using UnityEngine;
using System.Collections;

namespace SpartanFist
{
	[AddComponentMenu("Interactions/Switches/Switch")]
	public class Switch : MonoBehaviour
	{
		[Header("References"), Tooltip("(optional) If this is pointed at something, it'll be enabled/disabled based on current switch state")]
		public GameObject switchOnMesh;
		[Tooltip("(optional) If this is pointed at something, it'll be enabled/disabled based on current switch state")]
		public GameObject switchOffMesh;

		public virtual bool SwitchState
		{
			get
			{
				return curSwitchState;
			}
			set
			{
				if (value != curSwitchState)
				{
					if (value) { SwitchOn(); }
					else { SwitchOff(); }
				}
			}
		}
		protected bool curSwitchState;

		[Header("Switch Sounds")]
		public AudioClip onSound;
		public AudioClip offSound;

		[Header("Switch Stuff")]
		public bool defaultSwitchState;
		public bool stateIsSaved = false;

		#region PoolManager Functions
		public virtual void OnSpawned()
		{
			RestoreSwitchState();

			SwitchState = defaultSwitchState;
			// (don't touch lastSwitchState - we want to resume default switch state, which might mean turning on/off from where we were when despawned)
		}

		public virtual void OnDespawned()
		{
		}
		#endregion

		#region Standard Functions
		public virtual void Awake()
		{
			RestoreSwitchState();

			SwitchState = defaultSwitchState;
		}

		public virtual void Start()
		{
			// (stubbed out in case Switches need to touch external objects during their setup)
		}

		public virtual void Update()
		{
			if (SwitchState)
			{
				if ((switchOnMesh != null) && !switchOnMesh.activeSelf)
				{
					switchOnMesh.SetActive(true);
				}
				if ((switchOffMesh != null) && switchOffMesh.activeSelf)
				{
					switchOffMesh.SetActive(false);
				}
			}
			else
			{
				if ((switchOffMesh != null) && !switchOffMesh.activeSelf)
				{
					switchOffMesh.SetActive(true);
				}
				if ((switchOnMesh != null) && switchOnMesh.activeSelf)
				{
					switchOnMesh.SetActive(false);
				}
			}
		}
		#endregion

		#region Switch Functions
		private void RestoreSwitchState()
		{
			if (!stateIsSaved)
			{
				return;
			}

			// @TODO: If we want these to save/load, we'd need a system for that first
			// 		int savedState = 0;
			// 		if (PersistenceManager.TryGetObjectState(this.gameObject, out savedState))
			// 		{
			// 			if (savedState > 0)
			// 			{
			// 				defaultSwitchState = true;
			// 			}
			// 			else
			// 			{
			// 				defaultSwitchState = false;
			// 			}
			// 		}
		}

		private void SaveSwitchState()
		{
			if (!stateIsSaved)
			{
				return;
			}

			// @TODO: If we want these to save/load, we'd need a system for that first
			// 		int savedState = 0;
			// 		if (SwitchState)
			// 		{
			// 			savedState = 1;
			// 		}
			//
			// 		PersistenceManager.SetObjectState(this.gameObject, savedState);
		}

		/// <summary>
		/// This turns the switch on, with whatever effects that may have
		/// </summary>
		protected virtual void SwitchOn()
		{
			curSwitchState = true;
			if (onSound != null) { AudioSourceEx.PlayClipAtPointModulated(onSound, gameObject.transform.position); }

			SaveSwitchState();
		}

		/// <summary>
		/// This turns the switch off, with whatever effects that may have
		/// </summary>
		protected virtual void SwitchOff()
		{
			curSwitchState = false;
			if (offSound != null) { AudioSourceEx.PlayClipAtPointModulated(offSound, gameObject.transform.position); }

			SaveSwitchState();
		}
		#endregion
	}
}