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

namespace SC.XR.Unity.Module_Keyboard
{
    public class SCKeyboard3DKey : SCKeyboardBaseKey
    {
        #region KeyboardKeyEnums
        public SCKeyboardKeyEnum m_SCKeyboardKeyEnum;

        public SpecialKeyEnum m_SpecialKeyEnum;

        public LanguageKeyEnum m_LanguageKeyEnum;
        #endregion

        #region KeyboardKey Init Events
        /// <summary>
        /// Init Normal Key
        /// </summary>
        public virtual void OnNormalKeyInit()
        {
        }

        /// <summary>
        /// Init Symbol Key
        /// </summary>
        public virtual void OnSymbolKeyInit()
        {
        }

        /// <summary>
        /// Init Special Key
        /// </summary>
        public virtual void OnSpecialKeyInit()
        {
        }

        /// <summary>
        /// Init Pinyin Key
        /// </summary>
        public virtual void OnPinyinKeyInit()
        {
        }

        /// <summary>
        /// Init Language Key
        /// </summary>
        public virtual void OnLanguageKeyInit()
        {
        }

        /// <summary>
        /// Init Prompt Key
        /// </summary>
        public virtual void OnPromptKeyInit()
        {
        }
        #endregion

        #region KeyboardKey Regist Events
        /// <summary>
        /// Regist Normal Key
        /// </summary>
        public virtual void OnNormalKeyRegist()
        {
            OnKeyClickEvent += OnNormalKeyClick;
        }

        /// <summary>
        /// Regist Symbol Key
        /// </summary>
        public virtual void OnSymbolKeyRegist()
        {
            OnKeyClickEvent += OnNormalKeyClick;

            TextMesh textMesh = this.GetComponentInChildren<TextMesh>();
            this.Value = textMesh.text;

            if (SCKeyboardMono.symbolKeysDic.ContainsKey(this.Value))
            {
                List<SCKeyboardBaseKey> scKeyboard2DKeys = SCKeyboardMono.symbolKeysDic[this.Value];
                scKeyboard2DKeys.Add(this);
                SCKeyboardMono.symbolKeysDic[this.Value] = scKeyboard2DKeys;
            }
            else
            {
                List<SCKeyboardBaseKey> scKeyboard2DKeys = new List<SCKeyboardBaseKey>();
                scKeyboard2DKeys.Add(this);
                SCKeyboardMono.symbolKeysDic.Add(this.Value, scKeyboard2DKeys);
            }
        }

        /// <summary>
        /// Regist Special Key
        /// </summary>
        public virtual void OnSpecialKeyRegist()
        {
            OnKeyClickEvent += OnSpecialKeyClick;
        }

        /// <summary>
        /// Regist Pinyin Key
        /// </summary>
        public virtual void OnPinyinKeyRegist()
        {
            OnKeyClickEvent += OnPinyinKeyClick;

            TextMesh textMesh = this.GetComponentInChildren<TextMesh>();
            this.Value = textMesh.text;

            SCKeyboardMono.OnKeyboardShifted += Shift;
        }

        /// <summary>
        /// Regist Language Key
        /// </summary>
        public virtual void OnLanguageKeyRegist()
        {
            OnKeyClickEvent += OnLanguageKeyClick;
        }

        /// <summary>
        /// Regist Prompt Key
        /// </summary>
        public virtual void OnPromptKeyRegist()
        {
            OnKeyClickEvent += OnPromptKeyClick;
        }
        #endregion

        #region KeyboardKey UnRegist Events
        /// <summary>
        /// UnRegist Normal Key
        /// </summary>
        public virtual void OnNormalKeyUnRegist()
        {
            OnKeyClickEvent -= OnNormalKeyClick;
        }

        /// <summary>
        /// UnRegist Symbol Key
        /// </summary>
        public virtual void OnSymbolKeyUnRegist()
        {
            OnKeyClickEvent -= OnNormalKeyClick;
            SCKeyboardMono.symbolKeysDic.Clear();
        }

        /// <summary>
        /// UnRegist Special Key
        /// </summary>
        public virtual void OnSpecialKeyUnRegist()
        {
            OnKeyClickEvent -= OnSpecialKeyClick;
        }

        /// <summary>
        /// UnRegist Pinyin Key
        /// </summary>
        public virtual void OnPinyinKeyUnRegist()
        {
            OnKeyClickEvent -= OnPinyinKeyClick;
            SCKeyboardMono.OnKeyboardShifted -= Shift;
        }

        /// <summary>
        /// UnRegist Language Key
        /// </summary>
        public virtual void OnLanguageKeyUnRegist()
        {
            OnKeyClickEvent -= OnLanguageKeyClick;
        }

        /// <summary>
        /// UnRegist Prompt Key
        /// </summary>
        public virtual void OnPromptKeyUnRegist()
        {
            OnKeyClickEvent -= OnPromptKeyClick;
        }
        #endregion

