using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using JC.Unity.UI;
using JC.Unity;

public class MouseConfirm : MonoBehaviour
{
    [SerializeField] Button btnConfirm;

    Selectable _targetSelectable;
    Selectable _selfSelectable;
    bool _prepared = false;

    void Awake() {
        btnConfirm.gameObject.SetActive(false);
    }
    
    void Start()
    {
        _selfSelectable = btnConfirm.GetComponent<Selectable>();
        btnConfirm.onClick.AddListener(OnClikc_Confirm);
    }

    void Update()
    {
        if (!SB_EventSystem.ins.simulateMouseIsAwaked) {
            Hide();
            return;
        }
        if (!SB_EventSystem.ins.simulateMouse.GetCurrentSelectable()) {
            Hide();
            return;
        }
        if (_targetSelectable) {
            if (!_prepared) {
                _prepared = true;

                RectTransform rtf = _targetSelectable.transform as RectTransform;
                Vector3 size = rtf.rect.size;
                if (size.x == 0 || size.y == 0) {
                    Hide();
                    return;
                } 
                Vector3 maxSize = RectTransformUtils.CanvasV3ToScreenV3(Vector3.one * 120, transform as RectTransform); 
                size = RectTransformUtils.CanvasV3ToScreenV3(size, rtf);
                if (size.x > maxSize.x || size.y > maxSize.y) {
                    Hide();
                    return;
                }
        
                btnConfirm.transform.position = RectTransformUtils.GetPositionByPivot(_targetSelectable.transform as RectTransform, Vector2.one * 0.5f);
                btnConfirm.gameObject.SetActive(true);
                GetComponent<Canvas>().sortingOrder = _targetSelectable.GetComponentInParent<Canvas>().sortingOrder + 1;
            }
        } else {
            Hide();
        }
    }

    void Show() {
        _prepared = false;
        if (!gameObject.activeSelf) gameObject.SetActive(true);
    }

    void Hide() {
        _targetSelectable = null;
        btnConfirm.gameObject.SetActive(false);
        if (gameObject.activeSelf) gameObject.SetActive(false);
    }

    void OnClikc_Confirm()
    {
        try
        {
            if (_targetSelectable && _targetSelectable.interactable) {
                Button btn = _targetSelectable.GetComponent<Button>();
                btn.onClick.Invoke();
            }
        }
        catch (System.Exception e)
        {
            Debug.LogError(e.Message);
            Debug.LogError(e.StackTrace);
        }
        Hide();
    }

    public void SetSelectable(Selectable selectable) {
        if (!selectable) return;
        if (selectable == _targetSelectable) return;
        if (selectable == _selfSelectable) return;
        _targetSelectable = selectable;
        Show();
    }
}