noisebell/remote/zulip-bot/module.nix

111 lines
3.1 KiB
Nix

pkg:
{ config, lib, ... }:
let
cfg = config.services.noisebell-zulip;
bin = "${pkg}/bin/noisebell-zulip";
in
{
options.services.noisebell-zulip = {
enable = lib.mkEnableOption "noisebell Zulip bridge";
domain = lib.mkOption {
type = lib.types.nullOr lib.types.str;
default = null;
description = "Optional domain for the Caddy virtual host.";
};
port = lib.mkOption {
type = lib.types.port;
default = 3003;
};
zulipUrl = lib.mkOption {
type = lib.types.str;
description = "Base URL of the Zulip server (for example https://chat.example.com).";
};
botEmail = lib.mkOption {
type = lib.types.str;
description = "Email address for the Zulip bot user.";
};
apiKeyFile = lib.mkOption {
type = lib.types.path;
description = "Path to file containing the Zulip bot API key.";
};
stream = lib.mkOption {
type = lib.types.str;
description = "Zulip stream that receives Noisebell updates.";
};
topic = lib.mkOption {
type = lib.types.str;
default = "noisebell";
description = "Zulip topic used for Noisebell updates.";
};
imageBaseUrl = lib.mkOption {
type = lib.types.str;
default = "https://noisebell.extremist.software/image";
description = "Base URL for status images linked in Zulip messages.";
};
webhookSecretFile = lib.mkOption {
type = lib.types.path;
description = "Path to file containing the inbound webhook bearer token.";
};
};
config = lib.mkIf cfg.enable (
{
users.users.noisebell-zulip = {
isSystemUser = true;
group = "noisebell-zulip";
};
users.groups.noisebell-zulip = { };
systemd.services.noisebell-zulip = {
description = "Noisebell Zulip bridge";
wantedBy = [ "multi-user.target" ];
after = [ "network-online.target" ];
wants = [ "network-online.target" ];
environment = {
NOISEBELL_ZULIP_PORT = toString cfg.port;
NOISEBELL_ZULIP_SITE_URL = cfg.zulipUrl;
NOISEBELL_ZULIP_BOT_EMAIL = cfg.botEmail;
NOISEBELL_ZULIP_STREAM = cfg.stream;
NOISEBELL_ZULIP_TOPIC = cfg.topic;
NOISEBELL_ZULIP_IMAGE_BASE_URL = cfg.imageBaseUrl;
RUST_LOG = "info";
};
script = ''
export NOISEBELL_ZULIP_API_KEY="$(cat ${cfg.apiKeyFile})"
export NOISEBELL_ZULIP_WEBHOOK_SECRET="$(cat ${cfg.webhookSecretFile})"
exec ${bin}
'';
serviceConfig = {
Type = "simple";
Restart = "on-failure";
RestartSec = 5;
User = "noisebell-zulip";
Group = "noisebell-zulip";
NoNewPrivileges = true;
ProtectSystem = "strict";
ProtectHome = true;
PrivateTmp = true;
ProtectKernelTunables = true;
ProtectKernelModules = true;
ProtectControlGroups = true;
RestrictSUIDSGID = true;
};
};
}
// lib.mkIf (cfg.domain != null) {
services.caddy.virtualHosts.${cfg.domain}.extraConfig = ''
reverse_proxy localhost:${toString cfg.port}
'';
}
);
}