using System;
using System.Collections.Generic;
using AibisDream.Framework;
using AibisDream.Kit;
using TMPro;
using UnityEngine;
using UnityEngine.UI;

namespace AibisDream
{
    public class DialogCanvasManager : Singleton<DialogCanvasManager>
    {
        private const string BubbleView = "Dialog Bubble View";
        private const string OldBoxView = "Dialog Box";

        private const string QuickTalk = "Quick Talk";

        #region 引用

        private IDialogView _bubbleView;
        private IDialogView _oldBoxView;

        private IDialogView _curView;

        private GameObject _quickTalkButton;

        #endregion

        private List<IUnRegister> _rmvList = new();


        public override void OnSingletonInit()
        {
            InitDialogViews();
            InitQuickTalkButton();
            InitEvent();
            // 默认为旧Box
            _curView = _bubbleView;
        }

        private void InitEvent()
        {
            _rmvList.Add(EnumEventSystem.Global.Register<DialogEventEnum, DialogLine>(DialogEventEnum.LineStart, AddDialogueLine));
            _rmvList.Add(EnumEventSystem.Global.Register<DialogEventEnum, DialogLine>(DialogEventEnum.OptionSelected, AddDialogueLine));
            _rmvList.Add(EnumEventSystem.Global.Register(EventEnum.NextYarn, CleanDialogHistory));
        }

        public override void OnSingletonDestroy()
        {
            // 销毁前处理事件
            _rmvList.ForEach(item => item.UnRegister());
        }

        #region 对话结束后隐藏

        private void OnEnable()
        {
            DialogController.OnDialogueComplete += HideDialog;
        }

        private void OnDisable()
        {
            DialogController.OnDialogueComplete -= HideDialog;
        }

        private void HideDialog()
        {
            _curView.HideDialog();
        }

        #endregion

        private void Update()
        {
            if (Input.GetKeyDown(KeyCode.Q) && Input.GetKey(KeyCode.P))
            {
                _quickTalkButton.SetActive(!_quickTalkButton.activeSelf);
            }
        }

        #region 对话框相关处理

        private void InitDialogViews()
        {
            _bubbleView = transform.Find(BubbleView).GetComponent<IDialogView>();
            _oldBoxView = transform.Find(OldBoxView).GetComponent<IDialogView>();

            _bubbleView.HideDialog();
            _oldBoxView.HideDialog();
        }

        private void InitQuickTalkButton()
        {
            _quickTalkButton = transform.Find(QuickTalk).gameObject;
            _quickTalkButton.GetComponent<Button>().onClick.AddListener(SwitchQuickTalkMode);
        }

        private void SwitchQuickTalkMode()
        {
            DialogController.Instance.quickRunMode = !DialogController.Instance.quickRunMode;
            _quickTalkButton.GetComponent<Image>().color =
                DialogController.Instance.quickRunMode ? Color.gray : Color.white;
        }

        /// <summary>
        /// 切换对话UI
        /// </summary>
        /// <param name="viewType">UI类型</param>
        /// <returns></returns>
        public IDialogView SwitchDialogView(DialogViewType viewType)
        {
            var newDlg = viewType switch
            {
                DialogViewType.Bubble => _bubbleView,
                DialogViewType.OldBox => _oldBoxView,
                _ => _oldBoxView
            };

            if (_curView != newDlg)
            {
                _curView.HideDialog();
                _curView = newDlg;
            }

            return _curView;
        }

        /// <summary>
        /// 获取当前正在使用的Dialog View
        /// </summary>
        /// <returns>当前正在使用的Dialog View</returns>
        /// <exception cref="Exception">未找到Canvas</exception>
        public static IDialogView GetCurView()
        {
            return Instance._curView;
        }

        #endregion

        #region 对话回顾

        [Header("对话回顾组件")] [SerializeField] private TMP_Text logText;

        /// <summary>
        /// 记录对话
        /// </summary>
        /// <param name="line">对话</param>
        private void AddDialogueLine(DialogLine line)
        {
            logText.text += line.GetDialogText();
        }

        private void CleanDialogHistory()
        {
            logText.text = null;
        }

        /// <summary>
        /// 切换对话回顾展示状态
        /// </summary>
        public void ControlDialogHistory()
        {
            var logObj = transform.Find("Dialogue Log").gameObject;
            logObj.SetActive(!logObj.activeSelf);
            EnumEventSystem.Global.Send(EventEnum.Menu, logObj.activeSelf);
        }

        #endregion
    }

    public enum DialogViewType
    {
        Bubble,
        OldBox
    }
}