nixox: services: servarr: refactor starr config

Makes it slightly DRY-er and more readable.

modules/nixos/services/servarr/default.nix

@@ -2,94 +2,17 @@
 # Relevant link [1].
 #
 # [1]: https://youtu.be/I26Ql-uX6AM
-{ config, lib, ... }:
-let
-  cfg = config.my.services.servarr;
-
-  ports = {
-    lidarr = 8686;
-    radarr = 7878;
-    readarr = 8787;
-    sonarr = 8989;
-  };
-
-  mkService = service: {
-    services.${service} = {
-      enable = true;
-      group = "media";
-    };
-    # Set-up media group
-    users.groups.media = { };
-  };
-
-  mkRedirection = service: {
-    my.services.nginx.virtualHosts = {
-      ${service} = {
-        port = ports.${service};
-      };
-    };
-  };
-
-  mkFail2Ban = service: lib.mkIf cfg.${service}.enable {
-    services.fail2ban.jails = {
-      ${service} = ''
-        enabled = true
-        filter = ${service}
-        action = iptables-allports
-      '';
-    };
-
-    environment.etc = {
-      "fail2ban/filter.d/${service}.conf".text = ''
-        [Definition]
-        failregex = ^.*\|Warn\|Auth\|Auth-Failure ip <HOST> username .*$
-        journalmatch = _SYSTEMD_UNIT=${service}.service
-      '';
-    };
-  };
-
-  mkFullConfig = service: lib.mkIf cfg.${service}.enable (lib.mkMerge [
-    (mkService service)
-    (mkRedirection service)
-  ]);
-in
+{ lib, ... }:
 {
   imports = [
     ./bazarr.nix
+    (import ./starr.nix "lidarr")
+    (import ./starr.nix "radarr")
+    (import ./starr.nix "readarr")
+    (import ./starr.nix "sonarr")
   ];
 
   options.my.services.servarr = {
     enableAll = lib.mkEnableOption "media automation suite";
-
-    lidarr = {
-      enable = lib.mkEnableOption "Lidarr" // { default = cfg.enableAll; };
-    };
-
-    radarr = {
-      enable = lib.mkEnableOption "Radarr" // { default = cfg.enableAll; };
-    };
-
-    readarr = {
-      enable = lib.mkEnableOption "Readarr" // { default = cfg.enableAll; };
-    };
-
-    sonarr = {
-      enable = lib.mkEnableOption "Sonarr" // { default = cfg.enableAll; };
-    };
   };
-
-  config = (lib.mkMerge [
-    # Lidarr for music
-    (mkFullConfig "lidarr")
-    (mkFail2Ban "lidarr")
-    # Radarr for movies
-    (mkFullConfig "radarr")
-    (mkFail2Ban "radarr")
-    # Readarr for books
-    (mkFullConfig "readarr")
-    (mkFail2Ban "readarr")
-    # Sonarr for shows
-    (mkFullConfig "sonarr")
-    (mkFail2Ban "sonarr")
-  ]);
 }

modules/nixos/services/servarr/starr.nix

@@ -0,0 +1,51 @@
+# Templated *arr configuration
+starr:
+{ config, lib, ... }:
+let
+  cfg = config.my.services.servarr.${starr};
+  ports = {
+    lidarr = 8686;
+    radarr = 7878;
+    readarr = 8787;
+    sonarr = 8989;
+  };
+in
+{
+  options.my.services.servarr.${starr} = with lib; {
+    enable = lib.mkEnableOption (lib.toSentenceCase starr) // {
+      default = config.my.services.servarr.enableAll;
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    services.${starr} = {
+      enable = true;
+      group = "media";
+    };
+
+    # Set-up media group
+    users.groups.media = { };
+
+    my.services.nginx.virtualHosts = {
+      ${starr} = {
+        port = ports.${starr};
+      };
+    };
+
+    services.fail2ban.jails = {
+      ${starr} = ''
+        enabled = true
+        filter = ${starr}
+        action = iptables-allports
+      '';
+    };
+
+    environment.etc = {
+      "fail2ban/filter.d/${starr}.conf".text = ''
+        [Definition]
+        failregex = ^.*\|Warn\|Auth\|Auth-Failure ip <HOST> username .*$
+        journalmatch = _SYSTEMD_UNIT=${starr}.service
+      '';
+    };
+  };
+}