Fediversity/deployment/options.nix

/**
  Deployment options as to be presented in the front end.

  These are converted to JSON schema in order to generate front-end forms etc.
  For this to work, options must not have types `functionTo` or `package`, and must not access `config` for their default values.

  The options are written in a cumbersome way because the JSON schema converter can't evaluate a submodule option's default value, which thus all must be set to `null`.
  This can be fixed if we made the converter aware of [`$defs`], but that would likely amount to half a rewrite.

  [`$defs`]: https://json-schema.org/understanding-json-schema/structuring#defs
*/
{
  lib,
  ...
}:
let
  inherit (lib) types mkOption;
in
{
  _class = "nixops4Deployment";

  options = {
    enable = lib.mkEnableOption "Fediversity configuration";
    domain = mkOption {
      type =
        with types;
        enum [
          "fediversity.net"
        ];
      description = ''
        Apex domain under which the services will be deployed.
      '';
      default = "fediversity.net";
    };
    pixelfed = mkOption {
      description = ''
        Configuration for the Pixelfed service
      '';
      type =
        with types;
        nullOr (submodule {
          options = {
            enable = lib.mkEnableOption "Pixelfed";
          };
        });
      default = null;
    };
    peertube = mkOption {
      description = ''
        Configuration for the PeerTube service
      '';
      type =
        with types;
        nullOr (submodule {
          options = {
            enable = lib.mkEnableOption "Peertube";
          };
        });
      default = null;
    };
    mastodon = mkOption {
      description = ''
        Configuration for the Mastodon service
      '';
      type =
        with types;
        nullOr (submodule {
          options = {
            enable = lib.mkEnableOption "Mastodon";
          };
        });
      default = null;
    };
    initialUser = mkOption {
      description = ''
        Some services require an initial user to access them.
        This option sets the credentials for such an initial user.
      '';
      type =
        with types;
        nullOr (submodule {
          options = {
            displayName = mkOption {
              type = types.str;
              description = "Display name of the user";
            };
            username = mkOption {
              type = types.str;
              description = "Username for login";
            };
            email = mkOption {
              type = types.str;
              description = "User's email address";
            };
            password = mkOption {
              type = types.str;
              description = "Password for login";
            };
          };
        });
      default = null;
    };
  };
}