# Static file serving
location /static/ {
    alias /static/;
    gzip on;
    gzip_vary on;
    gzip_proxied any;
    gzip_types text/plain application/javascript application/x-javascript text/javascript text/xml text/css;
    expires 365d;
    access_log /dev/null;
}

# Geojson files
location /uploads/  {
    alias /data/;
    expires 30d;
}

location /favicon.ico {
    alias /static/favicon.ico;
}

# X-Accel-Redirect
location /internal/ {
    internal;
    gzip_vary on;
    gzip_static on;
    add_header X-DataLayer-Version $upstream_http_x_datalayer_version;
    alias /data/;
}

# Ajax proxy
location ~ ^/proxy/(.*) {
    internal;
    add_header X-Proxy-Cache $upstream_cache_status always;
    proxy_cache_background_update on;
    proxy_cache_use_stale updating;
    proxy_cache ajax_proxy;
    proxy_cache_valid 1m;  # Default. Umap will override using X-Accel-Expires
    set $target_url $1;
    # URL is encoded, so we need a few hack to clean it back.
    if ( $target_url ~ (.+)%3A%2F%2F(.+) ){ # fix :// between scheme and destination
      set $target_url $1://$2;
    }
    if ( $target_url ~ (.+?)%3A(.*) ){ # fix : between destination and port
      set $target_url $1:$2;
    }
    if ( $target_url ~ (.+?)%2F(.*) ){ # fix / after port, the rest will be decoded by proxy_pass
      set $target_url $1/$2;
    }
    resolver 8.8.8.8;
    add_header X-Proxy-Target $target_url; # For debugging
    proxy_pass_request_headers off;
    proxy_set_header Content-Type $http_content_type;
    proxy_set_header Content-Encoding $http_content_encoding;
    proxy_set_header Content-Length $http_content_length;
    proxy_read_timeout 10s;
    proxy_connect_timeout 5s;
    proxy_ssl_server_name on;
    proxy_pass $target_url;
    proxy_intercept_errors on;
    error_page 301 302 307 = @handle_proxy_redirect;
}
location @handle_proxy_redirect {
    resolver 8.8.8.8;
    set $saved_redirect_location '$upstream_http_location';
    proxy_pass $saved_redirect_location;
}