using Aki.Reflection.Patching;
using BepInEx;
using EFT;
using HarmonyLib;
using System.Collections.Generic;
using System.Reflection;
using System.Reflection.Emit;

namespace SamSWAT.OldFreelook
{
    [BepInPlugin("com.samswat.oldfreelook", "SamSWAT.OldFreelook", "1.0.0")]
    public class Plugin : BaseUnityPlugin
    {
        void Awake()
        {
            new Transpiler().Enable();
        }
    }

    public class Transpiler : ModulePatch
    {
        protected override MethodBase GetTargetMethod()
        {
            return typeof(Player).GetMethod("Look", BindingFlags.Instance | BindingFlags.Public);
        }

        [PatchTranspiler]
        private static IEnumerable<CodeInstruction> PatchTranspile(IEnumerable<CodeInstruction> instructions)
        {
            var codes = new List<CodeInstruction>(instructions);
            var searchCode = new CodeInstruction(OpCodes.Call, AccessTools.Method(typeof(EFTHardSettings), "get_Instance"));

            int endIndex = -1;

            for (int i = 0; i < codes.Count; i++)
            {
                if (codes[i].opcode == searchCode.opcode && codes[i].operand == searchCode.operand)
                {
                    endIndex = i;
                    break;
                }
            }

            if (endIndex == -1)
            {
                Logger.LogError("Old Freelook patch failed: Could not find reference code.");
                return instructions;
            }

            codes.RemoveRange(0, endIndex);

            return codes;
        }
    }
}