import { Link, useLocation } from "wouter";
import { Menu, X, Search } from "lucide-react";
import { Button } from "@/components/ui/button";
import { useState, useRef, useEffect } from "react";
import folxLogo from "@assets/folx_MT_poz_b_1772296729169.png";

const navItems = [
  { label: "Start", href: "/" },
  { label: "News", href: "/category/News" },
  { label: "Video", href: "/videos" },
  { label: "Galerie", href: "/gallery" },
  { label: "Horoskop", href: "/horoskop" },
  { label: "Rezepte", href: "/rezepte" },
];

export default function Header() {
  const [mobileOpen, setMobileOpen] = useState(false);
  const [searchOpen, setSearchOpen] = useState(false);
  const [searchQuery, setSearchQuery] = useState("");
  const [location, navigate] = useLocation();
  const searchInputRef = useRef<HTMLInputElement>(null);

  useEffect(() => {
    if (searchOpen && searchInputRef.current) {
      searchInputRef.current.focus();
    }
  }, [searchOpen]);

  const handleSearch = (e: React.FormEvent) => {
    e.preventDefault();
    if (searchQuery.trim().length >= 2) {
      const url = `/search?q=${encodeURIComponent(searchQuery.trim())}`;
      setSearchOpen(false);
      setSearchQuery("");
      setMobileOpen(false);
      window.location.href = url;
    }
  };

  return (
    <header className="sticky top-0 z-50 bg-background/95 backdrop-blur-md border-b border-card-border" data-testid="header">
      <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
        <div className="flex items-center justify-between gap-4 h-16">
          <Link href="/">
            <div className="flex items-center gap-2 cursor-pointer" data-testid="link-logo">
              <img src={folxLogo} alt="Folx TV" className="h-32 w-auto object-contain py-1" />
            </div>
          </Link>

          <nav className="hidden md:flex items-center gap-1" data-testid="nav-desktop">
            {navItems.map((item) => (
              <Link key={item.href} href={item.href}>
                <Button
                  variant={location === item.href ? "default" : "ghost"}
                  size="sm"
                  data-testid={`link-nav-${item.label.toLowerCase().replace(/\s/g, "-")}`}
                >
                  {item.label}
                </Button>
              </Link>
            ))}
          </nav>

          <div className="flex items-center gap-2">
            {searchOpen ? (
              <form onSubmit={handleSearch} className="flex items-center gap-1" data-testid="form-header-search">
                <input
                  ref={searchInputRef}
                  type="text"
                  value={searchQuery}
                  onChange={(e) => setSearchQuery(e.target.value)}
                  placeholder="Suchen..."
                  className="w-32 sm:w-48 px-3 py-1.5 bg-card border border-card-border rounded-md text-sm text-foreground placeholder:text-muted-foreground focus:outline-none focus:ring-1 focus:ring-primary"
                  data-testid="input-header-search"
                />
                <Button
                  type="button"
                  variant="ghost"
                  size="icon"
                  className="h-8 w-8"
                  onClick={() => { setSearchOpen(false); setSearchQuery(""); }}
                  data-testid="button-close-search"
                >
                  <X className="w-4 h-4" />
                </Button>
              </form>
            ) : (
              <Button
                variant="ghost"
                size="icon"
                className="h-8 w-8"
                onClick={() => setSearchOpen(true)}
                data-testid="button-open-search"
              >
                <Search className="w-4 h-4" />
              </Button>
            )}
            <Button
              variant="ghost"
              size="icon"
              className="md:hidden"
              onClick={() => setMobileOpen(!mobileOpen)}
              data-testid="button-mobile-menu"
            >
              {mobileOpen ? <X className="w-5 h-5" /> : <Menu className="w-5 h-5" />}
            </Button>
          </div>
        </div>
      </div>

      {mobileOpen && (
        <div className="md:hidden border-t border-card-border bg-card" data-testid="nav-mobile">
          <nav className="flex flex-col p-4 gap-1">
            <form onSubmit={handleSearch} className="mb-2" data-testid="form-mobile-search">
              <div className="relative">
                <Search className="absolute left-3 top-1/2 -translate-y-1/2 w-4 h-4 text-muted-foreground" />
                <input
                  type="text"
                  value={searchQuery}
                  onChange={(e) => setSearchQuery(e.target.value)}
                  placeholder="Artikel, Videos suchen..."
                  className="w-full pl-9 pr-3 py-2 bg-background border border-card-border rounded-md text-sm text-foreground placeholder:text-muted-foreground focus:outline-none focus:ring-1 focus:ring-primary"
                  data-testid="input-mobile-search"
                />
              </div>
            </form>
            {navItems.map((item) => (
              <Link key={item.href} href={item.href}>
                <Button
                  variant={location === item.href ? "default" : "ghost"}
                  className="w-full justify-start"
                  onClick={() => setMobileOpen(false)}
                  data-testid={`link-mobile-${item.label.toLowerCase().replace(/\s/g, "-")}`}
                >
                  {item.label}
                </Button>
              </Link>
            ))}
          </nav>
        </div>
      )}
    </header>
  );
}