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detect mime type #545

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Merged
jamesmoore merged 1 commit into from
Aug 21, 2026
Merged

detect mime type #545

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16 changes: 13 additions & 3 deletions SDMetaUI/Controllers/ImagesController.cs
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Original file line number Diff line number Diff line change
@@ -1,10 +1,13 @@
using SDMetaUI.Services;
using Microsoft.AspNetCore.StaticFiles;
using SDMetaUI.Services;
using System.IO.Abstractions;

namespace SDMetaUI.Controllers
{
public class ImagesController()
{
private static readonly FileExtensionContentTypeProvider ContentTypeProvider = new();

public static IResult GetThumb(
IFileSystem fileSystem,
IThumbnailService thumbnailService,
Expand All @@ -22,7 +25,7 @@ public static IResult GetThumb(
var thumbPath = thumbnailService.GetOrGenerateThumbnail(fileInfo.FullName);
httpResponse.Headers.LastModified = fileInfo.LastWriteTimeUtc.ToString("R");

return Results.File(thumbPath, "image/jpg");
return Results.File(thumbPath, GetContentType(thumbPath));
}
else
{
Expand All @@ -49,7 +52,7 @@ public static IResult GetFull(
{
EnableCaching(httpResponse);
httpResponse.Headers.LastModified = fileSystem.FileInfo.New(physicalPath).LastWriteTimeUtc.ToString("R");
return Results.File(physicalPath, "image/png");
return Results.File(physicalPath, GetContentType(physicalPath));
}
else
{
Expand All @@ -69,6 +72,13 @@ private static string Base32Decode(string base32EncodedData)
return System.Text.Encoding.UTF8.GetString(base32EncodedBytes);
}

private static string GetContentType(string path)
{
return ContentTypeProvider.TryGetContentType(path, out var contentType)
? contentType
: "application/octet-stream";
}

private static void EnableCaching(HttpResponse httpResponse)
{
httpResponse.Headers.CacheControl = "public, max-age=31536000, immutable";
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