DeathNotes.cs

// #define DEBUG

using Newtonsoft.Json;
using Oxide.Core;
using Rust;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using UnityEngine;

namespace Oxide.Plugins
{
    using EnemyPrefabs = DeathNotes.RemoteConfiguration<Dictionary<string, string>>;
    using WeaponPrefabs = DeathNotes.RemoteConfiguration<Dictionary<string, string>>;
    using CombatEntityTypes = DeathNotes.RemoteConfiguration<Dictionary<string, DeathNotes.CombatEntityType>>;

    [Info("Death Notes", "LaserHydra", "6.3.6")]
    class DeathNotes : RustPlugin
    {
        #region Fields

        private const string WildcardCharacter = "*";
        private const string CanSeePermission = "deathnotes.cansee";

        private static DeathNotes _instance;

        private PluginConfiguration _configuration;

        private readonly EnemyPrefabs _enemyPrefabs = new EnemyPrefabs("EnemyPrefabs");
        private readonly WeaponPrefabs _weaponPrefabs = new WeaponPrefabs("WeaponPrefabs");
        private readonly CombatEntityTypes _combatEntityTypes = new CombatEntityTypes("CombatEntityTypes");

        private readonly Regex _colorTagRegex = new Regex(@"<color=.{0,7}>", RegexOptions.Compiled | RegexOptions.IgnoreCase);
        private readonly Regex _sizeTagRegex = new Regex(@"<size=\d*>", RegexOptions.Compiled | RegexOptions.IgnoreCase);

        private readonly List<string> _richTextLiterals = new List<string>
        {
            "</color>", "</size>", "<b>", "</b>", "<i>", "</i>"
        };

        private readonly Dictionary<ulong, AttackInfo> _previousAttack = new Dictionary<ulong, AttackInfo>();

        private readonly Func<PluginConfiguration.DeathMessage, DeathData, bool>[] _messageMatchingStages =
        {
            (m, d) => MatchesCombatEntityType(d.KillerEntityType, m.KillerType) &&
                      MatchesCombatEntityType(d.VictimEntityType, m.VictimType) &&
                      MatchesDamageType(d.DamageType, m.DamageType),

            (m, d) => MatchesCombatEntityType(d.KillerEntityType, m.KillerType) &&
                      MatchesCombatEntityType(d.VictimEntityType, m.VictimType) &&
                      m.DamageType == WildcardCharacter,

            (m, d) => MatchesCombatEntityType(d.KillerEntityType, m.KillerType) &&
                      m.VictimType == WildcardCharacter &&
                      MatchesDamageType(d.DamageType, m.DamageType),

            (m, d) => m.KillerType == WildcardCharacter &&
                      MatchesCombatEntityType(d.VictimEntityType, m.VictimType) &&
                      MatchesDamageType(d.DamageType, m.DamageType),

            (m, d) => MatchesCombatEntityType(d.KillerEntityType, m.KillerType) &&
                      m.VictimType == WildcardCharacter &&
                      m.DamageType == WildcardCharacter,

            (m, d) => m.KillerType == WildcardCharacter &&
                      MatchesCombatEntityType(d.VictimEntityType, m.VictimType) &&
                      m.DamageType == WildcardCharacter,

            (m, d) => m.KillerType == WildcardCharacter &&
                      m.VictimType == WildcardCharacter &&
                      MatchesDamageType(d.DamageType, m.DamageType),

            (m, d) => m.KillerType == WildcardCharacter &&
                      m.VictimType == WildcardCharacter &&
                      m.DamageType == WildcardCharacter
        };

        #endregion

        #region Hooks

        private void Init()
        {
            _instance = this;

            permission.RegisterPermission(CanSeePermission, this);

            _configuration = Config.ReadObject<PluginConfiguration>();
            _configuration.LoadDefaults();
            Config.WriteObject(_configuration);

            _enemyPrefabs.Load();
            _weaponPrefabs.Load();
            _combatEntityTypes.Load();
        }

        private void OnEntityTakeDamage(BaseCombatEntity victimEntity, HitInfo hitInfo)
        {
            if (!(victimEntity is BasePlayer))
                return;

            // Don't track bleeding
            if (victimEntity.lastDamage == DamageType.Bleeding)
                return;

            var userId = victimEntity.ToPlayer().userID;

