using Core;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;

namespace Minigames.StatueDressup.Controllers
{
    /// <summary>
    /// Individual photo thumbnail in the gallery grid.
    /// Handles click to show enlarged view.
    /// </summary>
    public class PhotoGridItem : MonoBehaviour, IPointerClickHandler
    {
        [Header("References")]
        [SerializeField] private Image thumbnailImage;
        [SerializeField] private GameObject loadingIndicator;
        
        private string photoId;
        private StatuePhotoGalleryController galleryController;
        
        /// <summary>
        /// Initialize grid item with photo ID
        /// </summary>
        public void Initialize(string newPhotoId, StatuePhotoGalleryController controller)
        {
            this.photoId = newPhotoId;
            galleryController = controller;
            
            // Show loading state
            if (loadingIndicator != null)
                loadingIndicator.SetActive(true);
            
            if (thumbnailImage != null)
                thumbnailImage.enabled = false;
        }
        
        /// <summary>
        /// Set the thumbnail texture
        /// </summary>
        public void SetThumbnail(Texture2D thumbnail)
        {
            if (thumbnail == null)
            {
                Logging.Warning($"[PhotoGridItem] Null thumbnail for photo: {photoId}");
                return;
            }
            
            // Create sprite from thumbnail
            Sprite thumbnailSprite = Sprite.Create(
                thumbnail,
                new Rect(0, 0, thumbnail.width, thumbnail.height),
                new Vector2(0.5f, 0.5f)
            );
            
            if (thumbnailImage != null)
            {
                thumbnailImage.sprite = thumbnailSprite;
                thumbnailImage.enabled = true;
            }
            
            // Hide loading indicator
            if (loadingIndicator != null)
                loadingIndicator.SetActive(false);
        }
        
        /// <summary>
        /// Handle click to enlarge/shrink photo
        /// </summary>
        public void OnPointerClick(PointerEventData eventData)
        {
            if (galleryController != null && !string.IsNullOrEmpty(photoId))
            {
                Logging.Debug($"[PhotoGridItem] Clicked: {photoId}");
                galleryController.OnGridItemClicked(this, photoId);
            }
        }
    }
}