#if HAVE_SLATE

using System;

using UnityEngine;

using Slate;

using Framework.Input;
using Framework.Input.States;
using Framework.Services;

namespace Framework.Cinematics {

  /// <summary>Skips a cutscene when the escape key is pressed</summary>
  public class CutsceneSkipKeyListener : ScriptComponent {

    /// <summary>
    ///   Called once after the GameObject the script is attached to is created
    /// </summary>
    protected void Start() {
      this.cutscene = GetComponent<Cutscene>();
      if(this.cutscene == null) {
        Debug.LogWarning(
          "CutsceneSkipKeyListener was added to '" + gameObject.name + "' which " +
          "does not have a Slate 'Cutscene' component. Skipping won't work."
        );
      }
    }

    /// <summary>Provides the instance with services it depends on</summary>
    /// <param name="inputManager">Input manager by which the keys will be checked</param>
    protected virtual void Inject(IInputManager inputManager) {
      this.inputManager = inputManager;
    }

    /// <summary>Called once per visual frame to update the input devices</summary>
    protected virtual void Update() {
      if((this.cutscene != null) && (this.inputManager != null)) {
        CinematicInputState state = this.inputManager.GetState<CinematicInputState>();

        // Allow the cutscene to be skipped
        if(state.Skip.WasTriggered) {
          if(this.cutscene.isActive) {
            this.cutscene.SkipCurrentSection();
          }
        }
      }
    }

    /// <summary>Input manager that is used to check input device states</summary>
    [NonSerialized]
    private IInputManager inputManager;
    /// <summary>Cutscene that can be skipped or paused by this script</summary>
    [NonSerialized]
    private Cutscene cutscene;

  }

} // namespace Framework.Cinematics

#endif // HAVE_SLATE