            _previousAttack[userId] = new AttackInfo
            {
                HitInfo = hitInfo,
                Attacker = victimEntity.lastAttacker ?? hitInfo?.Initiator,
                DamageType = victimEntity.lastDamage
            };
        }

        private void OnEntityDeath(BaseCombatEntity victimEntity, HitInfo hitInfo)
        {
            // Ignore - there is no victim for some reason
            if (victimEntity == null)
                return;

            // Try to avoid error when entity was destroyed
            if (victimEntity.gameObject == null)
                return;

            var data = new DeathData
            {
                VictimEntity = victimEntity,
                KillerEntity = victimEntity.lastAttacker ?? hitInfo?.Initiator,
                VictimEntityType = GetCombatEntityType(victimEntity),
                KillerEntityType = GetCombatEntityType(victimEntity.lastAttacker),
                DamageType = victimEntity.lastDamage,
                HitInfo = hitInfo
            };

            // Handle inconsistencies/exceptions
            HandleInconsistencies(ref data);

#if DEBUG
            LogDebug("[DEATHNOTES DEBUG]");
            LogDebug($"VictimEntity: {data.VictimEntity?.GetType().Name ?? "NULL"} / {data.VictimEntity?.ShortPrefabName ?? "NULL"} / {data.VictimEntity?.PrefabName ?? "NULL"}");
            LogDebug($"KillerEntity: {data.KillerEntity?.GetType().Name ?? "NULL"} / {data.KillerEntity?.ShortPrefabName ?? "NULL"} / {data.KillerEntity?.PrefabName ?? "NULL"}");
            LogDebug($"VictimEntityType: {data.VictimEntityType}");
            LogDebug($"KillerEntityType: {data.KillerEntityType}");
            LogDebug($"DamageType: {data.DamageType}");
            LogDebug($"Bodypart: {GetCustomizedBodypartName(data.HitInfo)}");
            LogDebug($"Weapon: {hitInfo?.WeaponPrefab?.ShortPrefabName ?? "NULL"}");
#endif

            // Ignore deaths of other entities
            if (data.KillerEntityType == CombatEntityType.Other || data.VictimEntityType == CombatEntityType.Other)
                return;

            // Ignore deaths which don't involve players or the helicopter which usually does not track a player as killer
            if (data.VictimEntityType != CombatEntityType.Player && data.KillerEntityType != CombatEntityType.Player && data.VictimEntityType != CombatEntityType.Helicopter)
                return;

            // Populate the variables in the message
            string message = PopulateMessageVariables(
                // Find the best matching death message for this death
                GetDeathMessage(data),
                data
            );

            if (message == null)
                return;

            object hookResult = Interface.Call("OnDeathNotice", data.ToDictionary(), message);

            if (hookResult?.Equals(false) ?? false)
                return;

            if (_configuration.ShowInChat)
            {
                foreach (var player in BasePlayer.activePlayerList)
                {
                    if (_configuration.RequirePermission && !permission.UserHasPermission(player.UserIDString, CanSeePermission))
                        continue;

                    if (_configuration.MessageRadius != -1 && player.Distance(data.VictimEntity) > _configuration.MessageRadius)
                        continue;

                    Player.Reply(
                        player,
                        _configuration.ChatFormat.Replace("{message}", message),
                        ulong.Parse(_configuration.ChatIcon)
                    );
                }
            }

            if (_configuration.ShowInConsole)
                Puts(StripRichText(message));
        }

        private void OnFlameThrowerBurn(FlameThrower flameThrower, BaseEntity baseEntity)
        {
            var flame = baseEntity.gameObject.AddComponent<Flame>();
            flame.Source = Flame.FlameSource.Flamethrower;
            flame.SourceEntity = flameThrower;
            flame.Initiator = flameThrower.GetOwnerPlayer();
        }

        private void OnFlameExplosion(FlameExplosive explosive, BaseEntity baseEntity)
        {
            var flame = baseEntity.gameObject.AddComponent<Flame>();
            flame.Source = Flame.FlameSource.IncendiaryProjectile;
            flame.SourceEntity = explosive;
            flame.Initiator = explosive.creatorEntity;
        }

        private void OnFireBallSpread(FireBall fireBall, BaseEntity newFire)
        {
            var flame = fireBall.GetComponent<Flame>();
            if (flame != null)
            {
                var newFlame = newFire.gameObject.AddComponent<Flame>();
                newFlame.Source = flame.Source;
                newFlame.SourceEntity = flame.SourceEntity;
                newFlame.Initiator = flame.Initiator;
            }
        }

        private void OnFireBallDamage(FireBall fireBall, BaseCombatEntity target, HitInfo hitInfo) => hitInfo.Initiator = fireBall;

