services: add lohr

services/default.nix

@@ -9,6 +9,7 @@
     ./gitea.nix
     ./indexers.nix
     ./jellyfin.nix
+    ./lohr.nix
     ./matrix.nix
     ./miniflux.nix
     ./nextcloud.nix

services/lohr.nix

@@ -0,0 +1,91 @@
+# A simple Gitea webhook to mirror all my repositories
+{ config, lib, pkgs, ... }:
+let
+  cfg = config.my.services.lohr;
+  settingsFormat = pkgs.formats.yaml { };
+
+  domain = config.networking.domain;
+  lohrDomain = "lohr.${config.networking.domain}";
+
+  lohrPkg =
+    let
+      flake = builtins.getFlake "github:alarsyo/lohr?rev=e68fcf3e522fc055c1a42ad10ac24c97ee068742";
+    in
+    flake.defaultPackage."x86_64-linux"; # FIXME: use correct system
+in
+{
+  options.my.services.lohr = with lib; {
+    enable = mkEnableOption "Automatic gitea repositories mirroring";
+
+    port = mkOption {
+      type = types.port;
+      default = 9192;
+      example = 8080;
+      description = "Internal port of the Lohr service";
+    };
+
+    setting = mkOption rec {
+      type = settingsFormat.type;
+      apply = recursiveUpdate default;
+      default = {
+        default_remotes = [
+          "git@github.com:ambroisie"
+          "git@git.sr.ht:~ambroisie"
+        ];
+      };
+      description = "Global settings configuration file";
+    };
+
+    sharedSecretFile = mkOption {
+      type = types.str;
+      example = "/run/secrets/lohr.env";
+      description = "Shared secret between lohr and Gitea hook";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    systemd.services.lohr = {
+      wantedBy = [ "multi-user.target" ];
+      serviceConfig = {
+        EnvironmentFile = [
+          cfg.sharedSecretFile
+        ];
+        Environment = [
+          "ROCKET_PORT=${toString cfg.port}"
+          "ROCKET_LOG=normal"
+          "LOHR_HOME=/var/lib/lohr/"
+          "LOHR_CONFIG="
+        ];
+        ExecStart =
+          let
+            configFile = settingsFormat.generate "lohr-config.yaml" cfg.setting;
+          in
+          "${lohrPkg}/bin/lohr --config ${configFile}";
+        StateDirectory = "lohr";
+        WorkingDirectory = "/var/lib/lohr";
+        User = "lohr";
+        Group = "lohr";
+      };
+      path = with pkgs; [
+        git
+      ];
+    };
+
+    users.users.lohr = {
+      isSystemUser = true;
+      home = "/var/lib/lohr";
+      createHome = true;
+      group = "lohr";
+    };
+    users.groups.lohr = { };
+
+    services.nginx.virtualHosts."${lohrDomain}" = {
+      forceSSL = true;
+      useACMEHost = domain;
+
+      locations."/" = {
+        proxyPass = "http://127.0.0.1:${toString cfg.port}/";
+      };
+    };
+  };
+}