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Moved all extension methods into extension blocks (#1155)

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Thorsten Sommer authored and GitHub committed 2026-11-04 10:46:18 +01:00
1 parent acc7d09fa2
commit c0a75f39ac
138 files changed
+5884 -4954
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app/MindWork AI Studio/Chat/IImageSourceExtensions.cs
+68 -65
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@@ -30,76 +30,79 @@ public static class IImageSourceExtensions
return Math.Min(Math.Min(engineLimit ?? MAX_IMAGE_SIZE_BYTES, providerLimit ?? MAX_IMAGE_SIZE_BYTES), MAX_IMAGE_SIZE_BYTES);
}
/// <summary>
/// Read the image content as a base64 string.
/// </summary>
/// <remarks>
/// This is for the images inside the content of a chat, which go to external data sources and
/// agents as they are. Attached images, which go to a model, take ModelImageService instead: it
/// scales them down and encodes them anew within the limit of the provider.<br/>
/// <br/>
/// The images are directly converted to base64 strings. The maximum
/// size of the image is around 10 MB. If the image is larger, the method
/// returns an empty string.<br/>
/// <br/>
/// Note as well that this method returns just the base64 string without
/// any data URI prefix (like "data:image/png;base64,"). The caller has
/// to take care of that if needed.
/// </remarks>
/// <param name="image">The image source.</param>
/// <param name="token">The cancellation token.</param>
/// <returns>The image content as a base64 string; might be empty.</returns>
public static async Task<(bool success, string base64Content)> TryAsBase64(this IImageSource image, CancellationToken token = default)
extension(IImageSource image)
{
switch (image.SourceType)
/// <summary>
/// Read the image content as a base64 string.
/// </summary>
/// <remarks>
/// This is for the images inside the content of a chat, which go to external data sources and
/// agents as they are. Attached images, which go to a model, take ModelImageService instead: it
/// scales them down and encodes them anew within the limit of the provider.<br/>
/// <br/>
/// The images are directly converted to base64 strings. The maximum
/// size of the image is around 10 MB. If the image is larger, the method
/// returns an empty string.<br/>
/// <br/>
/// Note as well that this method returns just the base64 string without
/// any data URI prefix (like "data:image/png;base64,"). The caller has
/// to take care of that if needed.
/// </remarks>
/// <param name="token">The cancellation token.</param>
/// <returns>The image content as a base64 string; might be empty.</returns>
public async Task<(bool success, string base64Content)> TryAsBase64(CancellationToken token = default)
{
case ContentImageSource.BASE64:
return (success: true, image.Source);
case ContentImageSource.URL:
switch (image.SourceType)
{
using var httpClient = ExternalHttpClientTimeout.CreateHttpClient(ExternalHttpTrustPolicy.ALLOW_CUSTOM_ROOTS_WHEN_HOST_WHITELISTED);
using var timeoutTokenSource = ExternalHttpClientTimeout.CreateTimeoutTokenSource(token);
var timeoutToken = timeoutTokenSource.Token;
using var response = await httpClient.GetAsync(image.Source, HttpCompletionOption.ResponseHeadersRead, timeoutToken);
if(response.IsSuccessStatusCode)
{
// Read the length of the content:
var lengthBytes = response.Content.Headers.ContentLength;
if(lengthBytes > MAX_IMAGE_SIZE_BYTES)
{
await MessageBus.INSTANCE.SendError(new(Icons.Material.Filled.ImageNotSupported, TB("The image at the URL is too large (>10 MB). Skipping the image.")));
return (success: false, string.Empty);
}
var bytes = await response.Content.ReadAsByteArrayAsync(timeoutToken);
return (success: true, Convert.ToBase64String(bytes));
}
await MessageBus.INSTANCE.SendError(new(Icons.Material.Filled.ImageNotSupported, TB("Failed to download the image from the URL. Skipping the image.")));
return (success: false, string.Empty);
}
case ContentImageSource.LOCAL_PATH:
if(File.Exists(image.Source))
{
// Read the content length:
var length = new FileInfo(image.Source).Length;
if(length > MAX_IMAGE_SIZE_BYTES)
{
await MessageBus.INSTANCE.SendError(new(Icons.Material.Filled.ImageNotSupported, TB("The local image file is too large (>10 MB). Skipping the image.")));
return (success: false, string.Empty);
}
var bytes = await File.ReadAllBytesAsync(image.Source, token);
return (success: true, Convert.ToBase64String(bytes));
}
await MessageBus.INSTANCE.SendError(new(Icons.Material.Filled.ImageNotSupported, TB("The local image file does not exist. Skipping the image.")));
return (success: false, string.Empty);
case ContentImageSource.BASE64:
return (success: true, image.Source);
default:
return (success: false, string.Empty);
case ContentImageSource.URL:
{
using var httpClient = ExternalHttpClientTimeout.CreateHttpClient(ExternalHttpTrustPolicy.ALLOW_CUSTOM_ROOTS_WHEN_HOST_WHITELISTED);
using var timeoutTokenSource = ExternalHttpClientTimeout.CreateTimeoutTokenSource(token);
var timeoutToken = timeoutTokenSource.Token;
using var response = await httpClient.GetAsync(image.Source, HttpCompletionOption.ResponseHeadersRead, timeoutToken);
if(response.IsSuccessStatusCode)
{
// Read the length of the content:
var lengthBytes = response.Content.Headers.ContentLength;
if(lengthBytes > MAX_IMAGE_SIZE_BYTES)
{
await MessageBus.INSTANCE.SendError(new(Icons.Material.Filled.ImageNotSupported, TB("The image at the URL is too large (>10 MB). Skipping the image.")));
return (success: false, string.Empty);
}
var bytes = await response.Content.ReadAsByteArrayAsync(timeoutToken);
return (success: true, Convert.ToBase64String(bytes));
}
await MessageBus.INSTANCE.SendError(new(Icons.Material.Filled.ImageNotSupported, TB("Failed to download the image from the URL. Skipping the image.")));
return (success: false, string.Empty);
}
case ContentImageSource.LOCAL_PATH:
if(File.Exists(image.Source))
{
// Read the content length:
var length = new FileInfo(image.Source).Length;
if(length > MAX_IMAGE_SIZE_BYTES)
{
await MessageBus.INSTANCE.SendError(new(Icons.Material.Filled.ImageNotSupported, TB("The local image file is too large (>10 MB). Skipping the image.")));
return (success: false, string.Empty);
}
var bytes = await File.ReadAllBytesAsync(image.Source, token);
return (success: true, Convert.ToBase64String(bytes));
}
await MessageBus.INSTANCE.SendError(new(Icons.Material.Filled.ImageNotSupported, TB("The local image file does not exist. Skipping the image.")));
return (success: false, string.Empty);
default:
return (success: false, string.Empty);
}
}
}
}