prestashop nginx rewrite rule

server {
       listen *:80;
       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=$1 last;
       rewrite ^/([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ /img/p/$1/$1$2$3.jpg last;
       rewrite ^/([0-9])([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ /img/p/$1/$2/$1$2$3$4.jpg last;
       rewrite ^/([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ /img/p/$1/$2/$3/$1$2$3$4$5.jpg last;
       rewrite ^/([0-9])([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ /img/p/$1/$2/$3/$4/$1$2$3$4$5$6.jpg last;
       rewrite ^/([0-9])([0-9])([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ /img/p/$1/$2/$3/$4/$5/$1$2$3$4$5$6$7.jpg last;
       rewrite ^/([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ /img/p/$1/$2/$3/$4/$5/$6/$1$2$3$4$5$6$7$8.jpg last;
       rewrite ^/([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ /img/p/$1/$2/$3/$4/$5/$6/$7/$1$2$3$4$5$6$7$8$9.jpg last;
       rewrite ^/([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])(-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+.jpg$ /img/p/$1/$2/$3/$4/$5/$6/$7/$8/$1$2$3$4$5$6$7$8$9$10.jpg last;
       rewrite ^/c/([0-9]+)(-[.*_a-zA-Z0-9-]*)(-[0-9]+)?/.+.jpg$ /img/c/$1$2$3.jpg last;
       rewrite ^/c/([a-zA-Z_-]+)(-[0-9]+)?/.+.jpg$ /img/c/$1$2.jpg last;
       rewrite ^/images_ie/?([^/]+).(jpe?g|png|gif)$ /js/jquery/plugins/fancybox/images/$1.$2 last;
       error_page 404 /index.php?controller=404;
       
       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;
       }
}