import {
  X,
  Settings,
  Keyboard,
  Monitor,
  Shield,
  HardDrive,
  Info,
} from "lucide-react";
import { useAppStore } from "../store";
import { useState } from "react";

type Tab =
  | "general"
  | "appearance"
  | "shortcuts"
  | "storage"
  | "privacy"
  | "about";

export const SettingsPanel = () => {
  const { isSettingsOpen, setIsSettingsOpen } = useAppStore();
  const [activeTab, setActiveTab] = useState<Tab>("general");

  const tabs: { id: Tab; label: string; icon: React.ReactNode }[] = [
    { id: "general", label: "General", icon: <Settings size={16} /> },
    { id: "appearance", label: "Appearance", icon: <Monitor size={16} /> },
    {
      id: "shortcuts",
      label: "Keyboard Shortcuts",
      icon: <Keyboard size={16} />,
    },
    { id: "storage", label: "Storage & Data", icon: <HardDrive size={16} /> },
    { id: "privacy", label: "Privacy & Security", icon: <Shield size={16} /> },
    { id: "about", label: "About", icon: <Info size={16} /> },
  ];

  return (
    <div
      className={`absolute right-0 top-0 h-full w-[600px] z-40 bg-panel-bg shadow-2xl border-l border-panel-border flex flex-col transform transition-transform duration-500 ease-[cubic-bezier(0.19,1,0.22,1)] ${isSettingsOpen ? "translate-x-0" : "translate-x-full"}`}
    >
      <div className="h-14 border-b border-white/5 flex items-center justify-between px-6 bg-black/20 shrink-0">
        <h2 className="text-ui-primary font-medium flex items-center gap-2">
          <Settings size={16} className="text-ui-secondary" /> Settings
        </h2>
        <button
          onClick={() => setIsSettingsOpen(false)}
          className="text-ui-secondary hover:text-ui-primary p-1 rounded-md hover:bg-white/5 transition-colors"
        >
          <X size={18} />
        </button>
      </div>

      <div className="flex flex-1 overflow-hidden">
        {/* Sidebar */}
        <div className="w-[200px] bg-black/10 border-r border-white/5 p-4 flex flex-col gap-1 overflow-y-auto custom-scrollbar shrink-0">
          {tabs.map((tab) => (
            <button
              key={tab.id}
              onClick={() => setActiveTab(tab.id)}
              className={`flex items-center gap-3 px-3 py-2 rounded-lg text-sm transition-colors text-left ${activeTab === tab.id ? "bg-accent-blue text-white font-medium" : "text-ui-secondary hover:text-ui-primary hover:bg-white/5"}`}
            >
              {tab.icon}
              {tab.label}
            </button>
          ))}
        </div>

        {/* Content */}
        <div className="flex-1 p-8 overflow-y-auto custom-scrollbar text-ui-primary text-sm">
            <div
              key={activeTab}
              className="transition-all duration-200"
            >
              {activeTab === "general" && (
                <div className="space-y-8">
                  <section>
                    <h3 className="text-base font-medium mb-4 text-white">
                      Startup & Behavior
                    </h3>
                    <div className="space-y-4">
                      <label className="flex items-center justify-between group cursor-pointer">
                        <div>
                          <div className="font-medium">
                            Open last board on startup
                          </div>
                          <div className="text-ui-secondary text-xs mt-0.5">
                            Automatically load the most recently used board
                          </div>
                        </div>
                        <div className="w-10 h-6 bg-accent-blue rounded-full relative transition-colors">
                          <div className="absolute right-1 top-1 w-4 h-4 bg-white rounded-full shadow" />
                        </div>
                      </label>
                      <label className="flex items-center justify-between group cursor-pointer">
                        <div>
                          <div className="font-medium">
                            Hardware Acceleration
                          </div>
                          <div className="text-ui-secondary text-xs mt-0.5">
                            Use GPU to render canvas (requires restart)
                          </div>
                        </div>
                        <div className="w-10 h-6 bg-accent-blue rounded-full relative transition-colors">
                          <div className="absolute right-1 top-1 w-4 h-4 bg-white rounded-full shadow" />
                        </div>
                      </label>
                    </div>
                  </section>
                </div>
              )}

