import { NextRequest, NextResponse } from "next/server";
import { fetchDashboardDataService } from "@/app/services/health";
import {
  transformHealthDataToStats,
  transformOverviewResponse,
} from "./utils/dashboard";

export async function GET(request: NextRequest) {
  try {
    const { searchParams } = new URL(request.url);
    const dateStart = searchParams.get("dateStart") ?? undefined;
    const dateEnd = searchParams.get("dateEnd") ?? undefined;

    // Fetch all dashboard data (health, overview, and review transactions) concurrently
    const dashboardData = await fetchDashboardDataService({
      dateStart,
      dateEnd,
    });
    const { healthData, overviewData, reviewTransactions } = dashboardData;
    // Transform health data to stats format using shared util
    const stats = transformHealthDataToStats(healthData);
    const transformedOverviewData = transformOverviewResponse(overviewData);
    // console.log("[TransformedOverviewData] - Route", transformedOverviewData);
    const response = {
      ...healthData,
      stats,
      overviewData: {
        ...overviewData,
        data: transformedOverviewData,
      },
      reviewTransactions: reviewTransactions,
    };

    return NextResponse.json(response, { status: 200 });
  } catch (err: unknown) {
    const errorMessage = err instanceof Error ? err.message : "Unknown error";
    return NextResponse.json(
      { success: false, message: errorMessage },
      { status: 500 }
    );
  }
}