using System;

using System.Linq;

namespace BeyondNetCode.Shell.Aop

{

public class AspectExecutor : IAspectExecutor

{

private readonly Type[] _types;

private readonly IPointCut _pointCut;

private readonly Func<Type, IAspect> _aspectFactory;

public AspectExecutor(Type[] types, Func<Type, IAspect> aspectFactory, IPointCut pointCut)

{

_aspectFactory = aspectFactory;

_pointCut = pointCut;

_types = types;

}

public void Execute(IJoinPoint joinPoint)

{

var typesToApply = _types.Where(x => _pointCut.CanApply(joinPoint, x));

if (typesToApply.Any())

{

var aspectsToApply = typesToApply.Select(_aspectFactory).OrderBy(x => x.GetOrder(joinPoint)).ToArray();

var root = aspectsToApply[0];

var aspect = root;

for (var i = 1; i < aspectsToApply.Length; i++)

{

aspect.SetNext(aspectsToApply[i]);

aspect = aspect.GetNext();

}

root.Apply(joinPoint);

}

else

{

joinPoint.Proceed();

}

}

}

}