Added the Model Comparison assistant for blind comparisons of two models (#1009)

Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

app/MindWork AI Studio/Assistants/ModelComparison/ModelComparisonPreselection.cs

@@ -0,0 +1,75 @@
+using AIStudio.Settings;
+using AIStudio.Settings.DataModel;
+
+namespace AIStudio.Assistants.ModelComparison;
+
+/// <summary>
+/// Decides which models a new preset or a new comparison series of the Model Comparison assistant starts with.
+/// </summary>
+/// <remarks>
+/// SettingsManager.GetPreselectedProvider cannot decide this: it always falls back to the provider of the whole
+/// app, while the options of this assistant may also preselect no model at all, e.g., because the user wants to
+/// pick both models anew for each comparison.
+/// </remarks>
+public static class ModelComparisonPreselection
+{
+    /// <param name="settingsManager">The settings.</param>
+    extension(SettingsManager settingsManager)
+    {
+        /// <summary>
+        /// Gets the first model of a new preset or comparison series: the preselected model of the options, or the
+        /// provider of the whole app without them.
+        /// </summary>
+        /// <remarks>
+        /// A provider which the organization prohibited, or which misses the confidence requirements of the
+        /// assistant, preselects no model.
+        /// </remarks>
+        public AIStudio.Settings.Provider PreselectedComparisonModel
+        {
+            get
+            {
+                var options = settingsManager.ConfigurationData.ModelComparison;
+                return options.PreselectOptions
+                    ? Resolve(settingsManager, options.PreselectedProvider)
+                    : settingsManager.GetPreselectedProvider(Tools.Components.MODEL_COMPARISON_ASSISTANT);
+            }
+        }
+
+        /// <summary>
+        /// Gets the judge of a new preset or comparison series: the preselected judge model of the options, or no
+        /// model without them. A new preset or comparison series switches its judge on only when this is a model.
+        /// </summary>
+        /// <remarks>
+        /// A provider which the organization prohibited, or which misses the confidence requirements of the
+        /// assistant, preselects no model.
+        /// </remarks>
+        public AIStudio.Settings.Provider PreselectedComparisonJudge
+        {
+            get
+            {
+                var options = settingsManager.ConfigurationData.ModelComparison;
+                return options.PreselectOptions
+                    ? Resolve(settingsManager, options.PreselectedJudgeProvider)
+                    : AIStudio.Settings.Provider.NONE;
+            }
+        }
+    }
+
+    /// <summary>
+    /// Resolves the value of a model option into a provider which the assistant may use.
+    /// </summary>
+    /// <param name="settingsManager">The settings.</param>
+    /// <param name="providerId">The value of the option: DataModelComparison.NO_MODEL, an empty text for the
+    /// provider of the whole app, or the ID of a provider.</param>
+    /// <returns>The provider, or NONE when the option preselects no model or names one the assistant may not use.</returns>
+    private static AIStudio.Settings.Provider Resolve(SettingsManager settingsManager, string providerId)
+    {
+        if (string.Equals(providerId, DataModelComparison.NO_MODEL, StringComparison.OrdinalIgnoreCase))
+            return AIStudio.Settings.Provider.NONE;
+
+        var provider = settingsManager.GetProviderById(string.IsNullOrWhiteSpace(providerId) ? settingsManager.ConfigurationData.App.PreselectedProvider : providerId);
+        return settingsManager.IsProviderConfident(provider, Tools.Components.MODEL_COMPARISON_ASSISTANT)
+            ? provider
+            : AIStudio.Settings.Provider.NONE;
+    }
+}