using System;
using UnityEngine;
using UnityEngine.UI;

namespace Superlazy.UI
{
    [RequireComponent(typeof(Text))]
    public class SLUISmoothValue : SLUIComponent
    {
        public float smoothDuration;
        public float colorDuration;

        public Color normalColor = Color.black;
        public Color increaseColor = new Color(0.706f, 1.0f, 0.122f, 1.0f);
        public Color decreaseColor = new Color(1.0f, 0.0f, 0.0f, 1.0f);
        public bool noBigNumStr = false;

        public string prefix;
        public string postfix;

        public string bindingValue;

        [NonSerialized]
        public Text text;

        private double oldValue;
        private double current;
        private double newValue;

        private float currSmoothDuration;
        private float currColorDuration;

        protected override void Validate()
        {
            text = GetComponent<Text>();
        }

        protected override void Init()
        {
        }

        protected override void Enable()
        {
            text.color = normalColor;
            current = SLGame.SessionGet(bindParent.BindPath).Get(bindingValue);
            SetText(current);
        }

        protected override void Disable()
        {
            oldValue = 0;
            current = 0;
            newValue = 0;
            currColorDuration = 0;
            currSmoothDuration = 0;
        }

        private void Update()
        {
            if (bindParent.Active == false) return;

            var target = SLGame.SessionGet(bindParent.BindPath).Get(bindingValue);
            if (target != newValue)
            {
                currSmoothDuration = smoothDuration;
                currColorDuration = colorDuration;

                newValue = target;
                oldValue = current;
                if (oldValue > newValue)
                {
                    text.color = decreaseColor;
                }
                else if (oldValue < newValue)
                {
                    text.color = increaseColor;
                }
            }

            if (currSmoothDuration > 0)
            {
                currSmoothDuration -= Time.deltaTime;
                if (currSmoothDuration <= 0)
                {
                    current = newValue;
                }
                else
                {
                    double rate = (currSmoothDuration / smoothDuration);
                    current = rate * oldValue + (1 - rate) * newValue;
                }
                SetText(current);
            }

            if (currColorDuration > 0)
            {
                currColorDuration -= Time.deltaTime;
                if (currColorDuration <= 0)
                {
                    text.color = normalColor;
                }
            }
        }

        private void SetText(double value)
        {
            //TODO gstar 임시
            string val;

            //if (noBigNumStr)
            {
                val = value.ToString();
            }
            //else
            //{
            //    val = value.BigNumString();
            //}
            text.text = val;
            //text.text = SLGame.GetString(prefix, SLGame.SessionGet(sessionEntity.BindPath)) + SLSystem.GetString(val, SLGame.SessionGet(sessionEntity.BindPath)) + SLSystem.GetString(postfix, SLGame.SessionGet(sessionEntity.BindPath));
        }
    }
}