CourseWork_Bank/Bank/BankCashierApp/APICashier.cs

using Azure;
using BankContracts.ViewModels;
using BankContracts.ViewModels.Cashier.ViewModels;
using BankContracts.ViewModels.Client.ViewModels;
using Newtonsoft.Json;
using System.Net.Http.Headers;
using System.Text;

namespace BankCashierApp
{
	public class APICashier
	{
		private static readonly HttpClient _client = new();

		public static string ErrorMessage = string.Empty;

		//Вью-модели, необходимые для дальнейшего генерирования запросов к апишке
		public static CashierViewModel? Cashier { get; set; } = null;

		public static CreditingViewModel? Crediting { get; set; } = null;

		public static DebitingViewModel? Debiting { get; set; } = null;

		public static AccountViewModel? Account { get; set; } = null;

		public static CardViewModel? Card { get; set; } = null;

		public static void Connect(IConfiguration configuration)
		{
			_client.BaseAddress = new Uri(configuration["IPAddress"]);
			_client.DefaultRequestHeaders.Accept.Clear();
			_client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
		}

		public static void SetErrorMessage(string error)
		{
			ErrorMessage = error;
		}

		//Get-запрос
		public static T? GetRequest<T>(string requestUrl)
		{
			var response = _client.GetAsync(requestUrl);
			var result = response.Result.Content.ReadAsStringAsync().Result;

			if (response.Result.IsSuccessStatusCode)
			{
				return JsonConvert.DeserializeObject<T>(result);
			}
			else
			{
				throw new Exception(result);
			}
		}

        //Post-запрос
        public static async Task PostRequest<T>(string requestUrl, T model)
        {
            var json = JsonConvert.SerializeObject(model);
            var data = new StringContent(json, Encoding.UTF8, "application/json");

            var response = await _client.PostAsync(requestUrl, data);

            if (!response.IsSuccessStatusCode)
            {
                var result = await response.Content.ReadAsStringAsync();
                throw new HttpRequestException($"Request failed with status code {response.StatusCode}: {result}");
            }
        }


        //Post-запрос для получения данных
        public static T? PostRequestReport<T, U>(string requestUrl, U model)
		{
			var json = JsonConvert.SerializeObject(model);
			var data = new StringContent(json, Encoding.UTF8, "application/json");

			var response = _client.PostAsync(requestUrl, data);

			var result = response.Result.Content.ReadAsStringAsync().Result;

			if (response.Result.IsSuccessStatusCode)
			{
				return JsonConvert.DeserializeObject<T>(result);
			}
			else
			{
				throw new Exception(result);
			}
		}
	}
}