prestashop nginx rewrite rule

server {
       listen *:;
       server_name www.mydomain.com *.mydomain.com;
       root /var/www/www.mydomain.com/web;

       if ($http_host != "www.mydomain.com") {
                 rewrite ^ http://www.mydomain.com$request_uri permanent;
       }

       index index.php index.html;

       location = /favicon.ico {
                log_not_found off;
                access_log off;
       }

       location = /robots.txt {
                allow all;
                log_not_found off;
                access_log off;
       }

       # Deny all for .htaccess, .htpasswd, .DS_Store (Mac).
       location ~ /\. {
                deny all;
                access_log off;
                log_not_found off;
       }

       rewrite ^/api/?(.*)$ /webservice/dispatcher.php?url=$ last;
       rewrite ^/([-])(\-[_a-zA-Z0--]*)?(-[-]+)?/.+\.jpg$ /img/p/$/$$$.jpg last;
       rewrite ^/([-])([-])(\-[_a-zA-Z0--]*)?(-[-]+)?/.+\.jpg$ /img/p/$/$/$$$$.jpg last;
       rewrite ^/([-])([-])([-])(\-[_a-zA-Z0--]*)?(-[-]+)?/.+\.jpg$ /img/p/$/$/$/$$$$$.jpg last;
       rewrite ^/([-])([-])([-])([-])(\-[_a-zA-Z0--]*)?(-[-]+)?/.+\.jpg$ /img/p/$/$/$/$/$$$$$$.jpg last;
       rewrite ^/([-])([-])([-])([-])([-])(\-[_a-zA-Z0--]*)?(-[-]+)?/.+\.jpg$ /img/p/$/$/$/$/$/$$$$$$$.jpg last;
       rewrite ^/([-])([-])([-])([-])([-])([-])(\-[_a-zA-Z0--]*)?(-[-]+)?/.+\.jpg$ /img/p/$/$/$/$/$/$/$$$$$$$$.jpg last;
       rewrite ^/([-])([-])([-])([-])([-])([-])([-])(\-[_a-zA-Z0--]*)?(-[-]+)?/.+\.jpg$ /img/p/$/$/$/$/$/$/$/$$$$$$$$$.jpg last;
       rewrite ^/([-])([-])([-])([-])([-])([-])([-])([-])(\-[_a-zA-Z0--]*)?(-[-]+)?/.+\.jpg$ /img/p/$/$/$/$/$/$/$/$/$$$$$$$$$$.jpg last;
       rewrite ^/c/([-]+)(\-[\.*_a-zA-Z0--]*)(-[-]+)?/.+\.jpg$ /img/c/$$$.jpg last;
       rewrite ^/c/([a-zA-Z_-]+)(-[-]+)?/.+\.jpg$ /img/c/$$.jpg last;
       rewrite ^/images_ie/?([^/]+)\.(jpe?g|png|gif)$ /js/jquery/plugins/fancybox/images/$.$ last;
       error_page  /index.php?controller=;

       location ~* \.(gif)$ {
          expires 2592000s;
       }
       location ~* \.(jpeg|jpg)$ {
          expires 2592000s;
       }
       location ~* \.(png)$ {
          expires 2592000s;
       }
       location ~* \.(css)$ {
          expires 604800s;
       }
       location ~* \.(js|jsonp)$ {
          expires 604800s;
       }
       location ~* \.(js)$ {
          expires 604800s;
       }
       location ~* \.(ico)$ {
          expires 31536000s;
       }
}