51 lines
No EOL
2 KiB
C#
51 lines
No EOL
2 KiB
C#
using Foxnouns.Backend.Database;
|
|
using Foxnouns.Backend.Jobs;
|
|
using Foxnouns.Backend.Services;
|
|
using Foxnouns.Backend.Utils;
|
|
using SixLabors.ImageSharp;
|
|
using SixLabors.ImageSharp.Formats.Webp;
|
|
using SixLabors.ImageSharp.Processing;
|
|
using SixLabors.ImageSharp.Processing.Processors.Transforms;
|
|
|
|
namespace Foxnouns.Backend.Extensions;
|
|
|
|
public static class AvatarObjectExtensions
|
|
{
|
|
private static readonly string[] ValidContentTypes = ["image/png", "image/webp", "image/jpeg"];
|
|
|
|
public static async Task
|
|
DeleteMemberAvatarAsync(this ObjectStorageService objectStorage, Snowflake id, string hash) =>
|
|
await objectStorage.RemoveObjectAsync(MemberAvatarUpdateInvocable.Path(id, hash));
|
|
|
|
public static async Task
|
|
DeleteUserAvatarAsync(this ObjectStorageService objectStorage, Snowflake id, string hash) =>
|
|
await objectStorage.RemoveObjectAsync(UserAvatarUpdateInvocable.Path(id, hash));
|
|
|
|
public static async Task<Stream> ConvertBase64UriToAvatar(this string uri)
|
|
{
|
|
if (!uri.StartsWith("data:image/"))
|
|
throw new ArgumentException("Not a data URI", nameof(uri));
|
|
|
|
var split = uri.Remove(0, "data:".Length).Split(";base64,");
|
|
var contentType = split[0];
|
|
var encoded = split[1];
|
|
if (!ValidContentTypes.Contains(contentType))
|
|
throw new ArgumentException("Invalid content type for image", nameof(uri));
|
|
|
|
if (!AuthUtils.TryFromBase64String(encoded, out var rawImage))
|
|
throw new ArgumentException("Invalid base64 string", nameof(uri));
|
|
|
|
var image = Image.Load(rawImage);
|
|
|
|
var processor = new ResizeProcessor(
|
|
new ResizeOptions { Size = new Size(512), Mode = ResizeMode.Crop, Position = AnchorPositionMode.Center },
|
|
image.Size
|
|
);
|
|
|
|
image.Mutate(x => x.ApplyProcessor(processor));
|
|
|
|
var stream = new MemoryStream(64 * 1024);
|
|
await image.SaveAsync(stream, new WebpEncoder { Quality = 95, NearLossless = false });
|
|
return stream;
|
|
}
|
|
} |