using System;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.EventSystems;
using UnityEngine.UI;

namespace SC.XR.Unity.Module_Keyboard
{
    public abstract class SCKeyboardBaseKey : MonoBehaviour, IPointerDownHandler
    {
        [SerializeField]
        private string m_Value;
        public virtual string Value {
            get {
                return m_Value;
            }
            set {                
                m_Value = value;
            }
        }
               
        private SCKeyboardMono m_SCKeyboardMono;
        protected SCKeyboardMono SCKeyboardMono {
            get
            {
                if (m_SCKeyboardMono == null)
                {
                    m_SCKeyboardMono = GetComponentInParent<SCKeyboardMono>();
                }
                return m_SCKeyboardMono;
            }
        }

        public Action OnKeyClickEvent;

        Button button;
        UnityAction call;

        protected virtual void Awake()
        {
            RegistKey();
        }

        protected virtual void OnEnable()
        {
            Init();
        }

        protected virtual void OnDisable()
        {

        }

        protected virtual void Start()
        {
            
        }

        protected virtual void OnDestroy()
        {
            UnRegistKey();
        }

        public virtual void Init()
        {

        }

        protected virtual void RegistKey()
        {
            if (button == null) button = this.GetComponent<Button>();
            if (call == null) call = OnKeyClick;
            if (button)
            {
                button.onClick.AddListener(call);
            }
        }

        protected virtual void UnRegistKey()
        {
            if (button)
            {
                button.onClick.RemoveListener(call);
                button = null;
                call = null;
            }
        }

        protected virtual void OnKeyClick() 
        {
            OnKeyClickEvent?.Invoke();
        }

        protected virtual void OnKeyClick(BaseEventData eventData) { OnKeyClickEvent?.Invoke(); }

        public virtual void OnPointerDown(PointerEventData eventData)
        {
            SCKeyboardMono.OnPointerDown?.Invoke(eventData);
        }
    }
}