{ pkgs, lib, ... }:
let
  bridgeBotToken = lib.strings.fileContents <system-secrets/telegram/kmein.token>;
  config = {
    general = {
      RemoteNickFormat = "[{NOPINGNICK}] ";
      Charset = "utf-8";
    };
    telegram.kmein.Token = bridgeBotToken;
    irc.freenode = {
      Server = "irc.freenode.net:6667";
      Nick = "tg_bridge";
    };
    mumble.lassulus = {
      Server = "lassul.us:64738";
      Nick = "krebs_bridge";
      SkipTLSVerify = true;
    };
    gateway = [
      {
        name = "krebs-bridge";
        enable = true;
        inout = [
          {
            account = "irc.freenode";
            channel = "#krebs";
          }
          {
            account = "telegram.kmein";
            channel = "-330372458";
          }
          {
            account = "mumble.lassulus";
            channel = 6; # "nixos"
          }
        ];
      }
      {
        name = "myengadin-bridge";
        enable = true;
        inout = [
          {
            account = "irc.freenode";
            channel = "##myengadin";
          }
          {
            account = "telegram.kmein";
            channel = "-425759153";
          }
        ];
      }
    ];
  };
in
{
  nixpkgs.overlays = [
    (import <niveum/overlays/toml.nix>)
    (self: super: {
      matterbridge = (import (super.fetchFromGitHub {
        owner = "NixOS";
        repo = "nixpkgs";
        rev = "e45d91ee65db293a172ec506759d1248e40c35f5";
        sha256 = "03cjs5xcx09lw0djyrx2kfakw7gkg4iqmy9w25azai62im39l30k";
      }) {}).matterbridge;
    })
  ];

  services.matterbridge = {
    enable = true;
    configPath = toString (pkgs.writeTOML config);
  };
}