              {activeTab === "appearance" && (
                <div className="space-y-8">
                  <section>
                    <h3 className="text-base font-medium mb-4 text-white">
                      Theme
                    </h3>
                    <div className="grid grid-cols-2 gap-4">
                      <div className="border border-accent-blue bg-black/20 p-4 rounded-lg cursor-pointer">
                        <div className="w-full h-20 bg-[#1C1C1E] rounded mb-3 border border-panel-border overflow-hidden flex">
                          <div className="w-1/3 bg-[#2A2A2E] border-r border-[#3A3A3E]" />
                        </div>
                        <div className="text-center font-medium">
                          Dark (Default)
                        </div>
                      </div>
                      <div className="border border-white/10 bg-black/20 p-4 rounded-lg cursor-pointer opacity-50 hover:opacity-100 transition-opacity">
                        <div className="w-full h-20 bg-gray-100 rounded mb-3 border border-gray-300 overflow-hidden flex">
                          <div className="w-1/3 bg-gray-200 border-r border-gray-300" />
                        </div>
                        <div className="text-center font-medium">Light</div>
                      </div>
                    </div>
                  </section>
                  <section>
                    <h3 className="text-base font-medium mb-4 text-white">
                      Canvas
                    </h3>
                    <div className="space-y-4">
                      <label className="flex items-center justify-between group cursor-pointer">
                        <div>
                          <div className="font-medium">Show grid</div>
                          <div className="text-ui-secondary text-xs mt-0.5">
                            Display a subtle dot grid on the canvas
                          </div>
                        </div>
                        <div className="w-10 h-6 bg-white/10 rounded-full relative transition-colors">
                          <div className="absolute left-1 top-1 w-4 h-4 bg-ui-secondary rounded-full shadow" />
                        </div>
                      </label>
                    </div>
                  </section>
                </div>
              )}

              {activeTab === "shortcuts" && (
                <div className="space-y-6">
                  <section>
                    <h3 className="text-base font-medium mb-4 text-white">
                      Global Shortcuts
                    </h3>
                    <div className="space-y-2">
                      {[
                        { action: "Toggle Browser Panel", key: "B" },
                        { action: "Toggle Library Panel", key: "L" },
                        { action: "Open Settings", key: "Ctrl + ," },
                        { action: "Pan Canvas", key: "Space + Drag" },
                        { action: "Zoom Canvas", key: "Mouse Scroll" },
                        { action: "Undo", key: "Ctrl + Z" },
                        { action: "Redo", key: "Ctrl + Shift + Z" },
                      ].map((kb) => (
                        <div
                          key={kb.action}
                          className="flex items-center justify-between py-2 border-b border-white/5"
                        >
                          <span className="text-ui-secondary">{kb.action}</span>
                          <span className="px-2 py-1 bg-black/30 border border-white/10 rounded text-xs font-mono text-ui-primary">
                            {kb.key}
                          </span>
                        </div>
                      ))}
                    </div>
                  </section>
                  <div className="text-xs text-ui-secondary bg-accent-blue/10 text-accent-blue p-3 rounded-lg flex items-center gap-2">
                    <Info size={14} /> Custom shortcuts are planned for a future
                    update.
                  </div>
                </div>
              )}

