import { useStore } from '@nanostores/react';
import { $appSettings, updateAppSettings } from '../stores/appSettings';
import { VALUE_MODES, ValueMode } from '../utils/constants';
import {
  uiState,
  toggleMobileMenu,
  showHelp,
  toggleUI,
  toggleShaderLibrary,
} from '../stores/ui';
import { $shader, setShaderCode } from '../stores/shader';
import { $input } from '../stores/input';
import { FakeShader } from '../FakeShader';
import { useAudio } from '../hooks/useAudio';
import { LucideIcon } from '../hooks/useLucideIcon';

function getValueModeLabel(mode: string): string {
  const labels: Record<string, string> = {
    integer: 'Integer (0-255)',
    float: 'Float (0.0-1.0)',
    polar: 'Polar (angle-based)',
    distance: 'Distance (radial)',
    wave: 'Wave (ripple)',
    fractal: 'Fractal (recursive)',
    cellular: 'Cellular (automata)',
    noise: 'Noise (perlin-like)',
    warp: 'Warp (space deformation)',
    flow: 'Flow (fluid dynamics)',
  };
  return labels[mode] || mode;
}

export function TopBar() {
  const settings = useStore($appSettings);
  const ui = useStore(uiState);
  const shader = useStore($shader);
  const input = useStore($input);
  const { setupAudio, disableAudio } = useAudio();

  const handleFullscreen = () => {
    if (!document.fullscreenElement) {
      document.documentElement.requestFullscreen();
    } else {
      document.exitFullscreen();
    }
  };

  const handleRandom = () => {
    const randomCode = FakeShader.generateRandomCode();
    setShaderCode(randomCode);
  };

  const handleShare = () => {
    const shareData = {
      code: shader.code,
      resolution: settings.resolution,
      fps: settings.fps,
      renderMode: settings.renderMode,
      valueMode: settings.valueMode,
      uiOpacity: settings.uiOpacity,
    };

    const encoded = btoa(JSON.stringify(shareData));
    window.location.hash = encoded;

    navigator.clipboard
      .writeText(window.location.href)
      .then(() => {
        console.log('URL copied to clipboard');
      })
      .catch(() => {
        console.log('Copy failed');
      });
  };

  const handleExportPNG = () => {
    const canvas = document.getElementById('canvas') as HTMLCanvasElement;
    if (canvas) {
      const link = document.createElement('a');
      link.download = `bitfielder-${Date.now()}.png`;
      link.href = canvas.toDataURL('image/png');
      link.click();
    }
  };

  const handleAudioToggle = async () => {
    if (input.audioEnabled) {
      disableAudio();
    } else {
      await setupAudio();
    }
  };

  return (
    <div id="topbar" className={ui.uiVisible ? '' : 'hidden'}>
      <div className="title">Bitfielder</div>
      <div className="controls">
        <div className="controls-desktop">
          <label
            style={{ color: '#ccc', fontSize: '12px', marginRight: '10px' }}
          >
            Resolution:
            <select
              value={settings.resolution}
              onChange={(e) =>
                updateAppSettings({ resolution: parseInt(e.target.value) })
              }
              style={{
                background: 'rgba(255,255,255,0.1)',
                border: '1px solid #555',
                color: '#fff',
                padding: '4px',
                borderRadius: '4px',
              }}
            >
              <option value="1">Full (1x)</option>
              <option value="2">Half (2x)</option>
              <option value="4">Quarter (4x)</option>
              <option value="8">Eighth (8x)</option>
              <option value="16">Sixteenth (16x)</option>
              <option value="32">Thirty-second (32x)</option>
            </select>
          </label>

          <label
            style={{ color: '#ccc', fontSize: '12px', marginRight: '10px' }}
          >
            FPS:
            <select
              value={settings.fps}
              onChange={(e) =>
                updateAppSettings({ fps: parseInt(e.target.value) })
              }
              style={{
                background: 'rgba(255,255,255,0.1)',
                border: '1px solid #555',
                color: '#fff',
                padding: '4px',
                borderRadius: '4px',
              }}
            >
              <option value="15">15 FPS</option>
              <option value="30">30 FPS</option>
              <option value="60">60 FPS</option>
            </select>
          </label>

