using System;
using UnityEngine;
using UnityEngine.UI;
using DuloGames.UI.Tweens;

namespace DuloGames.UI
{
    public class Test_UIBulletBar : MonoBehaviour
    {

        public enum TextVariant
        {
            Percent,
            Value,
            ValueMax
        }

        public UIBulletBar bar;
        public float Duration = 5f;
        public TweenEasing Easing = TweenEasing.InOutQuint;
        public Text m_Text;
        public TextVariant m_TextVariant = TextVariant.Percent;
        public int m_TextValue = 100;

        // Tween controls
        [NonSerialized]
        private readonly TweenRunner<FloatTween> m_FloatTweenRunner;

        // Called by Unity prior to deserialization, 
        // should not be called by users
        protected Test_UIBulletBar()
        {
            if (this.m_FloatTweenRunner == null)
                this.m_FloatTweenRunner = new TweenRunner<FloatTween>();

            this.m_FloatTweenRunner.Init(this);
        }

        protected void OnEnable()
        {
            if (this.bar == null)
                return;

            this.StartTween(0f, (this.bar.fillAmount * this.Duration));
        }

        protected void SetFillAmount(float amount)
        {
            if (this.bar == null)
                return;

            this.bar.fillAmount = amount;

            if (this.m_Text != null)
            {
                if (this.m_TextVariant == TextVariant.Percent)
                {
                    this.m_Text.text = Mathf.RoundToInt(amount * 100f).ToString() + "%";
                }
                else if (this.m_TextVariant == TextVariant.Value)
                {
                    this.m_Text.text = Mathf.RoundToInt((float)this.m_TextValue * amount).ToString();
                }
                else if (this.m_TextVariant == TextVariant.ValueMax)
                {
                    this.m_Text.text = Mathf.RoundToInt((float)this.m_TextValue * amount).ToString() + "/" + this.m_TextValue;
                }
            }
        }

        protected void OnTweenFinished()
        {
            if (this.bar == null)
                return;

            this.StartTween((this.bar.fillAmount == 0f ? 1f : 0f), this.Duration);
        }

        protected void StartTween(float targetFloat, float duration)
        {
            if (this.bar == null)
                return;

            var floatTween = new FloatTween { duration = duration, startFloat = this.bar.fillAmount, targetFloat = targetFloat };
            floatTween.AddOnChangedCallback(SetFillAmount);
            floatTween.AddOnFinishCallback(OnTweenFinished);
            floatTween.ignoreTimeScale = true;
            floatTween.easing = this.Easing;
            this.m_FloatTweenRunner.StartTween(floatTween);
        }
    }
}