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

const AUDITS_BASE_URL =
  process.env.AUDITS_BASE_URL ||
  process.env.BE_BASE_URL ||
  "http://localhost:8583";
const COOKIE_NAME = "auth_token";

const DEFAULT_LIMIT = "25";
const DEFAULT_PAGE = "1";

export async function GET(request: NextRequest) {
  try {
    const { cookies } = await import("next/headers");
    const cookieStore = await cookies();
    const token = cookieStore.get(COOKIE_NAME)?.value;

    if (!token) {
      return NextResponse.json(
        { message: "Missing Authorization header" },
        { status: 401 }
      );
    }

    const { searchParams } = new URL(request.url);
    const proxiedParams = new URLSearchParams();

    // Forward provided params
    searchParams.forEach((value, key) => {
      if (value == null || value === "") return;
      proxiedParams.append(key, value);
    });

    if (!proxiedParams.has("limit")) {
      proxiedParams.set("limit", DEFAULT_LIMIT);
    }
    if (!proxiedParams.has("page")) {
      proxiedParams.set("page", DEFAULT_PAGE);
    }

    const backendUrl = `${AUDITS_BASE_URL}/api/v1/audit${
      proxiedParams.size ? `?${proxiedParams.toString()}` : ""
    }`;

    const response = await fetch(backendUrl, {
      method: "GET",
      headers: {
        "Content-Type": "application/json",
        Authorization: `Bearer ${token}`,
      },
      cache: "no-store",
    });

    if (!response.ok) {
      const errorData = await response
        .json()
        .catch(() => ({ message: "Failed to fetch audits" }));
      return NextResponse.json(
        {
          success: false,
          message: errorData?.message || "Failed to fetch audits",
        },
        { status: response.status }
      );
    }

    const data = await response.json();
    console.log("[AUDITS] data:", data);
    return NextResponse.json(data, { status: response.status });
  } catch (err: unknown) {
    console.log("[AUDITS] error:", err);

    console.error("Proxy GET /api/v1/audits error:", err);
    const errorMessage = err instanceof Error ? err.message : "Unknown error";
    return NextResponse.json(
      { message: "Internal server error", error: errorMessage },
      { status: 500 }
    );
  }
}