          <label
            style={{ color: '#ccc', fontSize: '12px', marginRight: '10px' }}
          >
            Value Mode:
            <select
              value={settings.valueMode}
              onChange={(e) => updateAppSettings({ valueMode: e.target.value as ValueMode })}
              style={{
                background: 'rgba(255,255,255,0.1)',
                border: '1px solid #555',
                color: '#fff',
                padding: '4px',
                borderRadius: '4px',
              }}
            >
              {VALUE_MODES.map((mode) => (
                <option key={mode} value={mode}>
                  {getValueModeLabel(mode)}
                </option>
              ))}
            </select>
          </label>

          <label
            style={{ color: '#ccc', fontSize: '12px', marginRight: '10px' }}
          >
            Render Mode:
            <select
              value={settings.renderMode}
              onChange={(e) =>
                updateAppSettings({ renderMode: e.target.value })
              }
              style={{
                background: 'rgba(255,255,255,0.1)',
                border: '1px solid #555',
                color: '#fff',
                padding: '4px',
                borderRadius: '4px',
              }}
            >
              <option value="classic">Classic</option>
              <option value="grayscale">Grayscale</option>
              <option value="red">Red Channel</option>
              <option value="green">Green Channel</option>
              <option value="blue">Blue Channel</option>
              <option value="rainbow">Rainbow</option>
              <option value="thermal">Thermal</option>
              <option value="neon">Neon</option>
              <option value="sunset">Sunset</option>
              <option value="ocean">Ocean</option>
              <option value="forest">Forest</option>
              <option value="copper">Copper</option>
              <option value="dithered">Dithered</option>
              <option value="palette">Palette</option>
            </select>
          </label>

          <label
            style={{ color: '#ccc', fontSize: '12px', marginRight: '10px' }}
          >
            UI Opacity:
            <input
              type="range"
              min="10"
              max="100"
              value={Math.round((settings.uiOpacity ?? 0.3) * 100)}
              onChange={(e) =>
                updateAppSettings({ uiOpacity: parseInt(e.target.value) / 100 })
              }
              style={{ width: '80px', verticalAlign: 'middle' }}
            />
            <span style={{ fontSize: '11px' }}>
              {Math.round((settings.uiOpacity ?? 0.3) * 100)}%
            </span>
          </label>

          <button id="help-btn" onClick={showHelp}>
            <LucideIcon name="help" />
          </button>
          <button id="fullscreen-btn" onClick={handleFullscreen}>
            <LucideIcon name="fullscreen" />
          </button>
          <button id="hide-ui-btn" onClick={toggleUI}>
            <LucideIcon name="hide" />
          </button>
          <button id="random-btn" onClick={handleRandom}>
            <LucideIcon name="random" />
          </button>
          <button id="audio-btn" onClick={handleAudioToggle}>
            <LucideIcon
              name={input.audioEnabled ? 'microphone' : 'microphone-off'}
            />
          </button>
          <button id="share-btn" onClick={handleShare}>
            <LucideIcon name="share" />
          </button>
          <button id="export-png-btn" onClick={handleExportPNG}>
            <LucideIcon name="export" />
          </button>
        </div>

        <div className="controls-mobile">
          <button
            className="icon-button"
            aria-label="Shader Library"
            onClick={toggleShaderLibrary}
          >
            <LucideIcon name="library" />
          </button>
          <button
            className="icon-button"
            aria-label="Random"
            onClick={handleRandom}
          >
            <LucideIcon name="random" />
          </button>
          <button
            className="icon-button"
            aria-label="Hide UI"
            onClick={toggleUI}
          >
            <LucideIcon name="hide" />
          </button>
          <button
            className="icon-button"
            aria-label="Menu"
            onClick={toggleMobileMenu}
          >
            <LucideIcon name={ui.mobileMenuOpen ? 'close' : 'menu'} />
          </button>
        </div>
      </div>
    </div>
  );
}