1 files changed, 123 insertions, 0 deletions
diff --git a/nixos/modules/services/web-apps/silverbullet.nix b/nixos/modules/services/web-apps/silverbullet.nix
new file mode 100644
index 000000000000..a0c6ee34d262
--- /dev/null
+++ b/nixos/modules/services/web-apps/silverbullet.nix
@@ -0,0 +1,123 @@
+{ config
+, pkgs
+, lib
+, ...
+}:
+let
+  cfg = config.services.silverbullet;
+  defaultUser = "silverbullet";
+  defaultGroup = defaultUser;
+  defaultSpaceDir = "/var/lib/silverbullet";
+in
+{
+  options = {
+    services.silverbullet = {
+      enable = lib.mkEnableOption (lib.mdDoc "Silverbullet, an open-source, self-hosted, offline-capable Personal Knowledge Management (PKM) web application.");
+
+      package = lib.mkPackageOptionMD pkgs "silverbullet" { };
+
+      openFirewall = lib.mkOption {
+        type = lib.types.bool;
+        default = false;
+        description = lib.mdDoc "Open port in the firewall.";
+      };
+
+      listenPort = lib.mkOption {
+        type = lib.types.int;
+        default = 3000;
+        description = lib.mdDoc "Port to listen on.";
+      };
+
+      listenAddress = lib.mkOption {
+        type = lib.types.str;
+        default = "127.0.0.1";
+        description = lib.mdDoc "Address or hostname to listen on. Defaults to 127.0.0.1.";
+      };
+
+      spaceDir = lib.mkOption {
+        type = lib.types.path;
+        default = defaultSpaceDir;
+        example = "/home/yourUser/silverbullet";
+        description = lib.mdDoc ''
+          Folder to store Silverbullet's space/workspace.
+          By default it is located at `${defaultSpaceDir}`.
+        '';
+      };
+
+      user = lib.mkOption {
+        type = lib.types.str;
+        default = defaultUser;
+        example = "yourUser";
+        description = lib.mdDoc ''
+          The user to run Silverbullet as.
+          By default, a user named `${defaultUser}` will be created whose space
+          directory is [spaceDir](#opt-services.silverbullet.spaceDir).
+        '';
+      };
+
+      group = lib.mkOption {
+        type = lib.types.str;
+        default = defaultGroup;
+        example = "yourGroup";
+        description = lib.mdDoc ''
+          The group to run Silverbullet under.
+          By default, a group named `${defaultGroup}` will be created.
+        '';
+      };
+
+      envFile = lib.mkOption {
+        type = lib.types.nullOr lib.types.path;
+        default = null;
+        example = "/etc/silverbullet.env";
+        description = lib.mdDoc ''
+          File containing extra environment variables. For example:
+
+          ```
+          SB_USER=user:password
+          SB_AUTH_TOKEN=abcdefg12345
+          ```
+        '';
+      };
+
+      extraArgs = lib.mkOption {
+        type = lib.types.listOf lib.types.str;
+        default = [ ];
+        example = [ "--db /path/to/silverbullet.db" ];
+        description = lib.mdDoc "Extra arguments passed to silverbullet.";
+      };
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    systemd.services.silverbullet = {
+      description = "Silverbullet service";
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+
+      preStart = lib.mkIf (!lib.hasPrefix "/var/lib/" cfg.spaceDir) "mkdir -p '${cfg.spaceDir}'";
+      serviceConfig = {
+        Type = "simple";
+        User = "${cfg.user}";
+        Group = "${cfg.group}";
+        EnvironmentFile = lib.mkIf (cfg.envFile != null) "${cfg.envFile}";
+        StateDirectory = lib.mkIf (lib.hasPrefix "/var/lib/" cfg.spaceDir) (lib.last (lib.splitString "/" cfg.spaceDir));
+        ExecStart = "${lib.getExe cfg.package} --port ${toString cfg.listenPort} --hostname '${cfg.listenAddress}' '${cfg.spaceDir}' " + lib.concatStringsSep " " cfg.extraArgs;
+        Restart = "on-failure";
+      };
+    };
+
+    networking.firewall = lib.mkIf cfg.openFirewall {
+      allowedTCPPorts = [ cfg.listenPort ];
+    };
+
+    users.users.${defaultUser} = lib.mkIf (cfg.user == defaultUser) {
+      isSystemUser = true;
+      group = cfg.group;
+      description = "Silverbullet daemon user";
+    };
+
+    users.groups.${defaultGroup} = lib.mkIf (cfg.group == defaultGroup) { };
+  };
+
+  meta.maintainers = with lib.maintainers; [ aorith ];
+}