Added tool calling support (#731)

Co-authored-by: krut_ni <nils.kruthoff@dlr.de>
Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

app/MindWork AI Studio/Assistants/BatchProcessing/AssistantBatchProcessing.razor.Prompts.cs

@@ -1,6 +1,7 @@
 using AIStudio.Chat;
 using AIStudio.Provider;
 using AIStudio.Settings;
+using AIStudio.Tools.ToolCallingSystem;
 
 namespace AIStudio.Assistants.BatchProcessing;
 
@@ -86,18 +87,34 @@ public partial class AssistantBatchProcessing
                 """;
     }
 
-    private async Task<string> CallAIAsync(string fileName, string fileContent, CancellationToken token)
+    /// <param name="fileName">The name of the document being processed.</param>
+    /// <param name="fileContent">The content handed to the model.</param>
+    /// <param name="token">The cancellation token.</param>
+    /// <returns>The answer of the model, and which tools it used to get there.</returns>
+    private async Task<(string Answer, string UsedTools)> CallAIAsync(string fileName, string fileContent, CancellationToken token)
     {
+        //
+        // Every file of the batch gets the tools the user picked for the job. The batch builds its
+        // own throwaway thread per file instead of going through the assistant's own thread, so it
+        // has to hand the tools over itself.
+        //
         var chatThread = new ChatThread
         {
             IncludeDateTime = false,
             SelectedProvider = this.ProviderSettings.Id,
             SelectedProfile = Profile.NO_PROFILE.Id,
+            SelectedToolIds = [..this.SelectedToolIds],
             SystemPrompt = this.SystemPrompt,
             WorkspaceId = Guid.Empty,
             ChatId = Guid.NewGuid(),
             Name = this.Title,
             Blocks = [],
+            RuntimeComponent = this.Component,
+            RuntimeSelectedToolIds = this.GetRunnableToolIds(),
+
+            // Always true here, unlike in the assistant base: a batch run takes its tools from the
+            // selected policy or from its own field, never from the tool selection in the footer.
+            RuntimeToolsAreAssistantManaged = true,
         };
 
         var userPrompt = new ContentText
@@ -123,6 +140,32 @@ public partial class AssistantBatchProcessing
         });
 
         await aiText.CreateFromProviderAsync(this.ProviderSettings.CreateProvider(), this.ProviderSettings.Model, userPrompt, chatThread, token);
-        return aiText.Text.RemoveThinkTags().Trim();
+        return (aiText.Text.RemoveThinkTags().Trim(), this.SummarizeToolUsage(aiText));
+    }
+
+    /// <summary>
+    /// Sums up the tool calls of one document for the log.
+    /// </summary>
+    /// <remarks>
+    /// Names each tool once with how often it ran, because a model may search
+    /// several times for the same document. A call that failed or was blocked
+    /// is named with its outcome: for judging an answer it matters whether a
+    /// tool delivered or came back empty-handed.
+    /// </remarks>
+    private string SummarizeToolUsage(ContentText aiText) => string.Join(", ", aiText.ToolInvocations
+        .GroupBy(invocation => (invocation.ToolName, invocation.Status))
+        .OrderBy(group => group.Key.ToolName, StringComparer.OrdinalIgnoreCase)
+        .Select(group => this.FormatToolUsage(group.Key.ToolName, group.Key.Status, group.Count())));
+
+    private string FormatToolUsage(string toolName, ToolInvocationTraceStatus status, int count)
+    {
+        var nameWithCount = count > 1 ? $"{toolName} ({count}x)" : toolName;
+        return status switch
+        {
+            ToolInvocationTraceStatus.ERROR => $"{nameWithCount} [{this.T("failed")}]",
+            ToolInvocationTraceStatus.BLOCKED => $"{nameWithCount} [{this.T("blocked")}]",
+
+            _ => nameWithCount,
+        };
     }
 }