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

export async function middleware(req: NextRequest) {
  // Check for auth token in cookies
  const token = req.cookies.get("Authorization")?.value;
  
  // Debug info about all cookies
  const allCookies = req.cookies.getAll();
  console.log("Middleware: All cookies:", allCookies.map(c => c.name).join(', '));
  
  if (!token) {
    // Try to get from Authorization header as fallback
    const authHeader = req.headers.get('Authorization');
    
    if (authHeader?.startsWith('Bearer ')) {
      console.log("Middleware: Token found in Authorization header");
      // Continue with validation using header auth
      // The authCheckUrl will handle extracting the token from header
    } else {
      console.log("Middleware: No token found in cookies or headers, redirecting to login...");
      return NextResponse.redirect(new URL("/auth/login", req.url));
    }
  } else {
    console.log("Middleware: Token found in cookies, validating...");
  }

  try {
    // Get the origin but handle localhost differently to avoid SSL issues
    const origin = req.nextUrl.origin;
    
    // Construct the auth check URL based on environment
    // For localhost, explicitly use HTTP instead of HTTPS
    const isLocalhost = origin.includes('localhost') || origin.includes('127.0.0.1');
    const protocol = isLocalhost ? 'http' : 'https';
    const host = req.nextUrl.host;
    const authCheckUrl = `${protocol}://${host}/api/auth/check`;
    
    console.log(`Using internal auth check URL: ${authCheckUrl}`);
    
    // Clone headers to avoid modifying the original request
    const headers = new Headers(req.headers);
    
    // If token is in cookie, ensure it's also in Authorization header
    if (token && !headers.has('Authorization')) {
      headers.set('Authorization', `Bearer ${token}`);
    }
    
    const res = await fetch(authCheckUrl, {
      method: "GET",
      headers,
      credentials: 'include',
    });

    console.log(`Middleware: Auth check responded with status ${res.status}`);

    if (!res.ok) {
      console.log(`Middleware: Auth check failed with status ${res.status}, redirecting to login`);
      return NextResponse.redirect(new URL("/auth/login", req.url));
    }

    console.log("Middleware: Auth check successful, proceeding to dashboard");
  } catch (error) {
    console.error("Authentication validation failed:", error);
    return NextResponse.redirect(new URL("/auth/login", req.url));
  }

  return NextResponse.next();
}

export const config = {
  matcher: ["/dashboard/:path*"],
};