using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using LCU.API.Internal.RepoApi.Old_Repo_Services;
using LCU.API.Internal.RepoApi.Repos.Exceptions;
using LCU.API.Internal.RepoApi.Repos.Models;
using LCU.API.Internal.RepoApi.Repos.Models.Results;
using LCU.API.Internal.RepoApi.Repos.Repositories;
using LCU.API.Internal.RepoApi.Models.Old_Repo_Models.Filters;
using LCU.API.Internal.RepoApi.Models.Old_Repo_Models.Requests;
using Moq;
using Xunit;
using LCU.API.Internal.RepoApi.Old_Repo_Exceptions;

namespace LCU.API.Internal.RepoApiTests.ServiceTests
{
    public class RepoAccountServiceTests
    {
        private readonly Mock<IRepoAccountRepository> _repoAccountRepositoryMock;
        private readonly Mock<IRepoStatusChangeRepository> _repoStatusChangeRepositoryMock;
        private readonly Mock<IRepoManualStatusRepository> _repoManualStatusRepositoryMock;
        private readonly Mock<ICollateralRepository> _collateralRepositoryMock;
        private readonly Mock<IUnitOfWork> _unitOfWorkMock;
        private readonly RepoAccountService _service;

        public RepoAccountServiceTests()
        {
            _repoAccountRepositoryMock = new Mock<IRepoAccountRepository>();
            _repoStatusChangeRepositoryMock = new Mock<IRepoStatusChangeRepository>();
            _repoManualStatusRepositoryMock = new Mock<IRepoManualStatusRepository>();
            _collateralRepositoryMock = new Mock<ICollateralRepository>();
            _unitOfWorkMock = new Mock<IUnitOfWork>();

            _service = new RepoAccountService(
                _repoAccountRepositoryMock.Object,
                _repoStatusChangeRepositoryMock.Object,
                _repoManualStatusRepositoryMock.Object,
                _collateralRepositoryMock.Object,
                _unitOfWorkMock.Object);
        }

        [Fact]
        public async Task ListAll_ShouldReturnPagedResult_WhenCalled()
        {
            // Arrange
            var pageFilter = new PageFilter { Page = 1, Limit = 10 };
            var repoAccountFilter = new RepoAccountPostFilter { RepoIdList = new List<int?> { 1, 2 }, Status = "Open" };
            var expectedResult = new PagedResult<RepoAccount>();

            _repoAccountRepositoryMock
                .Setup(repo => repo.ListAsync(It.IsAny<List<int?>>(), It.IsAny<int>(), It.IsAny<int>(), It.IsAny<string>(), It.IsAny<string?>(), It.IsAny<int?>(), It.IsAny<bool?>()))
                .ReturnsAsync(expectedResult);

            // Act
            var result = await _service.ListAll(pageFilter, repoAccountFilter);

            // Assert
            Assert.Equal(expectedResult, result);
        }

        [Fact]
        public async Task ListAll_ShouldThrowServerErrorException_WhenExceptionOccurs()
        {
            // Arrange
            var pageFilter = new PageFilter { Page = 1, Limit = 10 };
            var repoAccountFilter = new RepoAccountPostFilter();

            _repoAccountRepositoryMock
                .Setup(repo => repo.ListAsync(It.IsAny<List<int?>>(), It.IsAny<int>(), It.IsAny<int>(), It.IsAny<string>(), It.IsAny<string?>(), It.IsAny<int?>(), It.IsAny<bool?>()))
                .ThrowsAsync(new Exception());

            // Act & Assert
            await Assert.ThrowsAsync<ServerErrorException>(() => _service.ListAll(pageFilter, repoAccountFilter));
        }

        [Fact]
        public async Task FindByAuctionAssignmentId_ShouldReturnRepoAccount_WhenFound()
        {
            // Arrange
            var auctionAssignmentId = 1;
            var expectedRepoAccount = new RepoAccount();

            _repoAccountRepositoryMock
                .Setup(repo => repo.FindByAuctionAssignmentIdAsync(auctionAssignmentId))
                .ReturnsAsync(expectedRepoAccount);

            // Act
            var result = await _service.FindByAuctionAssignmentId(auctionAssignmentId);

            // Assert
            Assert.Equal(expectedRepoAccount, result);
        }

        [Fact]
        public async Task FindByAuctionAssignmentId_ShouldThrowServerErrorException_WhenExceptionOccurs()
        {
            // Arrange
            var auctionAssignmentId = 1;

            _repoAccountRepositoryMock
                .Setup(repo => repo.FindByAuctionAssignmentIdAsync(auctionAssignmentId))
                .ThrowsAsync(new Exception());

            // Act & Assert
            await Assert.ThrowsAsync<ServerErrorException>(() => _service.FindByAuctionAssignmentId(auctionAssignmentId));
        }

        [Fact]
        public async Task SaveAsync_ShouldSaveRepoAccountAndAddStatusChange()
        {
            // Arrange
            var repoAccount = new RepoAccount { RepoId = 1, Status = "Open" };
            var savedRepoAccount = new RepoAccount { RepoId = 1, Status = "Open" };

            _repoAccountRepositoryMock
                .Setup(repo => repo.AddAsync(repoAccount))
                .ReturnsAsync(savedRepoAccount);

            // Act
            var result = await _service.SaveAsync(repoAccount);

            // Assert
            Assert.Equal(repoAccount, result);
            _unitOfWorkMock.Verify(uow => uow.CompleteAsync(), Times.Once);
        }

        [Fact]
        public async Task SaveAsync_ShouldThrowServerErrorException_WhenExceptionOccurs()
        {
            // Arrange
            var repoAccount = new RepoAccount { RepoId = 1, Status = "Open" };

            _repoAccountRepositoryMock
                .Setup(repo => repo.AddAsync(repoAccount))
                .ThrowsAsync(new Exception());

            // Act & Assert
            await Assert.ThrowsAsync<RepoApi.Old_Repo_Exceptions.ServerErrorException>(() => _service.SaveAsync(repoAccount));
        }

        [Fact]
        public async Task Get_ShouldReturnRepoAccount_WhenFound()
        {
            // Arrange
            var id = 1;
            var expectedRepoAccount = new RepoAccount();

            _repoAccountRepositoryMock
                .Setup(repo => repo.FindByIdAsync(id))
                .ReturnsAsync(expectedRepoAccount);

            // Act
            var result = await _service.Get(id);

            // Assert
            Assert.Equal(expectedRepoAccount, result);
        }

        [Fact]
        public async Task Get_ShouldThrowNotFoundException_WhenRepoAccountNotFound()
        {
            // Arrange
            var id = 1;

            _repoAccountRepositoryMock
                .Setup(repo => repo.FindByIdAsync(id))
                .ReturnsAsync((RepoAccount)null);

            // Act & Assert
            await Assert.ThrowsAsync<NotFoundException>(() => _service.Get(id));
        }

        [Fact]
        public async Task Get_ShouldThrowServerErrorException_WhenExceptionOccurs()
        {
            // Arrange
            var id = 1;

            _repoAccountRepositoryMock
                .Setup(repo => repo.FindByIdAsync(id))
                .ThrowsAsync(new Exception());

            // Act & Assert
            await Assert.ThrowsAsync<ServerErrorException>(() => _service.Get(id));
        }
    }
}