@0x9a05e95f65f2edda;

using CSharp = import "programming_language/csharp.capnp";
$CSharp.namespace("FabAccessAPI.Schema");

using import "user.capnp".User;
using import "utils.capnp".Fallible;

interface Users {
    list @0 () -> ( users :List(User) );

    addUser @1 ( username :Text ) -> Fallible(AddUserOk, AddUserError);
    struct AddUserOk {
        user @0 :User;
        initialPassword @1 :Text;
    }
    struct AddUserError {
        union {
            ok @0 :Void;
            # This error is not actually set, i.e. the operation completed successfully.
            # This field is necessary because a NULL struct pointer may be interpreted as a struct with
            # default values.  In that case this will appear as an `Error` with the `ok` field set.

            exists @1 :Void;
            # There is already an user with the requested username

            usernameInvalid @2 :Void;
            # The provided username is not usable, e.g. contains invalid characters, is too long, or too
            # short.

            passwordInvalid @3 :Void;
            # The provided password is not usable, e.g. it's zero-length.
        }
    }

    removeUser @2 ( user :User ) -> Fallible(RemoveUserOk, RemoveUserError);
    struct RemoveUserOk {

    }
    struct RemoveUserError {
        union {
            permissionDenied @0 :Void;
            userAlreadyDeleted @1 :Void;
        }
    }
}