using Microsoft.eShopWeb;
using Microsoft.eShopWeb.PublicApi.CatalogItemEndpoints;
using Microsoft.eShopWeb.Web.ViewModels;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Net;
using System.Threading.Tasks;

namespace PublicApiIntegrationTests.CatalogItemEndpoints
{
    [TestClass]
    public class CatalogItemListPagedEndpoint
    {
        [TestMethod]
        public async Task ReturnsFirst10CatalogItems()
        {
            var client = ProgramTest.NewClient;
            var response = await client.GetAsync("/api/catalog-items?pageSize=10");
            response.EnsureSuccessStatusCode();
            var stringResponse = await response.Content.ReadAsStringAsync();
            var model = stringResponse.FromJson<CatalogIndexViewModel>();

            Assert.AreEqual(10, model.CatalogItems.Count());
        }

        [TestMethod]
        public async Task ReturnsCorrectCatalogItemsGivenPageIndex1()
        {

            var pageSize = 10;
            var pageIndex = 1;

            var client = ProgramTest.NewClient;
            var response = await client.GetAsync($"/api/catalog-items");
            response.EnsureSuccessStatusCode();
            var stringResponse = await response.Content.ReadAsStringAsync();
            var model = stringResponse.FromJson<ListPagedCatalogItemResponse>();
            var totalItem = model.CatalogItems.Count();

            var response2 = await client.GetAsync($"/api/catalog-items?pageSize={pageSize}&pageIndex={pageIndex}");
            response.EnsureSuccessStatusCode();
            var stringResponse2 = await response2.Content.ReadAsStringAsync();
            var model2 = stringResponse2.FromJson<ListPagedCatalogItemResponse>();

            var totalExpected = totalItem - (pageSize * pageIndex);

            Assert.AreEqual(totalExpected, model2.CatalogItems.Count());
        }

        [DataTestMethod]
        [DataRow("catalog-items")]
        [DataRow("catalog-brands")]
        [DataRow("catalog-types")]
        [DataRow("catalog-items/1")]
        public async Task SuccessFullMutipleParallelCall(string endpointName)
        {
            var client = ProgramTest.NewClient;
            var tasks = new List<Task<HttpResponseMessage>>();

            for (int i = 0; i < 100; i++)
            {
                var task = client.GetAsync($"/api/{endpointName}");
                tasks.Add(task);
            }
            await Task.WhenAll(tasks.ToList());
            var totalKO = tasks.Count(t => t.Result.StatusCode != HttpStatusCode.OK);

            Assert.AreEqual(0, totalKO);
        }
    }
}