"use client";

import React, { useState, useEffect } from "react";
import Link from "next/link";
import { Button } from "./button";
import { Sheet, SheetContent, SheetTrigger, SheetTitle } from "./sheet";
import { Menu, X, ChevronDown, Database } from "lucide-react";
import { HoverCard, HoverCardContent, HoverCardTrigger } from "./hover-card";
import { usePathname } from "next/navigation";

const NavBar = () => {
  const [isScrolled, setIsScrolled] = useState(false);
  const [isOpen, setIsOpen] = useState(false);
  const pathname = usePathname();

  useEffect(() => {
    const handleScroll = () => {
      setIsScrolled(window.scrollY > 10);
    };

    window.addEventListener("scroll", handleScroll);
    return () => window.removeEventListener("scroll", handleScroll);
  }, []);

  // For static export, we need to manually add the mobile menu toggle functionality
  useEffect(() => {
    const toggleButton = document.querySelector('[aria-haspopup="dialog"]');
    const sheet = document.querySelector('[role="dialog"]');

    if (toggleButton && sheet) {
      const handleToggle = () => {
        setIsOpen(!isOpen);
      };

      toggleButton.addEventListener('click', handleToggle);

      return () => {
        toggleButton.removeEventListener('click', handleToggle);
      };
    }
  }, [isOpen]);

  const navLinks = [
    { label: "Home", href: "/" },
    {
      label: "Services",
      href: "/services",
      submenu: [
        { label: "Hardware Solutions", href: "/services/hardware-solutions" },
        { label: "FOSS Support", href: "/services/foss-support" },
        { label: "Data Services", href: "/services/data-services" },
      ]
    },
    { label: "About", href: "/#about" },
    { label: "Contact", href: "/contact" },
  ];

  const isActive = (href: string) => {
    if (href === '/') {
      return pathname === href;
    }
    return pathname?.startsWith(href);
  };

  const handleMenuToggle = () => {
    setIsOpen(!isOpen);
  };

  return (
    <header
      className={`fixed top-0 left-0 right-0 z-50 transition-all duration-300 ${
        isScrolled
          ? "bg-netbirdDark/90 backdrop-blur-md py-3 shadow-md"
          : "bg-transparent py-5"
      }`}
    >
      <div className="container mx-auto flex items-center justify-between">
        <Link href="/" className="flex items-center">
          <span className="text-2xl font-bold text-white flex items-center">
            <span className="text-netbirdOrange flex items-center">
              <Database className="mr-2 h-6 w-6" />
              DWD
            </span>
            <span className="ml-2">Data Consultancy</span>
          </span>
        </Link>

        {/* Desktop Navigation */}
        <nav className="hidden md:flex items-center gap-6">
          {navLinks.map((link, index) => (
            link.submenu ? (
              <HoverCard key={index} openDelay={0} closeDelay={100}>
                <HoverCardTrigger asChild>
                  <div className="relative group">
                    <Link
                      href={link.href}
                      className={`text-sm flex items-center gap-1 ${
                        isActive(link.href)
                          ? "text-netbirdOrange"
                          : "text-white/80 hover:text-netbirdOrange transition-colors"
                      }`}
                    >
                      {link.label}
                      <ChevronDown className="h-4 w-4" />
                    </Link>
                  </div>
                </HoverCardTrigger>
                <HoverCardContent
                  className="w-64 bg-[#0d1324] border border-white/10 p-0 shadow-xl"
                >
                  <div className="flex flex-col py-2">
                    {link.submenu.map((sublink, subIndex) => (
                      <Link
                        key={subIndex}
                        href={sublink.href}
                        className={`text-sm px-4 py-2 hover:bg-white/5 ${
                          isActive(sublink.href)
                            ? "text-netbirdOrange"
                            : "text-white/80 hover:text-netbirdOrange"
                        }`}
                      >
                        {sublink.label}
                      </Link>
                    ))}
                  </div>
                </HoverCardContent>
              </HoverCard>
            ) : (
              <Link
                key={index}
                href={link.href}
                className={`text-sm ${
                  isActive(link.href)
                    ? "text-netbirdOrange"
                    : "text-white/80 hover:text-netbirdOrange transition-colors"
                }`}
              >
                {link.label}
              </Link>
            )
          ))}
          <Link href="/contact">
            <Button className="bg-netbirdOrange hover:bg-netbirdOrange/90 text-white">
              Get Started
            </Button>
          </Link>
        </nav>

        {/* Mobile Navigation */}
        <Sheet open={isOpen} onOpenChange={setIsOpen}>
          <SheetTrigger asChild className="md:hidden">
            <Button
              variant="ghost"
              size="icon"
              className="text-white"
              onClick={handleMenuToggle}
            >
              <Menu className="h-6 w-6" />
              <span className="sr-only">Toggle menu</span>
            </Button>
          </SheetTrigger>
          <SheetContent
            side="right"
            className="w-[300px] sm:w-[350px] max-w-full bg-netbirdDark border-netbirdDark overflow-y-auto"
          >
            <SheetTitle className="sr-only">Navigation Menu</SheetTitle>
            <div className="flex flex-col h-full">
              <div className="flex justify-between items-center py-4">
                <span className="text-xl font-bold text-white flex items-center">
                  <span className="text-netbirdOrange flex items-center">
                    <Database className="mr-1 h-5 w-5" />
                    DWD
                  </span>
                  <span className="ml-1 text-sm">Data Consultancy</span>
                </span>
                <Button
                  variant="ghost"
                  size="icon"
                  onClick={() => setIsOpen(false)}
                >
                  <X className="h-6 w-6 text-white" />
                </Button>
              </div>
              <nav className="flex flex-col gap-4 mt-8">
                {navLinks.map((link, index) => (
                  <div key={index}>
                    <Link
                      href={link.href}
                      className={`text-lg ${
                        isActive(link.href)
                          ? "text-netbirdOrange"
                          : "text-white/80 hover:text-netbirdOrange"
                      } py-2 transition-colors flex items-center justify-between`}
                      onClick={() => !link.submenu && setIsOpen(false)}
                    >
                      {link.label}
                      {link.submenu && <ChevronDown className="h-4 w-4" />}
                    </Link>

                    {link.submenu && (
                      <div className="pl-4 mt-2 border-l border-white/10 space-y-2">
                        {link.submenu.map((sublink, subIndex) => (
                          <Link
                            key={subIndex}
                            href={sublink.href}
                            className={`block text-base ${
                              isActive(sublink.href)
                                ? "text-netbirdOrange"
                                : "text-white/70 hover:text-netbirdOrange"
                            } py-1 transition-colors`}
                            onClick={() => setIsOpen(false)}
                          >
                            {sublink.label}
                          </Link>
                        ))}
                      </div>
                    )}
                  </div>
                ))}
                <Link href="/contact" onClick={() => setIsOpen(false)}>
                  <Button className="bg-netbirdOrange hover:bg-netbirdOrange/90 text-white mt-4 w-full">
                    Get Started
                  </Button>
                </Link>
              </nav>
            </div>
          </SheetContent>
        </Sheet>
      </div>
    </header>
  );
};

export default NavBar;