using System.Collections.Generic;
using Framework.GamePool;
using Unity.Mathematics;
using UnityEngine;
using UnityEngine.UI;

namespace Game.OtherComponent
{
    public class HpSlider : MonoBehaviour
    {
        [SerializeField] private Image  _prefab;
        [SerializeField] private Sprite _activeImg;
        [SerializeField] private Sprite _unActiveImg;
        [SerializeField] private float  _minValue = 0;
        [SerializeField] private float  _maxValue = 100;
        private                  float  _value;
        public                   int    RateUnit = 10;

        public float MinValue => this._minValue;
        public float MaxValue => this._maxValue;
        public float Value    => this._value;
        public float Progress => (this._value - this._minValue ) / (this._maxValue - this._minValue);


        private List<Image> _images = new List<Image> ();
        private int         ObjMaxValue    => (int)math.ceil ((this._maxValue * 1.0f / this.RateUnit));
        private int         ObjActiveValue => (int)math.ceil ((this.Progress  * 1.0f * this.ObjMaxValue));

        public void SetMinMax (float minValue, float maxValue, float value)
        {
            this._minValue = minValue;
            this._maxValue = maxValue;
            SetValue (value);
        }

        public void SetValue (float value)
        {
            this._value = ValueMono (value);
            RefreshSlider ();
        }

        private int ValueMono (float value)
        {
            return (int)math.clamp (value + 0.5f , this._minValue , this._maxValue);
        }


        private void RefreshSlider ()
        {
            if (this._prefab.gameObject.activeSelf)
            {
                this._prefab.gameObject.SetActive (false);
            }

            var amount = math.max (this._images.Count , this.ObjMaxValue);

            for (int i = 1; i <= amount; i++)
            {
                if (this._images.Count < i)
                {
                    var image = Instantiate (this._prefab , this.transform);
                    this._images.Add (image);
                }

                var obj = this._images[i - 1];
                obj.gameObject.SetActive (i <= this.ObjMaxValue);
                obj.sprite = i <= this.ObjActiveValue ? this._activeImg : this._unActiveImg;
            }
        }
    }
}