# x-ua-xompatible header
add_header X-UA-Compatible IE=edge,chrome=1;

#default charset uft-8
charset utf-8;



# allowed domains
set $rewrite_var 0;
if ($host = 'mydomain.com') {
  set $rewrite_var 1;
}
if ($host = 'static.mydomain.com') {
  set $rewrite_var 1;
}
# rewrite not allowed domains to default
if ($rewrite_var = 0) {
  rewrite ^/(.*)$ http://mydomain.com/$1 permanent;
} 




# rewrite static domain to assets folder
if ($host = "static.chsmedien.com") {
  rewrite ^ /assets$uri last;
}




# expire headers for assets

# 1: images
location ~* ^(/assets/img/[^\.]+)(\.(?:jpe?g|png|gif))$ {
    expires 365d;
    
    # Serves static files in high resolution only if required
	# Naming convention for high resolution images:
	# [filename]@2x[extension], e.g.:
	# example@2x.png
	set $hidpi_uri $1@2x$2;

	if ($http_cookie !~ 'device-pixel-ratio=2') {
    	# If the device-pixel-ratio cookie is not set to 2, fall back to
    	# default behaviour, i.e. don't try to serve high resolution image
    	break;
    }
	
	# device-pixel-ratio cookie is set to 2
	# Serve high resolution image if available,
	# otherwise fall back to standard resolution
	try_files $hidpi_uri $uri =404;

}

# 2: js/css/webfonts
# with built-in filename-based cache busting
location ~ ^/assets/(\w+)/(.+)\.(\d+)\.(js|css|woff|eot|ttf|svg)$ {
	rewrite ^/assets/(\w+)/(.+)\.(\d+)\.(js|css|woff|eot|ttf|svg)$ /assets/$1/$2.$4;
	add_header Vary Accept-Encoding;
	expires max;
	break;
}

# without filename-based cache busting
location ~* \.(?:js|css)$ {
	add_header Vary Accept-Encoding;
	expires 12h;
}

location ~* \.(?:woff|eot|ttf|svg)$ {
	expires 30d;
}




# modx furls - eigher via statcache or via default modx rewrite

# statcache rewrite - http://modx.com/extras/package/statcache
location / {
	try_files /core/cache/statcache$uri~index.html /core/cache/statcache$uri $uri $uri/ @modx-rewrite;
}

# default modx furls rewrite
location / {
	try_files $uri $uri/ @modx-rewrite;
}