function useForgeFloor() {
  const findLevels = (viewer) => {
    return new Promise((resolve, reject) => {
      viewer.model.search(
        "layer",
        (nodeIds) => {
          let levels = [];
          const tree = viewer.model.getInstanceTree();
          for (let i = 0; i < nodeIds.length; i++) {
            const dbId = nodeIds[i];
            const name = tree.getNodeName(dbId);
            if (!name || name.includes("<沒有層級>")) continue;
            levels.push({
              guid: dbId,
              name,
              dbId,
              extension: {
                buildingStory: true,
                structure: false,
                computationHeight: 0,
                groundPlane: false,
                hasAssociatedViewPlans: false,
              },
            });
          }
          levels = levels.sort((a, b) => b.elevation - a.elevation);
          resolve(levels);
        },
        (e) => {
          reject(e);
        }
      );
    });
  };

  // function getCutPlaneParam(idx, n, viewer, levels) {
  //   if (idx < 0 || !n) return;

  //   const level = levels[idx];
  //   if (!level) return;

  //   const model = viewer.model;
  //   const globalOffset = model.getData().globalOffset;
  //   const units = model.getUnitString();
  //   const elevRaw = Autodesk.Viewing.Private.convertUnits(
  //     "ft",
  //     units,
  //     1,
  //     level.elevation
  //   );
  //   let d = elevRaw - globalOffset.z - 0.5;
  //   if (n == 1) d = -1 * d;

  //   return new THREE.Vector4(0, 0, n, d);
  // }

  // function profile(viewer, levels) {
  //   //const upperIdx = 6;
  //   const upperCutPlaneParam = getCutPlaneParam(2, 1, viewer, levels);
  //   //const lowerIdx = 7;
  //   const lowerCutPlaneParam = getCutPlaneParam(3, -1, viewer, levels);
  //   viewer.setCutPlanes([upperCutPlaneParam, lowerCutPlaneParam]);
  // }



  return { findLevels, profile };
}

export default useForgeFloor;