import React, { useState, useEffect } from "react";
import {
  Outlet,
  NavLink,
  useNavigate,
  useLocation,
} from "react-router-dom";
import {
  Bell,
  Menu,
  LogOut,
  User,
  Settings,
  Home,
  FolderKanban,
  X,
  CalendarDays,
  SettingsIcon,
  TimerIcon,
  HelpCircleIcon,
} from "lucide-react";

interface User {
  email: string;
  password: string;
}

interface DashboardLayoutProps {
  user: User | null;
  setUser: React.Dispatch<React.SetStateAction<User | null>>;
}

const DashboardLayout: React.FC<DashboardLayoutProps> = ({ setUser }) => {
  const [isSidebarOpen, setSidebarOpen] = useState(true);
  const [isMobile, setIsMobile] = useState(window.innerWidth < 768);
  const navigate = useNavigate();
  const location = useLocation();

  useEffect(() => {
    const handleResize = () => {
      const mobile = window.innerWidth < 768;
      setIsMobile(mobile);
      setSidebarOpen(!mobile);
    };

    handleResize();
    window.addEventListener("resize", handleResize);
    return () => window.removeEventListener("resize", handleResize);
  }, []);

  const handleLogout = () => {
    localStorage.removeItem("user");
    setUser(null);
    navigate("/login");
  };

  const toggleSidebar = () => setSidebarOpen(!isSidebarOpen);

  const closeSidebarOnMobile = () => {
    if (isMobile) setSidebarOpen(false);
  };

  const menuItems = [
    { label: "Dashboard", path: "/dashboard", icon: <Home size={18} />, exact: true },
    { label: "Projects", path: "/dashboard/projects", icon: <FolderKanban size={18} /> },
    { label: "PTO", path: "/dashboard/leave-adjustments", icon: <CalendarDays size={18} /> },
    { label: "Timesheet", path: "/dashboard/timesheet", icon: <TimerIcon size={18} /> },
    { label: "Settings", path: "/dashboard/settings", icon: <SettingsIcon size={18} /> },
    { label: "Help & Support", path: "/dashboard/help-support", icon: <HelpCircleIcon size={18} /> },
  ];

  return (
    <div className="flex h-screen bg-base-200 overflow-hidden">
      {/* Sidebar */}
      <aside
        className={`
          fixed md:relative inset-y-0 left-0 z-40 transform 
          bg-base-100 border-r border-t border-base-300 transition-all duration-300 ease-in-out
          ${
            isMobile
              ? isSidebarOpen
                ? "translate-x-0 w-64"
                : "-translate-x-full w-64"
              : isSidebarOpen
              ? "w-50"
              : "w-20"
          }
        `}
      >
        {/* Sidebar Header */}
        <div className="h-14 text-xl font-bold flex justify-between items-center border-b border-base-300">
          {isSidebarOpen ? (
            <span className="whitespace-nowrap mx-auto">VA Tracker</span>
          ) : (
            <span className="text-primary font-extrabold mx-auto">VA</span>
          )}
          {isMobile && (
            <button
              onClick={toggleSidebar}
              className="btn btn-ghost btn-sm md:hidden"
              aria-label="Close sidebar"
            >
              <X size={20} />
            </button>
          )}
        </div>

        {/* Menu */}
        <ul className="menu px-2 py-4">
          {menuItems.map((item) => (
            <li key={item.label}>
              <NavLink
                to={item.path}
                end={item.exact}
                className={({ isActive }) =>
                  `flex items-center gap-3 my-1 font-medium transition-all duration-150 ${
                    isActive
                      ? "bg-primary text-primary-content rounded-lg"
                      : "hover:bg-base-300 rounded-lg"
                  }`
                }
                onClick={closeSidebarOnMobile}
              >
                <div className="min-w-[24px] flex justify-center">{item.icon}</div>
                {isSidebarOpen && <span>{item.label}</span>}
              </NavLink>
            </li>
          ))}
        </ul>
      </aside>

      {/* Mobile overlay */}
      {isMobile && isSidebarOpen && (
        <div
          className="fixed inset-0 bg-black/20 backdrop-blur-[1px] z-30 md:hidden"
          onClick={closeSidebarOnMobile}
        ></div>
      )}

      {/* Main Content */}
      <div className="flex flex-col flex-1 bg-base-200 transition-all duration-300 ease-in-out">
        {/* Navbar */}
        <nav className="h-14 bg-base-100 border-b border-t border-base-300 px-4 flex justify-between items-center sticky top-0 z-30">
          {/* Left */}
          <div className="flex items-center gap-2">
            <button
              onClick={toggleSidebar}
              className="btn btn-ghost btn-square"
              aria-label="Toggle sidebar"
            >
              <Menu size={20} />
            </button>
            <span className="text-lg font-semibold md:hidden">
              {location.pathname.includes("projects")
                ? "Projects"
                : location.pathname.includes("leave-adjustments")
                ? "Leave & Adjustments"
                : "Dashboard"}
            </span>
          </div>

          {/* Right */}
          <div className="flex items-center gap-1">
            <button className="btn btn-ghost btn-circle">
              <Bell size={20} />
            </button>

            <div className="dropdown dropdown-end">
              <label tabIndex={0} className="btn btn-ghost btn-circle avatar">
                <div className="w-8 h-8 rounded-full ring ring-primary ring-offset-base-100 ring-offset-2 flex justify-center items-center">
                  <User size={18} className="text-base-content" />
                </div>
              </label>
              <ul
                tabIndex={0}
                className="mt-3 p-2 shadow menu menu-sm dropdown-content bg-base-200 rounded-box w-52"
              >
                <li>
                  <a>
                    <Settings size={16} /> Settings
                  </a>
                </li>
                <li>
                  <a onClick={handleLogout} className="text-error">
                    <LogOut size={16} /> Logout
                  </a>
                </li>
              </ul>
            </div>
          </div>
        </nav>

        {/* Page Content */}
        <main className="flex-1 overflow-y-auto p-4 md:px-6 no-scrollbar">
          <Outlet />
        </main>
      </div>
    </div>
  );
};

export default DashboardLayout;