reports with optional filtering
  router.get('/campaigns', async (req, res) => {
    try {
      const { timeRange, startDate, endDate } = req.query;

      let params = {};
      if (timeRange === 'custom') {
        if (!startDate || !endDate) {
          return res.status(400).json({ error: 'Custom range requires startDate and endDate' });
        }
        params = { startDate, endDate };
      } else {
        params = { timeRange: timeRange || 'last30days' };
      }

      console.log('[Reporting Route] Fetching campaign reports with params:', params);
      const data = await reportingService.getEnrichedCampaignReports(params);
      console.log('[Reporting Route] Success:', {
        count: data.data?.length || 0
      });
      
      res.json(data);
    } catch (error) {
      console.error('[Reporting Route] Error:', error);
      res.status(500).json({ 
        status: 'error', 
        message: error.message,
        details: error.response?.data || null
      });
    }
  });

  // Get campaign reports by time range
  router.get('/campaigns/:timeRange', async (req, res) => {
    try {
      const { timeRange } = req.params;

      let result;
      if (timeRange === 'custom') {
        const { startDate, endDate } = req.query;
        if (!startDate || !endDate) {
          return res.status(400).json({ error: 'Custom range requires startDate and endDate' });
        }

        result = await reportingService.getEnrichedCampaignReports({
          startDate,
          endDate
        });
      } else {
        result = await reportingService.getEnrichedCampaignReports({
          timeRange
        });
      }

      res.json(result);
    } catch (error) {
      console.error("[Reporting Route] Error:", error);
      res.status(500).json({ error: error.message });
    }
  });

  return router;
}