        #endregion

        #region Death Messages

        private string GetDeathMessage(DeathData data)
        {
            foreach (var matchingStage in _messageMatchingStages)
            {
                var match = _configuration.Translations.Messages.Find(m => matchingStage.Invoke(m, data));

                if (match != null)
                    return match.Messages.GetRandom((uint)DateTime.UtcNow.Millisecond);
            }

            return null;
        }

        private string PopulateMessageVariables(string message, DeathData data)
        {
            if (string.IsNullOrEmpty(message))
                return null;

            var replacements = new Dictionary<string, string>
            {
                ["victim"] = GetCustomizedEntityName(data.VictimEntity, data.VictimEntityType)
            };

            if (data.KillerEntityType != CombatEntityType.None)
            {
                replacements.Add("killer", GetCustomizedEntityName(data.KillerEntity, data.KillerEntityType));
                replacements.Add("bodypart", GetCustomizedBodypartName(data.HitInfo));

                if (data.KillerEntity != null)
                {
                    var distance = data.KillerEntity.Distance(data.VictimEntity);
                    replacements.Add("distance", GetDistance(distance, _configuration.UseMetricDistance));
                }

                if (data.KillerEntityType == CombatEntityType.Player)
                {
                    replacements.Add("hp", data.KillerEntity.Health().ToString("#0.#"));
                    replacements.Add("weapon", GetCustomizedWeaponName(data));
                    replacements.Add("attachments", string.Join(", ", GetCustomizedAttachmentNames(data.HitInfo)));
                }
                else if (data.KillerEntityType == CombatEntityType.Turret
                    || data.KillerEntityType == CombatEntityType.Lock
                    || data.KillerEntityType == CombatEntityType.Trap)
                {
                    replacements.Add("owner",
                        covalence.Players.FindPlayerById(data.KillerEntity.OwnerID.ToString())?.Name ?? "unknown owner"
                    ); // TODO: Work on the potential unknown owner case
                }
            }

            message = InsertPlaceholderValues(message, replacements);

            replacements = null;
            return message;
        }

        private struct DeathData
        {
            public CombatEntityType VictimEntityType { get; set; }
            [JsonIgnore] public BaseCombatEntity VictimEntity { get; set; }

            public CombatEntityType KillerEntityType { get; set; }
            [JsonIgnore] public BaseEntity KillerEntity { get; set; }

            public DamageType DamageType { get; set; }
            [JsonIgnore] public HitInfo HitInfo { get; set; }

            public Dictionary<string, object> ToDictionary() => new Dictionary<string, object>
            {
                ["VictimEntityType"] = VictimEntityType,
                ["VictimEntity"] = VictimEntity,
                ["KillerEntityType"] = KillerEntityType,
                ["KillerEntity"] = KillerEntity,
                ["DamageType"] = DamageType,
                ["HitInfo"] = HitInfo
            };
        }

        #endregion

        #region Entity Identification

        private CombatEntityType GetCombatEntityType(BaseEntity entity)
        {
            if (entity == null)
                return CombatEntityType.None;

            if (_combatEntityTypes.Contents != null)
            {

                if (_combatEntityTypes.Contents.ContainsKey(entity.GetType().Name))
                    return _combatEntityTypes.Contents[entity.GetType().Name];

                if (_combatEntityTypes.Contents.ContainsKey(entity.ShortPrefabName))
                    return _combatEntityTypes.Contents[entity.ShortPrefabName];

            }

            if (entity is BaseOven)
                return CombatEntityType.HeatSource;

            if (entity is SimpleBuildingBlock)
                return CombatEntityType.ExternalWall;

            if (entity is BaseAnimalNPC)
                return CombatEntityType.Animal;

            if (entity is BaseTrap)
                return CombatEntityType.Trap;

            if (entity is Barricade)
                return CombatEntityType.Barricade;

            if (entity is IOEntity)
                return CombatEntityType.Trap;

            return CombatEntityType.Other;
        }

        private string GetCustomizedEntityName(BaseEntity entity, CombatEntityType combatEntityType)
        {
            var name = GetEntityName(entity, combatEntityType);

            if (string.IsNullOrEmpty(name))
                return null;

