text: /*!
   * Module requirements.
   */
  
  var errorMessages = require('../error').messages
  var utils = require('../utils');
  
  var SchemaType = require('../schematype');
  
  var CastError = SchemaType.CastError;
  
  /**
   * Date SchemaType constructor.
   *
   * @param {String} key
   * @param {Object} options
   * @inherits SchemaType
   * @api private
   */
  
  function SchemaDate (key, options) {
    SchemaType.call(this, key, options, 'Date');
  }
  
  /**
   * This schema type's name, to defend against minifiers that mangle
   * function names.
   *
   * @api private
   */
  SchemaDate.schemaName = 'Date';
  
  /*!
   * Inherits from SchemaType.
   */
  SchemaDate.prototype = Object.create( SchemaType.prototype );
  SchemaDate.prototype.constructor = SchemaDate;
  
  /**
   * Declares a TTL index (rounded to the nearest second) for _Date_ types only.
   *
   * This sets the `expiresAfterSeconds` index option available in MongoDB >= 2.1.2.
   * This index type is only compatible with Date types.
   *
   * ####Example:
   *
   *     // expire in 24 hours
   *     new Schema({ createdAt: { type: Date, expires: 60*60*24 }});
   *
   * `expires` utilizes the `ms` module from [guille](https://github.com/guille/) allowing us to use a friendlier syntax:
   *
   * ####Example:
   *
   *     // expire in 24 hours
   *     new Schema({ createdAt: { type: Date, expires: '24h' }});
   *
   *     // expire in 1.5 hours
   *     new Schema({ createdAt: { type: Date, expires: '1.5h' }});
   *
   *     // expire in 7 days
   *     var schema = new Schema({ createdAt: Date });
   *     schema.path('createdAt').expires('7d');
   *
   * @param {Number|String} when
   * @added 3.0.0
   * @return {SchemaType} this
   * @api public
   */
  
  SchemaDate.prototype.expires = function (when) {
    if (!this._index || 'Object' !== this._index.constructor.name) {
      this._index = {};
    }
  
    this._index.expires = when;
    utils.expires(this._index);
    return this;
  };
  
  /**
   * Required validator for date
   *
   * @api private
   */
  
  SchemaDate.prototype.checkRequired = function (value) {
    return value instanceof Date;
  };
  
  /**
   * Sets a minimum date validator.
   *
   * ####Example:
   *
   *     var s = new Schema({ d: { type: Date, min: Date('1970-01-01') })
   *     var M = db.model('M', s)
   *     var m = new M({ d: Date('1969-12-31') })
   *     m.save(function (err) {
   *       console.error(err) // validator error
   *       m.d = Date('2014-12-08');
   *       m.save() // success
   *     })
   *
   *     // custom error messages
   *     // We can also use the special {MIN} token which will be replaced with the invalid value
   *     var min = [Date('1970-01-01'), 'The value of path `{PATH}` ({VALUE}) is beneath the limit ({MIN}).'];
   *     var schema = new Schema({ d: { type: Date, min: min })
   *     var M = mongoose.model('M', schema);
   *     var s= new M({ d: Date('1969-12-31') });
   *     s.validate(function (err) {
   *       console.log(String(err)) // ValidationError: The value of path `d` (1969-12-31) is before the limit (1970-01-01).
   *     })
   *
   * @param {Date} value minimum date
   * @param {String} [message] optional custom error message
   * @return {SchemaType} this
   * @see Customized Error Messages #error_messages_MongooseError-messages
   * @api public
   */
  
  SchemaDate.prototype.min = function (value, message) {
    if (this.minValidator) {
      this.validators = this.validators.filter(function (v) {
        return v.validator != this.minValidator;
      }, this);
    }
  
    if (value) {
      var msg = message || errorMessages.Date.min;
      msg = msg.replace(/{MIN}/, (value === Date.now ? 'Date.now()' : this.cast(value).toString()));
      var self = this;
      this.validators.push({
        validator: this.minValidator = function (val) {
          var min = (value === Date.now ? value() : self.cast(value));
          return val === null || val.valueOf() >= min.valueOf();
        },
        message: msg,
        type: 'min'
      });
    }
  
    return this;
  };
  
