<?php

// Generates semantic classes for BODY element
function thematic_body_class( $print = true ) {
	global $wp_query, $current_user;

	// It's surely a WordPress blog, right?
	$c = array('wordpress');

	// Applies the time- and date-based classes (below) to BODY element
	thematic_date_classes( time(), $c );

	// Generic semantic classes for what type of content is displayed
	is_front_page()  ? $c[] = 'home'       : null; // For the front page, if set
	is_home()        ? $c[] = 'blog'       : null; // For the blog posts page, if set
	is_archive()     ? $c[] = 'archive'    : null;
	is_date()        ? $c[] = 'date'       : null;
	is_search()      ? $c[] = 'search'     : null;
	is_paged()       ? $c[] = 'paged'      : null;
	is_attachment()  ? $c[] = 'attachment' : null;
	is_404()         ? $c[] = 'four04'     : null; // CSS does not allow a digit as first character

	// Special classes for BODY element when a singular post
	if ( is_singular() ) {
		$c[] = 'singular';
	} else {
		$c[] = 'not-singular';
	}

	// Special classes for BODY element when a single post
	if ( is_single() ) {
		$postID = $wp_query->post->ID;
		the_post();

        // Adds post slug class, prefixed by 'slug-'
        $c[] = 'slug-' . $wp_query->post->post_name;

		// Adds 'single' class and class with the post ID
		$c[] = 'single postid-' . $postID;

		// Adds classes for the month, day, and hour when the post was published
		if ( isset( $wp_query->post->post_date ) )
			thematic_date_classes( mysql2date( 'U', $wp_query->post->post_date ), $c, 's-' );

		// Adds category classes for each category on single posts
		if ( $cats = get_the_category() )
			foreach ( $cats as $cat )
				$c[] = 's-category-' . $cat->slug;

		// Adds tag classes for each tags on single posts
		if ( $tags = get_the_tags() )
			foreach ( $tags as $tag )
				$c[] = 's-tag-' . $tag->slug;

		// Adds MIME-specific classes for attachments
		if ( is_attachment() ) {
			$mime_type = get_post_mime_type();
			$mime_prefix = array( 'application/', 'image/', 'text/', 'audio/', 'video/', 'music/' );
				$c[] = 'attachmentid-' . $postID . ' attachment-' . str_replace( $mime_prefix, "", "$mime_type" );
		}

		// Adds author class for the post author
		$c[] = 's-author-' . sanitize_title_with_dashes(strtolower(get_the_author_login()));
		rewind_posts();
		
		// For posts with excerpts
		if (has_excerpt())
			$c[] = 's-has-excerpt';
			
		// For posts with comments open or closed
		if (comments_open()) {
			$c[] = 's-comments-open';		
		} else {
			$c[] = 's-comments-closed';
		}
	
		// For posts with pings open or closed
		if (pings_open()) {
			$c[] = 's-pings-open';
		} else {
			$c[] = 's-pings-closed';
		}
	
		// For password-protected posts
		if ( $post->post_password )
			$c[] = 's-protected';
	
		// For sticky posts
		if (is_sticky())
		   $c[] = 's-sticky';		
		
	}

	// Author name classes for BODY on author archives
	elseif ( is_author() ) {
		$author = $wp_query->get_queried_object();
		$c[] = 'author';
		$c[] = 'author-' . $author->user_nicename;
	}

	// Category name classes for BODY on category archvies
	elseif ( is_category() ) {
		$cat = $wp_query->get_queried_object();
		$c[] = 'category';
		$c[] = 'category-' . $cat->slug;
	}

	// Tag name classes for BODY on tag archives
	elseif ( is_tag() ) {
		$tags = $wp_query->get_queried_object();
		$c[] = 'tag';
		$c[] = 'tag-' . $tags->slug;
	}

	// Page author for BODY on 'pages'
	elseif ( is_page() ) {
		$pageID = $wp_query->post->ID;
		$page_children = wp_list_pages("child_of=$pageID&echo=0");
		the_post();

        // Adds post slug class, prefixed by 'slug-'
        $c[] = 'slug-' . $wp_query->post->post_name;

		$c[] = 'page pageid-' . $pageID;
		
		$c[] = 'page-author-' . sanitize_title_with_dashes(strtolower(get_the_author('login')));
		
		// Checks to see if the page has children and/or is a child page; props to Adam
		if ( $page_children )
			$c[] = 'page-parent';
		if ( $wp_query->post->post_parent )
			$c[] = 'page-child parent-pageid-' . $wp_query->post->post_parent;
			