        #region KeyboardKey Click Events
        public void OnNormalKeyClick()
        {
            SCKeyboardMono.OnNormalKeyClick(this.Value);
        }

        public void OnSpecialKeyClick()
        {
            SCKeyboardMono.OnSpecialKeyClick(m_SpecialKeyEnum);
            switch (m_SpecialKeyEnum)
            {
                case SpecialKeyEnum.Cn:
                    GetComponentInChildren<TextMesh>().text = "英";
                    m_SpecialKeyEnum = SpecialKeyEnum.En;
                    break;
                case SpecialKeyEnum.En:
                    GetComponentInChildren<TextMesh>().text = "中";
                    m_SpecialKeyEnum = SpecialKeyEnum.Cn;
                    break;
            }
        }

        public void OnPinyinKeyClick()
        {
            switch (SCKeyboardMono.presentKeyboardState)
            {
                case KeyboardState.Cn:
                    if (SCKeyboardMono.IsShifted)
                    {
                        SCKeyboardMono.OnNormalKeyClick(this.Value);
                        return;
                    }
                    SCKeyboardMono.OnPinyinKeyClick(this.Value);
                    break;
                case KeyboardState.En:
                    SCKeyboardMono.OnNormalKeyClick(this.Value);
                    break;
            }
        }

        public void OnLanguageKeyClick()
        {
            SCKeyboardMono.OnLanguageKeyClick(m_LanguageKeyEnum);
        }

        public void OnPromptKeyClick()
        {
            TextMesh textMesh = this.GetComponentInChildren<TextMesh>();
            SCKeyboardMono.OnPromptKeyClick(textMesh.text);
            SCKeyboardMono.OnKeyClick?.Invoke(textMesh.text);
            for (int i = 0; i < textMesh.text.Length; i++)
            {
                SCKeyboardMono.OnWebKeyClick?.Invoke(textMesh.text[i].ToString());
            }
        }
        #endregion

        #region KeyboardKey State Events
        protected virtual void Shift(bool isShifted)
        {
            TextMesh textMesh = this.GetComponentInChildren<TextMesh>();
            if (isShifted)
            {
                string textUpper = textMesh.text.ToUpper();
                textMesh.text = textUpper;
                this.Value = textUpper;
            }
            else
            {
                string textLower = textMesh.text.ToLower();
                textMesh.text = textLower;
                this.Value = textLower;
            }
        }
        #endregion

        protected InteractionPressableEntry interactionPressableEntry;
        protected InteractionTouchableEntry interactionTouchableEntry;
        public override void Init()
        {
            base.Init();
            switch (m_SCKeyboardKeyEnum)
            {
                case SCKeyboardKeyEnum.ABC:
                case SCKeyboardKeyEnum.Num:
                    OnNormalKeyInit();
                    break;
                case SCKeyboardKeyEnum.Symbol:
                    OnSymbolKeyInit();
                    break;
                case SCKeyboardKeyEnum.Special:
                    OnSpecialKeyInit();
                    break;
                case SCKeyboardKeyEnum.Pinyin:
                    OnPinyinKeyInit();
                    break;
                case SCKeyboardKeyEnum.Prompt:
                    OnPromptKeyInit();
                    break;
                case SCKeyboardKeyEnum.Meme:
                    break;
                case SCKeyboardKeyEnum.Language:
                    OnLanguageKeyInit();
                    break;
                default:
                    OnNormalKeyInit();
                    break;
            }
        }

        protected override void RegistKey()
        {
            PressableButton pressableButton = this.GetComponent<PressableButton>();
            TouchableButton touchableButton = this.GetComponent<TouchableButton>();

            if (pressableButton && touchableButton)
            {
                InteractionEvent interActionEvent = new InteractionEvent();
                interActionEvent.AddListener(OnKeyClick);
                interactionPressableEntry = new InteractionPressableEntry() { eventID = InteractionPressableType.PointerClick, callback = interActionEvent };
                interactionTouchableEntry = new InteractionTouchableEntry() { eventID = InteractionTouchableType.PokePress, callback = interActionEvent };

                pressableButton.Triggers.Add(interactionPressableEntry);
                touchableButton.Triggers.Add(interactionTouchableEntry);
            }
            switch (m_SCKeyboardKeyEnum)
            {
                case SCKeyboardKeyEnum.ABC:
                case SCKeyboardKeyEnum.Num:
                    OnNormalKeyRegist();
                    break;
                case SCKeyboardKeyEnum.Symbol:
                    OnSymbolKeyRegist();
                    break;
                case SCKeyboardKeyEnum.Special:
                    OnSpecialKeyRegist();
                    break;
                case SCKeyboardKeyEnum.Pinyin:
                    OnPinyinKeyRegist();
                    break;
                case SCKeyboardKeyEnum.Prompt:
                    OnPromptKeyRegist();
                    break;
                case SCKeyboardKeyEnum.Meme:
                    break;
                case SCKeyboardKeyEnum.Language:
                    OnLanguageKeyRegist();
                    break;
                default:
                    OnNormalKeyRegist();
                    break;
            }
        }
        protected override void UnRegistKey()
        {
            PressableButton pressableButton = this.GetComponent<PressableButton>();
            TouchableButton touchableButton = this.GetComponent<TouchableButton>();

            if (pressableButton && touchableButton)
            {
                pressableButton.Triggers.Remove(interactionPressableEntry);
                touchableButton.Triggers.Remove(interactionTouchableEntry);
            }
            switch (m_SCKeyboardKeyEnum)
            {
                case SCKeyboardKeyEnum.ABC:
                case SCKeyboardKeyEnum.Num:
                    OnNormalKeyUnRegist();
                    break;               
                case SCKeyboardKeyEnum.Symbol:
                    OnSymbolKeyUnRegist();
                    break;
                case SCKeyboardKeyEnum.Special:
                    OnSpecialKeyUnRegist();
                    break;
                case SCKeyboardKeyEnum.Pinyin:
                    OnPinyinKeyUnRegist();
                    break;
                case SCKeyboardKeyEnum.Prompt:
                    OnPromptKeyUnRegist();
                    break;
                case SCKeyboardKeyEnum.Meme:
                    break;
                case SCKeyboardKeyEnum.Language:
                    OnLanguageKeyUnRegist();
                    break;
                default:
                    OnNormalKeyUnRegist();
                    break;
            }
        }
    }
}