            // Don't load player names into config
            if (combatEntityType == CombatEntityType.Player)
                return name;

            if (!_configuration.Translations.Names.ContainsKey(name))
            {
                _configuration.Translations.Names.Add(name, name);
                Config.WriteObject(_configuration);
            }

            return _configuration.Translations.Names[name];
        }

        private string GetEntityName(BaseEntity entity, CombatEntityType combatEntityType)
        {
            // Entity may be null for helicopter or bradley, see HandleExceptions(...)
            if (entity == null &&
                combatEntityType != CombatEntityType.Helicopter &&
                combatEntityType != CombatEntityType.Bradley)
                return null;

            switch (combatEntityType)
            {
                case CombatEntityType.Player:
                    return StripRichText(entity.ToPlayer().displayName);

                case CombatEntityType.Scientist:
                case CombatEntityType.Murderer:
                case CombatEntityType.Scarecrow:
                case CombatEntityType.ZombieNPC:
                    var name = entity.ToPlayer()?.displayName;

                    if (!string.IsNullOrEmpty(name) && name != entity.ToPlayer()?.userID.ToString())
                    {
                        return name;   
                    }

                    if (!_enemyPrefabs.Contents.ContainsKey(entity.ShortPrefabName))
                    {
                        return combatEntityType.ToString();
                    }
                    
                    break;

                case CombatEntityType.TunnelDweller:
                    return "Tunnel Dweller";
                
                case CombatEntityType.UnderwaterDweller:
                    return "Underwater Dweller";
                
                case CombatEntityType.Helicopter:
                    return "Helicopter";
                
                case CombatEntityType.Bradley:
                    return "Bradley APC";

                case CombatEntityType.Sentry:
                    return "Sentry";

                case CombatEntityType.Fire:
                    return entity.creatorEntity?.ToPlayer()?.displayName ?? "Fire";
            }

            if (_enemyPrefabs.Contents.ContainsKey(entity.ShortPrefabName))
                return _enemyPrefabs.Contents[entity.ShortPrefabName];

            return HumanizePascalCase(entity.GetType().Name);
        }

        internal enum CombatEntityType
        {
            Helicopter = 0,
            Bradley = 1,
            Animal = 2,
            Murderer = 3,
            Scientist = 4,
            Scarecrow = 16,
            TunnelDweller = 17,
            UnderwaterDweller = 18,
            ZombieNPC = 19,
            Player = 5,
            Trap = 6,
            Turret = 7,
            Barricade = 8,
            ExternalWall = 9,
            HeatSource = 10,
            Fire = 11,
            Lock = 12,
            Sentry = 13,
            Other = 14,
            None = 15
        }

        #endregion

        #region Workarounds and Inconsistency Handling

        private void HandleInconsistencies(ref DeathData data)
        {
            // Deaths of other entity types are not of interest and might cause errors
            if (data.VictimEntityType == CombatEntityType.Other)
                return;

            if (data.KillerEntity is FireBall)
                data.DamageType = DamageType.Heat;

            // If the killer entity is null, but a weapon is given, we might be able to fall back to the parent entity of that weapon
            // Notably for the auto turret after the changes it has had
            if (data.KillerEntity == null && data.HitInfo?.Weapon != null)
            {
                data.KillerEntity = data.HitInfo.Weapon.GetParentEntity();
                data.KillerEntityType = GetCombatEntityType(data.KillerEntity);
            }

            // Get previous attacker when bleeding out
            if (data.VictimEntityType == CombatEntityType.Player && (data.DamageType == DamageType.Bleeding || data.HitInfo == null))
            {
                var userId = data.VictimEntity.ToPlayer().userID;

                if (_previousAttack.ContainsKey(userId))
                {
                    var attack = _previousAttack[userId];
                    data.KillerEntity = attack.Attacker;
                    data.KillerEntityType = GetCombatEntityType(data.KillerEntity);

                    // Restore previous hitInfo for weapon determination
                    if (attack.HitInfo != null)
                        data.HitInfo = attack.HitInfo;

