"use client";

import { useState } from "react";
import {
  Play,
  Square,
  Move,
  RotateCcw,
  Maximize,
  MousePointer,
  Undo2,
  Redo2,
  Eye,
  User,
} from "lucide-react";
import { useEditorStore } from "@/lib/store";
import { SceneDropdown } from "./scene-dropdown";

export function Toolbar() {
  const {
    transformMode,
    setTransformMode,
    isPlaying,
    setIsPlaying,
    canUndo,
    canRedo,
    undo,
    redo,
    viewMode,
    setViewMode,
  } = useEditorStore();

  const [moreOpen, setMoreOpen] = useState(false);

  return (
    <div
      className="relative z-20 flex items-center justify-between px-2 sm:px-3 border-b border-[#1e1e1e] bg-[#0f0f0f] shrink-0"
      style={{ minHeight: 44, paddingTop: "env(safe-area-inset-top, 0px)" }}
    >
      {/* Left: Transform modes */}
      <div className="flex items-center z-10">
        {!isPlaying && (
          <>
            {/* Mobile: collapsed transform dropdown */}
            <div className="relative flex items-center sm:hidden">
              <ToolButton
                icon={
                  transformMode === "select" ? (
                    <MousePointer size={16} />
                  ) : transformMode === "translate" ? (
                    <Move size={16} />
                  ) : transformMode === "rotate" ? (
                    <RotateCcw size={16} />
                  ) : (
                    <Maximize size={16} />
                  )
                }
                active
                onClick={() => setMoreOpen(!moreOpen)}
                title="Transform mode"
                size="mobile"
              />
              {moreOpen && (
                <>
                  <div
                    className="fixed inset-0 z-40"
                    onClick={() => setMoreOpen(false)}
                  />
                  <div className="absolute top-full left-0 mt-1 bg-[#1a1a1a] border border-[#2a2a2a] rounded-lg shadow-xl z-50 p-1 flex flex-col gap-0.5 min-w-[140px]">
                    {(
                      [
                        {
                          mode: "select" as const,
                          icon: MousePointer,
                          label: "Select",
                        },
                        {
                          mode: "translate" as const,
                          icon: Move,
                          label: "Move",
                        },
                        {
                          mode: "rotate" as const,
                          icon: RotateCcw,
                          label: "Rotate",
                        },
                        {
                          mode: "scale" as const,
                          icon: Maximize,
                          label: "Scale",
                        },
                      ] as const
                    ).map(({ mode, icon: Icon, label }) => (
                      <button
                        key={mode}
                        onClick={() => {
                          setTransformMode(mode);
                          setMoreOpen(false);
                        }}
                        className={`flex items-center gap-2.5 px-3 py-2.5 rounded text-xs transition-colors ${
                          transformMode === mode
                            ? "bg-white/10 text-white"
                            : "text-[#888] active:bg-white/5"
                        }`}
                      >
                        <Icon size={14} />
                        {label}
                      </button>
                    ))}
                  </div>
                </>
              )}
              <ToolButton
                icon={<Undo2 size={16} />}
                onClick={undo}
                disabled={!canUndo}
                title="Undo"
                size="mobile"
              />
              <ToolButton
                icon={<Redo2 size={16} />}
                onClick={redo}
                disabled={!canRedo}
                title="Redo"
                size="mobile"
              />
            </div>

            {/* Desktop: individual transform buttons */}
            <div className="hidden sm:flex items-center gap-1">
              <ToolButton
                icon={<MousePointer size={14} />}
                active={transformMode === "select"}
                onClick={() => setTransformMode("select")}
                title="Select (Q)"
              />
              <ToolButton
                icon={<Move size={14} />}
                active={transformMode === "translate"}
                onClick={() => setTransformMode("translate")}
                title="Translate (W)"
              />
              <ToolButton
                icon={<RotateCcw size={14} />}
                active={transformMode === "rotate"}
                onClick={() => setTransformMode("rotate")}
                title="Rotate (E)"
              />
              <ToolButton
                icon={<Maximize size={14} />}
                active={transformMode === "scale"}
                onClick={() => setTransformMode("scale")}
                title="Scale (R)"
              />
              <div className="w-px h-5 bg-[#2a2a2a] mx-1" />
              <ToolButton
                icon={<Undo2 size={14} />}
                onClick={undo}
                disabled={!canUndo}
                title="Undo (Ctrl+Z)"
              />
              <ToolButton
                icon={<Redo2 size={14} />}
                onClick={redo}
                disabled={!canRedo}
                title="Redo (Ctrl+Shift+Z)"
              />
            </div>
          </>
        )}
      </div>

      {/* Center: Scene selector (absolutely centered) */}
      <div
        className="absolute inset-0 flex items-center justify-center pointer-events-none"
        style={{ paddingTop: "env(safe-area-inset-top, 0px)" }}
      >
        <div className="pointer-events-auto">
          {!isPlaying && <SceneDropdown />}
        </div>
      </div>

      {/* Right: Play/View controls */}
      <div className="flex items-center z-10">
        {isPlaying && (
          <>
            {/* Mobile view mode buttons */}
            <div className="flex items-center sm:hidden">
              <ToolButton
                icon={<Eye size={16} />}
                active={viewMode === "first-person"}
                onClick={() => setViewMode("first-person")}
                title="First Person"
                size="mobile"
              />
              <ToolButton
                icon={<User size={16} />}
                active={viewMode === "third-person"}
                onClick={() => setViewMode("third-person")}
                title="Third Person"
                size="mobile"
              />
            </div>
            {/* Desktop view mode buttons */}
            <div className="hidden sm:flex items-center">
              <ToolButton
                icon={<Eye size={14} />}
                active={viewMode === "first-person"}
                onClick={() => setViewMode("first-person")}
                title="First Person"
              />
              <ToolButton
                icon={<User size={14} />}
                active={viewMode === "third-person"}
                onClick={() => setViewMode("third-person")}
                title="Third Person"
              />
              <div className="w-px h-5 bg-[#2a2a2a] mx-1" />
            </div>
          </>
        )}
        <button
          onClick={() => setIsPlaying(!isPlaying)}
          className="flex items-center gap-1 sm:gap-1.5 px-2.5 sm:px-3 py-1.5 sm:py-1 rounded text-xs font-medium transition-colors bg-white/10 hover:bg-white/20 active:bg-white/20 text-white"
        >
          {isPlaying ? <Square size={12} /> : <Play size={12} />}
          {isPlaying ? "Stop" : "Play"}
        </button>
      </div>
    </div>
  );
}

function ToolButton({
  icon,
  active,
  onClick,
  disabled,
  title,
  size,
}: {
  icon: React.ReactNode;
  active?: boolean;
  onClick: () => void;
  disabled?: boolean;
  title?: string;
  size?: "mobile" | "desktop";
}) {
  const isMobileSize = size === "mobile";
  return (
    <button
      onClick={onClick}
      disabled={disabled}
      title={title}
      className={`${isMobileSize ? "p-2.5 min-w-[44px] min-h-[44px]" : "p-1.5"} rounded transition-colors flex items-center justify-center ${
        active
          ? isMobileSize
            ? "text-white"
            : "bg-white/10 text-white"
          : disabled
            ? "text-[#444] cursor-not-allowed"
            : "text-[#888] hover:text-white hover:bg-white/5 active:bg-white/10"
      }`}
    >
      {icon}
    </button>
  );
}