OpenAILanguageModelService.cs

using static LangChain.Chains.Chain;
using LangChain.Providers.OpenAI;

namespace XX.Backend.Services
{
    public class OpenAILanguageModelService : ILanguageModelService
    {
        private readonly ILogger<OpenAILanguageModelService> _logger;
        private readonly IConfiguration _configuration;

        public OpenAILanguageModelService(IConfiguration configuration, ILogger<OpenAILanguageModelService> logger)
        {
            _configuration = configuration;
            _logger = logger;
        }

        public async Task<string> Run(string prompt)
        {
            try
            {
                _logger.LogInformation("Request received with prompt: {Prompt}", prompt);

                var model = new OpenAiChatModel(_configuration["OpenAI:ApiKey"], _configuration["OpenAI:ModelId"]);

                var chain = Set(prompt) | LLM(model);

                var response = await chain.Run();

                return response.ToString();
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "Error running the language model with prompt: {Prompt}", prompt);
                return "An error occurred while processing your request.";
            }
        }
    }
}