1 files changed, 155 insertions, 0 deletions
diff --git a/nixos/modules/services/networking/ergochat.nix b/nixos/modules/services/networking/ergochat.nix
new file mode 100644
index 00000000000..cfaf69fc613
--- /dev/null
+++ b/nixos/modules/services/networking/ergochat.nix
@@ -0,0 +1,155 @@
+{ config, lib, options, pkgs, ... }: let
+  cfg = config.services.ergochat;
+in {
+  options = {
+    services.ergochat = {
+
+      enable = lib.mkEnableOption "Ergo IRC daemon";
+
+      openFilesLimit = lib.mkOption {
+        type = lib.types.int;
+        default = 1024;
+        description = ''
+          Maximum number of open files. Limits the clients and server connections.
+        '';
+      };
+
+      configFile = lib.mkOption {
+        type = lib.types.path;
+        default = (pkgs.formats.yaml {}).generate "ergo.conf" cfg.settings;
+        defaultText = "generated config file from <literal>.settings</literal>";
+        description = ''
+          Path to configuration file.
+          Setting this will skip any configuration done via <literal>.settings</literal>
+        '';
+      };
+
+      settings = lib.mkOption {
+        type = (pkgs.formats.yaml {}).type;
+        description = ''
+          Ergo IRC daemon configuration file.
+          https://raw.githubusercontent.com/ergochat/ergo/master/default.yaml
+        '';
+        default = {
+          network = {
+            name = "testnetwork";
+          };
+          server = {
+            name = "example.com";
+            listeners = {
+              ":6667" = {};
+            };
+            casemapping = "permissive";
+            enforce-utf = true;
+            lookup-hostnames = false;
+            ip-cloaking = {
+              enabled = false;
+            };
+            forward-confirm-hostnames = false;
+            check-ident = false;
+            relaymsg = {
+              enabled = false;
+            };
+            max-sendq = "1M";
+            ip-limits = {
+              count = false;
+              throttle = false;
+            };
+          };
+          datastore = {
+            autoupgrade = true;
+            # this points to the StateDirectory of the systemd service
+            path = "/var/lib/ergo/ircd.db";
+          };
+          accounts = {
+            authentication-enabled = true;
+            registration = {
+              enabled = true;
+              allow-before-connect = true;
+              throttling = {
+                enabled = true;
+                duration = "10m";
+                max-attempts = 30;
+              };
+              bcrypt-cost = 4;
+              email-verification.enabled = false;
+            };
+            multiclient = {
+              enabled = true;
+              allowed-by-default = true;
+              always-on = "opt-out";
+              auto-away = "opt-out";
+            };
+          };
+          channels = {
+            default-modes = "+ntC";
+            registration = {
+              enabled = true;
+            };
+          };
+          limits = {
+            nicklen = 32;
+            identlen = 20;
+            channellen = 64;
+            awaylen = 390;
+            kicklen = 390;
+            topiclen = 390;
+          };
+          history = {
+            enabled = true;
+            channel-length = 2048;
+            client-length = 256;
+            autoresize-window = "3d";
+            autoreplay-on-join = 0;
+            chathistory-maxmessages = 100;
+            znc-maxmessages = 2048;
+            restrictions = {
+              expire-time = "1w";
+              query-cutoff = "none";
+              grace-period = "1h";
+            };
+            retention = {
+              allow-individual-delete = false;
+              enable-account-indexing = false;
+            };
+            tagmsg-storage = {
+              default = false;
+              whitelist = [
+                "+draft/react"
+                "+react"
+              ];
+            };
+          };
+        };
+      };
+
+    };
+  };
+  config = lib.mkIf cfg.enable {
+
+    environment.etc."ergo.yaml".source = cfg.configFile;
+
+    # merge configured values with default values
+    services.ergochat.settings =
+      lib.mapAttrsRecursive (_: lib.mkDefault) options.services.ergochat.settings.default;
+
+    systemd.services.ergochat = {
+      description = "Ergo IRC daemon";
+      wantedBy = [ "multi-user.target" ];
+      # reload is not applying the changed config. further investigation is needed
+      # at some point this should be enabled, since we don't want to restart for
+      # every config change
+      # reloadIfChanged = true;
+      restartTriggers = [ cfg.configFile ];
+      serviceConfig = {
+        ExecStart = "${pkgs.ergochat}/bin/ergo run --conf /etc/ergo.yaml";
+        ExecReload = "${pkgs.util-linux}/bin/kill -HUP $MAINPID";
+        DynamicUser = true;
+        StateDirectory = "ergo";
+        LimitNOFILE = toString cfg.openFilesLimit;
+      };
+    };
+
+  };
+  meta.maintainers = with lib.maintainers; [ lassulus tv ];
+}