PIAPS_CW/WebApp/Pages/User/Purchases.cshtml.cs

using BusinessLogic.BusinessLogic;
using Contracts.BusinessLogicContracts;
using Contracts.SearchModels;
using Contracts.ViewModels;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
using System.Reflection;
using WebApp.Helpers;

namespace WebApp.Pages.User
{
	[Authorize(Roles = Roles.User)]
	public class PurchasesModel : PageModel
    {
		public List<PurchaseViewModel> purchaseViewModels { get; set; }
		public UserViewModel userViewModel { get; set; }
        public BillViewModel billViewModel { get; set; }
        [BindProperty]
        public PurchaseSearchModel purchaseSearchModel { get; set; }
        public void OnGet(DateTime? datefrom, DateTime? dateto)
        {
            var UserId = this.GetUserId();
            if (UserId is null)
            {
                return;
            }

            userViewModel = APIClient.GetRequest<UserViewModel>($"user/get?id={UserId}");

            string request = "Purchase/GetList";

            request += $"?userid={UserId}&";

            if (datefrom != null)
                request += $"?datefrom={datefrom}&";

            if (dateto != null)
                request += $"?datefrom={dateto}&";

            purchaseViewModels = APIClient.GetRequest<List<PurchaseViewModel>>(request);		
		}

        public void OnPostSendBill(Guid id)
        {
            var UserId = this.GetUserId();
            if (UserId is null)
            {
                OnGet(null, null);
            }
            userViewModel = APIClient.GetRequest<UserViewModel>($"user/get?id={UserId}");

            var purchase = APIClient.GetRequest<PurchaseViewModel>($"purchase/get?id={id}");
            var products = APIClient.GetRequest<List<ProductViewModel>>($"purchase/getproducts?purchaseid={id}");

            billViewModel = new BillViewModel();
            billViewModel.UserId = new Guid(this.GetUserId());
            billViewModel.PurchaseId = id;
            billViewModel.Products = products;
            billViewModel.Count = purchase.ProductCount;
            billViewModel.Cost = purchase.Cost;
            billViewModel.DateCreated = purchase.DateCreated;
            billViewModel.UserFirstName = userViewModel.FirstName;
            billViewModel.UserLastName = userViewModel.SecondName;
            billViewModel.UserEmail = userViewModel.Email;

            APIClient.PostRequest($"purchase/createbill", billViewModel);

            OnGet(null, null);
        }
        public byte[] GetStatistics()
        {
            var UserId = this.GetUserId();
            if (UserId is null)
            {
                OnGet(null, null);
            }
            var chart = APIClient.GetRequest<byte[]>($"purchase/createchart?userId={UserId}");
            return chart;
        }
    }
}