import freezeObject from './freezeObject.js';
import JulianDate from './JulianDate.js';
import TimeInterval from './TimeInterval.js';

    var MINIMUM_VALUE = freezeObject(JulianDate.fromIso8601('0000-01-01T00:00:00Z'));
    var MAXIMUM_VALUE = freezeObject(JulianDate.fromIso8601('9999-12-31T24:00:00Z'));
    var MAXIMUM_INTERVAL = freezeObject(new TimeInterval({
        start : MINIMUM_VALUE,
        stop : MAXIMUM_VALUE
    }));

    /**
     * Constants related to ISO8601 support.
     *
     * @exports Iso8601
     *
     * @see {@link http://en.wikipedia.org/wiki/ISO_8601|ISO 8601 on Wikipedia}
     * @see JulianDate
     * @see TimeInterval
     */
    var Iso8601 = {
        /**
         * A {@link JulianDate} representing the earliest time representable by an ISO8601 date.
         * This is equivalent to the date string '0000-01-01T00:00:00Z'
         *
         * @type {JulianDate}
         * @constant
         */
        MINIMUM_VALUE : MINIMUM_VALUE,

        /**
         * A {@link JulianDate} representing the latest time representable by an ISO8601 date.
         * This is equivalent to the date string '9999-12-31T24:00:00Z'
         *
         * @type {JulianDate}
         * @constant
         */
        MAXIMUM_VALUE : MAXIMUM_VALUE,

        /**
         * A {@link TimeInterval} representing the largest interval representable by an ISO8601 interval.
         * This is equivalent to the interval string '0000-01-01T00:00:00Z/9999-12-31T24:00:00Z'
         *
         * @type {JulianDate}
         * @constant
         */
        MAXIMUM_INTERVAL : MAXIMUM_INTERVAL
    };
export default Iso8601;