#if HAVE_NODECANVAS

using System;

using UnityEngine;

using ParadoxNotion.Design;
using NodeCanvas.Framework;
using NodeCanvas.StateMachines;

namespace Framework.State {

  /// <summary>Terminates the calling FSM and starts another FSM</summary>
  [Category("Utility")]
  [Description("Terminates the calling FSM and starts another FSM")]
  public class ContinueWithFsmTask : ActionTask {

    /// <summary>State machine that will be started</summary>
    [RequiredField]
    public BBParameter<FSMOwner> ContinueFsm;

    /// <summary>Summary of what this action does</summary>
    protected override string info {
      get { return "Continue with " + this.ContinueFsm.ToString(); }
    }

    /// <summary>Called once when the action is executed</summary>
    protected override void OnExecute() {
      FSMOwner runningFsmOwner = base.agent.GetComponent<FSMOwner>();
      if(runningFsmOwner == null) {
        string agentName;
        if(base.agent == null) {
          agentName = "(none)";
        } else {
          agentName = base.agent.name;
        }
        Debug.LogError(
          "Tried to disable running FSM, but execution agent '" + agentName + "' " +
          "does not contain the FSMOwner component. Unbound FSM graph used?"
        );
        return;
      }

      runningFsmOwner.enabled = false;
      this.ContinueFsm.value.enabled = true;

      EndAction();
    }

  }

} // namespace Framework.State

#endif // HAVE_NODECANVAS