                    // Use previous damagetype if this is a selfinflicted death,
                    // so falling to death etc. is also shown when wounded and bleeding out
                    if (data.KillerEntity == null || data.KillerEntity == data.VictimEntity)
                        data.DamageType = attack.DamageType;
                    else
                        data.DamageType = DamageType.Bleeding;
                }
            }

            if (data.KillerEntityType != CombatEntityType.None && data.KillerEntity != null)
            {
                // Workaround for deaths caused by flamethrower or rocket fire 
                var flame = data.KillerEntity.gameObject.GetComponent<Flame>();
                if (flame != null && flame.Initiator != null)
                {
                    data.KillerEntity = flame.Initiator;
                    data.KillerEntityType = CombatEntityType.Player;
                    return;
                }
            }

            // Bradley kill with main cannon
            if (data.HitInfo?.WeaponPrefab?.ShortPrefabName == "maincannonshell")
            {
                data.KillerEntityType = CombatEntityType.Bradley;
                return;
            }

            if (data.HitInfo?.WeaponPrefab?.ShortPrefabName?.StartsWith("rocket_heli") ?? false)
            {
                data.KillerEntityType = CombatEntityType.Helicopter;
                return;
            }
            
            // Vehicle Kills
            if (data.KillerEntityType == CombatEntityType.Player
                && data.DamageType == DamageType.Generic
                && data.KillerEntity.ToPlayer().isMounted)
            {
                data.DamageType = DamageType.Collision;
                return;
            }
        }

        private struct AttackInfo
        {
            public HitInfo HitInfo { get; set; }
            public DamageType DamageType { get; set; }
            public BaseEntity Attacker { get; set; }
        }

        private class Flame : MonoBehaviour
        {
            public FlameSource Source { get; set; }
            public BaseEntity SourceEntity { get; set; }
            public BaseEntity Initiator { get; set; }

            public enum FlameSource
            {
                Flamethrower,
                IncendiaryProjectile
            }
        }

        #endregion

        #region Weapons

        private string GetCustomizedWeaponName(DeathData deathData)
        {
            var name = GetWeaponName(deathData);

            if (string.IsNullOrEmpty(name))
                return null;

            if (!_configuration.Translations.Weapons.ContainsKey(name))
            {
                _configuration.Translations.Weapons.Add(name, name);
                Config.WriteObject(_configuration);
            }

            return _configuration.Translations.Weapons[name];
        }

        private string GetWeaponName(DeathData deathData)
        {
            if (deathData.HitInfo == null)
                return null;

            Item item = deathData.HitInfo.Weapon?.GetItem();
            /*var parentEntity = hitInfo.Weapon?.GetParentEntity();
            Item item = null;

            if (parentEntity is BasePlayer)
            {
                (parentEntity as BasePlayer).inventory.FindItemUID(hitInfo.Weapon.ownerItemUID);
            }
            else if (parentEntity is ContainerIOEntity)
            {
                (parentEntity as ContainerIOEntity).inventory.FindItemByUID(hitInfo.Weapon.ownerItemUID);
            }*/

            if (item != null)
                return item.info.displayName.english;

            var prefab = deathData.HitInfo.Initiator?.GetComponent<Flame>()?.SourceEntity?.ShortPrefabName ??
                         deathData.HitInfo.WeaponPrefab?.ShortPrefabName;

            if (prefab != null)
            {
                if (_weaponPrefabs.Contents.ContainsKey(prefab))
                    return _weaponPrefabs.Contents[prefab];

                return prefab;
            }
            
            // Vehicles are the only thing we classify as a weapon, while not being classified as such by the game.
            // TODO: Having this here kinda sucks, make this better.
            if (deathData.DamageType == DamageType.Collision)
            {
                return "Vehicle";
            }

            return null;
        }

        private string[] GetCustomizedAttachmentNames(HitInfo info)
        {
            var items = info?.Weapon?.GetItem()?.contents?.itemList;

            if (items == null)
            {
                return Array.Empty<string>();   
            }

            return items.Select(i => GetCustomizedAttachmentName(i.info.displayName.english)).ToArray();
        }

        private string GetCustomizedAttachmentName(string name)
        {
            if (!_configuration.Translations.Attachments.ContainsKey(name))
            {
                _configuration.Translations.Attachments.Add(name, name);
                Config.WriteObject(_configuration);
            }

