OnContainerDropItems

using System;
using System.Collections.Generic;
using Newtonsoft.Json;
using Oxide.Core;
using UnityEngine;

namespace Oxide.Plugins
{
    [Info("Container Drop To Scrap", "RustPluginGenerator", "1.0.0")]
    [Description("Replaces dropped container loot with scrap paid to the looting player")]
    public class ContainerDropToScrap : RustPlugin
    {
        private const string PermBypass = "containerdroptoscrap.bypass";

        private PluginConfig config;

        private class PluginConfig
        {
            [JsonProperty("Scrap Per Item")]
            public int ScrapPerItem { get; set; } = 5;

            [JsonProperty("Bypass Permission Keeps Normal Drops")]
            public bool AllowBypass { get; set; } = true;
        }

        protected override void LoadDefaultConfig() => config = new PluginConfig();

        protected override void LoadConfig()
        {
            base.LoadConfig();
            try
            {
                config = Config.ReadObject<PluginConfig>();
                if (config == null) throw new Exception();
            }
            catch
            {
                PrintWarning("Configuration file is invalid, using defaults");
                LoadDefaultConfig();
            }
            SaveConfig();
        }

        protected override void SaveConfig() => Config.WriteObject(config);

        protected override void LoadDefaultMessages()
        {
            lang.RegisterMessages(new Dictionary<string, string>
            {
                ["Received"] = "Your looted items were converted into {0} scrap.",
                ["Reloaded"] = "ContainerDropToScrap configuration reloaded."
            }, this);
        }

        private string Msg(string key, string userId = null, params object[] args) =>
            string.Format(lang.GetMessage(key, this, userId), args);

        private void Init()
        {
            permission.RegisterPermission(PermBypass, this);
        }

        private object OnContainerDropItems(ItemContainer container)
        {
            if (container == null || container.itemList == null || container.itemList.Count == 0)
                return null;

            var player = container.playerOwner;
            if (config.AllowBypass && player != null && permission.UserHasPermission(player.UserIDString, PermBypass))
                return null;

            int itemCount = container.itemList.Count;

            List<Item> items = new List<Item>(container.itemList);
            foreach (Item item in items)
            {
                item.Remove();
            }

            if (player != null && player.IsConnected && config.ScrapPerItem > 0)
            {
                int total = itemCount * config.ScrapPerItem;
                Item scrap = ItemManager.CreateByName("scrap", total, 0);
                if (scrap != null && !player.inventory.GiveItem(scrap))
                {
                    scrap.Drop(player.transform.position, Vector3.zero);
                }
                player.ChatMessage(Msg("Received", player.UserIDString, total));
            }

            return true;
        }

        [ChatCommand("scrapreload")]
        private void CmdReload(BasePlayer player, string command, string[] args)
        {
            if (player != null && !player.IsAdmin) return;
            LoadConfig();
            if (player != null) player.ChatMessage(Msg("Reloaded", player.UserIDString));
        }
    }
}