using System;
using System.Diagnostics;
using System.Reflection;
using HarmonyLib;

#if DEBUG
namespace CLre_server.API.Tools
{
    public static class AccessToolsWarnings
    {
        internal static bool isEnabled = false;

        public static void Enable()
        {
            isEnabled = true;
        }
        
        public static void Disable()
        {
            isEnabled = false;
        }
    }

    [HarmonyPatch(typeof(AccessTools), "TypeByName")]
    class AccessTools_TypeByName_Patch
    {
        [HarmonyPostfix]
        public static void AfterMethodCall(Type __result, string name)
        {
            if (!AccessToolsWarnings.isEnabled) return;
            if (__result == null)
            {
                var method = (new StackTrace()).GetFrame(2).GetMethod();
                Utility.Logging.LogWarning($"[{method.DeclaringType.FullName}.{method.Name}] AccessTools.TypeByName(\"{name}\") returned null result");
            }
        }
    }
    
    [HarmonyPatch(typeof(AccessTools), "Method",
        new Type[] {typeof(string), typeof(Type[]), typeof(Type[])})]
    class AccessTools_Method_Patch
    {
        [HarmonyPostfix]
        public static void AfterMethodCall(MethodInfo __result, string typeColonMethodname)
        {
            if (!AccessToolsWarnings.isEnabled) return;
            if (__result == null)
            {
                var method = (new StackTrace()).GetFrame(2).GetMethod();
                Utility.Logging.LogWarning($"[{method.DeclaringType.FullName}.{method.Name}] AccessTools.Method(\"{typeColonMethodname}\") returned null result");
            }
        }
    }
    
    [HarmonyPatch(typeof(AccessTools), "Method",
        new Type[] {typeof(Type), typeof(string), typeof(Type[]), typeof(Type[])})]
    class AccessTools_Method2_Patch
    {
        [HarmonyPostfix]
        public static void AfterMethodCall(MethodInfo __result, Type type, string name)
        {
            if (!AccessToolsWarnings.isEnabled) return;
            if (__result == null)
            {
                var method = (new StackTrace()).GetFrame(2).GetMethod();
                Utility.Logging.LogWarning($"[{method.DeclaringType.FullName}.{method.Name}] AccessTools.Method(\"{type}\", \"{name}\") returned null result");
            }
        }
    }
}
#endif