using System;
using System.Linq;
using System.Collections.Generic;
using System.Threading.Tasks;
using NUnit.Framework;
using Moq;
using LCU.Library.Internal.CoreApiWrapperModel.CoreModels;
using LCU.Api.Internal.CoreApiWrapper.Services;
using LCU.Library.Internal.CoreApiWrapperLib.DataAccess;
using LCU.Library.Internal.CoreApiWrapperModel.CoreModels.CoreRequests;
using LCU.Library.Internal.CoreApiWrapperModel.CoreModels.AccessChannelPersons;

namespace LCU.Api.Internal.CoreApiWrapperTest.Service
{
    public class AccessChannelPersonsServiceTest
    {
        private readonly AccessChannelPersonsService _accessChannelPersonsService;
        private readonly Mock<IAccessChannelPersonsDao> _mockAccessChannelPersonsDao;

        public AccessChannelPersonsServiceTest()
        {
            _mockAccessChannelPersonsDao = new Mock<IAccessChannelPersonsDao>();
            _accessChannelPersonsService = new AccessChannelPersonsService(_mockAccessChannelPersonsDao.Object);
        }

        [Test]
        public void GetAccessChannelPersonCoreApiResponseAsync_ExceptionThrown()
        {
            _mockAccessChannelPersonsDao.Setup(x => x.FindAccessChannelPersonsByPerson(It.IsAny<CoreRequestParameters>(),
                                                                                       It.IsAny<AccessChannelPersonsByPersonRequest>()))
                                            .Throws(new Exception("Oops"));

            Assert.ThrowsAsync<Exception>(async () =>
                await _accessChannelPersonsService.GetAccessChannelPersonCoreApiResponseAsync(new AccessChannelPersonsByPersonRequest()));
        }

        [Test]
        public async Task GetAccessChannelPersonCoreApiResponseAsync_UserFieldsReturned()
        {
            var accessChannelPersons = new List<AccessChannelPerson>()
            {
                new AccessChannelPerson()
                {
                    ChannelNumber = 1,
                    PersonNumber = 2,
                    UserId = "3"
                },
                new AccessChannelPerson()
                {
                    ChannelNumber = 4,
                    PersonNumber = 5,
                    UserId = "6"
                }
            };
            var coreMessageheader = new CoreMessageHeader();
            var coreApiResponse = new CoreApiMessage<IEnumerable<AccessChannelPerson>>(coreMessageheader, accessChannelPersons);
            _mockAccessChannelPersonsDao.Setup(x => x.FindAccessChannelPersonsByPerson(It.IsAny<CoreRequestParameters>(),
                                                                                       It.IsAny<AccessChannelPersonsByPersonRequest>()))
                                            .ReturnsAsync(coreApiResponse);


            var accessChannelPersonsByPersonRequest = new AccessChannelPersonsByPersonRequest();

            var result = await _accessChannelPersonsService.GetAccessChannelPersonCoreApiResponseAsync(accessChannelPersonsByPersonRequest);
            Assert.NotNull(result);
            Assert.AreEqual(2, result.MessageBody.Count());
        }

        [Test]
        public void UpdateAccountChannelPersonAsync_ExceptionThrown()
        {
            _mockAccessChannelPersonsDao.Setup(x => x.UpdateAccessChannelPerson(It.IsAny<CoreApiMessage<AccessChannelPerson>>()))
                                            .Throws(new Exception("Oops"));

            var request = new AccessChannelPerson()
            {
                ChannelNumber = 1,
                PersonNumber = 2,
                UserId = "3"
            };
            Assert.ThrowsAsync<Exception>(async () =>
                await _accessChannelPersonsService.UpdateAccessChannelPersonAsync(request, 10002312312));
        }

        [Test]
        public void UpdateAccountChannelPersonAsync_NullResult_ExceptionThrown()
        {
            AccessChannelPerson response = null;
            _mockAccessChannelPersonsDao.Setup(x => x.UpdateAccessChannelPerson(It.IsAny<CoreApiMessage<AccessChannelPerson>>()))            
                                            .ReturnsAsync(response);

            var request = new AccessChannelPerson()
            {
                ChannelNumber = 1,
                PersonNumber = 2,
                UserId = "3"
            };
            Assert.ThrowsAsync<Exception>(async () =>
                await _accessChannelPersonsService.UpdateAccessChannelPersonAsync(request, 10002312312));
        }

        [Test]
        public async Task UpdateAccountChannelPersonAsync_UpdatedUserFieldsReturned()
        {
            var response = new AccessChannelPerson()
            {
                ChannelNumber = 1,
                PersonNumber = 2,
                UserId = "3"
            };
            _mockAccessChannelPersonsDao.Setup(x => x.UpdateAccessChannelPerson(It.IsAny<CoreApiMessage<AccessChannelPerson>>()))
                                            .ReturnsAsync(response);

            var request = new AccessChannelPerson()
            {
                ChannelNumber = 1,
                PersonNumber = 2,
                UserId = "3"
            };
            var result = await _accessChannelPersonsService.UpdateAccessChannelPersonAsync(request, 10002312312);
            Assert.NotNull(result);
            Assert.AreEqual(response, result);
        }
    }
}