ChatBot/ChatBot/Services/OllamaClientAdapter.cs

using ChatBot.Services.Interfaces;
using OllamaSharp;
using OllamaSharp.Models;
using OllamaSharp.Models.Chat;

namespace ChatBot.Services
{
    /// <summary>
    /// Adapter for OllamaSharp client to implement IOllamaClient interface
    /// </summary>
    public class OllamaClientAdapter : IOllamaClient
    {
        private readonly OllamaApiClient _client;

        public OllamaClientAdapter(string url)
        {
            if (string.IsNullOrWhiteSpace(url))
                throw new ArgumentException("URL cannot be empty", nameof(url));

            // Configure HttpClient to ignore SSL certificate issues
            var httpClientHandler = new HttpClientHandler
            {
#pragma warning disable S4830 // Enable server certificate validation on this SSL/TLS connection
                ServerCertificateCustomValidationCallback = (
                    message,
                    cert,
                    chain,
                    sslPolicyErrors
                ) => true
#pragma warning restore S4830 // Enable server certificate validation on this SSL/TLS connection
            };

            var httpClient = new HttpClient(httpClientHandler) { BaseAddress = new Uri(url) };
            _client = new OllamaApiClient(httpClient, url);
        }

        public string SelectedModel
        {
            get => _client.SelectedModel;
            set => _client.SelectedModel = value;
        }

        public IAsyncEnumerable<ChatResponseStream?> ChatAsync(ChatRequest request)
        {
            return _client.ChatAsync(request);
        }

        public Task<IEnumerable<Model>> ListLocalModelsAsync()
        {
            return _client.ListLocalModelsAsync();
        }
    }
}