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'use strict';
const get = require('../get');const getSchemaDiscriminatorByValue = require('../discriminator/getSchemaDiscriminatorByValue');
/** * Like `schema.path()`, except with a document, because impossible to * determine path type without knowing the embedded discriminator key. * @param {Document} doc * @param {String} path * @param {Object} [options] * @api private */
module.exports = function getEmbeddedDiscriminatorPath(doc, path, options) {  options = options || {};  const typeOnly = options.typeOnly;  const parts = path.indexOf('.') === -1 ? [path] : path.split('.');  let schemaType = null;  let type = 'adhocOrUndefined';
  const schema = getSchemaDiscriminatorByValue(doc.schema, doc.get(doc.schema.options.discriminatorKey)) || doc.schema;
  for (let i = 0; i < parts.length; ++i) {    const subpath = parts.slice(0, i + 1).join('.');    schemaType = schema.path(subpath);    if (schemaType == null) {      type = 'adhocOrUndefined';      continue;    }    if (schemaType.instance === 'Mixed') {      return typeOnly ? 'real' : schemaType;    }    type = schema.pathType(subpath);    if ((schemaType.$isSingleNested || schemaType.$isMongooseDocumentArrayElement) &&    schemaType.schema.discriminators != null) {      const discriminators = schemaType.schema.discriminators;      const discriminatorKey = doc.get(subpath + '.' +        get(schemaType, 'schema.options.discriminatorKey'));      if (discriminatorKey == null || discriminators[discriminatorKey] == null) {        continue;      }      const rest = parts.slice(i + 1).join('.');      return getEmbeddedDiscriminatorPath(doc.get(subpath), rest, options);    }  }
  // Are we getting the whole schema or just the type, 'real', 'nested', etc.  return typeOnly ? type : schemaType;};