using CodePlay.Core.Interfaces;
using CodePlay.Core.Models;
using CodePlay.Core.Common;

namespace CodePlay.Core.Validators;

/// <summary>
/// 验证流水线服务
/// </summary>
public class ValidationPipeline
{
    private readonly CSharpCompilerValidator _validator;
    private readonly AutoFixEngine _fixEngine;
    
    public ValidationPipeline()
    {
        _validator = new CSharpCompilerValidator();
        _fixEngine = new AutoFixEngine();
    }
    
    /// <summary>
    /// 执行验证流水线
    /// </summary>
    public async Task<ValidationSummary> ValidateAsync(
        string code, 
        LanguageType language, 
        int maxRounds = 3,
        CancellationToken cancellationToken = default)
    {
        var summary = new ValidationSummary
        {
            Passed = false,
            RoundsExecuted = 0,
            NeedsManualReview = false,
            CompilationErrors = new List<CompilationError>(),
            ValidationLog = new List<string>()
        };
        
        summary.ValidationLog.Add($"Starting validation at {DateTime.UtcNow:HH:mm:ss.fff}");
        
        for (int round = 1; round <= maxRounds; round++)
        {
            summary.RoundsExecuted = round;
            summary.ValidationLog.Add($"Round {round} starting");
            
            // 编译验证
            var compileResult = await _validator.ValidateAsync(code, language, cancellationToken);
            
            if (compileResult.Success)
            {
                summary.Passed = true;
                summary.ValidationLog.Add($"Round {round}: Compilation succeeded");
                break;
            }
            
            summary.CompilationErrors = compileResult.Errors;
            summary.ValidationLog.Add($"Round {round}: Compilation failed with {compileResult.Errors.Count} errors");
            
            // 尝试自动修复
            var fixResult = await _fixEngine.FixAsync(code, compileResult.Errors, round, cancellationToken);
            
            if (fixResult.CanFix)
            {
                code = fixResult.FixedCode!;
                summary.ValidationLog.Add($"Round {round}: Auto-fix applied - {fixResult.FixDescription}");
            }
            else
            {
                summary.NeedsManualReview = true;
                summary.ValidationLog.Add($"Round {round}: Cannot auto-fix, needs manual review");
                break;
            }
        }
        
        if (!summary.Passed)
        {
            summary.ValidationLog.Add($"Validation completed - Needs manual review");
        }
        
        return summary;
    }
}