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/ModelComparisonProviderCheck.cs

@@ -0,0 +1,49 @@
+using AIStudio.Provider;
+using AIStudio.Settings;
+
+namespace AIStudio.Assistants.ModelComparison;
+
+/// <summary>
+/// Checks whether the Model Comparison assistant may use a provider, for both of its modes.
+/// </summary>
+public static class ModelComparisonProviderCheck
+{
+    private static string TA(string fallbackEN) => Tools.PluginSystem.I18N.I.TA(fallbackEN, typeof(ModelComparisonProviderCheck).Namespace, nameof(ModelComparisonProviderCheck));
+
+    /// <summary>
+    /// Tells why the assistant may not use a provider which was selected, e.g., when it was saved in a preset or a
+    /// comparison series: an organization may prohibit a provider or raise the confidence requirements at any time.
+    /// </summary>
+    /// <param name="settingsManager">The settings.</param>
+    /// <param name="provider">The provider.</param>
+    /// <returns>The reason, or null when the assistant may use the provider.</returns>
+    public static string? IssueOf(SettingsManager settingsManager, AIStudio.Settings.Provider provider)
+    {
+        if (provider.UsedLLMProvider is LLMProviders.NONE)
+            return TA("Please select a provider.");
+
+        if (settingsManager.IsProviderProhibited(provider.UsedLLMProvider))
+            return TA("The use of this provider has been prohibited by your organization. Please select a different provider.");
+
+        if (!settingsManager.IsProviderConfident(provider, Tools.Components.MODEL_COMPARISON_ASSISTANT))
+            return TA("This provider does not meet the confidence requirements of this assistant. Please choose another one.");
+
+        return null;
+    }
+
+    /// <summary>
+    /// Gets the provider of a model which a comparison series keeps, as long as it still uses the same model as when
+    /// the series began.
+    /// </summary>
+    /// <param name="settingsManager">The settings.</param>
+    /// <param name="providerId">The ID of the provider.</param>
+    /// <param name="identity">The model as it was when the series began.</param>
+    /// <returns>The provider, or NONE when it was deleted or uses another model now.</returns>
+    public static AIStudio.Settings.Provider ProviderAsItWas(SettingsManager settingsManager, string providerId, ModelComparisonModelIdentity identity)
+    {
+        var provider = settingsManager.GetProviderById(providerId);
+        return provider.UsedLLMProvider is not LLMProviders.NONE && ModelComparisonModelIdentity.Of(provider).IsSameModelAs(identity)
+            ? provider
+            : AIStudio.Settings.Provider.NONE;
+    }
+}