import { fetchData } from '@/lib/data-service';

export const apiRequest = async <T = any>(endpoint: string, method: string = "GET", body?: T | null) => {
  try {
    if (typeof document === "undefined") {
      throw new Error("API requests must be made from the client side.");
    }

    const authToken = document.cookie
      .split("; ")
      .find((row) => row.startsWith("Authorization="))
      ?.split("=")[1];

    if (!authToken){
      document.location.href = "/login"; 
      throw new Error("No authentication token found");
    }

    const options: RequestInit = {
      method,
      headers: {
        Authorization: `Bearer ${authToken}`,
        "Content-Type": "application/json",
      },
      credentials: "include", 
    };

    if (body) {
      options.body = JSON.stringify(body);
    }

    // Always use the Next.js API proxy to ensure all requests go through rewrites
    // Format the endpoint to ensure it has the /api prefix
    let url;
    if (endpoint.startsWith('/api/')) {
      url = endpoint; // Already has /api/ prefix
    } else {
      // Add /api prefix and ensure no duplicate slashes
      const cleanEndpoint = endpoint.startsWith('/') ? endpoint : `/${endpoint}`;
      url = `/api${cleanEndpoint}`;
    }

    const res = await fetchData(url, options);

    if (!res) {
      const errorResponse = await res.json().catch(() => null);
      const errorMessage = errorResponse?.error || res.statusText || "Unknown error";
      throw new Error(`Failed to ${method} ${endpoint}: ${errorMessage}`);
    }

    return res;
  } catch (error: unknown) {
    if (error instanceof Error) {
      console.error(`🚨 API Request Error: ${error.message}`);
      throw new Error(error.message);
    }

    console.error("❌ An unknown error occurred", error);
    throw new Error("An unknown error occurred");
  }
};