import { NextRequest, NextResponse } from "next/server";

export async function GET(request: NextRequest) {
  try {
    const { searchParams } = new URL(request.url);
    const vrn = searchParams.get("vrn");
    const userId = searchParams.get("userId");

    if (!vrn) {
      return NextResponse.json(
        { error: "Vehicle registration number is required" },
        { status: 400 }
      );
    }

    if (!userId) {
      return NextResponse.json(
        { error: "User ID is required" },
        { status: 400 }
      );
    }

    const apiKey =
      Number(userId) === 81707
        ? process.env.NEXT_PUBLIC_CHALLAN_API_HEADER
        : process.env.NEXT_PUBLIC_CHALLAN_CARAVAN;

    if (!apiKey) {
      return NextResponse.json(
        { error: "API key not configured" },
        { status: 500 }
      );
    }

    const response = await fetch(
      `https://app.echallan.app/api/v1/challans/${vrn}`,
      {
        headers: {
          "x-api-key": apiKey,
          "Content-Type": "application/json",
        },
      }
    );

    if (!response.ok) {
      throw new Error(`API responded with status: ${response.status}`);
    }

    const data = await response.json();

    return NextResponse.json(data, {
      headers: {
        "Access-Control-Allow-Origin": "*",
        "Access-Control-Allow-Methods": "GET, POST, PUT, DELETE, OPTIONS",
        "Access-Control-Allow-Headers": "Content-Type, Authorization",
      },
    });
  } catch (error: any) {
    console.error("Proxy API error:", error);
    return NextResponse.json(
      { error: error.message || "Failed to fetch vehicle details" },
      { status: 500 }
    );
  }
}

export async function OPTIONS() {
  return new NextResponse(null, {
    status: 200,
    headers: {
      "Access-Control-Allow-Origin": "*",
      "Access-Control-Allow-Methods": "GET, POST, PUT, DELETE, OPTIONS",
      "Access-Control-Allow-Headers": "Content-Type, Authorization",
    },
  });
}