using System.Collections.Generic;
using UnityEngine;
using SanAndreasUnity.Utilities;

namespace SanAndreasUnity.Behaviours
{
	
	public partial class Ped {

		public Damageable Damageable { get; private set; }

		public float Health { get { return this.Damageable.Health; } set { this.Damageable.Health = value; } }
		[SerializeField] private float m_maxHealth = 100f;
		public float MaxHealth { get { return m_maxHealth; } set { m_maxHealth = value; } }

		public Bar HealthBar { get; private set; }



		void AwakeForDamage ()
		{
			this.Damageable = this.GetComponentOrThrow<Damageable> ();

		}

		void StartForDamage ()
		{
			this.CreateHealthBar ();

		}

		void CreateHealthBar ()
		{
			this.HealthBar = Object.Instantiate (GameManager.Instance.barPrefab, this.transform).GetComponentOrThrow<Bar> ();
			//	this.HealthBar.SetBorderWidth (0.1f);
			this.HealthBar.BackgroundColor = UI.HUD.Instance.healthBackgroundColor;
			this.HealthBar.FillColor = UI.HUD.Instance.healthColor;
			this.HealthBar.BorderColor = Color.black;

			this.UpdateHealthBar ();
		}

		void UpdateDamageStuff ()
		{
			this.UpdateHealthBar ();
		}

		void UpdateHealthBar ()
		{
			bool shouldBeVisible = PedManager.Instance.displayHealthBarAbovePeds && this != Ped.Instance;
			this.HealthBar.gameObject.SetActive (shouldBeVisible);

			if (shouldBeVisible)
			{
				this.HealthBar.BarSize = new Vector3 (PedManager.Instance.healthBarWorldWidth, PedManager.Instance.healthBarWorldHeight, 1.0f);
				this.HealthBar.SetFillPerc (this.Health / this.MaxHealth);
				this.HealthBar.transform.position = this.GetPosForHealthBar ();
				this.HealthBar.MaxHeightOnScreen = PedManager.Instance.healthBarMaxScreenHeight;
			}

		}

		public void DrawHealthBar ()
		{
			
			Vector3 pos = this.GetPosForHealthBar ();

			Rect rect = GUIUtils.GetRectForBarAsBillboard (pos, PedManager.Instance.healthBarWorldWidth, 
				PedManager.Instance.healthBarWorldHeight, Camera.main);

			// limit height
			rect.height = Mathf.Min (rect.height, PedManager.Instance.healthBarMaxScreenHeight);

			float borderWidth = Mathf.Min( 2f, rect.height / 4f );
			GUIUtils.DrawBar( rect, this.Health / this.MaxHealth, UI.HUD.Instance.healthColor, UI.HUD.Instance.healthBackgroundColor, borderWidth );

		}

		private Vector3 GetPosForHealthBar ()
		{
			if (null == this.PlayerModel.Head)
				return this.transform.position;

			Vector3 pos = this.PlayerModel.Head.position;
			pos += this.transform.up * PedManager.Instance.healthBarVerticalOffset;

			return pos;
		}


	}

}