/*jshint browser:true */
/*!
 * FitVids 1.1
 *
 * Copyright 2013, Chris Coyier - http://css-tricks.com + Dave Rupert - http://daverupert.com
 * Credit to Thierry Koblentz - http://www.alistapart.com/articles/creating-intrinsic-ratios-for-video/
 * Released under the WTFPL license - http://sam.zoy.org/wtfpl/
 *
 */
( function ( $ ) {

	'use strict';

	$.fn.fitVids = function ( options ) {
		var settings = {
			customSelector: null,
			ignore: null
		};

		if ( ! document.getElementById( 'fit-vids-style' ) ) {
			// appendStyles: https://github.com/toddmotto/fluidvids/blob/master/dist/fluidvids.js
			var head      = document.head || document.getElementsByTagName( 'head' )[0];
			var css       = '.fluid-width-video-wrapper{width:100%;position:relative;padding:0;}.fluid-width-video-wrapper iframe,.fluid-width-video-wrapper object,.fluid-width-video-wrapper embed {position:absolute;top:0;left:0;width:100%;height:100%;}';
			var div       = document.createElement( 'div' );
			div.innerHTML = '<p>x</p><style id="fit-vids-style">' + css + '</style>';
			head.appendChild( div.childNodes[1] );
		}

		if ( options ) {
			$.extend( settings, options );
		}

		return this.each(
			function () {
					var selectors = [
					'iframe[src*="player.vimeo.com"]',
					'iframe[src*="youtube.com"]',
					'iframe[src*="youtube-nocookie.com"]',
					'iframe[src*="kickstarter.com"][src*="video.html"]',
					'object',
					'embed'
					];

				if ( settings.customSelector ) {
					  selectors.push( settings.customSelector );
				}

					var ignoreList = '.fitvidsignore';

				if ( settings.ignore ) {
					ignoreList = ignoreList + ', ' + settings.ignore;
				}

					var $allVideos = $( this ).find( selectors.join( ',' ) );
					$allVideos     = $allVideos.not( 'object object' ); // SwfObj conflict patch
					$allVideos     = $allVideos.not( ignoreList ); // Disable FitVids on this video.

					$allVideos.each(
						function () {
							var $this = $( this );
							if ( $this.parents( ignoreList ).length > 0 ) {
								return; // Disable FitVids on this video.
							}
							if ( this.tagName.toLowerCase() === 'embed' && $this.parent( 'object' ).length || $this.parent( '.fluid-width-video-wrapper' ).length ) {
								return;
							}
							if ( ( ! $this.css( 'height' ) && ! $this.css( 'width' ) ) && ( isNaN( $this.attr( 'height' ) ) || isNaN( $this.attr( 'width' ) ) ) ) {
								$this.attr( 'height', 9 );
								$this.attr( 'width', 16 );
							}
							var height  = ( this.tagName.toLowerCase() === 'object' || ( $this.attr( 'height' ) && ! isNaN( parseInt( $this.attr( 'height' ), 10 ) ) ) ) ? parseInt( $this.attr( 'height' ), 10 ) : $this.height(),
							width       = ! isNaN( parseInt( $this.attr( 'width' ), 10 ) ) ? parseInt( $this.attr( 'width' ), 10 ) : $this.width(),
							aspectRatio = height / width;
							if ( ! $this.attr( 'name' ) ) {
								var videoName = 'fitvid' + $.fn.fitVids._count;
								$this.attr( 'name', videoName );
								$.fn.fitVids._count++;
							}
							$this.wrap( '<div class="fluid-width-video-wrapper"></div>' ).parent( '.fluid-width-video-wrapper' ).css( 'padding-top', ( aspectRatio * 100 ) + '%' );
							$this.removeAttr( 'height' ).removeAttr( 'width' );
						}
					);
			}
		);
	};

	// Internal counter for unique video names.
	$.fn.fitVids._count = 0;

	// Works with either jQuery or Zepto
} )( window.jQuery || window.Zepto );
