{ config, pkgs, lib, ... }:
with lib;
{
  options = {
    cpu.cores = mkOption {
      type = types.int;
      default = 2;
      description = "Number of CPU cores.";
    };
    cpu.model = mkOption {
      type = types.str;
      default = "host";
      description = "CPU model.";
    };
    kvm = mkOption {
      type = types.bool;
      default = true;
      description = "Enable KVM.";
    };
    arch = mkOption {
      type = types.str;
      default = "x86_64";
      description = "Architecture of the VM.";
    };
    pc.type = mkOption {
      type = types.str;
      default = "q35";
      description = "PC type.";
    };
    bios.efi = mkOption {
      type = types.bool;
      default = true;
      description = "Enable EFI BIOS.";
    };
    bios.tpm = mkOption {
      type = types.bool;
      default = false;
      description = "Enable TPM BIOS.";
    };
    mem.size = mkOption {
      type = types.int;
      default = 1024;
      description = "Memory size in MB.";
    };
    mem.balloon = mkOption {
      type = types.bool;
      default = false;
      description = "Enable memory ballooning.";
    };
    disks.os.file = mkOption {
      type = types.path;
      description = "Path to the OS disk image.";
    };
    disks.os.persist = mkOption {
      type = types.bool;
      default = false;
      description = "Persist OS disk changes.";
    };
    disks.iso.file = mkOption {
      type = types.nullOr types.path;
      description = "Path to the ISO file.";
      default = null;
    };
    disks.add = mkOption {
      default = {};
      type = types.attrsOf (types.submodule {
        options = {
          file = mkOption {
            type = types.path;
            description = "Path to the additional disk.";
          };
          mounts = mkOption {
            type = types.attrsOf types.str;
            description = "Mount points for the additional disk.";
          };
          opts = mkOption {
            type = types.str;
            description = "additional options in QEMU args for this disk";
          };
        };
      });
      description = "Additional disks.";
    };
    shares = mkOption {
      default = {};
      type = types.attrsOf (types.submodule {
        options = {
          source = mkOption {
            type = types.path;
            description = "Source path for the shared directory.";
          };
          target = mkOption {
            type = types.str;
            description = "Target path inside the VM for the shared directory.";
          };
        };
      });
      description = "Shared directories.";
    };

    disks.bus = mkOption {
      type = types.str;
      default = "virtio";
      description = "Bus type for the disks.";
    };
    boot.order = mkOption {
      type = types.listOf types.str;
      description = "Boot order.";
      default = [ "os" "iso" ];
    };
    boot.menu = mkOption {
      type = types.bool;
      default = false;
      description = "Enable boot menu.";
    };

    network.user.enable = mkOption {
      type = types.bool;
      default = false;
      description = "enable qemu user networking";
    };

    network.vmix = mkOption {
      default = {};
      type = types.attrsOf (types.submodule {
        options = {
          lans = mkOption {
            default = {};
            type = types.attrsOf (types.submodule {
              options = {
                enable = mkOption {
                  type = types.bool;
                  default = false;
                  description = "Enable the LAN interface.";
                };
                mac = mkOption {
                  type = types.str;
                  description = "MAC address for the LAN interface.";
                };
              };
            });
            description = "LAN interfaces.";
          };
          macvtaps = mkOption {
            default = {};
            type = types.attrsOf (types.submodule {
              options = {
                enable = mkOption {
                  type = types.bool;
                  default = false;
                  description = "Enable the MACVTap interface.";
                };
                mac = mkOption {
                  type = types.nullOr types.str;
                  default = null;
                  description = "MAC address for the MACVTap interface.";
                };
              };
            });
            description = "MACVTap interfaces.";
          };
        };
      });
      description = "Network interfaces.";
    };
  };
}