/*
* jQuery jclock - Clock plugin - v 2.2.0
* http://plugins.jquery.com/project/jclock
*
* Copyright (c) 2007-2009 Doug Sparling <http://www.dougsparling.com>
* Licensed under the MIT License:
* http://www.opensource.org/licenses/mit-license.php
*/
(function ($) {

    $.fn.jclock = function (options) {
        var version = '2.2.0';

        // options
        var opts = $.extend({}, $.fn.jclock.defaults, options);

        return this.each(function () {
            $this = $(this);
            $this.timerID = null;
            $this.running = false;

            // Record keeping for seeded clock
            $this.increment = 0;
            $this.lastCalled = new Date().getTime();

            var o = $.meta ? $.extend({}, opts, $this.data()) : opts;

            $this.format = o.format;
            $this.utc = o.utc;
            // deprecate utc_offset (v 2.2.0)
            $this.utcOffset = (o.utc_offset != null) ? o.utc_offset : o.utcOffset;
            $this.seedTime = o.seedTime;
            $this.timeout = o.timeout;

            $this.css({
                fontFamily: o.fontFamily,
                fontSize: o.fontSize,
                backgroundColor: o.background,
                color: o.foreground
            });

            // %a
            $this.daysAbbrvNames = new Array(7);
            $this.daysAbbrvNames[0] = "Sun";
            $this.daysAbbrvNames[1] = "Mon";
            $this.daysAbbrvNames[2] = "Tue";
            $this.daysAbbrvNames[3] = "Wed";
            $this.daysAbbrvNames[4] = "Thu";
            $this.daysAbbrvNames[5] = "Fri";
            $this.daysAbbrvNames[6] = "Sat";

            // %A
            $this.daysFullNames = new Array(7);
            $this.daysFullNames[0] = "Sunday";
            $this.daysFullNames[1] = "Monday";
            $this.daysFullNames[2] = "Tuesday";
            $this.daysFullNames[3] = "Wednesday";
            $this.daysFullNames[4] = "Thursday";
            $this.daysFullNames[5] = "Friday";
            $this.daysFullNames[6] = "Saturday";

            // %b
            $this.monthsAbbrvNames = new Array(12);
            $this.monthsAbbrvNames[0] = "Jan";
            $this.monthsAbbrvNames[1] = "Feb";
            $this.monthsAbbrvNames[2] = "Mar";
            $this.monthsAbbrvNames[3] = "Apr";
            $this.monthsAbbrvNames[4] = "May";
            $this.monthsAbbrvNames[5] = "Jun";
            $this.monthsAbbrvNames[6] = "Jul";
            $this.monthsAbbrvNames[7] = "Aug";
            $this.monthsAbbrvNames[8] = "Sep";
            $this.monthsAbbrvNames[9] = "Oct";
            $this.monthsAbbrvNames[10] = "Nov";
            $this.monthsAbbrvNames[11] = "Dec";

            // %B
            $this.monthsFullNames = new Array(12);
            $this.monthsFullNames[0] = "January";
            $this.monthsFullNames[1] = "February";
            $this.monthsFullNames[2] = "March";
            $this.monthsFullNames[3] = "April";
            $this.monthsFullNames[4] = "May";
            $this.monthsFullNames[5] = "June";
            $this.monthsFullNames[6] = "July";
            $this.monthsFullNames[7] = "August";
            $this.monthsFullNames[8] = "September";
            $this.monthsFullNames[9] = "October";
            $this.monthsFullNames[10] = "November";
            $this.monthsFullNames[11] = "December";

            $.fn.jclock.startClock($this);

        });
    };

    $.fn.jclock.startClock = function (el) {
        $.fn.jclock.stopClock(el);
        $.fn.jclock.displayTime(el);
    }

    $.fn.jclock.stopClock = function (el) {
        if (el.running) {
            clearTimeout(el.timerID);
        }
        el.running = false;
    }

    $.fn.jclock.displayTime = function (el) {
        var time = $.fn.jclock.getTime(el);
        el.html(time);
        el.timerID = setTimeout(function () { $.fn.jclock.displayTime(el) }, el.timeout);
    }

    $.fn.jclock.getTime = function (el) {
        if (typeof (el.seedTime) == 'undefined') {
            // Seed time not being used, use current time
            var now = new Date();
        } else {
            // Otherwise, use seed time with increment
            el.increment += new Date().getTime() - el.lastCalled;
            var now = new Date(el.seedTime + el.increment);
            el.lastCalled = new Date().getTime();
        }

        if (el.utc == true) {
            var localTime = now.getTime();
            var localOffset = now.getTimezoneOffset() * 60000;
            var utc = localTime + localOffset;
            var utcTime = utc + (3600000 * el.utcOffset);
            now = new Date(utcTime);
        }

        var timeNow = "";
        var i = 0;
        var index = 0;
        while ((index = el.format.indexOf("%", i)) != -1) {
            timeNow += el.format.substring(i, index);
            index++;

            // modifier flag
            //switch (el.format.charAt(index++)) {
            //}

            var property = $.fn.jclock.getProperty(now, el, el.format.charAt(index));
            index++;

            //switch (switchCase) {
            //}

            timeNow += property;
            i = index
        }

        timeNow += el.format.substring(i);
        return timeNow;
    };

    $.fn.jclock.getProperty = function (dateObject, el, property) {

        switch (property) {
            case "a": // abbrv day names
                return (el.daysAbbrvNames[dateObject.getDay()]);
            case "A": // full day names
                return (el.daysFullNames[dateObject.getDay()]);
            case "b": // abbrv month names
                return (el.monthsAbbrvNames[dateObject.getMonth()]);
            case "B": // full month names
                return (el.monthsFullNames[dateObject.getMonth()]);
            case "d": // day 01-31
                return ((dateObject.getDate() < 10) ? "0" : "") + dateObject.getDate();
            case "H": // hour as a decimal number using a 24-hour clock (range 00 to 23)
                return ((dateObject.getHours() < 10) ? "0" : "") + dateObject.getHours();
            case "I": // hour as a decimal number using a 12-hour clock (range 01 to 12)
                var hours = (dateObject.getHours() % 12 || 12);
                return ((hours < 10) ? "0" : "") + hours;
            case "m": // month number
                return ((dateObject.getMonth() < 10) ? "0" : "") + (dateObject.getMonth() + 1);
            case "M": // minute as a decimal number
                return ((dateObject.getMinutes() < 10) ? "0" : "") + dateObject.getMinutes();
            case "p": // either `am' or `pm' according to the given time value,
                // or the corresponding strings for the current locale
                return (dateObject.getHours() < 12 ? "am" : "pm");
            case "P": // either `AM' or `PM' according to the given time value,
                return (dateObject.getHours() < 12 ? "AM" : "PM");
            case "S": // second as a decimal number
                return ((dateObject.getSeconds() < 10) ? "0" : "") + dateObject.getSeconds();
            case "y": // two-digit year
                return dateObject.getFullYear().toString().substring(2);
            case "Y": // full year
                return (dateObject.getFullYear());
            case "%":
                return "%";
        }

    }

    // plugin defaults (24-hour)
    $.fn.jclock.defaults = {
        format: '%H:%M:%S',
        utcOffset: 0,
        utc: false,
        fontFamily: '',
        fontSize: '',
        foreground: '',
        background: '',
        seedTime: undefined,
        timeout: 1000 // 1000 = one second, 60000 = one minute
    };

})(jQuery);