/**
 * @author mutexkid
 * @version 1.0
 * @copyright copyright (c)2010 Josh Skeen
 * @website http://www.joshskeen.com
 * @license MIT License : http://en.wikipedia.org/wiki/MIT_License requires
 *          jquery 1.3+
 */

(function($) {
	var elem, opts, titlebar, intervalID, numberSlides = 0, currentSlide = 0, slides = Array();

	$.fn.simpleslide = function(settings) {
		$this = $(this);

		function __start() {
			
			setInterval('$.fn.simpleslide.animateSlide()', opts.timePerSlide);
		}

		function __setup() {
			$('#jquery_simpleslide .simpleslide_slide').css("z-index", "3");
			$(slides[currentSlide]).show();
			$(slides[currentSlide]).css("z-index", "10");
			$.fn.simpleslide.setTitle($(slides[currentSlide]).attr("title"));
			__start();
		}

		function __initialize() {
			opts = settings;
			currentSlide = opts.startingSlide;
			var widthSettings = {
				'width' : opts.frameWidth + 'px',
				'height' : opts.frameHeight + 'px'
			};
			var widthSettingsText = {
				'width' : (opts.frameWidth - 8) + 'px',
				'height' : (opts.titlebarHeight - 4) + 'px'
			};

			// wrap slides in simpleslide div
			$this.wrapAll('<div id="jquery_simpleslide"></div>');
			slides = $this.children("img");
			numberSlides = $this.children("img").length - 1;
			$this.children("img").addClass('simpleslide_slide');
			// set width of slides and slideshow area
			$("#jquery_simpleslide").css(widthSettings);
			$("#jquery_simpleslide .simpleslide_slide").css(widthSettings);
			if (opts.labels === true) {
				var titlebar = '<div id="simpleslide_titlebar"><div class="simpleslide_title_bg"></div><div class="simpleslide_title_copy">foo</div></div>';
				$("#jquery_simpleslide").append(titlebar);
				$("#jquery_simpleslide #simpleslide_titlebar").css(
						widthSettings)
						.css("height", opts.titlebarHeight + "px");
				$("#jquery_simpleslide .simpleslide_title_bg").css(
						widthSettings)
						.css("height", opts.titlebarHeight + "px");
				$("#jquery_simpleslide .simpleslide_title_copy").css(
						widthSettingsText);
				var title_position = (opts.labelPosition == 'bottom' ? (opts.frameHeight - opts.titlebarHeight)
						: 0);
				$("#jquery_simpleslide #simpleslide_titlebar").css(
						"margin-top", title_position + "px");
			}
			__setup();
		}
		settings = $.extend( {}, $.fn.simpleslide.defaults, settings);
		__initialize();
	};

	$.fn.simpleslide.setTitle = function(title) {
		if (opts.labels === true) {
			$('#jquery_simpleslide .simpleslide_title_copy').text(title);
		}
	};

	$.fn.simpleslide.animateSlide = function(settings) {
		var currentSlideStyle = {
			'opacity' : '0',
			'z-index' : '10'
		};
		var backgroundSlidesStyle = {
			'opacity' : '1',
			'z-index' : '3'
		};

		currentSlide = (currentSlide < numberSlides ? currentSlide += 1 : 0);
		var elem = $(slides[currentSlide]);
		$.fn.simpleslide.setTitle($(slides[currentSlide]).attr("title"));

		if (currentSlide === 0) {
			$('#jquery_simpleslide .simpleslide_slide').css(
					backgroundSlidesStyle);
			$(elem).css(currentSlideStyle).animate( {
				opacity : 1
			}, opts.transitionTime, opts.transitionType);
		} else {
			$(elem).css(currentSlideStyle).animate(
					{
						opacity : 1
					},
					opts.transitionTime,
					opts.transitionType,
					function() {
						$('#jquery_simpleslide .simpleslide_slide').css(
								'z-index', '3');
						$(elem).css('z-index', '10');
					});
		}
	};

	$.fn.simpleslide.defaults = {
		startingSlide : 0, // first slide to feature
		frameWidth : 640, // width of slideshow
		frameHeight : 480, // height of slideshow
		titlebarHeight : 20, // height of titlebar
		labels : true, // true or false
		labelPosition : 'bottom', // 'top' or 'bottom'
		timePerSlide : 5000, // time per slide to feature
		transitionTime : 500, // time per transition
		transitionType : "swing" // transition type
	};

})(jQuery);