OnPlayerRecovered

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

namespace Oxide.Plugins
{
    [Info("Recovery Protection", "RustPluginGenerator", "1.0.0")]
    [Description("Grants a short damage-reduction window to players who recover from the wounded state")]
    public class RecoveryProtection : RustPlugin
    {
        private const string PermUse = "recoveryprotection.use";

        private PluginConfig config;
        private readonly Dictionary<ulong, float> protectedUntil = new Dictionary<ulong, float>();
        private readonly Dictionary<ulong, Timer> timers = new Dictionary<ulong, Timer>();

        private class PluginConfig
        {
            [JsonProperty("Protection duration (seconds)")]
            public float Duration = 10f;

            [JsonProperty("Damage multiplier while protected")]
            public float DamageMultiplier = 0.25f;
        }

        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>
            {
                ["Protected"] = "You are protected for {0} seconds after recovering. Take it easy.",
                ["Expired"] = "Your recovery protection has ended.",
                ["NoPermission"] = "You do not have permission to use this feature."
            }, 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(PermUse, this);
        }

        private void OnPlayerRecovered(BasePlayer player)
        {
            if (player == null || player.IsNpc || !player.IsConnected) return;
            if (!permission.UserHasPermission(player.UserIDString, PermUse)) return;

            ulong id = player.userID.Get();
            protectedUntil[id] = Time.realtimeSinceStartup + config.Duration;
            player.ChatMessage(Msg("Protected", player.UserIDString, config.Duration));

            if (timers.TryGetValue(id, out Timer existing) && existing != null)
                existing.Destroy();

            timers[id] = timer.Once(config.Duration, () =>
            {
                protectedUntil.Remove(id);
                timers.Remove(id);
                if (player != null && player.IsConnected)
                    player.ChatMessage(Msg("Expired", player.UserIDString));
            });
        }

        private void OnEntityTakeDamage(BaseCombatEntity entity, HitInfo info)
        {
            if (entity == null || info == null) return;
            BasePlayer victim = entity as BasePlayer;
            if (victim == null) return;

            if (!protectedUntil.TryGetValue(victim.userID.Get(), out float expiry)) return;
            if (Time.realtimeSinceStartup > expiry) { protectedUntil.Remove(victim.userID.Get()); return; }

            info.damageTypes.ScaleAll(config.DamageMultiplier);
        }

        private void Unload()
        {
            foreach (var timer in timers.Values)
                timer?.Destroy();
            timers.Clear();
            protectedUntil.Clear();
        }
    }
}