		// For pages with excerpts
		if (has_excerpt())
			$c[] = 'page-has-excerpt';
			
		// For pages with comments open or closed
		if (comments_open()) {
			$c[] = 'page-comments-open';		
		} else {
			$c[] = 'page-comments-closed';
		}
	
		// For pages with pings open or closed
		if (pings_open()) {
			$c[] = 'page-pings-open';
		} else {
			$c[] = 'page-pings-closed';
		}
	
		// For password-protected pages
		if ( $post->post_password )
			$c[] = 'page-protected';			
			
		// Checks to see if the page is using a template	
		if ( is_page_template() & !is_page_template('default') )
			$c[] = 'page-template page-template-' . str_replace( '.php', '-php', get_post_meta( $pageID, '_wp_page_template', true ) );
		rewind_posts();
	}

	// Search classes for results or no results
	elseif ( is_search() ) {
		the_post();
		if ( have_posts() ) {
			$c[] = 'search-results';
		} else {
			$c[] = 'search-no-results';
		}
		rewind_posts();
	}

	// For when a visitor is logged in while browsing
	if ( $current_user->ID )
		$c[] = 'loggedin';

	// Paged classes; for 'page X' classes of index, single, etc.
	if ( ( ( $page = $wp_query->get('paged') ) || ( $page = $wp_query->get('page') ) ) && $page > 1 ) {
	// Thanks to Prentiss Riddle, twitter.com/pzriddle, for the security fix below. 
 			$page = intval($page); // Ensures that an integer (not some dangerous script) is passed for the variable
		$c[] = 'paged-' . $page;
		if ( is_single() ) {
			$c[] = 'single-paged-' . $page;
		} elseif ( is_page() ) {
			$c[] = 'page-paged-' . $page;
		} elseif ( is_category() ) {
			$c[] = 'category-paged-' . $page;
		} elseif ( is_tag() ) {
			$c[] = 'tag-paged-' . $page;
		} elseif ( is_date() ) {
			$c[] = 'date-paged-' . $page;
		} elseif ( is_author() ) {
			$c[] = 'author-paged-' . $page;
		} elseif ( is_search() ) {
			$c[] = 'search-paged-' . $page;
		}
	}
	
	// A little Browser detection shall we?
	$browser = $_SERVER[ 'HTTP_USER_AGENT' ];
	
	// Mac, PC ...or Linux
	if ( preg_match( "/Mac/", $browser ) ){
			$c[] = 'mac';
		
	} elseif ( preg_match( "/Windows/", $browser ) ){
			$c[] = 'windows';
		
	} elseif ( preg_match( "/Linux/", $browser ) ) {
			$c[] = 'linux';

	} else {
			$c[] = 'unknown-os';
	}
	
	// Checks browsers in this order: Chrome, Safari, Opera, MSIE, FF
	if ( preg_match( "/Chrome/", $browser ) ) {
			$c[] = 'chrome';

			preg_match( "/Chrome\/(\d.\d)/si", $browser, $matches);
			$ch_version = 'ch' . str_replace( '.', '-', $matches[1] );      
			$c[] = $ch_version;

	} elseif ( preg_match( "/Safari/", $browser ) ) {
			$c[] = 'safari';
			
			preg_match( "/Version\/(\d.\d)/si", $browser, $matches);
			$sf_version = 'sf' . str_replace( '.', '-', $matches[1] );      
			$c[] = $sf_version;
			
	} elseif ( preg_match( "/Opera/", $browser ) ) {
			$c[] = 'opera';
			
			preg_match( "/Opera\/(\d.\d)/si", $browser, $matches);
			$op_version = 'op' . str_replace( '.', '-', $matches[1] );      
			$c[] = $op_version;
			
	} elseif ( preg_match( "/MSIE/", $browser ) ) {
			$c[] = 'msie';
			
			if( preg_match( "/MSIE 6.0/", $browser ) ) {
					$c[] = 'ie6';
			} elseif ( preg_match( "/MSIE 7.0/", $browser ) ){
					$c[] = 'ie7';
			} elseif ( preg_match( "/MSIE 8.0/", $browser ) ){
					$c[] = 'ie8';
			}
			
	} elseif ( preg_match( "/Firefox/", $browser ) && preg_match( "/Gecko/", $browser ) ) {
			$c[] = 'firefox';
			
			preg_match( "/Firefox\/(\d)/si", $browser, $matches);
			$ff_version = 'ff' . str_replace( '.', '-', $matches[1] );      
			$c[] = $ff_version;
			
