self-hosting/modules/roundcube.nix

{ pkgs, lib, config, ... }:
let cfg = config.custom.services.roundcube;
in {
  options.custom.services.roundcube = {
    enable = lib.mkEnableOption "roundcube";
  };

  config = lib.mkIf cfg.enable {
    sops.secrets = {
      pgPassFile = {
        owner = "nginx";
        key = "roundcube/pg_pass_file";
      };
      dbPassword = {
        owner = "nginx";
        key = "roundcube/db_password";
      };
    };

    # Required because roundcube uses psql: https://github.com/NixOS/nixpkgs/blob/46397778ef1f73414b03ed553a3368f0e7e33c2f/nixos/modules/services/mail/roundcube.nix#L247
    services.postgresql.package = pkgs.postgresql_15;

    services.roundcube = {
      enable = true;
      plugins = [ "managesieve" ];
      dicts = with pkgs.aspellDicts; [ en fr de ];
      hostName = "webmail.banditlair.com";
      database = {
        host = "10.0.1.11";
        username = "roundcube";
        dbname = "roundcube";
        passwordFile = config.sops.secrets.pgPassFile.path;
      };

      extraConfig = ''
        # This override is required as a workaround for the nixpkgs config because we need a plain password instead of a pgpass file
        $password = file_get_contents('${config.sops.secrets.dbPassword.path}');
        $config['db_dsnw'] = 'pgsql://roundcube:' . $password . '@10.0.1.11/roundcube';

        $config['default_host'] = 'ssl://mail.banditlair.com:993';
        $config['smtp_server'] = 'ssl://%h';
        $config['smtp_user'] = '%u';
        $config['smtp_pass'] = '%p';
        $config['identities_level'] = 0;
        $config['managesieve_host'] = 'tls://%h';
        $config['managesieve_auth_type'] = 'PLAIN';
      '';
    };
  };
}