using System.Collections.Generic;
using UnityEngine;

namespace OHM.UnityToolkit.UI
{
	public class UIMenusController : MonoBehaviour
	{
		public UIMenuBase defaultMenu;

		private List<UIMenuBase> _popupStack = new List<UIMenuBase>();
		public UIMenuBase[] AllSubMenus { get; set; }

		private void Awake()
		{
			InitSubMenus();
			if (defaultMenu != null)
			{
				HideAllExcept(defaultMenu);
			}
			else
			{
				HideAll();
			}
		}

		private void InitSubMenus()
		{
			AllSubMenus = GetComponentsInChildren<UIMenuBase>(true);
			for (int i = 0; i < AllSubMenus.Length; i++)
			{
				InitSubMenu(AllSubMenus[i]);
			}
		}

		protected virtual void InitSubMenu(UIMenuBase menu)
		{
			menu.SetMenuController(this);
		}

		public void HideAll()
		{
			for (int i = 0; i < AllSubMenus.Length; i++)
			{
				AllSubMenus[i].Hide();
			}
		}

		public void HideAllExcept(UIMenuBase except)
		{
			for (int i = 0; i < AllSubMenus.Length; i++)
			{
				UIMenuBase menu = AllSubMenus[i];
				if (menu != except)
				{
					menu.Hide();
				}
			}
		}

		public void ShowDebug(bool state)
		{
		}

		public void PushPopup(UIMenuBase popup)
		{
			_popupStack.Add(popup);
		}

		public void PopPopup(UIMenuBase popup)
		{
			_popupStack.RemoveAll((UIMenuBase p) => p == popup);
		}

		public void Update()
		{
			if (!Input.GetKeyUp(KeyCode.Escape))
			{
				return;
			}
			var stack = new List<UIMenuBase>(_popupStack);
			for (int i = stack.Count - 1; i >= 0; i--)
			{
				if (stack[i].OnBack())
				{
					break;
				}
			}
		}

	}
}