using System.Linq;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

public class hintUI : MonoBehaviour, IPointerEnterHandler, IPointerDownHandler, IPointerExitHandler, IPointerUpHandler
{
    
    [HideInInspector] public Manager manager;
    public bool isGreen = true;
    public Image[] img;
    [HideInInspector]
    private GameObject hintObj;
    public GameObject go;
    [SerializeField]
    private string t;
    //RectTransform rectTransform;
    public void Start()
    {
        if (img.Length != 2)
            img = this.GetComponentsInChildren<Image>();
        OnGreen(img, 0);
        manager = GameObject.Find("Manager").GetComponent<Manager>();
        //rectTransform = GetComponent<RectTransform>();
        //t = "Внешний вид";
    }
    private void OnGreen(Image[] img, int k=-1)
    {
        //if(img.Length != 2) 
        //    img = this.GetComponentsInChildren<Image>();

        for (var i = 0; i < img.Length; i++)
        {
            if(img[i].color != Color.gray)
                img[i].color = (isGreen) ? Color.green : Color.white;
            if(k >= 0 && i != k)
                img[i].gameObject.SetActive(false);
        }
        if(k >= 0 && k < img.Length) img[k].gameObject.SetActive(true);
    }
    public void OnPointerUp(PointerEventData eventData)
    {
        OnGreen(img);
    }

    public void OnPointerEnter(PointerEventData eventData)
    {
        OnGreen(img, 1);
        var h = GameObject.Find("hintContainer");
        if (h != null)
        {
            Destroy(h);
        }
        hintObj = OnHint(this.gameObject, go, t);
    }
    public GameObject OnHint(GameObject btn, GameObject objGo, string t)
    {
        Vector2 hintPos = new Vector2(btn.transform.localPosition.x + 15, btn.transform.localPosition.y + 55);//позиция хинта
        GameObject hint = Instantiate(objGo, btn.transform.parent);//создание хинта
        hint.name = "hintContainer";
        hint.transform.localPosition = hintPos;//позиция хинта устанавливаем
        var hintBase = hint.GetComponentInChildren<Image>();
        Text txt = hint.GetComponentInChildren<Text>();
        txt.text = t;
        var s = txt.text.Length;
        //Debug.Log($"s = {s}");
        RectTransform rectTransformText = txt.GetComponent<RectTransform>();
        rectTransformText.SetSizeWithCurrentAnchors(RectTransform.Axis.Horizontal, s * 10 + 20);
        RectTransform rectTransformBase = hintBase.GetComponent<RectTransform>();
        rectTransformBase.SetSizeWithCurrentAnchors(RectTransform.Axis.Horizontal, rectTransformText.rect.width + 35);
        if ((rectTransformBase.rect.width + hintBase.transform.position.x) > Screen.width)
        {
            hint.transform.localPosition = new Vector2(hint.transform.localPosition.x - rectTransformBase.rect.width/2 - 20, hint.transform.localPosition.y);
            var hintTr = hint.transform.GetChild(1).GetComponent<Image>();
            hintTr.transform.localPosition = new Vector2(hintTr.transform.localPosition.x + rectTransformBase.rect.width/2 + 15, hintTr.transform.localPosition.y);
            //Debug.Log($"hintTr.name = {hintTr.name}");
        }
        return hint;

    }
    public void OnPointerDown(PointerEventData eventData)
    {
        isGreen = true;
        OnParentGreenOff();
        OnGreen(img);
    }

    public void OnPointerExit(PointerEventData eventData)
    {
        OnGreen(img, 0);
        Destroy(hintObj);
    }
    void OnParentGreenOff()
    {
        var btn = gameObject.transform.parent.GetComponentsInChildren<hintUI>();
        for(var i=0; i<btn.Length; i++)
        {
            if (btn[i] != this)
            {
                btn[i].isGreen = false;
                btn[i].OnGreen(btn[i].img,0);
            }
        }
    }
}