make-testing.nix

{ publicIPv4
, hardware
, publicStoragePort
, ristrettoSigningKeyPath
, passValue
, sshUsers
, stateVersion
, monitoringvpnKeyDir ? null
, monitoringvpnIPv4 ? null
, monitoringvpnEndpoint ? null
, ... }: let

  enableVpn = monitoringvpnKeyDir != null &&
              monitoringvpnIPv4 != null &&
              monitoringvpnEndpoint != null;

  vpnSecrets = if !enableVpn then {} else {
    "monitoringvpn-secret-key" = {
      source = monitoringvpnKeyDir + "/${monitoringvpnIPv4}.key";
      destination = "/run/keys/monitoringvpn/client.key";
      owner.user = "root";
      owner.group = "root";
      permissions = "0400";
      action = ["sudo" "systemctl" "restart" "wireguard-monitoringvpn.service"];
    };
    "monitoringvpn-preshared-key" = {
      source = monitoringvpnKeyDir + "/preshared.key";
      destination = "/run/keys/monitoringvpn/preshared.key";
      owner.user = "root";
      owner.group = "root";
      permissions = "0400";
      action = ["sudo" "systemctl" "restart" "wireguard-monitoringvpn.service"];
    };
  };

in rec {

  deployment = {
    targetUser = "root";
    targetHost = publicIPv4;

    secrets = {
      "ristretto-signing-key" = {
        source = ristrettoSigningKeyPath;
        destination = "/run/keys/ristretto.signing-key";
        owner.user = "root";
        owner.group = "root";
        permissions = "0400";
        # Service name here matches the name defined by our tahoe-lafs nixos
        # module.  It would be nice to not have to hard-code it here.  Can we
        # extract it from the tahoe-lafs nixos module somehow?
        action = ["sudo" "systemctl" "restart" "tahoe.storage.service"];
      };
    } // vpnSecrets;
  };

  imports = [
    hardware
    ../../nixos/modules/private-storage.nix
    ../../nixos/modules/monitoring/vpn/client.nix
  ];

  services.private-storage =
  { enable = true;
    inherit publicIPv4;
    inherit publicStoragePort;
    ristrettoSigningKeyPath = deployment.secrets.ristretto-signing-key.destination;
    inherit passValue;
    inherit sshUsers;
  };

  system.stateVersion = stateVersion;

  services.private-storage.monitoring.vpn.client = if !enableVpn then {} else {
    enable = true;
    ip = monitoringvpnIPv4;
    endpoint = monitoringvpnEndpoint;
    endpointPublicKeyFile = monitoringvpnKeyDir + "/server.pub";
  };
}