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microsoft--semantic-kernel/dotnet/samples/Demos/AIModelRouter/CustomRouter.cs
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C#

// Copyright (c) Microsoft. All rights reserved.
#pragma warning disable SKEXP0001
#pragma warning disable SKEXP0010
#pragma warning disable CA2249 // Consider using 'string.Contains' instead of 'string.IndexOf'
namespace AIModelRouter;
/// <summary>
/// This class is for demonstration purposes only.
/// In a real-world scenario, you would use a more sophisticated routing mechanism, such as another local model for
/// deciding which service to use based on the user's input or any other criteria.
/// </summary>
internal sealed class CustomRouter()
{
/// <summary>
/// Returns the best service id to use based on the user's input.
/// This demonstration uses a simple logic where your input is checked for specific keywords as a deciding factor,
/// if no keyword is found it defaults to the first service in the list.
/// </summary>
/// <param name="lookupPrompt">User's input prompt</param>
/// <param name="serviceIds">List of service ids to choose from in order of importance, defaulting to the first</param>
/// <returns>Service id.</returns>
internal string GetService(string lookupPrompt, List<string> serviceIds)
{
// The order matters, if the keyword is not found, the first one is used.
foreach (var serviceId in serviceIds)
{
if (Contains(lookupPrompt, serviceId))
{
return serviceId;
}
}
return serviceIds[0];
}
// Ensure compatibility with both netstandard2.0 and net8.0 by using IndexOf instead of Contains
private static bool Contains(string prompt, string pattern)
=> prompt.IndexOf(pattern, StringComparison.CurrentCultureIgnoreCase) >= 0;
}