import React from 'react';

interface HeaderProps {
  isConnected: boolean;
  gameStarted: boolean;
  onStartGame: () => void;
  onOpenRegister: () => void;
  onQuickSpawn: () => void;
  onResetBoard: () => void;
  playerCount: number;
  isConcluded?: boolean;
  onOpenScoreboard?: () => void;
}

export const Header: React.FC<HeaderProps> = ({
  isConnected,
  gameStarted,
  onStartGame,
  onOpenRegister,
  onQuickSpawn,
  onResetBoard,
  playerCount,
  isConcluded,
  onOpenScoreboard,
}) => {
  return (
    <header className="h-16 border-b border-slate-800 bg-slate-900/90 backdrop-blur px-6 flex items-center justify-between z-10">
      {/* Brand & Stats */}
      <div className="flex items-center gap-6">
        <div className="flex items-center gap-3">
          <div className="w-8 h-8 rounded-lg bg-gradient-to-tr from-sky-500 to-indigo-600 flex items-center justify-center font-black text-white text-base shadow-lg shadow-sky-500/20">
            W
          </div>
          <div>
            <h1 className="text-base font-bold tracking-tight text-white flex items-center gap-2">
              botWebWars
              <span className="text-[10px] uppercase font-mono px-1.5 py-0.5 rounded bg-sky-950 text-sky-400 border border-sky-800">
                v1.0
              </span>
            </h1>
            <p className="text-[11px] text-slate-400 font-mono">
              64×64 Grid Arena • Coords (0,0) to (64,64)
            </p>
          </div>
        </div>

        {/* Live status badge */}
        <div className="flex items-center gap-2 px-2.5 py-1 rounded-full bg-slate-800 border border-slate-700 text-xs font-mono">
          <span
            className={`w-2 h-2 rounded-full ${
              isConnected ? 'bg-emerald-400 shadow-[0_0_8px_#34d399]' : 'bg-amber-400 animate-ping'
            }`}
          />
          <span className={isConnected ? 'text-slate-300' : 'text-amber-300'}>
            {isConnected ? 'LIVE SYNC' : 'CONNECTING...'}
          </span>
        </div>

        {/* Game Phase Badge */}
        {!isConcluded && (
          <div className="flex items-center gap-1.5 px-3 py-1 rounded-full bg-slate-800 border border-slate-700 text-xs font-mono">
            {gameStarted ? (
              <span className="flex items-center gap-1.5 text-emerald-400 font-semibold">
                <span className="w-2 h-2 rounded-full bg-emerald-400 animate-pulse" />
                GAME IN PROGRESS
              </span>
            ) : (
              <span className="flex items-center gap-1.5 text-amber-300 font-medium">
                <span className="w-2 h-2 rounded-full bg-amber-400 animate-ping" />
                LOBBY (WAITING TO START)
              </span>
            )}
          </div>
        )}

        {/* Game concluded banner tag */}
        {isConcluded && (
          <div className="flex items-center gap-1.5 px-3 py-1 rounded-full bg-amber-500/20 border border-amber-400 text-amber-300 text-xs font-bold animate-pulse">
            <span>🏆</span> GAME CONCLUDED
          </div>
        )}
      </div>

      {/* Action Buttons */}
      <div className="flex items-center gap-3">
        {/* Start Game Button (Visible during Lobby) */}
        {!gameStarted && !isConcluded && (
          <button
            onClick={onStartGame}
            disabled={playerCount === 0}
            className={`text-xs font-bold px-4 py-1.5 rounded-lg flex items-center gap-1.5 shadow-lg transition-all ${
              playerCount > 0
                ? 'bg-gradient-to-r from-emerald-500 to-teal-600 hover:from-emerald-400 hover:to-teal-500 text-white shadow-emerald-500/30 animate-pulse cursor-pointer ring-1 ring-emerald-400'
                : 'bg-slate-800 text-slate-500 border border-slate-700 cursor-not-allowed'
            }`}
            title={playerCount === 0 ? 'Spawn or register bots before starting' : 'Start the game!'}
          >
            <span>▶</span> Start Game ({playerCount} {playerCount === 1 ? 'Bot' : 'Bots'})
          </button>
        )}

        {isConcluded && onOpenScoreboard && (
          <button
            onClick={onOpenScoreboard}
            className="text-xs font-bold text-amber-950 px-3.5 py-1.5 rounded-lg bg-gradient-to-r from-amber-400 to-yellow-300 hover:from-amber-300 hover:to-yellow-200 shadow-lg shadow-amber-400/30 flex items-center gap-1.5 transition-all"
          >
            <span>🏆</span> Final Scoreboard
          </button>
        )}

        <a
          href="/docs"
          target="_blank"
          rel="noopener noreferrer"
          className="text-xs font-mono text-slate-400 hover:text-sky-400 transition-colors px-2.5 py-1.5 rounded-lg border border-slate-800 hover:border-slate-700 bg-slate-950/40"
          title="Open FastAPI Swagger API Docs"
        >
          API Docs ↗
        </a>

        <button
          onClick={onResetBoard}
          className="text-xs font-medium text-slate-400 hover:text-red-400 transition-colors px-3 py-1.5 rounded-lg border border-slate-800 hover:border-red-900/60 bg-slate-950/40"
          title="Regenerate map terrain and clear all players"
        >
          Recreate Layout
        </button>

        <button
          onClick={onQuickSpawn}
          className="text-xs font-medium text-slate-200 hover:text-white transition-all px-3.5 py-1.5 rounded-lg bg-slate-800 hover:bg-slate-700 border border-slate-700 shadow flex items-center gap-1.5"
        >
          <span>🎲</span> Quick Spawn Bot
        </button>

        <button
          onClick={onOpenRegister}
          className="text-xs font-semibold text-white transition-all px-4 py-1.5 rounded-lg bg-gradient-to-r from-sky-500 to-indigo-600 hover:from-sky-400 hover:to-indigo-500 shadow-lg shadow-sky-500/25 flex items-center gap-1.5"
        >
          <span>+</span> Register Player
        </button>
      </div>
    </header>
  );
};