module.exports = function (mongoose) {
  const Schema = mongoose.Schema;

  var schema = new Schema({
    properties: { type: Schema.Types.Mixed },
    geometry: {
      type: {
        type: String,
        required: true,
        enum: ['Point'],
        default: 'Point'
      },
      coordinates: { type: [Number], index: '2dsphere' }
    },
    byUser: { type: Schema.Types.ObjectId, ref: 'User', required: false }
  });

  if (!schema.options.toObject) schema.options.toObject = {};
  schema.options.toObject.transform = function (doc, ret, options) {
    ret = {
      _id: doc._id,
      name: doc.properties.name,
      type: doc.properties.type,
      agl: doc.properties.agl,
      amsl: doc.properties.amsl,
      coors: doc.geometry.coordinates
    };
    return ret;
  }

  return module.exports = mongoose.model('Obstacles', schema);
}