using Newtonsoft.Json;
using System;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;

namespace Chtn.CSharp.SDK.Core
{
    public class ApiClient
    {
        private readonly HttpClient _httpClient;
        private readonly string _baseUrl;

        public ApiClient(string baseUrl)
        {
            _baseUrl = baseUrl.EndsWith("/") ? baseUrl : baseUrl + "/";
            _httpClient = new HttpClient();
        }

        public async Task<TResponse> PostAsync<TRequest, TResponse>(string endpoint, TRequest data)
        {
            var json = JsonConvert.SerializeObject(data);
            var content = new StringContent(json, Encoding.UTF8, "application/json");

            var response = await _httpClient.PostAsync(_baseUrl + endpoint, content);
            var responseJson = await response.Content.ReadAsStringAsync();

            if (!response.IsSuccessStatusCode)
            {
                throw new Exception($"API Hiba ({response.StatusCode}): {responseJson}");
            }

            return JsonConvert.DeserializeObject<TResponse>(responseJson);
        }
        public async Task<TResponse> GetAsync<TResponse>(string endpoint)
        {
            var response = await _httpClient.GetAsync(endpoint);
            response.EnsureSuccessStatusCode();
            var content = await response.Content.ReadAsStringAsync();
            return JsonConvert.DeserializeObject<TResponse>(content);
        }
        public async Task<TResponse> PatchAsync<TRequest, TResponse>(string endpoint, TRequest data)
        {
            var json = JsonConvert.SerializeObject(data);
            var content = new StringContent(json, Encoding.UTF8, "application/json");
            var request = new HttpRequestMessage(new HttpMethod("PATCH"), endpoint) { Content = content };
            var response = await _httpClient.SendAsync(request);
            response.EnsureSuccessStatusCode();
            var responseContent = await response.Content.ReadAsStringAsync();
            return JsonConvert.DeserializeObject<TResponse>(responseContent);
        }
        public async Task<TResponse> DeleteAsync<TResponse>(string endpoint)
        {
            var response = await _httpClient.DeleteAsync(endpoint);
            response.EnsureSuccessStatusCode();
            var content = await response.Content.ReadAsStringAsync();
            return JsonConvert.DeserializeObject<TResponse>(content);
        }
    }
}