using System;
using System.Collections.Generic;
using TMPro;
using UnityEngine;

namespace ZC
{
    internal class UIManager : ManagerBase<UIManager>, IUIManager
    {
        private Stack<UIBase> _uis = new Stack<UIBase>();
        private Dictionary<UIType, UIBase> _uiDic = new Dictionary<UIType, UIBase>();
        private Dictionary<UIType, Type> _types = new Dictionary<UIType, Type>();

        public TMP_FontAsset font { get; set; }

        public override void OnInit()
        {
            base.OnInit();
            var types = new List<(Type, UITypeAttribute)>();
            AssemblyManager.GetTypesInhertType<UITypeAttribute>(typeof(UIBase), types);
            foreach (var (type, uiTypeAttribute) in types)
            {
                _types.Add(uiTypeAttribute.UIType, type);
            }
        }

        public override void OnUpdate(float time)
        {
            base.OnUpdate(time);
            foreach (var ui in _uis)
            {
                ui.Update(time);
            }
        }

        public override void OnPause()
        {
            base.OnPause();
            foreach (var ui in _uis)
            {
                ui.Pause();
            }
        }

        public override void OnResume()
        {
            base.OnResume();
            foreach (var ui in _uis)
            {
                ui.Resume();
            }
        }


        public IUI CreateUI(UIType uiType, string path, UILayer uiLayer)
        {
            var gameObject = ResourcesLocalComponent.Instance.LoadUIGameObjectSync(path, uiLayer);

            if (!this._types.TryGetValue(uiType, out var type))
            {
                throw new InvalidOperationException();
            }

            if (Activator.CreateInstance(type, false) is not UIBase ui)
                throw new NullReferenceException();
            ui.SetGameObject(gameObject);

            ui.Init();
            ui.Close();
            _uiDic.Add(uiType, ui);

//#if UNITY_EDITOR
            // view
//            var addComponent = gameObject.GetComponent<UIInfo>();
//            addComponent.SetStart(ui, this.font);
//#endif

            return ui;
        }

        public IUI ShowUI(UIType uiType)
        {
            if (_uiDic.TryGetValue(uiType, out var ui))
            {
                _uis.Push(ui);
                ui.Open();
                return ui;
            }

            return null;
        }

        public T GetUI<T>(UIType uiType) where T : UIBase
        {
            if (_uiDic.TryGetValue(uiType, out var ui))
            {
                if (ui is not T t)
                    throw new InvalidCastException();
                return t;
            }

            return default;
        }

        public bool HideUI(UIType uiType)
        {
            if (_uiDic.TryGetValue(uiType, out var ui))
            {
                ui.Close();
                return true;
            }

            return false;
        }

        public IUI CloseLast()
        {
            if (_uis.Count > 0)
            {
                var ui = _uis.Pop();
                ui.Close();
                return ui;
            }

            return null;
        }

        public void CloseAll()
        {
            while (_uis.Count > 0)
            {
                var ui = _uis.Pop();
                ui.Close();
            }
        }

    }
}