using System;
using TMPro;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.UI;

namespace Michsky.UI.Heat
{
	[ExecuteInEditMode]
	public class ProgressBar : MonoBehaviour
	{
		[Serializable]
		public class OnValueChanged : UnityEvent<float>
		{
		}

		public enum BarDirection
		{
			Left = 0,
			Right = 1,
			Top = 2,
			Bottom = 3,
			Custom = 4
		}

		public Sprite icon;

		public float currentValue;

		public float minValue;

		public float maxValue = 100f;

		public float minValueLimit;

		public float maxValueLimit = 100f;

		public Image barImage;

		[SerializeField]
		private Image iconObject;

		[SerializeField]
		private Image altIconObject;

		[SerializeField]
		private TextMeshProUGUI textObject;

		[SerializeField]
		private TextMeshProUGUI altTextObject;

		public bool addPrefix;

		public bool addSuffix;

		[Range(0f, 5f)]
		public int decimals;

		public string prefix = "";

		public string suffix = "%";

		public BarDirection barDirection;

		public OnValueChanged onValueChanged;

		[HideInInspector]
		public Slider eventSource;

		private void Start()
		{
			Initialize();
			UpdateUI();
		}

		public void UpdateUI()
		{
			if (barImage != null)
			{
				barImage.fillAmount = currentValue / maxValue;
			}
			if (iconObject != null)
			{
				iconObject.sprite = icon;
			}
			if (altIconObject != null)
			{
				altIconObject.sprite = icon;
			}
			if (textObject != null)
			{
				UpdateText(textObject);
			}
			if (altTextObject != null)
			{
				UpdateText(altTextObject);
			}
			if (eventSource != null)
			{
				eventSource.value = currentValue;
			}
		}

		private void UpdateText(TextMeshProUGUI txt)
		{
			if (addSuffix)
			{
				txt.text = currentValue.ToString("F" + decimals) + suffix;
			}
			else
			{
				txt.text = currentValue.ToString("F" + decimals);
			}
			if (addPrefix)
			{
				txt.text = prefix + txt.text;
			}
		}

		public void Initialize()
		{
			if (Application.isPlaying && onValueChanged.GetPersistentEventCount() != 0)
			{
				if (eventSource == null)
				{
					eventSource = base.gameObject.AddComponent(typeof(Slider)) as Slider;
				}
				eventSource.transition = Selectable.Transition.None;
				eventSource.minValue = minValue;
				eventSource.maxValue = maxValue;
				eventSource.onValueChanged.AddListener(onValueChanged.Invoke);
			}
			SetBarDirection();
		}

		private void SetBarDirection()
		{
			if (barImage != null)
			{
				barImage.type = Image.Type.Filled;
				if (barDirection == BarDirection.Left)
				{
					barImage.fillMethod = Image.FillMethod.Horizontal;
					barImage.fillOrigin = 0;
				}
				else if (barDirection == BarDirection.Right)
				{
					barImage.fillMethod = Image.FillMethod.Horizontal;
					barImage.fillOrigin = 1;
				}
				else if (barDirection == BarDirection.Top)
				{
					barImage.fillMethod = Image.FillMethod.Vertical;
					barImage.fillOrigin = 1;
				}
				else if (barDirection == BarDirection.Bottom)
				{
					barImage.fillMethod = Image.FillMethod.Vertical;
					barImage.fillOrigin = 0;
				}
			}
		}

		public void ClearEvents()
		{
			eventSource.onValueChanged.RemoveAllListeners();
		}

		public void SetValue(float newValue)
		{
			currentValue = newValue;
			UpdateUI();
		}
	}
}