              {activeTab === "storage" && (
                <div className="space-y-8">
                  <section>
                    <h3 className="text-base font-medium mb-4 text-white">
                      Local Library
                    </h3>
                    <div className="space-y-4">
                      <div className="bg-black/20 p-4 rounded-lg border border-white/5">
                        <div className="flex justify-between items-center mb-2">
                          <div className="font-medium text-white">
                            Image Storage Mode
                          </div>
                          <span className="text-xs font-medium text-accent-blue bg-accent-blue/10 px-2 py-0.5 rounded">
                            Embedded
                          </span>
                        </div>
                        <p className="text-ui-secondary text-xs">
                          Images are copied into the .refstudio save archive.
                          Makes boards easier to share but increases file size.
                        </p>
                      </div>
                      <button className="w-full py-2 bg-white/5 hover:bg-white/10 rounded-lg border border-white/10 transition-colors text-sm font-medium">
                        Clear Image Cache
                      </button>
                    </div>
                  </section>
                  <section>
                    <h3 className="text-base font-medium mb-4 text-white text-accent-amber">
                      Danger Zone
                    </h3>
                    <div className="border border-accent-amber/30 rounded-lg p-4 bg-accent-amber/5">
                      <div className="mb-3">
                        <div className="font-medium text-accent-amber">
                          Reset All Application Data
                        </div>
                        <div className="text-ui-secondary text-xs mt-1">
                          This will permanently delete all local boards,
                          settings, and library tags. This action cannot be
                          undone.
                        </div>
                      </div>
                      <button
                        className="bg-accent-amber text-black font-semibold px-4 py-2 rounded text-xs hover:bg-accent-amber/90 transition-colors"
                        onClick={() => {
                          if (
                            confirm(
                              "Are you sure you want to delete all data? This cannot be undone.",
                            )
                          ) {
                            localStorage.clear();
                            window.location.reload();
                          }
                        }}
                      >
                        Factory Reset
                      </button>
                    </div>
                  </section>
                </div>
              )}

              {activeTab === "privacy" && (
                <div className="space-y-8">
                  <section>
                    <h3 className="text-base font-medium mb-4 text-white">
                      Privacy Preferences
                    </h3>
                    <p className="text-ui-secondary text-xs leading-relaxed mb-6">
                      Refstudio is designed to be local-first. We believe your
                      references belong to you. We do not track your usage,
                      collect telemetry, or analyze your boards.
                    </p>
                    <div className="space-y-4">
                      <label className="flex items-center justify-between group cursor-pointer">
                        <div>
                          <div className="font-medium">
                            Check for updates automatically
                          </div>
                          <div className="text-ui-secondary text-xs mt-0.5">
                            Pings our server once a day to check for new
                            versions
                          </div>
                        </div>
                        <div className="w-10 h-6 bg-accent-blue rounded-full relative transition-colors">
                          <div className="absolute right-1 top-1 w-4 h-4 bg-white rounded-full shadow" />
                        </div>
                      </label>
                      <label className="flex items-center justify-between group cursor-pointer opacity-50">
                        <div>
                          <div className="font-medium">
                            Share anonymous crash reports
                          </div>
                          <div className="text-ui-secondary text-xs mt-0.5">
                            Help us fix bugs by sending stack traces when the
                            app crashes
                          </div>
                        </div>
                        <div className="w-10 h-6 bg-white/10 rounded-full relative transition-colors">
                          <div className="absolute left-1 top-1 w-4 h-4 bg-ui-secondary rounded-full shadow" />
                        </div>
                      </label>
                    </div>
                  </section>
                </div>
              )}

              {activeTab === "about" && (
                <div className="space-y-8 flex flex-col items-center text-center mt-12">
                  <div className="w-20 h-20 bg-gradient-to-br from-[#1C1C1E] to-[#2A2A2E] border border-[#3A3A3E] rounded-2xl flex items-center justify-center shadow-2xl mb-4">
                    <Monitor size={32} className="text-accent-blue" />
                  </div>
                  <div>
                    <h1 className="text-2xl font-semibold text-white">
                      Refstudio
                    </h1>
                    <p className="text-ui-secondary mt-1">Version 1.0.0-beta</p>
                  </div>
                  <div className="max-w-xs text-ui-secondary text-sm leading-relaxed">
                    The zero-friction reference board for visual artists.
                    Local-first, private by default, and uncompromisingly fast.
                  </div>
                  <div className="flex gap-4 mt-4">
                    <a
                      href="#"
                      className="text-accent-blue hover:underline text-sm font-medium"
                    >
                      Website
                    </a>
                    <a
                      href="#"
                      className="text-accent-blue hover:underline text-sm font-medium"
                    >
                      Release Notes
                    </a>
                    <a
                      href="#"
                      className="text-accent-blue hover:underline text-sm font-medium"
                    >
                      License
                    </a>
                  </div>
                </div>
              )}
            </div>
        </div>
      </div>
    </div>
  );
};