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integrate Gemini SDK for .NET using Microsoft.Extension.AI #2

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6 changes: 4 additions & 2 deletions README.md
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# Chat with YouTube videos using .NET and C#

This is a sample demonstrating how to ingest a transcript for a YouTube video and ask questions about it using OpenAI, or local AI models, and .NET.
This is a sample demonstrating how to ingest a transcript for a YouTube video and ask questions about it using either OpenAI, Gemini, or local AI models, and .NET.

## Running the sample
To run the sample:
1. Clone the app locally
2. Get an API key for OpenAI and set a local environment variable named OPENAI_API_KEY with that key
3. Run the project using your favorite editor, or calling `dotnet run` from a Terminal in the root of your project directory
3. Alternatively, get an API key for [Gemini](https://aistudio.google.com/app/apikey) and set a local environment variable named GOOGLE_API_KEY with that key
4. Run the project using your favorite editor, or calling `dotnet run` from a Terminal in the root of your project directory

You could also run this sample using a local AI model, downloaded using [Ollama](https://ollama.com):
1. Install [Ollama](https://ollama.com)
Expand All @@ -20,5 +21,6 @@ This sample is built using the following technology:
* [.NET 9](https://dotnet.microsoft.com/en-us/download/dotnet/9.0)
* [Microsoft.Extensions.AI](https://devblogs.microsoft.com/dotnet/introducing-microsoft-extensions-ai-preview/)
* The [OpenAI library for .NET](https://www.nuget.org/packages/OpenAI)
* The [Gemini SDK for .NET using Microsoft.Extension.AI](https://www.nuget.org/packages/Mscc.GenerativeAI.Microsoft/2.0.1-preview)
* [OllamaSharp](https://www.nuget.org/packages/OllamaSharp)
* A [YouTubeTranscriptAPI](https://www.nuget.org/packages/Lofcz.Forks.YoutubeTranscriptApi) package, which is a .NET implementation of the Python [youtube-transcript-api](https://github.com/jdepoix/youtube-transcript-api) module
21 changes: 19 additions & 2 deletions YouTubeChat/Program.cs
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using Microsoft.Extensions.AI;
using Microsoft.Extensions.VectorData;
using Microsoft.SemanticKernel.Connectors.InMemory;
using Mscc.GenerativeAI.Microsoft;
using OllamaSharp;
using OpenAI;
using YoutubeTranscriptApi;

AppContext.SetSwitch("System.Net.SocketsHttpHandler.Http3Support", false);

var usingOpenAI = true;
var usingGemini = true;
IChatClient chatClient = null;
IEmbeddingGenerator<string, Embedding<float>> embeddingGenerator = null;

var apiKey = Environment.GetEnvironmentVariable("OPENAI_API_KEY");
if (apiKey is null) usingOpenAI = false;

apiKey = Environment.GetEnvironmentVariable("GOOGLE_API_KEY");
if (apiKey is null) usingGemini = false;

// Setup the connection to OpenAI
if (usingOpenAI)
{
OpenAIClient client = new OpenAIClient(Environment.GetEnvironmentVariable("OPENAI_API_KEY"));
OpenAIClient client = new OpenAIClient(apiKey);
chatClient = client.AsChatClient("gpt-4o-mini");
embeddingGenerator = client.AsEmbeddingGenerator("text-embedding-3-small");
}
// Setup the connection to Gemini
else if (usingGemini)
{
chatClient = new GeminiChatClient(apiKey,
Environment.GetEnvironmentVariable("GOOGLE_AI_MODEL") ?? "gemini-1.5-flash-latest");
embeddingGenerator = new GeminiEmbeddingGenerator(apiKey, "text-embedding-004");
}
else
{
var ollamaEndpoint = "http://localhost:11434/";
Expand Down Expand Up @@ -82,6 +99,7 @@

do
{
Console.WriteLine("Ask a question, or type 'exit' to quit.");
string prompt = Console.ReadLine();

if (prompt.Equals("exit", StringComparison.InvariantCultureIgnoreCase))
Expand Down Expand Up @@ -122,7 +140,6 @@ You should also provide links to documentation and other resources that can help

Question: {prompt}";

Console.WriteLine("Ask a question, or type 'exit' to quit.");
Console.ForegroundColor = ConsoleColor.Green; // Set console text color to green
IAsyncEnumerable<StreamingChatCompletionUpdate> responseChunk = chatClient.CompleteStreamingAsync(systemPrompt);
await foreach (var update in responseChunk)
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13 changes: 7 additions & 6 deletions YouTubeChat/YouTubeChat.csproj
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<ItemGroup>
<PackageReference Include="Lofcz.Forks.YoutubeTranscriptApi" Version="0.4.2" />
<PackageReference Include="Microsoft.Extensions.AI" Version="9.0.0-preview.9.24556.5" />
<PackageReference Include="Microsoft.Extensions.AI.OpenAI" Version="9.0.0-preview.9.24556.5" />
<PackageReference Include="Microsoft.Extensions.AI" Version="9.0.1-preview.1.24570.5" />
<PackageReference Include="Microsoft.Extensions.AI.OpenAI" Version="9.0.1-preview.1.24570.5" />
<PackageReference Include="Microsoft.ML.Tokenizers" Version="1.0.0" />
<PackageReference Include="Microsoft.SemanticKernel.Core" Version="1.29.0" />
<PackageReference Include="Microsoft.SemanticKernel.Connectors.InMemory" Version="1.26.0-preview" />
<PackageReference Include="OllamaSharp" Version="4.0.3" />
<PackageReference Include="OpenAI" Version="2.0.0" />
<PackageReference Include="Microsoft.SemanticKernel.Core" Version="1.32.0" />
<PackageReference Include="Microsoft.SemanticKernel.Connectors.InMemory" Version="1.32.0-preview" />
<PackageReference Include="OllamaSharp" Version="4.0.11" />
<PackageReference Include="OpenAI" Version="2.1.0" />
<PackageReference Include="Mscc.GenerativeAI.Microsoft" Version="2.0.1-preview" />
</ItemGroup>

</Project>
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