// D.intelligence Design System — Tweaks app
// Lets viewers explore alternative visual treatments for the brand system.

const TWEAK_DEFAULTS = /*EDITMODE-BEGIN*/{
  "coverBg": "beige",
  "accent": "olive",
  "density": "regular",
  "motif": "all",
  "showGrid": false,
  "monoTone": false
}/*EDITMODE-END*/;

function applyTweaks(t) {
  const root = document.documentElement.style;

  // Cover background tone
  const coverBgMap = {
    beige:  { bg: '#E5E1D2', text: '#231815' },
    brown:  { bg: '#231815', text: '#E5E1D2' },
    white:  { bg: '#FFFFFF', text: '#231815' },
    olive:  { bg: '#CEDC00', text: '#231815' },
  };
  const cov = coverBgMap[t.coverBg] || coverBgMap.beige;
  document.querySelectorAll('section.s-cover, section.s-section').forEach(s => {
    // only flip sections that don't already have inline background:var(--white) (content slides)
    const inline = s.getAttribute('style') || '';
    if (!inline.includes('background:var(--white)')) {
      s.style.background = cov.bg;
    }
  });

  // Accent color
  const accentMap = {
    olive: '#CEDC00',
    blue:  '#0075C0',
    none:  '#727171',
  };
  root.setProperty('--olive', accentMap[t.accent] || accentMap.olive);

  // Density — adjusts global font-size on stage via deck-stage element
  const densityMap = {
    compact: 0.92,
    regular: 1.0,
    spacious: 1.08,
  };
  const stage = document.querySelector('deck-stage');
  if (stage) {
    stage.style.setProperty('--dc-density', densityMap[t.density] || 1);
  }
  // apply as CSS variable on body
  document.body.style.setProperty('--type-scale', densityMap[t.density] || 1);
  document.querySelectorAll('section[data-screen-label]').forEach(s => {
    s.style.zoom = densityMap[t.density] || 1;
  });

  // Motif visibility
  document.querySelectorAll('.s-three-dots').forEach(el => {
    el.style.display = (t.motif === 'all' || t.motif === 'dots') ? 'flex' : 'none';
  });
  // vertical lines on section dividers — find via the inline style pattern
  document.querySelectorAll('section.s-section div[style*="width:1px"]').forEach(el => {
    el.style.visibility = (t.motif === 'all' || t.motif === 'line') ? 'visible' : 'hidden';
  });

  // Grid overlay
  let grid = document.getElementById('__grid_overlay');
  if (t.showGrid) {
    if (!grid) {
      grid = document.createElement('div');
      grid.id = '__grid_overlay';
      grid.style.cssText = `
        position:absolute; inset:0; pointer-events:none; z-index:99;
        background-image:
          linear-gradient(to right, rgba(0,117,192,0.18) 0.5px, transparent 0.5px),
          linear-gradient(to bottom, rgba(0,117,192,0.18) 0.5px, transparent 0.5px);
        background-size:140px 60px;
      `;
      document.querySelectorAll('section[data-screen-label]').forEach(s => {
        const g = grid.cloneNode();
        // margin guides
        const margin = document.createElement('div');
        margin.style.cssText = `position:absolute; inset:56px 96px; border:0.5px dashed rgba(0,117,192,0.5); pointer-events:none;`;
        g.appendChild(margin);
        s.appendChild(g);
      });
    }
  } else {
    document.querySelectorAll('#__grid_overlay').forEach(g => g.remove());
  }

  // Mono tone (preview without olive accent)
  if (t.monoTone) {
    root.setProperty('--olive', '#727171');
  }
}

function App() {
  const [t, setTweak] = useTweaks(TWEAK_DEFAULTS);

  React.useEffect(() => {
    // small delay so deck-stage has rendered its shadow children
    const id = setTimeout(() => applyTweaks(t), 60);
    return () => clearTimeout(id);
  }, [t]);

  return (
    <TweaksPanel>
      <TweakSection label="Background" />
      <TweakRadio
        label="Cover / Section BG"
        value={t.coverBg}
        options={[
          { value: 'beige', label: 'Beige' },
          { value: 'brown', label: 'Brown' },
          { value: 'white', label: 'White' },
          { value: 'olive', label: 'Olive' },
        ]}
        onChange={(v) => setTweak('coverBg', v)}
      />

      <TweakSection label="Accent" />
      <TweakRadio
        label="Accent color"
        value={t.accent}
        options={[
          { value: 'olive', label: 'Olive' },
          { value: 'blue',  label: 'Blue'  },
          { value: 'none',  label: 'None'  },
        ]}
        onChange={(v) => setTweak('accent', v)}
      />
      <TweakToggle
        label="Mono tone preview"
        value={t.monoTone}
        onChange={(v) => setTweak('monoTone', v)}
      />

      <TweakSection label="Layout" />
      <TweakRadio
        label="Type density"
        value={t.density}
        options={[
          { value: 'compact',  label: 'Compact' },
          { value: 'regular',  label: 'Regular' },
          { value: 'spacious', label: 'Spacious' },
        ]}
        onChange={(v) => setTweak('density', v)}
      />
      <TweakSelect
        label="Motif visibility"
        value={t.motif}
        options={[
          { value: 'all',  label: 'All motifs' },
          { value: 'dots', label: 'Three-dot only' },
          { value: 'line', label: 'Vertical line only' },
          { value: 'none', label: 'Minimal' },
        ]}
        onChange={(v) => setTweak('motif', v)}
      />
      <TweakToggle
        label="Grid overlay"
        value={t.showGrid}
        onChange={(v) => setTweak('showGrid', v)}
      />
    </TweaksPanel>
  );
}

const root = ReactDOM.createRoot(document.getElementById('tweaks-root'));
root.render(<App />);