using Sirenix.OdinInspector;
using UnityEngine;
using UnityEngine.UI;

namespace BlueWater
{
    public class CenterSlider : MonoBehaviour
    {
        [SerializeField]
        private RectTransform _fillRect;

        [SerializeField]
        private Image _fill;

        [SerializeField]
        private RectTransform _handleRect;

        [SerializeField]
        private float _minValue;

        [SerializeField]
        private float _maxValue = 1f;

        [SerializeField]
        private float _value;

        [SerializeField]
        private Color _minColor = Color.white;

        [SerializeField]
        private Color _maxColor = Color.white;
        
        private readonly float _centerAnchorX = 0.5f;

        private void Start()
        {
            SetValue(_value);
        }
        
        private void UpdateSlider(float value)
        {
            // 0 ~ 1값
            var normalizedValue = (value - _minValue) / (_maxValue - _minValue);

            _fill.color = normalizedValue < 0.5f ? _minColor : _maxColor;

            _handleRect.anchorMin = new Vector2(normalizedValue, 0f);
            _handleRect.anchorMax = new Vector2(normalizedValue, 1f);
            
            _fillRect.anchorMin = new Vector2(Mathf.Clamp(_handleRect.anchorMin.x, 0, _centerAnchorX), 0);
            _fillRect.anchorMax = new Vector2(Mathf.Clamp(_handleRect.anchorMin.x, _centerAnchorX, 1), 1);
        }

        [Button("값 추가")]
        public void SetValue(float value)
        {
            var newValue = Mathf.Clamp(value, _minValue, _maxValue);
            _value = newValue;
            UpdateSlider(_value);
        }
    }
}