using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using Moq;
using Xunit;
using LCU.Api.Internal.FileOperations.Services;
using LCU.Library.Internal.FileOperationsModels.Models;
namespace LCU.Api.Internal.FileOperationsTests.Services;

public class DirectFileOperationsServiceTest
{
    private readonly DirectFileOperationsService _directFileOperationsService;
    private Mock<IFileOperationsService> _mockFileOperationsService;

    public DirectFileOperationsServiceTest()
    {
        _mockFileOperationsService = new Mock<IFileOperationsService>();
        _directFileOperationsService = new DirectFileOperationsService(_mockFileOperationsService.Object);
    }

    [Fact]
    public async Task HandleDirectFileOperationsRequest_Return_IsSuccessful_True()
    {
        var validRequestResponse = new RequestResponse() { MessageStack = new List<string>(), IsSuccessful = true };
        _mockFileOperationsService.Setup(service => service.PerformFileOperation(It.IsAny<QueueRequest>())).Returns(validRequestResponse);

        var request = new MoveFileRequest()
        {
            SourcePath = "",
            SourceFile = "",
            DestinationPath = ""
        };

        // act
        var result = await _directFileOperationsService.HandleDirectFileOperationsRequest(request, FileOperationType.Move);
        Assert.NotNull(result);
        Assert.True(validRequestResponse.IsSuccessful);
        _mockFileOperationsService.Verify(service => service.PerformFileOperation(It.IsAny<QueueRequest>()), Times.Once);
    }

    [Fact]
    public async Task HandleDirectFileOperationsRequest_Return_IsSuccessful_False()
    {
        var validRequestResponse = new RequestResponse() { MessageStack = new List<string> { "test" }, IsSuccessful = false };
        _mockFileOperationsService.Setup(service => service.PerformFileOperation(It.IsAny<QueueRequest>())).Returns(validRequestResponse);

        var request = new MoveFileRequest()
        {
            SourcePath = "",
            SourceFile = "",
            DestinationPath = ""
        };

        // act
        var result = await _directFileOperationsService.HandleDirectFileOperationsRequest(request, FileOperationType.Move);
        Assert.NotNull(result);
        Assert.False(result.IsSuccessful);
        Assert.Single(result.MessageStack);
        _mockFileOperationsService.Verify(service => service.PerformFileOperation(It.IsAny<QueueRequest>()), Times.Once);
    }

    [Fact]
    public void HandleDirectFileOperationsRequest_PerformFileOperation_ThrowsException()
    {
        var validRequestResponse = new RequestResponse() { MessageStack = new List<string>(), IsSuccessful = true };
        _mockFileOperationsService.Setup(service => service.PerformFileOperation(It.IsAny<QueueRequest>())).Throws(new Exception("Test"));

        var request = new MoveFileRequest()
        {
            SourcePath = "",
            SourceFile = "",
            DestinationPath = ""
        };

        // act
        Assert.ThrowsAsync<ArgumentNullException>(async () => await _directFileOperationsService.HandleDirectFileOperationsRequest(request, FileOperationType.Move));
        _mockFileOperationsService.Verify(service => service.PerformFileOperation(It.IsAny<QueueRequest>()), Times.Once);
    }
}