You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
DiscordChatExporter/DiscordChatExporter.Core/Discord/Data/Emoji.cs

72 lines
2.3 KiB

using System;
using System.Linq;
using System.Text.Json;
using DiscordChatExporter.Core.Utils;
using DiscordChatExporter.Core.Utils.Extensions;
using JsonExtensions.Reading;
namespace DiscordChatExporter.Core.Discord.Data;
// https://discord.com/developers/docs/resources/emoji#emoji-object
public partial record Emoji(
// Only present on custom emoji
Snowflake? Id,
// Name of custom emoji (e.g. LUL) or actual representation of standard emoji (e.g. 🙂)
string Name,
bool IsAnimated,
string ImageUrl)
{
// Name of custom emoji (e.g. LUL) or name of standard emoji (e.g. slight_smile)
public string Code => Id is not null
? Name
: EmojiIndex.TryGetCode(Name) ?? Name;
}
public partial record Emoji
{
private static string GetTwemojiName(string name) => string.Join("-",
name
.GetRunes()
// Variant selector rune is skipped in Twemoji names
.Where(r => r.Value != 0xfe0f)
.Select(r => r.Value.ToString("x"))
);
private static string GetImageUrl(Snowflake id, bool isAnimated) => isAnimated
? $"https://cdn.discordapp.com/emojis/{id}.gif"
: $"https://cdn.discordapp.com/emojis/{id}.png";
private static string GetImageUrl(string name) =>
$"https://twemoji.maxcdn.com/2/svg/{GetTwemojiName(name)}.svg";
public static string GetImageUrl(Snowflake? id, string? name, bool isAnimated)
{
// Custom emoji
if (id is not null)
return GetImageUrl(id.Value, isAnimated);
// Standard emoji
if (!string.IsNullOrWhiteSpace(name))
return GetImageUrl(name);
// Either ID or name should be set
throw new ApplicationException("Emoji has neither ID nor name set.");
}
public static Emoji Parse(JsonElement json)
{
var id = json.GetPropertyOrNull("id")?.GetNonWhiteSpaceStringOrNull()?.Pipe(Snowflake.Parse);
var name = json.GetPropertyOrNull("name")?.GetNonWhiteSpaceStringOrNull();
var isAnimated = json.GetPropertyOrNull("animated")?.GetBooleanOrNull() ?? false;
var imageUrl = GetImageUrl(id, name, isAnimated);
return new Emoji(
id,
// Name may be missing if it's an emoji inside a reaction
name ?? "<unknown emoji>",
isAnimated,
imageUrl
);
}
}