using CodePlay.Core.Services;
using CodePlay.Core.Common;
using Xunit;

namespace CodePlay.Tests.Services;

public class UnconvertibleSyntaxHandlerTests
{
    private readonly UnconvertibleSyntaxHandler _handler;
    
    public UnconvertibleSyntaxHandlerTests()
    {
        _handler = new UnconvertibleSyntaxHandler();
    }
    
    [Fact]
    public void DetectUnconvertibleSyntax_AsyncAwait_ShouldDetect()
    {
        var code = @"
public async Task<string> GetDataAsync()
{
    var result = await httpClient.GetStringAsync(url);
    return result;
}";
        
        var issues = _handler.DetectUnconvertibleSyntax(code, LanguageType.CSharp, LanguageType.Java);
        
        Assert.NotEmpty(issues);
        Assert.Contains(issues, i => i.OriginalCode.Contains("async"));
        Assert.Contains(issues, i => i.OriginalCode.Contains("await"));
    }
    
    [Fact]
    public void DetectUnconvertibleSyntax_LINQ_ShouldDetect()
    {
        var code = @"
var result = source.Where(x => x > 0)
                  .Select(x => x * 2)
                  .ToList();";
        
        var issues = _handler.DetectUnconvertibleSyntax(code, LanguageType.CSharp, LanguageType.Java);
        
        Assert.NotEmpty(issues);
        Assert.Contains(issues, i => i.Description.Contains("var") || i.Description.Contains("LINQ"));
    }
    
    [Fact]
    public void AssessFeasibility_NoIssues_ShouldReturnHighConfidence()
    {
        var code = @"
public class Calculator
{
    public int Add(int a, int b)
    {
        return a + b;
    }
}";
        
        var feasibility = _handler.AssessFeasibility(code, LanguageType.CSharp, LanguageType.Java);
        
        Assert.True(feasibility.IsFeasible);
        Assert.True(feasibility.ConfidenceScore > 80);
    }
}