using System;

using UnityEngine;

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

namespace Framework.State {

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

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

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

        if(state.Pause.WasTriggered) {
          if(this.stateManager.IsPaused) {
            this.stateManager.Resume();
          } else {
            this.stateManager.Pause();
          }
        }
      }
    }

    /// <summary>
    ///   Input manager that is used to obtain the current input device state
    /// </summary>
    private IInputManager inputManager;
    /// <summary>
    ///   State manager that will handle pause mode and actor notifying
    /// </summary>
    private IStateManager stateManager;

  }

} // namespace Framework.State