using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;

namespace LibHac.Tests;

internal class ResultNameResolver : Result.IResultNameResolver
{
    private Lazy<Dictionary<Result, string>> ResultNames { get; } = new Lazy<Dictionary<Result, string>>(GetResultNames);

    public bool TryResolveName(Result result, out string name)
    {
        return ResultNames.Value.TryGetValue(result, out name);
    }

    private static Dictionary<Result, string> GetResultNames()
    {
        var dict = new Dictionary<Result, string>();

        Assembly assembly = typeof(Result).Assembly;

        foreach (TypeInfo type in assembly.DefinedTypes.Where(x => x.Name.Contains("Result")))
            foreach (PropertyInfo property in type.DeclaredProperties
                .Where(x => x.PropertyType == typeof(Result.Base) && x.GetMethod?.IsStatic == true && x.SetMethod == null))
            {
                object value = property.GetValue(null, null);
                if (value is null) continue;

                Result resultValue = ((Result.Base)value).Value;
                string name = $"{type.Name}{property.Name}";

                dict[resultValue] = name;
            }

        return dict;
    }
}