"use client";

import { fetchData } from "@/lib/data-service";
import { useState } from "react";
import Link from "next/link";
import { useRouter } from "next/navigation";
import {
  Package,
  ShoppingCart,
  Home,
  Truck,
  Box,
  Settings,
  LogOut,
  Menu,
} from "lucide-react";

import { NavItem } from "./nav-item";

interface SidebarItem {
  name: string;
  href: string;
  icon: React.ElementType;
}

interface SidebarSection {
  title: string;
  items: SidebarItem[];
}

const sidebarConfig: SidebarSection[] = [
  {
    title: "Overview",
    items: [
      { name: "Dashboard", href: "/dashboard", icon: Home },
      { name: "Orders", href: "/dashboard/orders", icon: Package },
    ],
  },
  {
    title: "Management",
    items: [
      { name: "Products", href: "/dashboard/products", icon: Box },
      { name: "Shipping", href: "/dashboard/shipping", icon: Truck },
      { name: "Storefront", href: "/dashboard/storefront", icon: Settings },
    ],
  },
];


const Sidebar: React.FC = () => {
  const [isMobileMenuOpen, setIsMobileMenuOpen] = useState(false);
  const router = useRouter();

  const handleLogout = async () => {
    try {
      const authToken = document.cookie.split("authToken=")[1];
      const res = await fetchData(`${process.env.NEXT_PUBLIC_API_URL}/logout`, {
        method: "POST",
        headers: { Authorization: `Bearer ${authToken}` },
        credentials: "include",
      });

      if (!res.ok) throw new Error("Logout failed");

      document.cookie =
        "authToken=; Path=/; Expires=Thu, 01 Jan 1970 00:00:00 GMT;";
      router.push("/login");
    } catch (error) {
      console.error("Logout error:", error);
    }
  };

  return (
    <>
      {/* Sidebar Navigation */}
      <nav
        className={`
          fixed inset-y-0 left-0 z-[70] w-64 bg-white dark:bg-[#0F0F12] transform transition-transform duration-200 ease-in-out
          lg:translate-x-0 lg:static lg:w-64 border-r border-gray-200 dark:border-[#1F1F23]
          ${isMobileMenuOpen ? "translate-x-0" : "-translate-x-full"}
        `}
      >
        <div className="h-full flex flex-col">
          {/* Brand Logo */}
          <Link
            href="/dashboard"
            className="h-16 px-6 flex items-center border-b border-gray-200 dark:border-[#1F1F23]"
          >
            <div className="flex items-center gap-3">
              <ShoppingCart className="h-6 w-6 text-gray-900 dark:text-white" />
              <span className="text-lg font-semibold text-gray-900 dark:text-white">
                Ember
              </span>
            </div>
          </Link>

          {/* Sidebar Navigation Items */}
          <div className="flex-1 overflow-y-auto py-4 px-4 space-y-6">
            {sidebarConfig.map((section, index) => (
              <div key={index}>
                <div className="px-3 mb-2 text-xs font-semibold uppercase tracking-wider text-gray-500 dark:text-gray-400">
                  {section.title}
                </div>
                <div className="space-y-1">
                  {section.items.map((item, idx) => (
                    <NavItem
                      key={idx}
                      href={item.href}
                      icon={item.icon}
                      onClick={() => setIsMobileMenuOpen(false)}
                    >
                      {item.name}
                    </NavItem>
                  ))}
                </div>
              </div>
            ))}
          </div>

          {/* Logout Button */}
          <div className="p-4 border-t border-gray-200 dark:border-[#1F1F23]">
            <button
              onClick={handleLogout}
              className="w-full flex items-center px-3 py-2 text-sm rounded-md transition-colors text-red-600 dark:text-red-400 hover:text-red-800 dark:hover:text-red-500 hover:bg-gray-50 dark:hover:bg-[#1F1F23]"
            >
              <LogOut className="h-5 w-5 mr-3 flex-shrink-0" />
              Logout
            </button>
          </div>
        </div>
      </nav>

      {/* Mobile Menu Overlay */}
      {isMobileMenuOpen && (
        <div
          className="fixed inset-0 bg-black bg-opacity-50 z-[65] lg:hidden"
          onClick={() => setIsMobileMenuOpen(false)}
        />
      )}
    </>
  );
};

export default Sidebar;
