# SPDX-FileCopyrightText: 2022 Richard Brežák <richard@brezak.sk>
#
# SPDX-License-Identifier: LGPL-3.0-or-later
{lib, ...}:
with lib; {
  options = {
    wireguard = mkOption {
      description = ''
        Wireguard machine specific settings.
      '';
      type = with types;
        attrsOf (
          submodule
          {
            options = {
              ips = mkOption {
                description = ''
                  IP addresses.
                '';
                type = listOf str;
                default = [];
              };

              listenPort = mkOption {
                description = ''
                  Listen port.
                '';
                type = port;
              };

              privateKeyFile = mkOption {
                description = ''
                  Path to private key
                '';
                type = str;
              };

              postSetup = mkOption {
                description = ''
                  Post setup script.
                '';
                type = coercedTo (listOf str) (concatStringsSep "\n") lines;
                default = "";
              };

              peers = mkOption {
                description = ''
                  List of peers.
                '';
                type = listOf (
                  submodule
                  {
                    options = {
                      publicKey = mkOption {
                        description = ''
                          Peer public key.
                        '';
                        type = str;
                      };
                      allowedIPs = mkOption {
                        description = ''
                          Allowed IPs for peer.
                        '';
                        type = listOf str;
                      };
                      endpoint = mkOption {
                        description = ''
                          Peer endpoint.
                        '';
                        type = nullOr str;
                        default = null;
                      };
                      persistentKeepalive = mkOption {
                        description = ''
                          Persistent keepalive.
                        '';
                        type = nullOr int;
                        default = null;
                      };
                    };
                  }
                );
                default = [];
              };
            };
          }
        );
      default = {};
      example =
        literalExample
        ''
          {
            heater = {
              ips =
                [ "stuff" ];
              listenPort = 0;
              privateKeyFile = "stuff";
              peers = [
                { publicKey =
                    "stuff";
                  allowedIPs =
                    [ "stuff"
                    ];
                };
              ];
            }
          }
        '';
    };
  };
}