1/*!
  2 * Module dependencies.
  3 */
  4
  5var utils = require('../utils');
  6
  7var SchemaType = require('../schematype');
  8
  9/**
 10 * Boolean SchemaType constructor.
 11 *
 12 * @param {String} path
 13 * @param {Object} options
 14 * @inherits SchemaType
 15 * @api public
 16 */
 17
 18function SchemaBoolean(path, options) {
 19  SchemaType.call(this, path, options, 'Boolean');
 20}
 21
 22/**
 23 * This schema type's name, to defend against minifiers that mangle
 24 * function names.
 25 *
 26 * @api public
 27 */
 28SchemaBoolean.schemaName = 'Boolean';
 29
 30/*!
 31 * Inherits from SchemaType.
 32 */
 33SchemaBoolean.prototype = Object.create(SchemaType.prototype);
 34SchemaBoolean.prototype.constructor = SchemaBoolean;
 35
 36/**
 37 * Check if the given value satisfies a required validator. For a boolean
 38 * to satisfy a required validator, it must be strictly equal to true or to
 39 * false.
 40 *
 41 * @param {Any} value
 42 * @return {Boolean}
 43 * @api public
 44 */
 45
 46SchemaBoolean.prototype.checkRequired = function(value) {
 47  return value === true || value === false;
 48};
 49
 50/**
 51 * Casts to boolean
 52 *
 53 * @param {Object} value
 54 * @api private
 55 */
 56
 57SchemaBoolean.prototype.cast = function(value) {
 58  if (value === null) {
 59    return value;
 60  }
 61  if (value === '0') {
 62    return false;
 63  }
 64  if (value === 'true') {
 65    return true;
 66  }
 67  if (value === 'false') {
 68    return false;
 69  }
 70  return !!value;
 71};
 72
 73SchemaBoolean.$conditionalHandlers =
 74    utils.options(SchemaType.prototype.$conditionalHandlers, {});
 75
 76/**
 77 * Casts contents for queries.
 78 *
 79 * @param {String} $conditional
 80 * @param {any} val
 81 * @api private
 82 */
 83
 84SchemaBoolean.prototype.castForQuery = function($conditional, val) {
 85  var handler;
 86  if (arguments.length === 2) {
 87    handler = SchemaBoolean.$conditionalHandlers[$conditional];
 88
 89    if (handler) {
 90      return handler.call(this, val);
 91    }
 92
 93    return this.cast(val);
 94  }
 95
 96  return this.cast($conditional);
 97};
 98
 99/*!
100 * Module exports.
101 */
102
103module.exports = SchemaBoolean;