import * as THREE from 'three';
import Dexie from 'dexie';

const db = new Dexie('DB');
db.version(1).stores({
  modal: '&modalName, modalVal, versionStr',
});
self['modelLen'] = -1;

/* self.addEventListener(
  'message',
  async function (e) {
    const { data, message } = e.data;
    if (message == 'load') {
      self['modelLen']--;
      if (data) {
        const model = await loadGltf(data);
        if (self['modelLen'] >= 0) {
          self.postMessage({ message: 'save', data: model });
        }
      }
    } else if (message == 'start') {
      self['modelLen'] += data + 1;
    }
    if (self['modelLen'] == 0) {
      self.postMessage({ message: 'end', data: null });
      this.close();
    }
  },
  false
); */
self.addEventListener(
  'message',
  async function (e) {
    const { data, message } = e.data;
    if (message == 'load') {
      if (data) {
        const model = await loadModal(data);
        self.postMessage({ message: 'end', data: model });
      }
    }
  },
  false
);

function loadModal(url) {
  return new Promise((resolve, reject) => {
    const suffix = url.match(/[^.]+$/)[0];

    const loader = new THREE.FileLoader();
    if (suffix == 'glb' || suffix == 'gltf'){
      loader.setPath('/model/glft/');
    } else if (suffix == 'fbx' || suffix == 'FBX') {
      loader.setPath('/model/fbx/');
    }
    
    loader.setResponseType('arraybuffer');
    loader.setRequestHeader({})
    loader.setWithCredentials(false);
    try {
      loader.load(url, async (data) => {
        const fileName = url.replace(/(.*\/)*([^.]+).*/gi, '$2');
        const modalName = fileName.slice(0, -11);
        const version = fileName.slice(-11);
        const model = {
          modalName: modalName,
          modalVal: data,
          versionStr: version,
        };
        await db.modal.add(model);
        self.postMessage({ message: 'save', data: model });
        resolve(model);
      });
    } catch (error) {
      reject(error);
    }
  });
}