using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.AI;
using UnityEngine.UI;

namespace ShotSimulator.Target
{
    public class HumanoidShotTarget : MonoBehaviour
    {
        public bool IsRunning { get; set; }

        private float m_Health;
        public float m_MaxHealth;

        [SerializeField]
        private Canvas m_Canvas;
        [SerializeField]
        private Slider healthBar;
        public Image healthBarImage;

        [SerializeField]
        protected List<HumanoidPartShotTarget> m_HumanoidParts = new List<HumanoidPartShotTarget>();

        public List<HumanoidPartType> m_CauseHumanoidPartReduceHPOrder = new List<HumanoidPartType>();

        public float Health 
        { 
            get { return m_Health; } 
            protected set 
            { 
                m_Health = value;
                if (m_Health > 1)
                {
                    healthBarImage.color = new Color(0, 1, 1);
                }
                else
                {
                    healthBarImage.color = Color.red;
                }
                healthBar.value = m_Health / m_MaxHealth;
            } 
        }

        public void InitHumanoidShotTarget(float health, Vector3 origin)
        {
            m_MaxHealth = health;
            Health = health;

            m_CauseHumanoidPartReduceHPOrder.Clear();

            gameObject.transform.position = origin;

            foreach(var part in m_HumanoidParts)
            {
                part.IsRunning = true;
            }

            IsRunning = true;
        }

        protected void Update()
        {
            if (!IsRunning) return;

            m_Canvas.gameObject.transform.LookAt(Camera.main.transform);
        }

        public virtual void CauseHumanoidPartReduceHP(HumanoidPartShotTarget part)
        {
            switch (part.PartType)
            {
                case HumanoidPartType.Head:
                    Health = 0f;
                    break;
                case HumanoidPartType.Body:
                    Health--;
                    break;
            }
            m_CauseHumanoidPartReduceHPOrder.Add(part.PartType);
        }
    }
}