/* 
 * Original Copyright
 * 
 * Pushup
 * Copyright (c) 2008 Nick Stakenburg (www.nickstakenburg.com)
 *
 * License: MIT-style license.
 * Website: http://www.pushuptheweb.com
 *
 */

/* 
 * Modified for jQuery by Stuart Loxton (www.stuartloxton.com)
*/

(function ($) {
		// Cookie plugin based on the work of Peter-Paul Koch - http://www.quirksmode.org
		var Cookie = {
				set: function (name, value) {
						var expires = '', options = arguments[2] || {}, date;
						if (options.duration) {
								date = new Date();
								date.setTime(date.getTime() + options.duration * 1000 * 60 * 60 * 24);
								value += '; expires=' + date.toGMTString();
						}
						document.cookie = name + "=" + value + expires + "; path=/";
				},

				remove: function (name) { 
						this.set(name, '', -1);
				},

				get: function (name) {
						var cookies = document.cookie.split(';'), nameEQ = name + "=", i, l, c;
						for (i = 0, l = cookies.length; i < l; i++) {
								c = cookies[i];
								while (c.charAt(0) === ' ') {
										c = c.substring(1, c.length);
								}
								if (c.indexOf(nameEQ) === 0) {
										return c.substring(nameEQ.length, c.length);
								}
						}
						return null;
				}
		};

		$.pushup = {
			Version: '1.0.3',
			options: {
				appearDelay: 0.5,
				fadeDelay: 15,
				images: '../images/pushup/',
				message: 'Important browser update available',
				reminder: {
					hours: 24,
					message: 'Remind me again in #{hours}'
				}
			},
			activeBrowser: null,
			updateLinks: {
				IE: 'http://www.microsoft.com/windows/downloads/ie/',
				Firefox: 'http://www.getfirefox.com',
				Safari: 'http://www.apple.com/safari/download/',
				Opera: 'http://www.opera.com/download/'
			},
			browsVer: {
				Firefox: (navigator.userAgent.indexOf('Firefox') > -1) ? parseFloat(navigator.userAgent.match(/Firefox[\/\s](\d+)/)[1]) : false,
				IE: ($.browser.msie) ? parseFloat($.browser.version) : false,
				Safari: ($.browser.safari) ? parseFloat($.browser.version) : false,
				Opera: ($.browser.opera) ? parseFloat($.browser.version) : false
			},
			browsers: {
				Firefox: 3,
				IE: 7,
				Opera: 9.5,
				Safari: 3
			},
			init: function () {
				$.each($.pushup.browsVer, function (i, browserVersion) {
					if (browserVersion && browserVersion < $.pushup.browsers[i]) {
						$.pushup.activeBrowser = i;
						if (!$.pushup.options.ignoreReminder && $.pushup.cookiesEnabled && Cookie.get('_pushupBlocked')) { 
								return; 
						} else {
							var time = ($.pushup.options.appearDelay !== undefined) ? $.pushup.options.appearDelay * 1000 : 0;
							setTimeout($.pushup.show, time);
						}
					}
				});
			},
			show: function () {
					var $elm, $icon, $message, $messageLink, hours, H, messageText, $hourElem, imgSrc, srcFol, image, styles, time;
				$elm = $(document.createElement('div'))
						.attr('id', 'pushup')
						.hide()
						.appendTo('body');
				$messageLink = $(document.createElement('a'))
						.addClass('pushup_messageLink')
						.attr('target', '_blank')
						.attr("href", $.pushup.updateLinks[$.pushup.activeBrowser])
						.appendTo($elm);
				$icon = $(document.createElement('div'))
						.addClass('pushup_icon')
						.appendTo($messageLink);
				$message = $(document.createElement('span'))
						.addClass('pushup_message')
						.html($.pushup.options.message)
						.appendTo($messageLink);
				
				hours = $.pushup.options.reminder.hours;
				if (hours && $.pushup.cookiesEnabled) {
					H = hours + ' hour' + (hours > 1 ? 's' : '');
					messageText = $.pushup.options.reminder.message.replace('#{hours}', H);
					$hourElem = $(document.createElement('a'))
							.attr('href', '#')
							.addClass('pushup_reminder')
							.html(messageText);
					$elm.append($hourElem);
					$hourElem.click(function (event) {
						$.pushup.setReminder($.pushup.options.reminder.hours);
						$.pushup.hide();
												
						event.preventDefault();
					});
				}
				if (/^(https?:\/\/|\/)/.test($.pushup.options.images)) {
					imgSrc = $.pushup.options.images;
				} else {
					$('script[src]').each(function (i, elem) {
							var $elem = $(elem);
						if (/jquery\.pushup/.test($elem.attr('src'))) {
							srcFol =  $elem.attr('src').replace('jquery.pushup.js', '');
							imgSrc = srcFol + $.pushup.options.images;
						}
					});
				}
				image = imgSrc + $.pushup.activeBrowser.toLowerCase();
				styles = ($.pushup.browsVer.IE < 7 && $.pushup.browsVer.IE) ? {
					filter: 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'' + image + '.png\'\', sizingMethod=\'crop\')'
				} : {
					background: 'url(' + image + '.png) no-repeat top left'
				};
				
				$icon.css(styles);
				$elm.fadeIn('slow');
				
				if ($.pushup.options.fadeDelay !== undefined) {
					time = $.pushup.options.fadeDelay * 1000;
					setTimeout($.pushup.hide, time);
				}
			},
			hide: function () { 
					$('#pushup').fadeOut('slow'); 
			},
			setReminder: function (hours) {
				Cookie.set('_pushupBlocked', 'blocked', { duration: 1 / 24 * hours });
			},
			resetReminder: function () { 
					Cookie.remove('_pushupBlocked');
			}
		};

		$.pushup.cookiesEnabled = (function (test) {
				if (Cookie.get(test)) {
						return true;
				}
				Cookie.set(test, 'test', { duration: 15 });
				return Cookie.get(test);
		}('_pushupCookiesEnabled'));
		$(function () {
				$.pushup.init();
		});
}(jQuery));