import 'package:eatvio_app/core/app_config.dart';
import 'package:eatvio_app/core/locator_service.dart';
import 'package:eatvio_app/features/feed/models/diets_pagination_model.dart';
import 'package:eatvio_app/features/feed/models/feed_blog_post_model.dart';
import 'package:eatvio_app/features/feed/models/post_feed_pagination_model.dart';

class PostFeedMapper {
  static FeedBlogPostModel fromPostFeedItem(PostFeedItemModel item, {int? currentUserId}) {
    return FeedBlogPostModel(
      id: item.postId,
      state: item.postState,
      image: resolveMediaUrl(item.postImageUrl),
      description: item.postTextMd ?? item.postShortDescription ?? '',
      author: Author(
        authorSlug: item.postAuthorDetails?.slug ?? '',
        authorName: item.postAuthorName,
        authorProfileIcon: resolveMediaUrl(item.postAuthorImageUrl),
        authorIsMe: currentUserId != null && item.postAuthorId == currentUserId,
        isEntitySubscribedByMe: item.isEntitySubscribedByMe,
      ),
      videoUrl: '',
      createdAt: item.postCreatedAt,
      updatedAt: item.updatedAt,
      title: item.postTitle,
      totalLikes: item.postLikesCount,
      totalViews: item.postViewsCount,
      totalComments: item.postCommentsCount,
      wasLikedByMe: item.postIsLikedByUser,
      images: item.images.where((image) => hasRenderableImage(image.url)).toList(),
      videoEmbedUrl: item.videoEmbedUrl,
      videoUrlThumb: item.videoUrlThumb,
    );
  }

  static String resolveMediaUrl(String? url) {
    if (url == null || url.isEmpty || isPlaceholderMediaUrl(url)) {
      return '';
    }
    if (url.startsWith('http://') || url.startsWith('https://')) {
      return url;
    }
    if (url.startsWith('/')) {
      return '${sl<AppConfig>().baseUrl}$url';
    }
    return '${sl<AppConfig>().baseUrl}/storage/$url';
  }

  static bool isPlaceholderMediaUrl(String url) {
    return url.toLowerCase().contains('element-image-placeholder');
  }

  static bool hasRenderableImage(String? url) {
    if (url == null || url.trim().isEmpty) {
      return false;
    }
    return !isPlaceholderMediaUrl(url);
  }

  static bool hasVisibleMedia({
    required String image,
    required List<FeedGalleryImage> images,
    String? videoEmbedUrl,
  }) {
    if (videoEmbedUrl != null && videoEmbedUrl.trim().isNotEmpty) {
      return true;
    }
    if (hasRenderableImage(image)) {
      return true;
    }
    return images.any((image) => hasRenderableImage(image.url));
  }
}