using UnityEngine;
using Game.Common;

namespace Game
{
    public class PageDrama : UIPageBase<ViewDrama>
    {
        private string _nameLeft = "";
        private string _nameRight = "";
        private const float ShowCharWaitTimeMax = 0.02f;
        private float _showCharWaitTime;
        private int _textNumNow;
        private int _textNumMax;
        private string _textNow = "";
        private int _choiceNow = 0;
        private int _choiceMax = 0;
        private bool _isChoiceOpen = false;
        public PageDrama()
        {
        }
        protected override void OnCreate()
        {
            CreateUI(true);
        }
        protected override void OnDestroy()
        {
        }
        protected override void OnOpen()
        {
            EventManager.Instance.AddEvent<PDialog>(EEvent.Dialog, OnDialog);
            EventManager.Instance.AddEvent<PDialogChoice>(EEvent.DialogChoice, OnDialogChoice);
            EventManager.Instance.AddEvent(EEvent.DialogEnd, OnDialogEnd);
            Util.SetControl(false);
        }
        protected override void OnClose()
        {
            EventManager.Instance.RemoveEvent<PDialog>(EEvent.Dialog, OnDialog);
            EventManager.Instance.RemoveEvent<PDialogChoice>(EEvent.DialogChoice, OnDialogChoice);
            EventManager.Instance.RemoveEvent(EEvent.DialogEnd, OnDialogEnd);
            Util.SetControl(true);
            View.m_c1.selectedIndex = 0;
            View.m_c4.selectedIndex = 0;
            View.m_c2.selectedIndex = 0;
            View.m_c3.selectedIndex = 0;
            View.m_c5.selectedIndex = 0;
            _isChoiceOpen = false;
            _choiceMax = 0;
            _choiceNow = 0;
            _nameLeft = "";
            _nameRight = "";
            ShowText("");
        }
        public override void Update()
        {
            if (_textNumNow == _textNumMax)
            {
                View.m_content.m_c1.selectedIndex = 1;
                return;
            }
            if (_showCharWaitTime > 0)
            {
                _showCharWaitTime -= Time.deltaTime;
                return;
            }
            _textNumNow++;
            _showCharWaitTime = ShowCharWaitTimeMax;
            View.m_content.m_text.text = _textNow.Substring(0, _textNumNow);
        }
        private void ShowText(string text)
        {
            _textNow = text;
            _showCharWaitTime = 0;
            _textNumMax = text.Length;
            _textNumNow = 0;
            View.m_content.m_c1.selectedIndex = 0;
        }
        private void RefreshChoiceOpen()
        {
            View.m_c4.selectedIndex = _isChoiceOpen ? 0 : 1;
            View.m_c6.selectedIndex = _isChoiceOpen ? 0 : 1;
            View.m_c5.selectedIndex = _isChoiceOpen ? 1 : 0;
        }
        private void RefreshChoiceSelecet()
        {
            var choiceList = View.m_choice.GetChildren();
            for (int i = 0; i < choiceList.Length; i++)
            {
                var choice = choiceList[i] as ViewDramaChoiceItem;
                choice.m_c1.selectedIndex = i == _choiceNow ? 1 : 0;
            }
        }
        private void OnDialogChoice(PDialogChoice param)
        {
            var choiceList = View.m_choice;
            choiceList.RemoveChildrenToPool();
            _choiceMax = param.Choices.Count;
            _choiceNow = 0;
            _isChoiceOpen = false;
            foreach (var item in param.Choices)
            {
                var choiceItem = choiceList.AddItemFromPool() as ViewDramaChoiceItem;
                choiceItem.m_text.text = item;
            }
            RefreshChoiceSelecet();

        }
        private void OnDialog(PDialog param)
        {
            var isRight = false;
            var needRefresh = false;
            var name = param.Name;
            //优先检测已经存在的
            if (_nameLeft == name)
            {
                isRight = false;
            }
            else if (_nameRight == name)
            {
                isRight = true;
            }
            else
            {
                needRefresh = true;
                //检测空位置
                if (string.IsNullOrEmpty(_nameLeft))
                {
                    isRight = false;
                }
                else if (string.IsNullOrEmpty(_nameRight))
                {
                    isRight = true;
                }
                else
                {
                    //没有空位置 占左边位置
                    isRight = false;
                }
            }
            if (isRight)
            {
                _nameRight = name;
            }
            else
            {
                _nameLeft = name;
            }

            var hasLeft = !string.IsNullOrEmpty(_nameLeft);
            var hasRight = !string.IsNullOrEmpty(_nameRight);

            //左右
            View.m_c1.selectedIndex = isRight ? 2 : 1;
            //显隐
            View.m_c4.selectedIndex = 1;
            View.m_c2.selectedIndex = hasLeft ? 1 : 0;
            View.m_c3.selectedIndex = hasRight ? 1 : 0;
            //刷新文本
            View.m_nameLable.m_text.text = param.Name;
            ShowText(param.Content);
            //刷新立绘
            if (needRefresh)
            {
                if (isRight)
                {
                    View.m_picRight.texture = Texture(param.Pic);
                }
                else
                {
                    View.m_picLeft.texture = Texture(param.Pic);
                }
            }

        }
        private void OnDialogEnd()
        {
            UIManager.Instance.Close();
        }
        protected override void OnInput(PPlayerInput context)
        {
            if (context.Action == EKeyActionType.Press)
            {
                if (context.Key == EFunctionKey.Menu)
                {
                    Util.EndDrama();
                }
                if (context.Key == EFunctionKey.Up || context.Key == EFunctionKey.Down)
                {
                    if (!_isChoiceOpen)
                    {
                        return;
                    }
                    var newIndex = _choiceNow;
                    if (context.Key == EFunctionKey.Up)
                    {
                        newIndex--;
                    }
                    else
                    {
                        newIndex++;
                    }
                    _choiceNow = (newIndex + _choiceMax) % _choiceMax;
                    RefreshChoiceSelecet();
                }
                if (context.Key == EFunctionKey.Jump)
                {
                    if (_choiceMax != 0)
                    {
                        //选择
                        if (!_isChoiceOpen)
                        {
                            _isChoiceOpen = true;
                            RefreshChoiceOpen();
                            var c1Index = View.m_c1.selectedIndex;
                            if (c1Index != 0)
                            {
                                View.m_c1.selectedIndex = c1Index == 1 ? 2 : 1;
                            }
                        }
                        else
                        {
                            _choiceMax = 0;
                            _isChoiceOpen = false;
                            RefreshChoiceOpen();
                            Util.NextDramaChoice(_choiceNow);
                        }
                    }
                    else
                    {
                        //播放
                        if (_textNumMax != _textNumNow)
                        {
                            _textNumNow = _textNumMax - 1;
                            _showCharWaitTime = 0;
                        }
                        else
                        {
                            Util.NextDrama();
                        }
                    }


                }
                if (context.Key == EFunctionKey.Bag)
                {
                    UIManager.Instance.Close();
                }
            }
        }
    }
}