SocialPub/PrivaPub/Models/Post/LocalEmoji.cs

using MongoDB.Entities;

namespace PrivaPub.Models.Post
{
	// One of this server's own custom emoji (completion program R7), added by an administrator
	// (/clientapi/admin/emoji, EmojiAdminController). Its shortcode is its name everywhere: `:shortcode:` in a post, and
	// its federated id (/grimaces/{shortcode}, Domain/Content/LocalEmojis.Path), which is why it is never renamed. Its picture
	// is a MediaAttachment nobody owns, held by ServerUse "emoji:<shortcode>" while the emoji exists. Deleted, the row stays
	// (DeletedAt) so its id answers 410; adding the same shortcode again brings the row back with a new picture.
	public class LocalEmoji : Entity
	{
		public string Shortcode { get; set; }//as written, [a-zA-Z0-9_]{2,64} (Mastodon's rule); matched exactly in texts
		public string Key { get; set; }//the shortcode in lower case: unique, so `Blob` and `blob` are never two emoji
		public string Category { get; set; }
		public bool VisibleInPicker { get; set; } = true;
		public bool Disabled { get; set; } = false;//kept, but offered nowhere and taken into no new post
		public string MediaId { get; set; }//its picture's MediaAttachment (ServerUse "emoji:<shortcode>")
		public string Url { get; set; }//the picture: a PNG, or an animated GIF
		public string StaticUrl { get; set; }//a still PNG of it (the first frame of a GIF; the picture itself otherwise)
		public string ContentType { get; set; }//image/png or image/gif
		public int? Width { get; set; }
		public int? Height { get; set; }
		public long Size { get; set; }
		public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
		public DateTime UpdatedAt { get; set; } = DateTime.UtcNow;//any change
		public DateTime ImageUpdatedAt { get; set; } = DateTime.UtcNow;//its picture's: the Emoji's `updated`, which tells peers to fetch it again
		public DateTime? DeletedAt { get; set; }
	}
}