All files / src/app/api/admin/analytics/export route.ts

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export const dynamic = "force-dynamic";

/**
 * Analytics Export API Route
 *
 * GET - Generate and download analytics report
 */

import { NextRequest, NextResponse } from "next/server";
import {
  withAdmin,
  withErrorHandling,
} from "@/lib/api";
import { generateAnalyticsReport, type ReportFormat, type ReportData } from "@/lib/analytics/services";
import { subDays } from "date-fns";

/**
 * GET /api/admin/analytics/export
 * Export analytics report
 *
 * Query params:
 * - format: 'json' | 'csv' | 'html' (default: 'json')
 * - days: Number of days to include (default: 30)
 */
async function handleGet(request: NextRequest): Promise<NextResponse> {
  const { searchParams } = new URL(request.url);

  const formatParam = searchParams.get("format") || "json";
  const days = parseInt(searchParams.get("days") || "30", 10);

  // Validate format
  const validFormats: ReportFormat[] = ["json", "csv", "html"];
  const format: ReportFormat = validFormats.includes(formatParam as ReportFormat)
    ? (formatParam as ReportFormat)
    : "json";

  // Validate days
  const validDays = Math.min(Math.max(days, 1), 365);

  // Calculate date range
  const endDate = new Date();
  const startDate = subDays(endDate, validDays);

  const report = await generateAnalyticsReport(startDate, endDate, format);

  // Return appropriate response based on format
  switch (format) {
    case "csv": {
      const csvContent = report as string;
      return new NextResponse(csvContent, {
        headers: {
          "Content-Type": "text/csv",
          "Content-Disposition": `attachment; filename="analytics-report-${validDays}d.csv"`,
        },
      });
    }

    case "html": {
      const htmlContent = report as string;
      return new NextResponse(htmlContent, {
        headers: {
          "Content-Type": "text/html",
          "Content-Disposition": `inline; filename="analytics-report-${validDays}d.html"`,
        },
      });
    }

    default: {
      const jsonData = report as ReportData;
      return NextResponse.json({
        success: true,
        data: jsonData,
      });
    }
  }
}

export const GET = withErrorHandling(withAdmin(handleGet));