nginx template for redirect to admin

conf/nginx.conf

@@ -0,0 +1,6 @@
+location / {
+    if ($remote_addr ~ "^__IP4_NAT_PREFIX__.\d+$") {
+        return 302 __CAPTIVE_PORTAL_URL__;
+    }
+    return 302 https://$http_host/yunohost/admin;
+}

scripts/config

@@ -199,22 +199,11 @@ ynh_app_config_apply() {
     
     # Activate captive portal or not
     captive_portal=$(ynh_app_setting_get --app=$app --key=captive_portal)
-    if [[ "$captive_portal" == '1' ]]
-    then
-        echo "location / {" > /etc/nginx/conf.d/default.d/redirect_to_admin.conf
-        
-        echo "    if (\$remote_addr ~ "^$ip4_nat_prefix.\d+$") {" >> /etc/nginx/conf.d/default.d/redirect_to_admin.conf
-
-        echo "      return 302 $captive_portal_url;" >> /etc/nginx/conf.d/default.d/redirect_to_admin.conf
-
-        echo "    }" > /etc/nginx/conf.d/default.d/redirect_to_admin.conf
-        
-        echo "    return 302 https://\$http_host/yunohost/admin;" >> /etc/nginx/conf.d/default.d/redirect_to_admin.conf
-        
-        echo "}" >> /etc/nginx/conf.d/default.d/redirect_to_admin.conf
-        systemctl reload nginx
+    if [[ "${captive_portal}" -eq 1 ]]; then
+        ynh_config_add_nginx
 	    ynh_systemd_action --service_name=captiveportal_fakedns --action="start" --log_path=systemd
     else
+        ynh_config_remove_nginx
 	    ynh_systemd_action --service_name=captiveportal_fakedns --action="stop" --log_path=systemd
     fi