using LCU.Api.Internal.ArchiverApi.Services;
using LCU.Library.Internal.ArchiverApiLib.Repositories;
using LCU.Library.Internal.ArchiverApiModel.Entities;
using LCU.Library.Internal.Exceptions;
using Moq;
using NUnit.Framework;
using System;
using System.Threading.Tasks;

namespace LCU.Api.Internal.ArchiverApiTest.Services
{
    public class RegexMappingServiceTest
    {
        private Mock<IUnitOfWork> mockUnitOfWork;
        private Mock<IRegexMappingRepository> mockRegexMappingRepository;

        private RegexMappingService service;

        [SetUp]
        public void Setup()
        {
            mockUnitOfWork = new Mock<IUnitOfWork>();
            mockRegexMappingRepository = new Mock<IRegexMappingRepository>();

            service = new RegexMappingService(
                mockUnitOfWork.Object, mockRegexMappingRepository.Object);
        }

        [Test]
        public async Task Post_Success()
        {
            mockRegexMappingRepository.Setup(repository => repository.AddAsync(It.IsAny<RegexMapping>()))
                .ReturnsAsync(new RegexMapping()
                {
                    RegexMappingId = 1,
                    ApplicationMappingId = 1,
                    Tag = "{Regex5}",
                    Regex = "[0-9]"
                })
                .Verifiable();

            var regexMappingResponse = await service.SaveAsync(new RegexMapping()
            {
                ApplicationMappingId = 1,
                Tag = "{Regex5}",
                Regex = "[0-9]"
            });

            Assert.NotNull(regexMappingResponse);

            Assert.NotZero(regexMappingResponse.RegexMappingId);
            Assert.AreEqual(1, regexMappingResponse.ApplicationMappingId);
            Assert.AreEqual("{Regex5}", regexMappingResponse.Tag);
            Assert.AreEqual("[0-9]", regexMappingResponse.Regex);

            mockUnitOfWork.Verify(x => x.CompleteAsync(), Times.Once);
            mockRegexMappingRepository.Verify(x => x.AddAsync(It.IsAny<RegexMapping>()), Times.Once);
        }
        
        [Test]
        public void Post_InvalidTag()
        {
            Assert.ThrowsAsync<ServiceException>(async () =>
                await service.SaveAsync(new RegexMapping()
                {
                    ApplicationMappingId = 1,
                    Tag = "{Regex1}",
                    Regex = "[0-9]"
                }));

            mockUnitOfWork.Verify(x => x.CompleteAsync(), Times.Never);
            mockRegexMappingRepository.Verify(x => x.AddAsync(It.IsAny<RegexMapping>()), Times.Never);
        }

        [Test]
        public void Post_Exception()
        {
            mockRegexMappingRepository.Setup(repository => repository.AddAsync(It.IsAny<RegexMapping>()))
              .ThrowsAsync(new Exception("Test")).Verifiable();

            Assert.ThrowsAsync<ServiceException>(async () =>
                await service.SaveAsync(new RegexMapping()
                {
                    ApplicationMappingId = 1,
                    Tag = "{Regex5}",
                    Regex = "[0-9]"
                }));

            mockUnitOfWork.Verify(x => x.CompleteAsync(), Times.Never);
            mockRegexMappingRepository.Verify(x => x.AddAsync(It.IsAny<RegexMapping>()), Times.Once());
        }

        [Test]
        public async Task GetByApplicationMappingId_Success()
        {
            mockRegexMappingRepository.Setup(repository => repository.FindByApplicationMappingIdAsync(It.IsAny<int>()))
                .ReturnsAsync(new RegexMapping()
                {
                    RegexMappingId = 1,
                    ApplicationMappingId = 1,
                    Tag = "{Regex5}",
                    Regex = "[0-9]"
                });

            var regexMappingResponse = await service.GetByApplicationMappingIdAsync(1);

            Assert.NotNull(regexMappingResponse);

            Assert.NotZero(regexMappingResponse.RegexMappingId);
            Assert.AreEqual(1, regexMappingResponse.ApplicationMappingId);
            Assert.AreEqual("{Regex5}", regexMappingResponse.Tag);
            Assert.AreEqual("[0-9]", regexMappingResponse.Regex);

            mockRegexMappingRepository.Verify(x => x.FindByApplicationMappingIdAsync(It.IsAny<int>()), Times.Once);
        }

        [Test]
        public void GetByApplicationMappingId_Exception()
        {
            mockRegexMappingRepository.Setup(repository => repository.FindByRegexMappingIdAsync(It.IsAny<int>()))
              .ThrowsAsync(new Exception("Test")).Verifiable();

            Assert.ThrowsAsync<ServiceException>(async () =>
                await service.GetByApplicationMappingIdAsync(1));

            mockRegexMappingRepository.Verify(x => x.FindByApplicationMappingIdAsync(It.IsAny<int>()), Times.Once());
        }

        [Test]
        public async Task GetByregexMappingId_Success()
        {
            mockRegexMappingRepository.Setup(repository => repository.FindByRegexMappingIdAsync(It.IsAny<int>()))
                .ReturnsAsync(new RegexMapping()
                {
                    RegexMappingId = 1,
                    ApplicationMappingId = 1,
                    Tag = "{Regex5}",
                    Regex = "[0-9]"
                });

            var regexMappingResponse = await service.GetByRegexMappingIdAsync(1);

