using System.Collections;
using System.Collections.Generic;
using UnityEngine;

namespace Snxxz.UI
{

    [DisallowMultipleComponent]
    public class LifeBar : HUDBehaviour
    {

        [Header("LifeBar")]
        [SerializeField]
        MultipleSmoothSlider m_MultipleSlider;
        public MultipleSmoothSlider multipleSlider
        {
            get
            {
                return m_MultipleSlider;
            }
        }

        [SerializeField]
        [Range(0, 10)]
        float m_Delay;
        public float delay
        {
            get
            {
                return m_Delay;
            }
        }

        [SerializeField]
        bool m_NeverHide;
        public bool neverHide
        {
            get
            {
                return m_NeverHide;
            }
            set
            {
                m_NeverHide = value;
            }
        }

        [SerializeField]
        [Range(0, 100)]
        float m_HideInterval;
        public float hideInterval
        {
            get
            {
                return m_HideInterval;
            }
            set
            {
                m_HideInterval = Mathf.Clamp(value, 0, 100);
            }
        }

        float m_Value;
        public float value
        {
            get
            {
                return m_Value;
            }
            set
            {
                m_Value = Mathf.Clamp01(value);
                if (multipleSlider != null)
                {
                    multipleSlider.value = m_Value;
                }
            }
        }

        Camera m_TargetCamera;
        public Camera targetCamera
        {
            get
            {
                return m_TargetCamera;
            }
            set
            {
                m_TargetCamera = value;
                if (m_TargetCamera != null && facingCamera != null)
                {
                    facingCamera.camera = m_TargetCamera;
                }
            }
        }

        float[] reduceHpDelay = new float[2];
        float[] addHpDelay = new float[2];

        float hideTime = 0f;
        Pattern m_Pattern = Pattern.Enemy;
        public Pattern pattern
        {
            get { return m_Pattern; }
            set { m_Pattern = value; }
        }

        public static LifeBar RequireLifeBar(Transform _target, float _offsetY, Camera _camera)
        {
            var lifeBar = LifeBarPool.Require(Pattern.Enemy);
            lifeBar.camera = _camera;
            lifeBar.target = _target;
            lifeBar.offset = new Vector3(0, _offsetY, 0);
            lifeBar.transform.SetParentEx(WindowCenter.Instance.uiRoot.lifeBarCanvas.transform, Vector3.zero, Quaternion.identity, Vector3.one);
            if (lifeBar.multipleSlider != null)
            {
                lifeBar.multipleSlider.ResetValue(1f);
            }
            lifeBar.value = 1f;
            lifeBar.pattern = Pattern.Enemy;
            return lifeBar;
        }

        public static void Recycle(LifeBar _lifeBar)
        {
            LifeBarPool.Recycle(_lifeBar.gameObject, _lifeBar.pattern);
        }

        public void Set(ulong _hp, ulong _maxHp)
        {
            var targetValue = _hp / (float)_maxHp;
            value = targetValue;
            this.transform.localScale = Vector3.one;
            hideTime = Time.time + hideInterval;
            multipleSlider.ResetValue(value);
            SyncPosition(true);
        }

        public void Show(ulong _hp, ulong _maxHp)
        {
            var targetValue = _hp / (float)_maxHp;
            if (targetValue < this.value)
            {
                multipleSlider.UpdateDelayTimes(reduceHpDelay);
            }
            else
            {
                multipleSlider.UpdateDelayTimes(addHpDelay);
            }

            value = targetValue;
            this.transform.localScale = Vector3.one;
            hideTime = Time.time + hideInterval;
            SyncPosition(true);
        }

        public void Hide()
        {
            this.transform.localScale = Vector3.zero;
        }

        void Awake()
        {
            reduceHpDelay[0] = 0f;
            reduceHpDelay[1] = delay;

            addHpDelay[0] = delay;
            addHpDelay[1] = 0f;
        }

        protected override void OnEnable()
        {
            base.OnEnable();
            multipleSlider.ResetValue(value);
        }

        protected override void LateUpdate()
        {
            base.LateUpdate();

            if (Time.time > hideTime && !neverHide)
            {
                this.transform.localScale = Vector3.zero;
            }
        }


        public enum Pattern
        {
            Friendly = 1,
            Pet = 2,
            Enemy = 3,
        }

    }

}