Build your first AI Agent using Microsoft Agent Framework

var endpoint = builder.Configuration["AzureOpenAI:Endpoint"] ?? 
    throw new InvalidOperationException("AzureOpenAI:Endpoint is not configured");
var deployment = builder.Configuration["AzureOpenAI:Deployment"] ?? 
    throw new InvalidOperationException("AzureOpenAI:Deployment is not configured");
var apiKey = builder.Configuration["AzureOpenAI:ApiKey"] ?? 
    throw new InvalidOperationException("AzureOpenAI:ApiKey is not configured");

var instructions = $"You're a research assistant, you help to generate information about the company. Provide detailed information. Use the tools available to you to gather information. Provide detailed information such as founding date, founders, number of employees, revenue, headquarters location, and recent news in JSON format.";

builder.Services.AddHttpClient("Google-Search", client =>
{
    client.BaseAddress = new Uri("https://www.googleapis.com/customsearch/");
});

builder.Services.AddSingleton<SearchTools>();
builder.Services.AddSingleton((sp) =>
{
    var tools = sp.GetService<SearchTools>() ?? 
        throw new InvalidOperationException("SearchTools service is not available");

    var agent = new ChatClientBuilder(new AzureOpenAIClient(new Uri(endpoint), new ApiKeyCredential(apiKey))
        .GetChatClient(deployment)
        .AsIChatClient())
        .BuildAIAgent(instructions: instructions, "ResearchAgent", tools: [AIFunctionFactory.Create(tools.GetCompanyInfo)]);
    return agent;
});

public sealed class SearchTools
{
    private readonly IHttpClientFactory _httpClientFactory;
    private readonly IConfiguration _configuration;
    public SearchTools(IHttpClientFactory httpClientFactory, IConfiguration configuration)
    {
        _httpClientFactory = httpClientFactory;
        _configuration = configuration;
    }
    [Description("Get information about a company by its name.")]
    public async Task<string> GetCompanyInfo(
        [Description("The name of the company to retrieve information for.")] string name,
        CancellationToken cancellationToken)
    {
        var googleCX = _configuration["Google:CX"];
        var googleAPIKey = _configuration["Google:ApiKey"];
        var url = $"v1?key={googleAPIKey}&cx={googleCX}&q={Uri.EscapeDataString(name)}&num=10&page=1";
        using var httpClient = _httpClientFactory.CreateClient("Google-Search");
        var response = await httpClient.GetAsync(url, cancellationToken);
        response.EnsureSuccessStatusCode();
        var json = await response.Content.ReadAsStringAsync(cancellationToken);
        return json;
    }
}

app.MapGet("/generate", async ([FromQuery] string company, [FromServices] ChatClientAgent agent,
    CancellationToken cancellationToken) =>
{
    var response = await agent.RunAsync(company, cancellationToken: cancellationToken);
    var jsonResponse = JsonSerializer.Deserialize<object>(response.Text);
    return Results.Ok(jsonResponse);
});