using System.Reflection;


using ServerCore; using ServerBase;


namespace ServerBase;

public class MetaValidator
{
    public void validate<T>(IReadOnlyList<T> list, ValidatorErrorCollection errors)
    {
        var thisAssembly = Assembly.GetExecutingAssembly();
        var methods = thisAssembly.GetTypes()
            .SelectMany(x => x.GetMethods(BindingFlags.Public | BindingFlags.Static))
            .Where(x => x.GetCustomAttributes<MetaValidatorAttribute>().Any())
            .Where(x => x.GetParameters()?[0]?.ParameterType == typeof(T))
            .ToList();

        if (methods.Count == 0)
        {
            Log.getLogger().error($"not found validateFunc. type: {typeof(T).Name}");
            return;
        }

        var validateFunc = MethodInfoExtentions.compile<Action<T, ValidatorErrorCollection>>(methods[0]);

        errors.CurrentName = typeof(T).Name;
        // var invokeParams = new object[1];
        foreach (var (item, i) in list.Select((value, i) => (value, i)))
        {
            errors.CurrentArrayIndex = i;
            validateFunc.Invoke(item!, errors);
        }
    }
}