(function () {
  'use strict';

  if (!document.querySelector('.customization-3d-wrapper')) return;

  const get3DViewer = () => window.Customization3DViewer;

  const load3DModel = (modelUrl, productId) => {
    const viewer = get3DViewer();
    return viewer ? viewer.loadModel(modelUrl, productId) : Promise.resolve(false);
  };

  const clear3DModel = () => {
    const viewer = get3DViewer();
    return viewer ? viewer.clearModel() : Promise.resolve();
  };

  const show3DEmpty = () => {
    get3DViewer()?.showEmpty();
  };

  const get3DModelUrl = (productId, variantId, wrapper) => {
    const viewer = get3DViewer();
    return viewer ? viewer.getModelUrl(productId, variantId, wrapper) : Promise.resolve(null);
  };

  const get3DHotspots = () => {
    const hotspots = window.CUSTOMIZATION_3D_HOTSPOTS;
    if (!Array.isArray(hotspots)) return [];
    return hotspots
      .filter((item) => item && typeof item === 'object')
      .map((item) => {
        const meshName = String(item.meshName || '').trim();
        if (!meshName) return null;

        let offset = [0, 0, 0];
        if (Array.isArray(item.offset) && item.offset.length >= 3) {
          const parsed = item.offset.slice(0, 3).map((v) => Number(v));
          if (parsed.every(Number.isFinite)) {
            const maxAbs = Math.max(...parsed.map((v) => Math.abs(v)));
            offset = parsed; 
          }
        }

        const next = {
          id: String(item.id || meshName),
          name: String(item.name || item.id || meshName),
          meshName,
          offset,
        };

        const color = String(item.color || '').trim();
        if (/^#([0-9a-f]{3}|[0-9a-f]{6})$/i.test(color)) next.color = color;

        const r = Number(item.radius);
        if (Number.isFinite(r) && r > 0) {
          next.radius = Math.min(Math.max(r, 0.5), 30);
        } else {
          const defaultRadius = Number(window.CUSTOMIZATION_3D_HOTSPOT_RADIUS_DEFAULT);
          next.radius = Number.isFinite(defaultRadius) && defaultRadius > 0
            ? Math.min(30, defaultRadius)
            : 18;
        }

        const icon = String(item.icon || '').trim();
        if (icon && (/^https?:\/\//i.test(icon) || icon.startsWith('//'))) {
          next.icon = icon;
        }

        if (item.payload && typeof item.payload === 'object' && !Array.isArray(item.payload)) {
          next.payload = item.payload;
        }

        return next;
      })
      .filter(Boolean);
  };

  const getHotspotActionConfig = (detail = {}) => {
    const all = window.CUSTOMIZATION_3D_HOTSPOT_ACTIONS;
    if (!all || typeof all !== 'object') return null;
    return all[detail.id] || all[detail.name] || null;
  };

  const handle3DHotspotClick = (event) => {
    const detail = event?.detail || {};
    const viewer = get3DViewer();
    if (!viewer) return;

    if (typeof window.CUSTOMIZATION_3D_ON_HOTSPOT_CLICK === 'function') {
      try {
        window.CUSTOMIZATION_3D_ON_HOTSPOT_CLICK(detail, viewer);
      } catch (err) {
        console.warn('[Customization] CUSTOMIZATION_3D_ON_HOTSPOT_CLICK failed:', err);
      }
    }

    const action = getHotspotActionConfig(detail);
    if (action?.door) {
      viewer.door?.toggle(action.door);
    }
    if (action?.clipping) {
      const clip = action.clipping;
      if (typeof clip.height === 'number') {
        viewer.clipping?.setY(
          clip.height,
          clip.keepBelow !== false,
          Array.isArray(clip.meshNames) ? clip.meshNames : []
        );
      }
    }
  };

  const setup3DEventBridge = () => {
    if (document.documentElement.dataset.customization3dEventsBoundCopy === '1') return;
    document.documentElement.dataset.customization3dEventsBoundCopy = '1';

    let hotspotRenderTimer = null;
    const renderConfiguredHotspots = () => {
      if (hotspotRenderTimer) clearTimeout(hotspotRenderTimer);
      hotspotRenderTimer = setTimeout(() => {
        hotspotRenderTimer = null;
        const hotspots = get3DHotspots();
        const viewer = get3DViewer();
        viewer?.hotspot?.clear?.();
        if (!hotspots.length) return;
        viewer?.hotspot?.render(hotspots);
      }, 200);
    };

    document.addEventListener('3d:scene:ready', renderConfiguredHotspots);
    document.addEventListener('3d:hotspots:update', renderConfiguredHotspots);
    document.addEventListener('3d:hotspot:click', handle3DHotspotClick);
  };

  const setupWheelScrollLockOn3DContainer = () => {
    const container = document.querySelector('[data-3d-container]');
    if (!container || container.dataset.customization3dWheelLockCopy === '1') return;
    container.dataset.customization3dWheelLockCopy = '1';
    container.addEventListener(
      'wheel',
      (e) => {
        if (!container.contains(e.target)) return;
        e.preventDefault();
      },
      { capture: true, passive: false }
    );
  };

  const refreshHotspots = () => {
    document.dispatchEvent(new CustomEvent('3d:hotspots:update', { bubbles: true }));
  };

  window.Customization3DInteractions = {
    load3DModel,
    clear3DModel,
    show3DEmpty,
    get3DModelUrl,
    get3DHotspots,
    refreshHotspots,
  };

  const init3DInteractions = () => {
    setup3DEventBridge();
    setupWheelScrollLockOn3DContainer();
  };

  if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', init3DInteractions);
  } else {
    init3DInteractions();
  }
})();