import interface PresentationState;
import interface PresentationMount;
import interface StateFactory;
external atom PresentationMountRecord id "presentation-mount-record";
package PresentationRuntime id "presentation-runtime" revision "presentation-runtime@1" {
  function createPresentationMount id "presentation-runtime:create" : unit -> interface-ref<PresentationMount> execution transaction targets [browser,server] requires {
    creation presentationMount id "presentationMount" : PresentationMountRecord input unit;
  };
  operation attach id "presentation-runtime:attach" : interface-ref<PresentationState> -> unit mode call execution transaction targets [browser,server] receiver any requires {
    edge members id "members" : many-unique interface PresentationState [resolve,connect];
    edge root id "root" : optional-one interface PresentationState [resolve,connect];
    interface metadata id "state" : PresentationState using [presentationMount.resolve,parent.resolve] from input;
  };
  operation ensure<object Navigation implements PresentationState> id "presentation-runtime:ensure" : record {presentationMount:interface-ref<PresentationMount>;occurrence:string;parent:optional<interface-ref<PresentationState>>;} -> ref<Navigation> mode call execution transaction targets [browser,server] receiver any requires {
    edge states id "states" : many-unique object Navigation [resolve,connect];
    interface metadata id "state" : PresentationState using [occurrence.get,presentationMount.resolve,parent.resolve] from input;
    interface presentationMount id "presentationMount" : PresentationMount using [attach.call] from input;
    interface factory id "factory" : StateFactory<Navigation> using [create.call];
  };
  function createState<object Navigation> id "presentation-runtime:create-state" : record {occurrence:string;parent:optional<interface-ref<PresentationState>>;} -> ref<Navigation> execution transaction targets [browser,server] requires {
    creation navigation id "navigation" : Navigation input record {occurrence:string;parent:optional<interface-ref<PresentationState>>;};
  };
}