server-configuration/services/komga.nix

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{ config, pkgs, lib, ... }:
with lib;
let
cfg = config.services.komgaCustom;
settingsFormat = pkgs.formats.yaml {};
in
{
options = {
services.komgaCustom = {
enable = mkEnableOption (lib.mdDoc "Komga, a free and open source comics/mangas media server");
port = mkOption {
type = types.port;
default = 25600;
description = lib.mdDoc ''
The port that Komga will listen on.
'';
};
user = mkOption {
type = types.str;
default = "komga";
description = lib.mdDoc ''
User account under which Komga runs.
'';
};
group = mkOption {
type = types.str;
default = "komga";
description = lib.mdDoc ''
Group under which Komga runs.
'';
};
stateDir = mkOption {
type = types.str;
default = "/var/lib/komga";
description = lib.mdDoc ''
State and configuration directory Komga will use.
'';
};
openFirewall = mkOption {
type = types.bool;
default = false;
description = lib.mdDoc ''
Whether to open the firewall for the port in {option}`services.komga.port`.
'';
};
settings = mkOption {
type = settingsFormat.type;
default = {};
description = lib.mdDoc ''
Configuration for application.yaml, see
<link xlink:href="https://komga.org/docs/installation/configuration"
for supported settings.
'';
};
};
};
config = mkIf cfg.enable {
networking.firewall.allowedTCPPorts = mkIf cfg.openFirewall [ cfg.port ];
users.groups = mkIf (cfg.group == "komga") {
komga = {};
};
users.users = mkIf (cfg.user == "komga") {
komga = {
group = cfg.group;
home = cfg.stateDir;
description = "Komga Daemon user";
isSystemUser = true;
};
};
systemd.services.komgaCustom = {
environment = {
SERVER_PORT = builtins.toString cfg.port;
KOMGA_CONFIGDIR = cfg.stateDir;
};
description = "Komga is a free and open source comics/mangas media server";
wantedBy = [ "multi-user.target" ];
wants = [ "network-online.target" ];
after = [ "network-online.target" ];
serviceConfig = {
User = cfg.user;
Group = cfg.group;
Type = "simple";
Restart = "on-failure";
ExecStartPre = pkgs.writeShellScript "komga-config-setup" ''
ln -sf ${settingsFormat.generate "application.yml" cfg.settings} ${cfg.stateDir}/application.yml
'';
ExecStart = "${pkgs.komga}/bin/komga";
StateDirectory = mkIf (cfg.stateDir == "/var/lib/komga") "komga";
};
};
};
}