zion/modules/communication.nix

{ config, lib, pkgs, ... }:

with pkgs;

# NOTE Reference the environment variable set in the corresponding agenix secret
let database.connection_string = "$DB_STRING";

in {
  # Matrix server configuration
  services.dendrite = {
    enable = true;
    httpPort = 8008;
    environmentFile = config.age.secrets.dendrite-postgres.path;
    loadCredential = [ "private_key:${config.age.secrets.dendrite.path}" ];
    settings = {
      global = {
        server_name = "coolneng.duckdns.org";
        private_key = config.age.secrets.dendrite.path;
        inherit database;
      };
      # HACK Inherit postgres connection string for the rest of the DBs
      app_service_api = {
        inherit database;
        config_files = [
          "/var/lib/matrix-as-facebook/facebook-registration.yaml"
          "/var/lib/matrix-as-signal/signal-registration.yaml"
          "/var/lib/matrix-as-telegram/telegram-registration.yaml"
        ];
      };
      media_api = { inherit database; };
      room_server = { inherit database; };
      push_server = { inherit database; };
      mscs = {
        inherit database;
        mscs = [ "msc2836" "msc2946" ];
      };
      sync_api = { inherit database; };
      key_server = { inherit database; };
      federation_api = { inherit database; };
      user_api = {
        account_database = database;
        device_database = database;
      };
    };
  };

  # Matrix bridges
  services.matrix-appservices = {
    homeserver = "dendrite";
    homeserverDomain = "coolneng.duckdns.org";
    homeserverURL = "https://matrix.coolneng.duckdns.org";
    addRegistrationFiles = true;
    services = {
      telegram = {
        port = 8118;
        format = "mautrix-python";
        package = mautrix-telegram;
      };
      facebook = {
        port = 8228;
        format = "mautrix-python";
        package = mautrix-facebook;
      };
      signal = {
        port = 8338;
        format = "mautrix-python";
        package = mautrix-signal;
        serviceConfig = {
          StateDirectory = [ "matrix-as-signal" "signald" ];
          JoinNamespaceOf = "signald.service";
          SupplementaryGroups = [ "signald" ];
        };
        settings.signal = {
          socket_path = config.services.signald.socketPath;
          outgoing_attachment_dir = "/var/lib/signald/tmp";
        };
      };
    };
  };

  # Additional settings for mautrix-signal
  services.signald.enable = true;
  systemd.services.matrix-as-signal = {
    requires = [ "signald.service" ];
    after = [ "signald.service" ];
  };

}