simplify caddy vhosts

hosts/flora-6/apps/caddy.nix

@@ -9,27 +9,30 @@
     "d '/data/srv/www/os/download/' 0750 hakkonaut hakkonaut - -"
   ];
 
-  services.caddy = {
+  services.caddy =
+    let
+      mkRevProxyVhost = addr: {
+        logFormat = lib.mkForce "output discard";
+        extraConfig = "reverse_proxy ${addr}";
+      };
+    in
+    {
       enable = lib.mkForce true;
       group = "hakkonaut";
       email = "admins@pub.solar";
       enableReload = true;
+
       globalConfig = lib.mkForce ''
         grace_period 60s
       '';
+
       virtualHosts = {
-      "ci.pub.solar" = {
-        logFormat = lib.mkForce ''
-          output discard
-        '';
-        extraConfig = ''
-          reverse_proxy :4000
-        '';
-      };
+        "ci.pub.solar" = mkRevProxyVhost ":4000";
+        "alerts.pub.solar" = mkRevProxyVhost "10.7.6.2:${toString config.services.prometheus.alertmanager.port}";
+        "grafana.pub.solar" = mkRevProxyVhost ":${toString config.services.grafana.settings.server.http_port}";
+        "obs-portal.pub.solar" = mkRevProxyVhost "obs-portal.svc.e5756d08-36fd-424b-f8bc-acdb92ca7b82.lev-1.int.greenbaum.zone:3000";
         "flora-6.pub.solar" = {
-        logFormat = lib.mkForce ''
-          output discard
-        '';
+          logFormat = lib.mkForce "output discard";
           extraConfig = ''
             basicauth * {
               hakkonaut $2a$14$mmIAy/Ezm6YGohUtXa2mWeW6Bcw1MQXPhrRbz14jAD2iUu3oob/t.
@@ -37,31 +40,8 @@
             reverse_proxy :${toString config.services.loki.configuration.server.http_listen_port}
           '';
         };
-      "alerts.pub.solar" = {
-        logFormat = lib.mkForce ''
-          output discard
-        '';
-        extraConfig = ''
-        reverse_proxy 10.7.6.2:${toString config.services.prometheus.alertmanager.port}
-        '';
-      };
-      "grafana.pub.solar" = {
-        logFormat = lib.mkForce ''
-          output discard
-        '';
-        extraConfig = ''
-          reverse_proxy :${toString config.services.grafana.settings.server.http_port}
-        '';
-      };
-      "obs-portal.pub.solar" = {
-        logFormat = lib.mkForce ''
-          output discard
-        '';
-        extraConfig = ''
-          reverse_proxy obs-portal.svc.e5756d08-36fd-424b-f8bc-acdb92ca7b82.lev-1.int.greenbaum.zone:3000
-        '';
-      };
       };
     };
+
   networking.firewall.allowedTCPPorts = [ 80 443 ];
 }