Program.cs

using System;
using System.IO;
using System.Threading.Tasks;
using MasteringDotNetRAGandAgents;
using Microsoft.Extensions.Configuration;

class Program
{
    static async Task Main(string[] args)
    {
        var configuration = new ConfigurationBuilder()
            .SetBasePath(Directory.GetCurrentDirectory())
            .AddJsonFile("appsettings.json")
            .Build();

        string apiKey = configuration["OPENAI_API_KEY"].ToString();
        string model = configuration["OPENAI_MODEL"].ToString();
        string orgId = configuration["OPENAI_ORG_ID"].ToString();

        if (string.IsNullOrEmpty(apiKey) || string.IsNullOrEmpty(model))
        {
            Console.WriteLine("Please set the OPENAI_API_KEY, OPENAI_MODEL, and BING_API_KEY in appsettings.json.");
            return;
        }

        await RAG.RunAsync(apiKey, model, orgId);
        await AgentPersona.RunAsync(apiKey, model, orgId);
        await ToolCalling.RunAsync(apiKey, model, orgId);
    }
}