using TMPro;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.Events;
using UnityEngine.InputSystem;

namespace Michsky.UI.Heat
{
	[RequireComponent(typeof(TMP_InputField))]
	public class SliderInput : MonoBehaviour
	{
		[Header("Resources")]
		[SerializeField]
		private SliderManager sliderManager;

		[SerializeField]
		private TMP_InputField inputField;

		[Header("Settings")]
		[SerializeField]
		private bool multiplyValue;

		[Range(1f, 10f)]
		public int maxChar = 5;

		[Range(0f, 4f)]
		public int decimals = 1;

		[Header("Events")]
		public UnityEvent onSubmit;

		private void Awake()
		{
			if (sliderManager == null)
			{
				Debug.LogWarning("'Slider Manager' is missing!");
				return;
			}
			if (inputField == null)
			{
				inputField = GetComponent<TMP_InputField>();
			}
			if (sliderManager.mainSlider.wholeNumbers)
			{
				inputField.contentType = TMP_InputField.ContentType.IntegerNumber;
			}
			else if (sliderManager.mainSlider.wholeNumbers)
			{
				inputField.contentType = TMP_InputField.ContentType.DecimalNumber;
				decimals = 0;
			}
			inputField.characterLimit = maxChar;
			inputField.selectionColor = new Color(inputField.textComponent.color.r, inputField.textComponent.color.g, inputField.textComponent.color.b, inputField.selectionColor.a);
			inputField.onDeselect.AddListener(delegate
			{
				SetText(sliderManager.mainSlider.value);
			});
			onSubmit.AddListener(SetValue);
			sliderManager.mainSlider.onValueChanged.AddListener(SetText);
			sliderManager.mainSlider.onValueChanged.Invoke(sliderManager.mainSlider.value);
		}

		private void Update()
		{
			if (!string.IsNullOrEmpty(inputField.text) && !(EventSystem.current.currentSelectedGameObject != inputField.gameObject) && Keyboard.current.enterKey.wasPressedThisFrame)
			{
				onSubmit.Invoke();
			}
		}

		private void SetText(float value)
		{
			if (multiplyValue)
			{
				value *= 100f;
			}
			if (decimals == 0)
			{
				inputField.text = value.ToString("F0");
			}
			else if (decimals == 1)
			{
				inputField.text = value.ToString("F1");
			}
			else if (decimals == 2)
			{
				inputField.text = value.ToString("F2");
			}
			else if (decimals == 3)
			{
				inputField.text = value.ToString("F3");
			}
			else if (decimals == 4)
			{
				inputField.text = value.ToString("F4");
			}
		}

		private void SetValue()
		{
			if (sliderManager.mainSlider.wholeNumbers)
			{
				sliderManager.mainSlider.value = int.Parse(inputField.text);
			}
			else if (multiplyValue)
			{
				sliderManager.mainSlider.value = float.Parse(inputField.text) / 100f;
			}
			else
			{
				sliderManager.mainSlider.value = float.Parse(inputField.text);
			}
			if (!multiplyValue && float.Parse(inputField.text) > sliderManager.mainSlider.maxValue)
			{
				sliderManager.mainSlider.value = sliderManager.mainSlider.maxValue;
			}
			else if (multiplyValue && float.Parse(inputField.text) / 100f > sliderManager.mainSlider.maxValue)
			{
				sliderManager.mainSlider.value = sliderManager.mainSlider.maxValue;
			}
		}
	}
}