	} else {
			$c[] = 'unknown-browser';
	}
	
	

	// Separates classes with a single space, collates classes for BODY
	$c = join( ' ', apply_filters( 'body_class',  $c ) ); // Available filter: body_class

	// And tada!
	return $print ? print($c) : $c;
}

// Generates semantic classes for each post DIV element
function thematic_post_class( $print = true ) {
	global $post, $thematic_post_alt;

	// hentry for hAtom compliace, gets 'alt' for every other post DIV, describes the post type and p[n]
	$c = array( 'hentry', "p$thematic_post_alt", $post->post_type, $post->post_status );

	// Author for the post queried
	$c[] = 'author-' . sanitize_title_with_dashes(strtolower(get_the_author('login')));

	// Category for the post queried
	foreach ( (array) get_the_category() as $cat )
		$c[] = 'category-' . $cat->slug;

	// Tags for the post queried; if not tagged, use .untagged
	if ( get_the_tags() == null ) {
		$c[] = 'untagged';
	} else {
		foreach ( (array) get_the_tags() as $tag )
			$c[] = 'tag-' . $tag->slug;
	}

	// For posts with excerpts
	if (has_excerpt())
		$c[] = 'has-excerpt';
		
	// For posts with comments open or closed
	if (comments_open()) {
		$c[] = 'comments-open';		
	} else {
		$c[] = 'comments-closed';
	}

	// For posts with pings open or closed
	if (pings_open()) {
		$c[] = 'pings-open';
	} else {
		$c[] = 'pings-closed';
	}

	// For password-protected posts
	if ( $post->post_password )
		$c[] = 'protected';

	// For sticky posts
	if (is_sticky())
	   $c[] = 'sticky';

	// Applies the time- and date-based classes (below) to post DIV
	thematic_date_classes( mysql2date( 'U', $post->post_date ), $c );

	// If it's the other to the every, then add 'alt' class
	if ( ++$thematic_post_alt % 2 )
		$c[] = 'alt';

    // Adds post slug class, prefixed by 'slug-'
    $c[] = 'slug-' . $post->post_name;

	// Separates classes with a single space, collates classes for post DIV
	$c = join( ' ', apply_filters( 'post_class', $c ) ); // Available filter: post_class

	// And tada!
	return $print ? print($c) : $c;
}

// Define the num val for 'alt' classes (in post DIV and comment LI)
$thematic_post_alt = 1;

// Generates semantic classes for each comment LI element
function thematic_comment_class( $print = true ) {
	global $comment, $post, $thematic_comment_alt, $comment_depth, $comment_thread_alt;

	// Collects the comment type (comment, trackback),
	$c = array( $comment->comment_type );

	// Counts trackbacks (t[n]) or comments (c[n])
	if ( $comment->comment_type == 'comment' ) {
		$c[] = "c$thematic_comment_alt";
	} else {
		$c[] = "t$thematic_comment_alt";
	}

	// If the comment author has an id (registered), then print the log in name
	if ( $comment->user_id > 0 ) {
		$user = get_userdata($comment->user_id);
		// For all registered users, 'byuser'; to specificy the registered user, 'commentauthor+[log in name]'
		$c[] = 'byuser comment-author-' . sanitize_title_with_dashes(strtolower( $user->user_login ));
		// For comment authors who are the author of the post
		if ( $comment->user_id === $post->post_author )
			$c[] = 'bypostauthor';
	}

	// If it's the other to the every, then add 'alt' class; collects time- and date-based classes
	thematic_date_classes( mysql2date( 'U', $comment->comment_date ), $c, 'c-' );
	if ( ++$thematic_comment_alt % 2 )
		$c[] = 'alt';

	// Comment depth
	$c[] = "depth-$comment_depth";

	// Separates classes with a single space, collates classes for comment LI
	$c = join( ' ', apply_filters( 'comment_class', $c ) ); // Available filter: comment_class

	// Tada again!
	return $print ? print($c) : $c;
}

// Generates time- and date-based classes for BODY, post DIVs, and comment LIs; relative to GMT (UTC)
function thematic_date_classes( $t, &$c, $p = '' ) {
	$t = $t + ( get_option('gmt_offset') * 3600 );
	$c[] = $p . 'y' . gmdate( 'Y', $t ); // Year
	$c[] = $p . 'm' . gmdate( 'm', $t ); // Month
	$c[] = $p . 'd' . gmdate( 'd', $t ); // Day
	$c[] = $p . 'h' . gmdate( 'H', $t ); // Hour
}

// Remember: Thematic, like The Sandbox, is for play.
?>