Added local RAG (#756)

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

app/MindWork AI Studio/Settings/DataSourceSecurityTrustExtensions.cs

@@ -1,4 +1,5 @@
 using AIStudio.Provider;
+using AIStudio.Settings.DataModel;
 
 namespace AIStudio.Settings;
 
@@ -36,6 +37,88 @@ public static class DataSourceSecurityTrustExtensions
         return provider.Provider is LLMProviders.SELF_HOSTED || IsTrustedProviderId(provider.ConfiguredProviderId, settingsManager);
     }
 
+    public static ConfidenceLevel GetConfidenceLevel(this Provider provider, SettingsManager settingsManager)
+    {
+        if (provider == Provider.NONE)
+            return ConfidenceLevel.NONE;
+
+        return provider.UsedLLMProvider.GetConfidence(settingsManager).Level;
+    }
+
+    public static ConfidenceLevel GetConfidenceLevel(this EmbeddingProvider provider, SettingsManager settingsManager)
+    {
+        if (provider == EmbeddingProvider.NONE)
+            return ConfidenceLevel.NONE;
+
+        return provider.UsedLLMProvider.GetConfidence(settingsManager).Level;
+    }
+
+    public static ConfidenceLevel GetConfidenceLevel(this IProvider provider, SettingsManager settingsManager)
+    {
+        if (provider is NoProvider)
+            return ConfidenceLevel.NONE;
+
+        return provider.Provider.GetConfidence(settingsManager).Level;
+    }
+
+    public static bool AllowsDataSourceAccess(this Provider provider, SettingsManager settingsManager, DataSourceSecurity dataSourceSecurity, ConfidenceLevel requiredConfidenceLevel)
+    {
+        return provider.AllowsDataSourceSecurity(dataSourceSecurity, settingsManager)
+            && provider.GetConfidenceLevel(settingsManager).AllowsDataSourceConfidenceLevel(requiredConfidenceLevel);
+    }
+
+    public static bool AllowsDataSourceAccess(this IProvider provider, SettingsManager settingsManager, DataSourceSecurity dataSourceSecurity, ConfidenceLevel requiredConfidenceLevel)
+    {
+        return provider.AllowsDataSourceSecurity(dataSourceSecurity, settingsManager)
+            && provider.GetConfidenceLevel(settingsManager).AllowsDataSourceConfidenceLevel(requiredConfidenceLevel);
+    }
+
+    public static bool AllowsDataSourceSecurity(this Provider provider, DataSourceSecurity dataSourceSecurity, SettingsManager settingsManager)
+        => provider.IsTrustedForDataSourceSecurityChecks(settingsManager).AllowsDataSourceSecurity(dataSourceSecurity);
+
+    public static bool AllowsDataSourceSecurity(this IProvider provider, DataSourceSecurity dataSourceSecurity, SettingsManager settingsManager)
+        => provider.IsTrustedForDataSourceSecurityChecks(settingsManager).AllowsDataSourceSecurity(dataSourceSecurity);
+
+    public static bool AllowsDataSourceSecurity(this bool usingTrustedProvider, DataSourceSecurity dataSourceSecurity) => dataSourceSecurity switch
+    {
+        DataSourceSecurity.ALLOW_ANY => true,
+        DataSourceSecurity.SELF_HOSTED => usingTrustedProvider,
+        _ => false,
+    };
+
+    public static bool AllowsDataSourceConfidenceLevel(this ConfidenceLevel providerConfidenceLevel, ConfidenceLevel requiredConfidenceLevel)
+    {
+        if (requiredConfidenceLevel is ConfidenceLevel.NONE)
+            return true;
+
+        return providerConfidenceLevel >= requiredConfidenceLevel;
+    }
+
+    public static ConfidenceLevel GetRequiredConfidenceLevel(this IEnumerable<IDataSource> dataSources)
+    {
+        var requiredConfidenceLevel = ConfidenceLevel.NONE;
+        foreach (var dataSource in dataSources.OfType<IInternalDataSource>())
+            if (dataSource.ConfidenceLevel > requiredConfidenceLevel)
+                requiredConfidenceLevel = dataSource.ConfidenceLevel;
+
+        return requiredConfidenceLevel;
+    }
+
+    public static DataSourceSecurity GetRequiredSecurityPolicy(this IEnumerable<IDataSource> dataSources)
+    {
+        var requiredSecurityPolicy = DataSourceSecurity.ALLOW_ANY;
+        foreach (var dataSource in dataSources.OfType<IExternalDataSource>())
+        {
+            if (dataSource.SecurityPolicy is DataSourceSecurity.NOT_SPECIFIED)
+                return DataSourceSecurity.NOT_SPECIFIED;
+
+            if (dataSource.SecurityPolicy is DataSourceSecurity.SELF_HOSTED)
+                requiredSecurityPolicy = DataSourceSecurity.SELF_HOSTED;
+        }
+
+        return requiredSecurityPolicy;
+    }
+
     public static bool IsTrustedByConfiguration(this Provider provider, SettingsManager settingsManager) => IsTrustedProviderId(provider.Id, settingsManager);
 
     public static bool IsTrustedByConfiguration(this EmbeddingProvider provider, SettingsManager settingsManager) => IsTrustedProviderId(provider.Id, settingsManager);