import ../make-test-python.nix (
  { pkgs, lib, ... }:

  let
    releases = import ../../release.nix {
      configuration = {
        # Building documentation makes the test unnecessarily take a longer time:
        documentation.enable = lib.mkForce false;

        # Our tests require `grep` & friends:
        environment.systemPackages = with pkgs; [ busybox ];
      };
    };

    lxd-image-metadata = releases.lxdVirtualMachineImageMeta.${pkgs.stdenv.hostPlatform.system};
    lxd-image-disk = releases.lxdVirtualMachineImage.${pkgs.stdenv.hostPlatform.system};

    instance-name = "instance1";
  in
  {
    name = "lxd-virtual-machine";

    nodes.machine =
      { lib, ... }:
      {
        virtualisation = {
          diskSize = 4096;

          cores = 2;

          # Ensure we have enough memory for the nested virtual machine
          memorySize = 1024;

          lxc.lxcfs.enable = true;
          lxd.enable = true;
        };
      };

    testScript = ''
      def instance_is_up(_) -> bool:
        status, _ = machine.execute("lxc exec ${instance-name} --disable-stdin --force-interactive /run/current-system/sw/bin/true")
        return status == 0

      machine.wait_for_unit("sockets.target")
      machine.wait_for_unit("lxd.service")
      machine.wait_for_file("/var/lib/lxd/unix.socket")

      # Wait for lxd to settle
      machine.succeed("lxd waitready")

      machine.succeed("lxd init --minimal")

      with subtest("virtual-machine image can be imported"):
          machine.succeed("lxc image import ${lxd-image-metadata}/*/*.tar.xz ${lxd-image-disk}/nixos.qcow2 --alias nixos")

      with subtest("virtual-machine can be launched and become available"):
          machine.succeed("lxc launch nixos ${instance-name} --vm --config limits.memory=512MB --config security.secureboot=false")
          with machine.nested("Waiting for instance to start and be usable"):
            retry(instance_is_up)

      with subtest("lxd-agent is started"):
          machine.succeed("lxc exec ${instance-name} systemctl is-active lxd-agent")
    '';
  }
)