From 4cdbebe7f9e929801ece7517668593121763a28b Mon Sep 17 00:00:00 2001
From: Yisroel Baum <yisroel.d.baum@gmail.com>
Date: Mon, 17 Aug 2026 23:52:24 +0300
Subject: [PATCH] add frontend redirect hosts

---
 README.md            |  5 ++-
 nix/nixos-module.nix | 90 +++++++++++++++++++++++++-------------------
 2 files changed, 55 insertions(+), 40 deletions(-)

diff --git a/README.md b/README.md
index 2360599..60ae8d3 100644
--- a/README.md
+++ b/README.md
@@ -417,7 +417,10 @@ Example host configuration:
                     config.sops.secrets."borg-private-key".path;
                 };
 
-                frontend.hostName = "rabbigerzi.com";
+                frontend = {
+                  hostName = "rabbigerzi.com";
+                  redirectHostNames = [ "www.rabbigerzi.com" ];
+                };
 
                 backend = {
                   hostName = "api.rabbigerzi.com";
diff --git a/nix/nixos-module.nix b/nix/nixos-module.nix
index 30f8ddf..2a04c00 100644
--- a/nix/nixos-module.nix
+++ b/nix/nixos-module.nix
@@ -120,6 +120,12 @@ in
         description = "Frontend nginx virtual host name.";
       };
 
+      redirectHostNames = lib.mkOption {
+        type = lib.types.listOf lib.types.str;
+        default = [ ];
+        description = "Frontend host names that redirect to the canonical host.";
+      };
+
       publicUrl = lib.mkOption {
         type = lib.types.str;
         default = "https://${cfg.frontend.hostName}";
@@ -403,49 +409,55 @@ in
       recommendedProxySettings = lib.mkDefault true;
       recommendedTlsSettings = lib.mkDefault true;
 
-      virtualHosts = {
-        ${cfg.frontend.hostName} = lib.mkMerge [
-          cfg.frontend.nginx
-          {
-            root = "${frontendPackage}";
-            locations."/" = {
-              tryFiles = "$uri $uri/ /index.html";
-            };
-          }
-        ];
-
-        ${cfg.backend.hostName} = lib.mkMerge [
-          cfg.backend.nginx
-          {
-            root = "${appDir}/public";
-            extraConfig = ''
-              client_max_body_size ${uploadLimits.nginxClientMaxBodySize};
-            '';
-            locations = {
-              "/" = {
-                index = "index.php";
-                tryFiles = "$uri $uri/ /index.php?$query_string";
+      virtualHosts =
+        lib.genAttrs cfg.frontend.redirectHostNames (redirectHostName: {
+          enableACME = true;
+          forceSSL = true;
+          globalRedirect = cfg.frontend.hostName;
+        })
+        // {
+          ${cfg.frontend.hostName} = lib.mkMerge [
+            cfg.frontend.nginx
+            {
+              root = "${frontendPackage}";
+              locations."/" = {
+                tryFiles = "$uri $uri/ /index.html";
               };
+            }
+          ];
 
-              "/storage/" = {
-                alias = "${storagePath}/app/public/";
-                extraConfig = ''
-                  expires 30d;
-                  access_log off;
-                '';
-              };
+          ${cfg.backend.hostName} = lib.mkMerge [
+            cfg.backend.nginx
+            {
+              root = "${appDir}/public";
+              extraConfig = ''
+                client_max_body_size ${uploadLimits.nginxClientMaxBodySize};
+              '';
+              locations = {
+                "/" = {
+                  index = "index.php";
+                  tryFiles = "$uri $uri/ /index.php?$query_string";
+                };
 
-              "~ \\.php$" = {
-                extraConfig = ''
-                  include ${pkgs.nginx}/conf/fastcgi_params;
-                  fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
-                  fastcgi_pass unix:${config.services.phpfpm.pools.${poolName}.socket};
-                '';
+                "/storage/" = {
+                  alias = "${storagePath}/app/public/";
+                  extraConfig = ''
+                    expires 30d;
+                    access_log off;
+                  '';
+                };
+
+                "~ \\.php$" = {
+                  extraConfig = ''
+                    include ${pkgs.nginx}/conf/fastcgi_params;
+                    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
+                    fastcgi_pass unix:${config.services.phpfpm.pools.${poolName}.socket};
+                  '';
+                };
               };
-            };
-          }
-        ];
-      };
+            }
+          ];
+        };
     };
   };
 }