            Assert.NotNull(regexMappingResponse);

            Assert.NotZero(regexMappingResponse.RegexMappingId);
            Assert.AreEqual(1, regexMappingResponse.ApplicationMappingId);
            Assert.AreEqual("{Regex5}", regexMappingResponse.Tag);
            Assert.AreEqual("[0-9]", regexMappingResponse.Regex);

            mockRegexMappingRepository.Verify(x => x.FindByRegexMappingIdAsync(It.IsAny<int>()), Times.Once);
        }

        [Test]
        public void GetByRegexMappingId_Exception()
        {
            mockRegexMappingRepository.Setup(repository => repository.FindByRegexMappingIdAsync(It.IsAny<int>()))
              .ThrowsAsync(new Exception("Test")).Verifiable();

            Assert.ThrowsAsync<ServiceException>(async () =>
                await service.GetByRegexMappingIdAsync(1));

            mockUnitOfWork.Verify(x => x.CompleteAsync(), Times.Never);
            mockRegexMappingRepository.Verify(x => x.FindByRegexMappingIdAsync(It.IsAny<int>()), Times.Once());
        }

        [Test]
        public void Update_Success()
        {
            var originalRegex = new RegexMapping()
            {
                RegexMappingId = 1,
                ApplicationMappingId = 1,
                Tag = "{Regex5}",
                Regex = "[0-9]"
            };

            var updatedRegex = new RegexMapping()
            {
                RegexMappingId = 1,
                ApplicationMappingId = 2,
                Tag = "{Regex50}",
                Regex = "[0-9]*"
            };

            mockRegexMappingRepository.Setup(repository => repository.FindByRegexMappingIdAsync(It.IsAny<int>()))
               .ReturnsAsync((RegexMapping)originalRegex).Verifiable();

            var regexMappingResponse = service.Update(updatedRegex);

            Assert.NotNull(regexMappingResponse);

            Assert.AreEqual(regexMappingResponse.RegexMappingId, originalRegex.RegexMappingId);
            Assert.AreEqual(regexMappingResponse.ApplicationMappingId, updatedRegex.ApplicationMappingId);
            Assert.AreEqual(regexMappingResponse.Tag, updatedRegex.Tag);
            Assert.AreEqual(regexMappingResponse.Regex, updatedRegex.Regex);

            mockRegexMappingRepository.Verify(x => x.FindByRegexMappingIdAsync(It.IsAny<int>()), Times.Once());
            mockUnitOfWork.Verify(x => x.Complete(), Times.Once);
        }

        [Test]
        public void Update_InvalidTag()
        {
            Assert.ThrowsAsync<ServiceException>(async () =>
                await service.SaveAsync(new RegexMapping()
                {
                    ApplicationMappingId = 1,
                    Tag = "{Regex1}",
                    Regex = "[0-9]"
                }));

            mockUnitOfWork.Verify(x => x.CompleteAsync(), Times.Never);
            mockRegexMappingRepository.Verify(x => x.AddAsync(It.IsAny<RegexMapping>()), Times.Never);
        }

        [Test]
        public void Update_Exception()
        {
            var updatedRegex = new RegexMapping()
            {
                RegexMappingId = 1,
                ApplicationMappingId = 2,
                Tag = "{Regex50}",
                Regex = "[0-9]*"
            };

            mockRegexMappingRepository.Setup(repository => repository.FindByRegexMappingIdAsync(It.IsAny<int>()))
               .ThrowsAsync(new Exception("Test")).Verifiable();

            Assert.Throws<ServiceException>(() =>
                service.Update(updatedRegex));

            mockUnitOfWork.Verify(x => x.CompleteAsync(), Times.Never);
            mockRegexMappingRepository.Verify(x => x.FindByRegexMappingIdAsync(It.IsAny<int>()), Times.Once());
        }

        [Test]
        public void Delete_Success()
        {
            mockRegexMappingRepository.Setup(repository => repository.FindByRegexMappingIdAsync(It.IsAny<int>()))
                .ReturnsAsync(new RegexMapping()
                {
                    RegexMappingId = 1,
                    ApplicationMappingId = 1,
                    Tag = "{Regex5}",
                    Regex = "[0-9]"
                })
                .Verifiable();

            mockRegexMappingRepository.Setup(repository => repository.Remove(It.IsAny<RegexMapping>()))
                .Verifiable();

            service.DeleteAsync(1);

            mockRegexMappingRepository.Verify(x => x.FindByRegexMappingIdAsync(It.IsAny<int>()), Times.Once());
            mockUnitOfWork.Verify(x => x.Complete(), Times.Once());
        }

        [Test]
        public void Delete_Exception() 
        {
            var deleteRegex = new RegexMapping()
            {
                RegexMappingId = 1,
                ApplicationMappingId = 2,
                Tag = "{Regex5}",
                Regex = "[0-9]*"
            };

            mockRegexMappingRepository.Setup(repository => repository.FindByRegexMappingIdAsync(It.IsAny<int>()))
              .ThrowsAsync(new Exception("Test")).Verifiable();

            Assert.Throws<ServiceException>(() =>
                service.Update(deleteRegex));

            mockUnitOfWork.Verify(x => x.CompleteAsync(), Times.Never);
            mockRegexMappingRepository.Verify(x => x.FindByRegexMappingIdAsync(It.IsAny<int>()), Times.Once());
        }
    }
}