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