using AsbCloudApp.Data;
using AsbCloudApp.Services;
using AsbCloudDb.Model;
using AsbCloudInfrastructure.Services;
using AsbCloudInfrastructure.Services.Cache;
using Moq;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Xunit;

namespace AsbCloudWebApi.Tests.ServicesTests
{
    public class DrillerServiceTest
    {
        private readonly AsbCloudDbContext context;
        private readonly CacheDb cacheDb;
        private DrillerDto drillerObj = new DrillerDto
        {
            Id = 0,
            Name = "Тестовый",
            Patronymic = "Тест",
            Surname = "Тестович"
        };

    public DrillerServiceTest()
        {
            context = TestHelpter.MakeTestContext();
            cacheDb = new CacheDb();
            context.SaveChanges();
        }

        ~DrillerServiceTest()
        {
        }

        [Fact]
        public async Task GetListAsync_count()
        {
            var service = new DrillerService(context);

            ///Добавляем элемент
            var id = await service.InsertAsync(drillerObj, CancellationToken.None);
            id = await service.InsertAsync(drillerObj, CancellationToken.None);
            id = await service.InsertAsync(drillerObj, CancellationToken.None);

            var newCount = (await service.GetAllAsync(CancellationToken.None)).Count();
            Assert.Equal(3, newCount);
        }

        [Fact]
        public async Task InsertAsync_returns_id()
        {            
            var service = new DrillerService(context);
            var id = await service.InsertAsync(drillerObj, CancellationToken.None);
            Assert.NotEqual(0, id);
        }

        [Fact]
        public async Task UpdateAsync_not_add_if_exists()
        {
            var service = new DrillerService(context);

            ///Добавляем элемент
            var id = await service.InsertAsync(drillerObj, CancellationToken.None);
            var oldCount = (await service.GetAllAsync(CancellationToken.None)).Count();

            //Обновляем
            drillerObj.Id = id;
            drillerObj.Name = "Исправлено";
            await service.UpdateAsync(id, drillerObj, CancellationToken.None);
            var newCount = (await service.GetAllAsync(CancellationToken.None)).Count();
            Assert.Equal(newCount, oldCount);
        }

        [Fact]
        public async Task DeleteAsync_decrement_count()
        {
            var service = new DrillerService(context);

            ///Добавляем элемент
            var id = await service.InsertAsync(drillerObj, CancellationToken.None);
            var oldCount = (await service.GetAllAsync(CancellationToken.None)).Count();

            //Удаляем его
            await service.DeleteAsync(id, CancellationToken.None);
            var newCount = (await service.GetAllAsync(CancellationToken.None)).Count();
            Assert.Equal(newCount, oldCount-1);
        }


    }
}