1 files changed, 93 insertions, 0 deletions
diff --git a/modules/fathom.nix b/modules/fathom.nix
new file mode 100644
index 0000000..dee34b9
--- /dev/null
+++ b/modules/fathom.nix
@@ -0,0 +1,93 @@
+{ options
+, lib
+, config
+, pkgs
+, modulesPath
+}:
+
+with lib;
+
+let
+  cfg = config.services.fathom;
+in
+{
+  options.services.fathom = {
+    enable = lib.mkEnableOption "Enable the Fathom Analytics service";
+
+    port = mkOption {
+      type = types.string;
+      default = "3000";
+      description = ''
+        The port on which Fathom will listen for
+        incoming HTTP traffic.
+      '';
+    };
+
+    gzip = mkOption {
+      type = types.bool;
+      default = true;
+      description = "Whether or not to enable gzip compression.";
+    };
+
+    debug = mkOption {
+      type = types.bool;
+      default = false;
+      description = "Whether or not to enable debug mode.";
+    };
+
+    dataDir = mkOption {
+      type = types.path;
+      default = "/var/lib/fathom";
+      description = "Fathom data directory";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    systemd.services.fathom = {
+      wantedBy = [ "multi-user.target" ];
+      after = [ "network.target" ];
+
+      environment = {
+        FATHOM_SERVER_ADDR = cfg.port;
+        FATHOM_GZIP = builtins.toString cfg.gzip;
+        FATHOM_DEBUG = builtins.toString cfg.debug;
+        FATHOM_DATABASE_DRIVER = "sqlite3";
+        FATHOM_DATABASE_NAME = "${cfg.dataDir}/fathom.db";
+        FATHOM_SECRET = "random-secret-string";
+      };
+      preStart = ''
+        echo "[fathom] creating ${cfg.dataDir}"
+        mkdir -p ${cfg.dataDir}
+        chown -R fathom:fathom ${cfg.dataDir}
+        echo "[fathom]" creating ${cfg.dataDir}/.env
+        env | grep "^FATHOM" > ${cfg.dataDir}/.env
+      '';
+      description = ''
+        Fathom Analytics
+      '';
+
+      serviceConfig = {
+        Type = "simple";
+        User = "fathom";
+        Group = "fathom";
+        ExecStart = "${pkgs.fathom}/bin/fathom server";
+        KillSignal = "INT";
+        WorkingDirectory = cfg.dataDir;
+        Restart = "on-failure";
+        RestartSec = "10";
+        PermissionsStartOnly = "true";
+      };
+    };
+
+    environment.systemPackages = [ pkgs.fathom ];
+
+    users = {
+      groups = { fathom = {}; };
+      users.fathom = {
+        description = "Fathom daemon user";
+        home = cfg.dataDir;
+        group = "fathom";
+      };
+    };
+  };
+}