# configuration directives to support WP Fastest Cache plugin.
# note not all features are supported.

# default location block
# - directs mobile visitors to @mobileaccess, if configured.
# - directs cache misses to PHP (via @cachemiss).
# - directs requests "that shouldn't be cached" to PHP (via @cachemiss): example - requests from a logged-in user.

location / {
    error_page 418 = @cachemiss; # to handle cache misses
    error_page 419 = @mobileaccess; # to handle mobile visits
    recursive_error_pages on;
    
    set $pathDomain "/wp-content/cache/${host}/all${uri}"; # path domain for multisite
    set $path "/wp-content/cache/all${uri}";

    # bypass POST requests
    if ($request_method = POST) { return 418; }

    # uncommenting the following degrades the performance on certain sites. YMMV
    # if ($query_string != "") { return 418; }

    # bypass cache for common query strings
    if ($arg_s != "") { return 418; } # search query
    if ($arg_p != "") { return 418; } # request a post / page by ID
    if ($args ~ "amp") { return 418; } # amp test
    if ($arg_preview = "true") { return 418; } # preview post / page
    if ($arg_ao_noptimize != "") { return 418; } # support for Autoptimize plugin

    # if WP related cookies are found, skip cache
    if ($http_cookie ~* "wordpress_logged_in_") { return 418; }
    if ($http_cookie ~* "comment_author_") { return 418; }
    if ($http_cookie ~* "wp_postpass_") { return 418; }

    # avoid duplicate content on Amazon CloudFront and KeyCDN.
    if ( $http_user_agent = "Amazon CloudFront" ) { return 403; access_log off; }
    if ($http_x_pull = "KeyCDN") { return 403; access_log off; }

    # uncomment the following, if WP Fastest Cache plugin is set to create a separate cache for mobile visitors
    # if ( $http_user_agent ~* "2.0\ MMP|240x320|400X240|AvantGo|BlackBerry|Blazer|Cellphone|Danger|DoCoMo|Elaine/3.0|EudoraWeb|Googlebot-Mobile|hiptop|IEMobile|KYOCERA/WX310K|LG/U990|MIDP-2.|MMEF20|MOT-V|NetFront|Newt|Nintendo\ Wii|Nitro|Nokia|Opera\ Mini|Palm|PlayStation\ Portable|portalmmm|Proxinet|ProxiNet|SHARP-TQ-GX10|SHG-i900|Small|SonyEricsson|Symbian\ OS|SymbianOS|TS21i-10|UP.Browser|UP.Link|webOS|Windows\ CE|WinWAP|YahooSeeker/M1A1-R2D2|iPhone|iPod|Android|BlackBerry9530|LG-TU915\ Obigo|LGE\ VX|webOS|Nokia5800|iPad" ) { return 419; }
    # add_header "Vary" "User-Agent";

    # uncomment the following if deemed fit, in addition to the above line to enable @mobileaccess
    # if ( $http_user_agent ~* "w3c\ |w3c-|acs-|alav|alca|amoi|audi|avan|benq|bird|blac|blaz|brew|cell|cldc|cmd-|dang|doco|eric|hipt|htc_|inno|ipaq|ipod|jigs|kddi|keji|leno|lg-c|lg-d|lg-g|lge-|lg/u|maui|maxo|midp|mits|mmef|mobi|mot-|moto|mwbp|nec-|newt|noki|palm|pana|pant|phil|play|port|prox|qwap|sage|sams|sany|sch-|sec-|send|seri|sgh-|shar|sie-|siem|smal|smar|sony|sph-|symb|t-mo|teli|tim-|tosh|tsm-|upg1|upsi|vk-v|voda|wap-|wapa|wapi|wapp|wapr|webc|winw|winw|xda\ |xda-|ipad" ) { return 419; }

    # look for cached version; if-not-found, then send the request to PHP
    try_files "${path}index.html" "${path}/index.html" "${pathDomain}index.html" "${pathDomain}/index.html" $uri $uri/ /index.php$is_args$args;

    #--> all the following would apply, only if the request hits the cache

    # add some useful headers
    add_header "X-Cache" "HIT - WP Fastest Cache";
    add_header "X-CF-Powered-By" "WP Fastest Cache";
    add_header "Vary" "Cookie";
    # include "globals/hsts.conf";
    include 'globals/security-headers.conf';

    expires 30m;
    # expires modified 30m;
    add_header "Cache-Control" "must-revalidate";

    # For proxies
    # add_header "Cache-Control" "s-maxage=600";
}

# location to handle requests come from mobile devices
location @mobileaccess {
    set $pathDomain "/wp-content/cache/${host}/wpfc-mobile-cache${uri}"; # path domain for multisite
    set $path "/wp-content/cache/wpfc-mobile-cache${uri}";

    # look for cached version for mobiles; if-not-found, then send the request to PHP
    try_files "${path}index.html" "${path}/index.html" "${pathDomain}index.html" "${pathDomain}/index.html" $uri $uri/ /index.php$is_args$args;

    #--> all the following would apply, only if the request hits the cache

    # add some useful headers
    add_header "X-Cache" "HIT - Mobile - WP Fastest Cache";
    add_header "Vary" "User-Agent, Cookie";
    # include "globals/hsts.conf";
    include 'globals/security-headers.conf';

    expires 30m;
    # expires modified 30m;
    add_header "Cache-Control" "must-revalidate";

    # For proxies
    # add_header "Cache-Control" "s-maxage=600";
}

location @cachemiss {
    # on cache miss, send the request to PHP
    try_files $uri $uri/ /index.php$is_args$args;
}