"use client";

import { LogOut, User } from "lucide-react";
import Link from "next/link";
import { useLocale, useTranslations } from "next-intl";
import { useEffect, useState } from "react";
import { Avatar, AvatarFallback } from "@/components/ui/avatar";
import { Badge } from "@/components/ui/badge";
import { Button } from "@/components/ui/button";
import {
  DropdownMenu,
  DropdownMenuContent,
  DropdownMenuItem,
  DropdownMenuLabel,
  DropdownMenuSeparator,
  DropdownMenuTrigger,
} from "@/components/ui/dropdown-menu";
import {
  NavigationMenu,
  NavigationMenuItem,
  NavigationMenuLink,
  NavigationMenuList,
  navigationMenuTriggerStyle,
} from "@/components/ui/navigation-menu";
import { WordRotate } from "@/components/ui/word-rotate";
import { useSession } from "@/lib/hooks/use-session";
import { cn } from "@/lib/utils";
import { LoginDialog } from "./auth/login-dialog";
import { RegisterDialog } from "./auth/register-dialog";
import { LanguageSwitcher } from "./language-switcher";
import { MessagesBell } from "./messages/MessagesBell";
import { MobileMenu } from "./mobile-menu";
import { NotificationBell } from "./notifications/NotificationBell";
import { ThemeToggle } from "./theme-toggle";

export default function Header() {
  const t = useTranslations("header.nav");
  const locale = useLocale();
  const { user, isAuthenticated, isLoading, logout } = useSession();
  const [loginDialogOpen, setLoginDialogOpen] = useState(false);
  const [registerDialogOpen, setRegisterDialogOpen] = useState(false);
  const [mounted, setMounted] = useState(false);

  // Evitar hidratação mismatch
  useEffect(() => {
    setMounted(true);
  }, []);

  const links = [
    { href: `/${locale}/library`, label: "Library" },
    { href: `/${locale}/market`, label: t("market") },
    { href: `/${locale}/sobre`, label: t("about") },
    { href: `/${locale}/precos`, label: t("prices") },
    { href: `/${locale}/apoiar`, label: t("support"), highlight: true },
  ];

  const navLinks = [
    ...links,
    ...(isAuthenticated && user?.userId === 1
      ? [{ href: `/${locale}/admin`, label: "Admin" }]
      : []),
  ];

  const handleLogout = async () => {
    await logout();
  };

  return (
    <header className="sticky top-0 z-50 w-full border-b bg-background/60 backdrop-blur supports-backdrop-filter:bg-background/60">
      <div className="mx-auto flex h-16 w-full max-w-6xl items-center justify-between px-4">
        {/* Logo */}
        <div className="flex items-center gap-2">
          <Link href="/">
            <WordRotate
              words={["Tibia Trade"]}
              className="text-lg font-semibold tracking-tight hover:text-primary transition-colors"
            />
          </Link>
        </div>

        {/* Desktop Navigation */}
        <NavigationMenu className="hidden md:flex">
          <NavigationMenuList>
            {navLinks.map(({ href, label, highlight }) => (
              <NavigationMenuItem key={href}>
                <NavigationMenuLink asChild>
                  <Link
                    href={href}
                    className={cn(
                      navigationMenuTriggerStyle(),
                      "bg-transparent",
                      highlight &&
                        "bg-primary text-primary-foreground hover:bg-primary/90",
                    )}
                  >
                    {label}
                  </Link>
                </NavigationMenuLink>
              </NavigationMenuItem>
            ))}
          </NavigationMenuList>
        </NavigationMenu>

        {/* Desktop Controls */}
        <div className="hidden md:flex items-center gap-2">
          <ThemeToggle />
          <LanguageSwitcher />

          {/* Messages */}
          {mounted && isAuthenticated && <MessagesBell />}

          {/* Notifications */}
          {mounted && isAuthenticated && <NotificationBell />}
          {mounted && isAuthenticated && user?.subscriptionTier && (
            <Badge variant="outline" className="uppercase">
              {user.subscriptionTier.slug}
            </Badge>
          )}

          {/* Auth Section */}
          {!mounted ? (
            // Placeholder durante SSR para evitar mismatch
            <div className="w-20 h-8 animate-pulse bg-muted rounded" />
          ) : isLoading ? (
            <div className="w-20 h-8 animate-pulse bg-muted rounded" />
          ) : isAuthenticated && user ? (
            <DropdownMenu>
              <DropdownMenuTrigger asChild>
                <Button
                  variant="ghost"
                  className="relative h-8 w-8 rounded-full"
                >
                  <Avatar className="h-8 w-8">
                    <AvatarFallback>
                      {user.username.charAt(0).toUpperCase()}
                    </AvatarFallback>
                  </Avatar>
                </Button>
              </DropdownMenuTrigger>
              <DropdownMenuContent align="end" className="w-56">
                <DropdownMenuLabel>
                  <div className="flex flex-col space-y-1">
                    <p className="text-sm font-medium leading-none">
                      {user.username}
                    </p>
                    {user.characterName && (
                      <p className="text-xs leading-none text-primary font-medium">
                        {user.characterName}
                      </p>
                    )}
                    <p className="text-xs leading-none text-muted-foreground">
                      {user.email}
                    </p>
                  </div>
                </DropdownMenuLabel>
                <DropdownMenuSeparator />
                <DropdownMenuItem asChild>
                  <Link href={`/${locale}/perfil`} className="cursor-pointer">
                    <User className="mr-2 h-4 w-4" />
                    Perfil
                  </Link>
                </DropdownMenuItem>
                <DropdownMenuSeparator />
                <DropdownMenuItem
                  className="cursor-pointer text-destructive"
                  onClick={handleLogout}
                >
                  <LogOut className="mr-2 h-4 w-4" />
                  Sair
                </DropdownMenuItem>
              </DropdownMenuContent>
            </DropdownMenu>
          ) : (
            <div className="flex items-center gap-2">
              <Button
                variant="outline"
                onClick={() => setRegisterDialogOpen(true)}
                size="sm"
              >
                Registrar
              </Button>
              <Button onClick={() => setLoginDialogOpen(true)} size="sm">
                Entrar
              </Button>
            </div>
          )}
        </div>

        {/* Mobile Menu */}
        <div className="md:hidden">
          <MobileMenu links={navLinks} />
        </div>
      </div>

      {/* Login Dialog */}
      <LoginDialog open={loginDialogOpen} onOpenChange={setLoginDialogOpen} />

      {/* Register Dialog */}
      <RegisterDialog
        open={registerDialogOpen}
        onOpenChange={setRegisterDialogOpen}
      />
    </header>
  );
}