using UnityEngine;
using UnityEngine.UI;

public class DELETE : MonoBehaviour
{
    // La corbeille n'est plus un bouton du panneau OBSTACLES : elle est posee en haut a droite
    // de la vignette de l'objet lui-meme. Seul l'objet selectionne l'affiche, et il se distingue
    // par un contour vert (l'image "Circle" deja presente sur chaque vignette).
    public const string BTN = "BTN_Delete";

    const float Size = 42f;
    static readonly Color Green  = new(0f, 0.85f, 0.2f, 1f);
    static readonly Color Hidden = new(1f, 0f, 0f, 0f);
    static readonly Color Red    = new(0.85f, 0.15f, 0.15f, 1f);

    public static void Delete()
    {
        Delete(_G.SELECTED);
    }

    public static void Delete(string Oname)
    {
        if (string.IsNullOrEmpty(Oname)) return;

        string Ostring = Oname.Replace("clone", "_");
        string[] parts = Ostring.Split('_');
        if (parts.Length > 1 && int.TryParse(parts[1], out int nO) && _G.OBJs[nO] != null) _G.OBJs[nO][0] = "null";

        GameObject O = GameObject.Find(Oname);
        if (O != null) DestroyImmediate(O);

        if (_G.SELECTED == Oname) _G.SELECTED = "";
        Refresh();
    }

    // Remet a jour toutes les vignettes de OBSTACLELIST : contour vert et corbeille sur l'objet
    // selectionne uniquement. Hors du panneau OBSTACLES on masque les corbeilles sans toucher aux
    // contours : ils y servent d'indicateur de configuration (rouge = a positionner, vert = fait).
    public static void Refresh()
    {
        GameObject list = Get.o2("Canvas", "OBSTACLELIST");
        if (list == null) return;

        bool onObstacles = _G.PNL == "OBSTACLES";
        foreach (Transform O in list.transform)
        {
            bool selected = onObstacles && O.name == _G.SELECTED;

            Transform btn = O.Find(BTN);
            if (btn == null && selected) btn = Build(O).transform;
            if (btn != null) btn.gameObject.SetActive(selected);

            if (!onObstacles) continue;
            Transform circle = O.Find("Circle");
            if (circle != null) circle.GetComponent<Image>().color = selected ? Green : Hidden;
        }
    }

    // Pendant un deplacement la corbeille generait le drag : on la retire de toutes les vignettes.
    public static void HideButtons()
    {
        GameObject list = Get.o2("Canvas", "OBSTACLELIST");
        if (list == null) return;

        foreach (Transform O in list.transform)
        {
            Transform btn = O.Find(BTN);
            if (btn != null) btn.gameObject.SetActive(false);
        }
    }

    static GameObject Build(Transform O)
    {
        GameObject B = new(BTN, typeof(RectTransform), typeof(CanvasRenderer), typeof(Image), typeof(Button));
        B.layer = O.gameObject.layer;
        B.transform.SetParent(O, false);

        RectTransform rt = B.GetComponent<RectTransform>();
        rt.anchorMin = rt.anchorMax = Vector2.one;// coin haut/droit de la vignette
        rt.pivot = new Vector2(0.5f, 0.5f);
        rt.anchoredPosition = Vector2.zero;
        rt.sizeDelta = new Vector2(Size, Size);
        rt.localScale = Vector3.one;

        Image bg = B.GetComponent<Image>();
        bg.sprite = Resources.Load<Sprite>("Images/Empty round");
        bg.color = Red;

        GameObject icon = new("Icon", typeof(RectTransform), typeof(CanvasRenderer), typeof(Image));
        icon.layer = B.layer;
        icon.transform.SetParent(B.transform, false);

        RectTransform ir = icon.GetComponent<RectTransform>();
        ir.anchorMin = ir.anchorMax = ir.pivot = new Vector2(0.5f, 0.5f);
        ir.anchoredPosition = Vector2.zero;
        ir.sizeDelta = new Vector2(Size * 0.42f, Size * 0.52f);

        Image im = icon.GetComponent<Image>();
        im.sprite = Resources.Load<Sprite>("Images/Icons/Buttons/IBasket");
        im.raycastTarget = false;// le clic doit atteindre le bouton, pas l'icone

        string Oname = O.name;
        B.GetComponent<Button>().onClick.AddListener(() => Delete(Oname));
        return B;
    }
}