using System.Collections.Generic;
using System.Linq;
using Mono.Cecil;

namespace IcyClawz.CustomInteractions
{
    public static class Prepatch
    {
        public static IEnumerable<string> TargetDLLs => new[] { "Assembly-CSharp.dll" };

        public static void Patch(ref AssemblyDefinition assembly)
        {
            var type = assembly.MainModule.GetType("GClass2816"); // DynamicInteraction
            if (type != null)
            {
                type.IsSealed = false;
                var field = type.Fields.SingleOrDefault(c => c.Name == "action_0");
                if (field != null)
                {
                    field.IsFamily = true;
                    field.IsInitOnly = false;
                }
                var ctor = type.Methods.SingleOrDefault(c => c.Name == ".ctor");
                if (ctor != null)
                {
                    var param = ctor.Parameters.SingleOrDefault(c => c.Name == "callback");
                    if (param != null)
                    {
                        param.IsOptional = true;
                        param.HasDefault = true;
                        param.Constant = null;
                    }
                }
            }
            //assembly.Write("Assembly-CSharp-CustomInteractions.dll");
        }
    }
}