Added the guided chat to the BeyondFacts Lab (#1177)

app/MindWork AI Studio/Assistants/BeyondFactsLab/BflThreadFactory.cs

@@ -0,0 +1,54 @@
+using AIStudio.Chat;
+using AIStudio.Settings;
+
+namespace AIStudio.Assistants.BeyondFactsLab;
+
+/// <summary>
+/// Creates the chats of the BeyondFacts Lab and readies them for a request.
+/// </summary>
+/// <remarks>
+/// A chat of the lab has no profile, no chat template, and no data sources: its context is the prompt of the lab,
+/// the guide, and the details of the preparation. The lab manages its tools itself; so far, it offers none.
+/// </remarks>
+public static class BflThreadFactory
+{
+    /// <summary>
+    /// Creates the chat of a step, without any messages.
+    /// </summary>
+    /// <param name="location">The step of the preparation the chat belongs to.</param>
+    /// <returns>The chat.</returns>
+    public static ChatThread Create(BflThreadLocation location) => new()
+    {
+        ChatId = location.ChatId,
+        WorkspaceId = Guid.Empty,
+        Name = location.Step.FolderName,
+        IncludeDateTime = true,
+        SelectedProfile = Profile.NO_PROFILE.Id,
+        SelectedChatTemplate = ChatTemplate.NO_CHAT_TEMPLATE.Id,
+        SelectedToolIds = [],
+        Blocks = []
+    };
+
+    /// <summary>
+    /// Readies a chat for the next request: its prompt and provider, and what a chat does not store.
+    /// </summary>
+    /// <remarks>
+    /// The system prompt is put together anew for every request, so a changed detail or form of address counts from
+    /// the next answer on.
+    /// </remarks>
+    /// <param name="thread">The chat.</param>
+    /// <param name="provider">The provider which answers.</param>
+    /// <param name="systemPrompt">The system prompt of the step, see BflPromptComposer.</param>
+    public static void PrepareForRequest(ChatThread thread, AIStudio.Settings.Provider provider, string systemPrompt)
+    {
+        thread.SystemPrompt = systemPrompt;
+        thread.SelectedProvider = provider.Id;
+        thread.SelectedProfile = Profile.NO_PROFILE.Id;
+        thread.SelectedChatTemplate = ChatTemplate.NO_CHAT_TEMPLATE.Id;
+        thread.DataSourceOptions.DisableDataSources = true;
+        thread.RuntimeComponent = Tools.Components.BEYOND_FACTS_LAB_ASSISTANT;
+        thread.RuntimeAssistantName = string.Empty;
+        thread.RuntimeSelectedToolIds = [];
+        thread.RuntimeToolsAreAssistantManaged = true;
+    }
+}