/// <reference path="jquery-1.5.1.min.js" />

/*
* Google Calendar feed reader - plugin to get upcoming events from a *public* google calendar
* Parameters: FeedUri, MaxResults & DisplayCount
* README: Make sure that your gCal feed url end with "/public/full".
* @version 1.0
*/
google.load("gdata", "1.x", { packages: ["calendar"] });

(function ($) {
    //Add gcal element
    $(document).ready(function () {
        $('.calendar').prepend('<div id="gcal">Loading...</div>');
    });

    //Resize image on ready or resize
    $.gCalReader = function (options) {
        //Default settings
        var settings = {
            feedUri: 'http://www.google.com/calendar/feeds/en.usa%23holiday%40group.v.calendar.google.com/public/full',
            maxresults: 20,
            displayCount: 1
        };

        var feedUri = options.feedUri;
        if (feedUri.indexOf("public/full") == -1) {
            feedUri = settings.feedUri;
        }

        var options = $.extend(settings, options);

        function _run() {
            var calendarService = new google.gdata.calendar.CalendarService('GoogleInc-jsguide-1.0');

            // The "public/full" feed is used to retrieve events from the named public calendar with full projection.
            var query = new google.gdata.calendar.CalendarEventQuery(feedUri);
            query.setOrderBy('starttime');
            query.setSortOrder('ascending');
            query.setFutureEvents(true);
            query.setSingleEvents(true);
            query.setMaxResults(options.maxresults);

            var callback = function (result) {

                var entries = result.feed.getEntries();
                $('#gcal').html('');
				if (options.displayCount) {
                    //$('#gcal').html('<img src="../images/calendar_icon.gif" alt="Campus Calendar" width="40" height="40" class="fltRgt" />');
                }
                $('#gcal').append('<div id="eventlist"></div>');

                for (var i = 0; i < entries.length; i++) {
                    var eventEntry = entries[i];
                    var eventTitle = eventEntry.getTitle().getText();
                    var startDateTime = null;
					var endDateTime = null;
                    var eventDate = null;
                    var eventWhere = null;
                    var eventContent = eventEntry.getContent().getText();

                    var times = eventEntry.getTimes();
                    if (times.length > 0) {
                        startDateTime = times[0].getStartTime();
						eventDate = startDateTime.getDate();
						endDateTime = times[0].getEndTime();
                        eventEndDate = endDateTime.getDate();
                    }

                    var d_names = new Array("Sun.", "Mon.", "Tues.", "Wed.", "Thurs.", "Fri.", "Sat.");
                    var m_names = new Array("Jan.", "Feb.", "Mar.", "Apr.", "May", "June", "July", "Aug.", "Sept.", "Oct.", "Nov.", "Dec.");

                    var a_p = "";
                    var d = eventDate;
                    var curr_hour = d.getHours();
                    if (curr_hour < 12) {
                        a_p = "am";
                    }
                    else {
                        a_p = "pm";
                    }
                    if (curr_hour == 0) {
                        curr_hour = 12;
                    }
                    if (curr_hour > 12) {
                        curr_hour = curr_hour - 12;
                    }

                    var curr_min = d.getMinutes();
                    curr_min = curr_min + "";

                    if (curr_min.length == 1) {
                        curr_min = "0" + curr_min;
                    }
					
					var end_a_p = "";
                    var d = eventEndDate;
                    var curr_hour1 = d.getHours();
                    if (curr_hour1 < 12) {
                        end_a_p = "am";
                    }
                    else {
                        end_a_p = "pm";
                    }
                    if (curr_hour1 == 0) {
                        curr_hour1 = 12;
                    }
                    if (curr_hour1 > 12) {
                        curr_hour1 = curr_hour1 - 12;
                    }

                    var curr_min1 = d.getMinutes();
                    curr_min1 = curr_min1 + "";

                    if (curr_min1.length == 1) {
                        curr_min1 = "0" + curr_min1;
                    }

                    var time = curr_hour + ':' + curr_min + a_p;
					var endTime = curr_hour1 + ':' + curr_min1 + end_a_p;
					var dash = '-';
					
					if (time == endTime) {
						var time = "All";
						var endTime = "Day";
						var dash = ' ';
					}
					
                    var day = eventDate.getDay();
                    var month = eventDate.getMonth();
                    var date = eventDate.getDate();
                    var dayname = d_names[day];
                    var monthname = m_names[month];
                    var location = eventEntry.getLocations();
                    var eventWhere = location[0].getValueString();

                    var eventhtml = '<p id="eventtitle">' + eventTitle + '<br>' + dayname + ' ' + monthname + ' ' + date + ', ' + time + '' + dash + '' + endTime;
                    $('#eventlist').append(' ' + eventhtml + '</p>');
                }
            };

            // Error handler to be invoked when getEventsFeed() produces an error
            var handleError = function (error) {
                $('#gcal').html('<pre>' + error + '</pre>');
            };

            // Submit the request using the calendar service object
            calendarService.getEventsFeed(query, callback, handleError);
        }
        google.setOnLoadCallback(_run);

        $(window).load(function () {

        }); //End window load
    };

})(jQuery);