"use client";

import { useState, useEffect, useRef, useCallback } from "react";
import Link from "next/link";
import { useRouter } from "next/navigation";
import { Volume2, VolumeX, Trophy, Star, Award, ShoppingBag } from "lucide-react";
import { useSound } from "@/hooks/useSound";
import { getStoredPlayer } from "@/lib/player-store";
import { getPlayerStarCoins } from "@/lib/supabase/queries";
import { useCosmeticContext } from "@/components/cosmetics/CosmeticProvider";

/**
 * Fixed top navigation header for Triviaverse.
 * Shows the logo (links to home), optionally displays the player name,
 * coin balance, trophy room link, shop link, a Leaderboard nav link,
 * and a mute/unmute toggle when showNav is true.
 */
interface HeaderProps {
  playerName?: string;
  showNav?: boolean;
}

export function Header({ playerName, showNav = true }: HeaderProps) {
  const { muted, toggleMute, play } = useSound();
  const router = useRouter();
  const [coins, setCoins] = useState<number | null>(null);
  const { equipped } = useCosmeticContext();
  const hasTitleEffect = equipped.title_effect !== null;

  // Easter egg: triple-click logo within 1.5s → /admin
  const clickCountRef = useRef(0);
  const clickTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null);
  const handleLogoClick = useCallback((e: React.MouseEvent) => {
    e.preventDefault();
    clickCountRef.current += 1;
    if (clickTimerRef.current) clearTimeout(clickTimerRef.current);
    if (clickCountRef.current >= 3) {
      clickCountRef.current = 0;
      router.push("/admin");
      return;
    }
    clickTimerRef.current = setTimeout(() => {
      if (clickCountRef.current === 1) router.push("/");
      clickCountRef.current = 0;
    }, 400);
  }, [router]);

  // Easter egg: TRIVIAMASTER name flag
  const [isMaster] = useState(
    () =>
      typeof window !== "undefined" &&
      localStorage.getItem("triviamaster_unlocked") === "1",
  );

  useEffect(() => {
    const player = getStoredPlayer();
    if (player?.id) {
      getPlayerStarCoins(player.id).then(setCoins);
    }
  }, []);

  return (
    <header className="fixed top-0 left-0 right-0 z-50 border-b border-white/10 bg-navy/80 backdrop-blur-md shadow-[0_1px_0_rgba(233,30,140,0.2)]">
      <div className="mx-auto flex h-16 max-w-6xl items-center justify-between px-4">
        {/* Logo — single click goes to /, triple-click goes to /admin */}
        <button
          onClick={handleLogoClick}
          className={`bg-clip-text text-xl font-bold text-transparent ${
            hasTitleEffect ? "" : "bg-gradient-to-r from-magenta to-cyan"
          }`}
          style={hasTitleEffect ? { backgroundImage: "var(--cosmetic-title-gradient)" } : undefined}
        >
          TRIVIAVERSE
        </button>

        {/* Right section */}
        {showNav && (
          <nav className="flex items-center gap-4">
            {playerName && (
              <span className="text-sm text-white/60">
                Playing as{" "}
                <span
                  className="font-semibold"
                  style={
                    isMaster
                      ? {
                          background: "linear-gradient(90deg, #dc2626, #7f1d1d, #dc2626)",
                          WebkitBackgroundClip: "text",
                          WebkitTextFillColor: "transparent",
                          backgroundClip: "text",
                        }
                      : { color: "white" }
                  }
                >
                  {playerName}
                </span>
              </span>
            )}

            {/* Coin balance */}
            {coins !== null && (
              <span className="flex items-center gap-1 text-sm font-semibold text-gold">
                <Star size={14} />
                {coins.toLocaleString()}
              </span>
            )}

            {/* Trophy room link */}
            <Link
              href="/trophies"
              className="flex items-center justify-center px-2 py-1 rounded text-white/80 hover:bg-white/10 hover:text-white transition-colors"
              aria-label="Trophy Room"
            >
              <Award size={20} />
            </Link>

            {/* Shop link */}
            <Link
              href="/shop"
              className="flex items-center justify-center px-2 py-1 rounded text-white/80 hover:bg-white/10 hover:text-white transition-colors"
              aria-label="Shop"
            >
              <ShoppingBag size={20} />
            </Link>

            <Link
              href="/leaderboard"
              className="flex items-center gap-1.5 rounded-xl border border-white/10 bg-white/5 px-4 py-2 text-sm text-white/80 transition-colors hover:bg-white/10 hover:text-white"
            >
              <Trophy size={16} />
              Leaderboard
            </Link>
            <button
              onClick={() => {
                toggleMute();
                play("click");
              }}
              className="flex items-center justify-center px-2 py-1 rounded text-white/80 hover:bg-white/10 hover:text-white transition-colors"
              aria-label={muted ? "Unmute" : "Mute"}
            >
              {muted ? <VolumeX size={20} /> : <Volume2 size={20} />}
            </button>
          </nav>
        )}
      </div>
    </header>
  );
}