  /**
   * Sets a maximum date validator.
   *
   * ####Example:
   *
   *     var s = new Schema({ d: { type: Date, max: Date('2014-01-01') })
   *     var M = db.model('M', s)
   *     var m = new M({ d: Date('2014-12-08') })
   *     m.save(function (err) {
   *       console.error(err) // validator error
   *       m.d = Date('2013-12-31');
   *       m.save() // success
   *     })
   *
   *     // custom error messages
   *     // We can also use the special {MAX} token which will be replaced with the invalid value
   *     var max = [Date('2014-01-01'), 'The value of path `{PATH}` ({VALUE}) exceeds the limit ({MAX}).'];
   *     var schema = new Schema({ d: { type: Date, max: max })
   *     var M = mongoose.model('M', schema);
   *     var s= new M({ d: Date('2014-12-08') });
   *     s.validate(function (err) {
   *       console.log(String(err)) // ValidationError: The value of path `d` (2014-12-08) exceeds the limit (2014-01-01).
   *     })
   *
   * @param {Date} maximum date
   * @param {String} [message] optional custom error message
   * @return {SchemaType} this
   * @see Customized Error Messages #error_messages_MongooseError-messages
   * @api public
   */
  
  SchemaDate.prototype.max = function (value, message) {
    if (this.maxValidator) {
      this.validators = this.validators.filter(function(v){
        return v.validator != this.maxValidator;
      }, this);
    }
  
    if (value) {
      var msg = message || errorMessages.Date.max;
      msg = msg.replace(/{MAX}/, (value === Date.now ? 'Date.now()' : this.cast(value).toString()));
      var self = this;
      this.validators.push({
        validator: this.maxValidator = function(val) {
          var max = (value === Date.now ? value() : self.cast(value));
          return val === null || val.valueOf() <= max.valueOf();
        },
        message: msg,
        type: 'max'
      });
    }
  
    return this;
  };
  
  /**
   * Casts to date
   *
   * @param {Object} value to cast
   * @api private
   */
  
  SchemaDate.prototype.cast = function (value) {
    // If null or undefined
    if (value == null || value === '')
      return value;
  
    if (value instanceof Date)
      return value;
  
    var date;
  
    // support for timestamps
    if (typeof value !== 'undefined') {
      if (value instanceof Number || 'number' == typeof value
          || String(value) == Number(value)) {
        date = new Date(Number(value));
      } else if (value.toString) {
        // support for date strings
        date = new Date(value.toString());
      }
  
      if (date.toString() != 'Invalid Date') {
        return date;
      }
    }
  
    throw new CastError('date', value, this.path);
  };
  
  /*!
   * Date Query casting.
   *
   * @api private
   */
  
  function handleSingle (val) {
    return this.cast(val);
  }
  
  function handleArray (val) {
    var self = this;
    return val.map( function (m) {
      return self.cast(m);
    });
  }
  
  SchemaDate.prototype.$conditionalHandlers =
    utils.options(SchemaType.prototype.$conditionalHandlers, {
      '$all': handleArray,
      '$gt': handleSingle,
      '$gte': handleSingle,
      '$in': handleArray,
      '$lt': handleSingle,
      '$lte': handleSingle,
      '$ne': handleSingle,
      '$nin': handleArray
    });
  
  
  /**
   * Casts contents for queries.
   *
   * @param {String} $conditional
   * @param {any} [value]
   * @api private
   */
  
  SchemaDate.prototype.castForQuery = function ($conditional, val) {
    var handler;
  
    if (2 !== arguments.length) {
      return this.cast($conditional);
    }
  
    handler = this.$conditionalHandlers[$conditional];
  
    if (!handler) {
      throw new Error("Can't use " + $conditional + " with Date.");
    }
  
    return handler.call(this, val);
  };
  
  /*!
   * Module exports.
   */
  
  module.exports = SchemaDate;
  