/*
* jQuery The Final Countdown plugin v1.0.0 beta
* http://github.com/hilios/jquery.countdown
*
* Copyright (c) 2011 Edson Hilios
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
(function ($) {

    $.fn.countdown = function (toDate, callback) {
        var handlers = ['seconds', 'minutes', 'hours', 'days', 'weeks', 'daysLeft'];

        function delegate(scope, method) {
            return function () { return method.call(scope) }
        }

        return this.each(function () {
            // Convert
            if (!(toDate instanceof Date)) {
                if (String(toDate).match(/^[0-9]*$/)) {
                    toDate = new Date(toDate);
                } else if (toDate.match(/([0-9]{1,2})\/([0-9]{1,2})\/([0-9]{2,4})\s([0-9]{1,2})\:([0-9]{2})\:([0-9]{2})/) ||
            toDate.match(/([0-9]{2,4})\/([0-9]{1,2})\/([0-9]{1,2})\s([0-9]{1,2})\:([0-9]{2})\:([0-9]{2})/)
            ) {
                    toDate = new Date(toDate);
                } else if (toDate.match(/([0-9]{1,2})\/([0-9]{1,2})\/([0-9]{2,4})/) ||
                  toDate.match(/([0-9]{2,4})\/([0-9]{1,2})\/([0-9]{1,2})/)
                  ) {
                    toDate = new Date(toDate)
                } else {
                    throw new Error("Doesn't seen to be a valid date object or string")
                }
            }

            var $this = $(this),
          values = {},
          lasting = {},
          interval = $this.data('countdownInterval'),
          currentDate = new Date(),
          secondsLeft = Math.floor((toDate.valueOf() - currentDate.valueOf()) / 1000);

            function triggerEvents() {
                // Evaluate if this node is included in the html
                if ($this.closest('html').length === 0) {
                    stop(); // Release the memory
                    dispatchEvent('removed');
                    return;
                }
                // Calculate the time offset
                secondsLeft--;
                if (secondsLeft < 0) {
                    secondsLeft = 0;
                }
                lasting = {
                    seconds: secondsLeft % 60,
                    minutes: Math.floor(secondsLeft / 60) % 60,
                    hours: Math.floor(secondsLeft / 60 / 60) % 24,
                    days: Math.floor(secondsLeft / 60 / 60 / 24),
                    weeks: Math.floor(secondsLeft / 60 / 60 / 24 / 7),
                    daysLeft: Math.floor(secondsLeft / 60 / 60 / 24) % 7
                }
                for (var i = 0; i < handlers.length; i++) {
                    var eventName = handlers[i];
                    if (values[eventName] != lasting[eventName]) {
                        values[eventName] = lasting[eventName];
                        dispatchEvent(eventName);
                    }
                }
                if (secondsLeft == 0) {
                    stop();
                    dispatchEvent('finished');
                }
            }
            triggerEvents();

            function dispatchEvent(eventName) {
                var event = $.Event(eventName);
                event.date = new Date(new Date().valueOf() + secondsLeft);
                event.value = values[eventName] || "0";
                event.toDate = toDate;
                event.lasting = lasting;
                switch (eventName) {
                    case "seconds":
                    case "minutes":
                    case "hours":
                        event.value = event.value < 10 ? '0' + event.value.toString() : event.value.toString();
                        break;
                    default:
                        if (event.value) {
                            event.value = event.value.toString();
                        }
                        break;
                }
                callback.call($this, event);
            }

            function stop() {
                clearInterval(interval);
            }

            function start() {
                $this.data('countdownInterval', setInterval(delegate($this, triggerEvents), 1000));
                interval = $this.data('countdownInterval');
            }

            if (interval) stop();
            start();
        });
    }
})(jQuery);