nest-cli/lib/api/models/-base.js

Unofficial command-line tool to control Nest devices

'use strict';

const snakeCase = require('../utils/snake-case');

function createPropertyOptions(property, attr) {
  const type = attr.type;
  const options = attr.options;

  const out = {
    enumerable: true,
    configurable: true,
    get() {
      return this.transforms[type](this._data[property]);
    }
  };

  if (!options.readOnly) {
    out.set = function setter(newValue) {
      this._data[property] = newValue;
    };
  }
  return out;
}

class Model {
  constructor(data) {
    Object.defineProperty(this, '_data', {
      enumerable: false,
      value: data
    });

    Object.defineProperty(this, 'transforms', {
      enumerable: false,
      value: {
        number(value) {
          return parseInt(value, 10);
        },
        string(value) {
          return value + '';
        },
        boolean(value) {
          return !!value;
        }
      }
    });

    const attributes = this.constructor.attrs();

    for (let attrKey in attributes) {
      if (attributes.hasOwnProperty(attrKey)) {
        let alias = snakeCase(attrKey);
        const attribute = attributes[attrKey];

        if (attribute.options.alias) {
          alias = attribute.options.alias;
        }

        const propertyOptions = createPropertyOptions(alias, attribute);
        Object.defineProperty(this, attrKey, propertyOptions);
      }
    }
  }

  static attr(valueType, options) {
    return {
      type: valueType,
      options: options || {}
    };
  }
}

module.exports = Model;