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'use strict';
const documentSchemaSymbol = require('../../helpers/symbols').documentSchemaSymbol;const internalToObjectOptions = require('../../options').internalToObjectOptions;const utils = require('../../utils');
let Document;const getSymbol = require('../../helpers/symbols').getSymbol;const scopeSymbol = require('../../helpers/symbols').scopeSymbol;
const isPOJO = utils.isPOJO;
/*! * exports */
exports.compile = compile;exports.defineKey = defineKey;
const _isEmptyOptions = Object.freeze({  minimize: true,  virtuals: false,  getters: false,  transform: false});
/** * Compiles schemas. * @param {Object} tree * @param {Any} proto * @param {String} prefix * @param {Object} options * @api private */
function compile(tree, proto, prefix, options) {  Document = Document || require('../../document');  const typeKey = options.typeKey;
  for (const key of Object.keys(tree)) {    const limb = tree[key];
    const hasSubprops = isPOJO(limb) &&      Object.keys(limb).length > 0 &&      (!limb[typeKey] || (typeKey === 'type' && isPOJO(limb.type) && limb.type.type));    const subprops = hasSubprops ? limb : null;
    defineKey({ prop: key, subprops: subprops, prototype: proto, prefix: prefix, options: options });  }}
/** * Defines the accessor named prop on the incoming prototype. * @param {Object} options * @param {String} options.prop * @param {Boolean} options.subprops * @param {Any} options.prototype * @param {String} [options.prefix] * @param {Object} options.options * @api private */
function defineKey({ prop, subprops, prototype, prefix, options }) {  Document = Document || require('../../document');  const path = (prefix ? prefix + '.' : '') + prop;  prefix = prefix || '';
  if (subprops) {    Object.defineProperty(prototype, prop, {      enumerable: true,      configurable: true,      get: function() {        const _this = this;        if (!this.$__.getters) {          this.$__.getters = {};        }
        if (!this.$__.getters[path]) {          const nested = Object.create(Document.prototype, getOwnPropertyDescriptors(this));
          // save scope for nested getters/setters          if (!prefix) {            nested.$__[scopeSymbol] = this;          }          nested.$__.nestedPath = path;
          Object.defineProperty(nested, 'schema', {            enumerable: false,            configurable: true,            writable: false,            value: prototype.schema          });
          Object.defineProperty(nested, '$__schema', {            enumerable: false,            configurable: true,            writable: false,            value: prototype.schema          });
          Object.defineProperty(nested, documentSchemaSymbol, {            enumerable: false,            configurable: true,            writable: false,            value: prototype.schema          });
          Object.defineProperty(nested, 'toObject', {            enumerable: false,            configurable: true,            writable: false,            value: function() {              return utils.clone(_this.get(path, null, {                virtuals: this &&                  this.schema &&                  this.schema.options &&                  this.schema.options.toObject &&                  this.schema.options.toObject.virtuals || null              }));            }          });
          Object.defineProperty(nested, '$__get', {            enumerable: false,            configurable: true,            writable: false,            value: function() {              return _this.get(path, null, {                virtuals: this && this.schema && this.schema.options && this.schema.options.toObject && this.schema.options.toObject.virtuals || null              });            }          });
          Object.defineProperty(nested, 'toJSON', {            enumerable: false,            configurable: true,            writable: false,            value: function() {              return _this.get(path, null, {                virtuals: this && this.schema && this.schema.options && this.schema.options.toJSON && this.schema.options.toJSON.virtuals || null              });            }          });
          Object.defineProperty(nested, '$__isNested', {            enumerable: false,            configurable: true,            writable: false,            value: true          });
          Object.defineProperty(nested, '$isEmpty', {            enumerable: false,            configurable: true,            writable: false,            value: function() {              return Object.keys(this.get(path, null, _isEmptyOptions) || {}).length === 0;            }          });
          Object.defineProperty(nested, '$__parent', {            enumerable: false,            configurable: true,            writable: false,            value: this          });
          compile(subprops, nested, path, options);          this.$__.getters[path] = nested;        }
        return this.$__.getters[path];      },      set: function(v) {        if (v != null && v.$__isNested) {          // Convert top-level to POJO, but leave subdocs hydrated so `$set`          // can handle them. See gh-9293.          v = v.$__get();        } else if (v instanceof Document && !v.$__isNested) {          v = v.$toObject(internalToObjectOptions);        }        const doc = this.$__[scopeSymbol] || this;        doc.$set(path, v);      }    });  } else {    Object.defineProperty(prototype, prop, {      enumerable: true,      configurable: true,      get: function() {        return this[getSymbol].call(this.$__[scopeSymbol] || this, path);      },      set: function(v) {        this.$set.call(this.$__[scopeSymbol] || this, path, v);      }    });  }}
// gets descriptors for all properties of `object`// makes all properties non-enumerable to match previous behavior to #2211function getOwnPropertyDescriptors(object) {  const result = {};
  Object.getOwnPropertyNames(object).forEach(function(key) {    const skip = [      'isNew',      '$__',      '$errors',      'errors',      '_doc',      '$locals',      '$op',      '__parentArray',      '__index',      '$isDocumentArrayElement'    ].indexOf(key) === -1;    if (skip) {      return;    }
    result[key] = Object.getOwnPropertyDescriptor(object, key);    result[key].enumerable = false;  });
  return result;}