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 ScheduleServiceTest
    {
        private readonly AsbCloudDbContext context;
        private readonly CacheDb cacheDb;
        private ScheduleDto entity = new ScheduleDto
        {
            ShiftStart = DateTime.Parse("2022-05-16T10:00:00"),
            ShiftEnd = DateTime.Parse("2022-05-16T18:00:00"),
            DrillStart = DateTime.Parse("2022-05-16T10:00:00"),
            DrillEnd = DateTime.Parse("2022-05-16T18:00:00")
        };

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

        ~ScheduleServiceTest()
        {
        }

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

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

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

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

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

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

            //Обновляем
            entity.Id = id;
            entity.DrillEnd = entity.DrillEnd.AddHours(-3);
            await service.UpdateAsync(id, entity, CancellationToken.None);
            var newCount = (await service.GetAllAsync(CancellationToken.None)).Count();
            Assert.Equal(newCount, oldCount);
        }

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

            ///Добавляем элемент
            var id = await service.InsertAsync(entity, 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);
        }


    }
}