using System;
using System.Collections.Generic;
using UnityEngine;
using FairyGUI;
using Articy.Unity;

namespace Game
{
    public interface IUIPageBase
    {
        void Update();
        void FixedUpdate();
        void Destroy();
        void Create(EuiPage pageType);
        void Open(params object[] values);
        void Close();
        bool IsActive();
        bool IsFullPage();
        List<EuiPage> GetSubPages();
        void AddSubPage(EuiPage subPage);
        void RemoveSubPage(EuiPage subPage);
        void RemoveSubPageAll();
    }

    public class UIPageBase<T> : MetaDataHandler, IUIPageBase where T : GComponent, new()
    {
        protected T View;
        private EuiPage _mPageType;
        private bool _isFullScreenUI;
        private readonly List<EuiPage> _subPageList;

        protected UIPageBase()
        {
            _subPageList = new List<EuiPage>();
        }

        public virtual void Update()
        {
        }

        public virtual void FixedUpdate()
        {
        }

        public bool IsActive()
        {
            return View.visible;
        }

        public bool IsFullPage()
        {
            return _isFullScreenUI;
        }

        protected virtual void OnInput(PPlayerInput context)
        {
        }

        protected virtual void OnDestroy()
        {
        }

        protected virtual void OnCreate()
        {
        }

        protected virtual void OnOpen()
        {
        }

        protected virtual void OnOpen(params object[] values)
        {
        }

        protected virtual void OnClose()
        {
        }

        public void Create(EuiPage pageType)
        {
            _mPageType = pageType;
            OnCreate();
        }

        public void Destroy()
        {
            OnDestroy();
        }

        public void Open(params object[] values)
        {
            View.visible = true;
            EventManager.Instance.AddEvent<PPlayerInput>(EEvent.PlayerInput, OnInput);
            if (values.Length > 0)
            {
                OnOpen(values);
            }
            else
            {
                OnOpen();
            }
            CreateBind();
        }

        public void Close()
        {
            View.visible = false;
            EventManager.Instance.RemoveEvent<PPlayerInput>(EEvent.PlayerInput, OnInput);
            ClearBind();
            OnClose();
        }

        protected void CreateUI(bool isFull = false)
        {
            View = (T)typeof(T).GetMethod("CreateInstance")?.Invoke(null, null);
            if (View == null) return;
            View.sortingOrder = (int)_mPageType;
            View.fairyBatching = true;
            _isFullScreenUI = isFull;
            GRoot.inst.AddChild(View);
        }

        public List<EuiPage> GetSubPages()
        {
            return _subPageList;
        }

        public void AddSubPage(EuiPage subPage)
        {
            _subPageList.Add(subPage);
        }

        public void RemoveSubPage(EuiPage subPage)
        {
            _subPageList.Remove(subPage);
        }

        public void RemoveSubPageAll()
        {
            _subPageList.Clear();
        }

        protected Vector3 GetScreenPos(Vector3 pos)
        {
            return CameraManager.Instance.GetScreenPos(pos);
        }

        protected NTexture Texture(ArticyObject icon)
        {
            var texture = Util.LoadDraft<Texture2D>(icon);
            return new NTexture(texture);
        }
    }
}