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{ config, pkgs, lib, ... }:
with lib;
let
dataDir = "/var/lib/tedicross";
cfg = config.services.tedicross;
configJSON = pkgs.writeText "tedicross-settings.json" (builtins.toJSON cfg.config);
configYAML = pkgs.runCommand "tedicross-settings.yaml" { preferLocalBuild = true; } ''
${pkgs.remarshal}/bin/json2yaml -i ${configJSON} -o $out
'';
in {
options = {
services.tedicross = {
enable = mkEnableOption "the TediCross Telegram-Discord bridge service";
config = mkOption {
type = types.attrs;
# from https://github.com/TediCross/TediCross/blob/master/example.settings.yaml
example = literalExpression ''
{
telegram = {
useFirstNameInsteadOfUsername = false;
colonAfterSenderName = false;
skipOldMessages = true;
sendEmojiWithStickers = true;
};
discord = {
useNickname = false;
skipOldMessages = true;
displayTelegramReplies = "embed";
replyLength = 100;
};
bridges = [
{
name = "Default bridge";
direction = "both";
telegram = {
chatId = -123456789;
relayJoinMessages = true;
relayLeaveMessages = true;
sendUsernames = true;
ignoreCommands = true;
};
discord = {
serverId = "DISCORD_SERVER_ID";
channelId = "DISCORD_CHANNEL_ID";
relayJoinMessages = true;
relayLeaveMessages = true;
sendUsernames = true;
crossDeleteOnTelegram = true;
};
}
];
debug = false;
}
'';
description = ''
<filename>settings.yaml</filename> configuration as a Nix attribute set.
Secret tokens should be specified using <option>environmentFile</option>
instead of this world-readable file.
'';
};
environmentFile = mkOption {
type = types.nullOr types.path;
default = null;
description = ''
File containing environment variables to be passed to the TediCross service,
in which secret tokens can be specified securely using the
<literal>TELEGRAM_BOT_TOKEN</literal> and <literal>DISCORD_BOT_TOKEN</literal>
keys.
'';
};
};
};
config = mkIf cfg.enable {
# from https://github.com/TediCross/TediCross/blob/master/guides/autostart/Linux.md
systemd.services.tedicross = {
description = "TediCross Telegram-Discord bridge service";
wantedBy = [ "multi-user.target" ];
wants = [ "network-online.target" ];
after = [ "network-online.target" ];
serviceConfig = {
Type = "simple";
ExecStart = "${pkgs.nodePackages.tedicross}/bin/tedicross --config='${configYAML}' --data-dir='${dataDir}'";
Restart = "always";
DynamicUser = true;
StateDirectory = baseNameOf dataDir;
EnvironmentFile = cfg.environmentFile;
};
};
};
meta.maintainers = with maintainers; [ pacien ];
}
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