            return _configuration.Translations.Attachments[name];
        }

        #endregion

        #region Bodyparts

        private string GetCustomizedBodypartName(HitInfo hitInfo)
        {
            var name = GetBodypartName(hitInfo);

            if (string.IsNullOrEmpty(name))
                return null;

            if (!_configuration.Translations.Bodyparts.ContainsKey(name))
            {
                _configuration.Translations.Bodyparts.Add(name, name);
                Config.WriteObject(_configuration);
            }

            return _configuration.Translations.Bodyparts[name];
        }

        private string GetBodypartName(HitInfo hitInfo)
        {
            var hitArea = hitInfo?.boneArea ?? (HitArea)(-1);
            return (int)hitArea == -1 ? "Body" : hitArea.ToString();
        }

        #endregion

        #region Helper

#if DEBUG
        private static void LogDebug(string text)
        {
            if (BasePlayer.activePlayerList.Count >= 1)
            {
                BasePlayer.activePlayerList[0].ConsoleMessage($"<color=orange>{text}</color>");
            }
        }
#endif

        private static string GetDistance(float meters, bool useMetric)
        {
            double value = Math.Round(useMetric ? meters : meters * 3.28f, 1);
            string unit = value == 1
                ? _instance.lang.GetMessage("Distance Unit Singular", _instance)
                : _instance.lang.GetMessage("Distance Unit Plural", _instance);

            return $"{value} {unit}";
        }

        private static string ApplyVariableFormat(string text, string variableName)
        {
            if (_instance._configuration.VariableFormats.ContainsKey(variableName))
            {
                var format = _instance._configuration.VariableFormats[variableName];
                text = format.Replace("{value}", text);
            }

            return text;
        }

        private static string InsertPlaceholderValues(string text, Dictionary<string, string> values)
        {
            foreach (var kvp in values)
            {
                string value = ApplyVariableFormat(kvp.Value, kvp.Key);
                if (string.IsNullOrEmpty(kvp.Value))
                {
                    text = text.Replace($"{{{kvp.Key}}}", string.Empty);
                }
                else if (_instance._configuration.VariableColors.ContainsKey(kvp.Key))
                {
                    var color = _instance._configuration.VariableColors[kvp.Key];
                    text = text.Replace($"{{{kvp.Key}}}", $"<color={color}>{value}</color>");
                    color = null;
                }
                else
                {
                    text = text.Replace($"{{{kvp.Key}}}", value);
                }
            }

            return text;
        }

        private static string HumanizePascalCase(string text)
        {
            if (string.IsNullOrEmpty(text))
                return string.Empty;

            var sb = new StringBuilder();

            foreach (char c in text)
            {
                if (char.IsUpper(c) && sb.Length != 0 && !char.IsUpper(sb[sb.Length - 1]))
                    sb.Append(" ");

                sb.Append(c);
            }

            return sb.ToString();
        }

        private string StripRichText(string text)
        {
            if (string.IsNullOrEmpty(text))
                return string.Empty;

            text = _colorTagRegex.Replace(text, string.Empty);
            text = _sizeTagRegex.Replace(text, string.Empty);

            foreach (var richTextLiteral in _richTextLiterals)
                text = text.Replace(richTextLiteral, string.Empty, StringComparison.InvariantCulture);

            return text;
        }

        private static bool MatchesCombatEntityType(CombatEntityType combatEntityType, string text)
        {
            if (combatEntityType == CombatEntityType.None && text == "-")
                return true;

            return combatEntityType.ToString().Equals(text, StringComparison.InvariantCulture);
        }

        private static bool MatchesDamageType(DamageType damageType, string text)
        {
            return damageType.ToString().Equals(text, StringComparison.InvariantCulture);
        }

        #endregion

        #region Configuration

        protected override void LoadDefaultMessages()
        {
            lang.RegisterMessages(new Dictionary<string, string>
            {
                ["Distance Unit Singular"] = "meter",
                ["Distance Unit Plural"] = "meters"
            }, this);
        }

        protected override void LoadDefaultConfig() => PrintWarning("Generating new configuration file...");

        private sealed class PluginConfiguration
        {
            [JsonProperty("Translations")]
            public Translation Translations = new Translation();

            [JsonProperty("Variable Formats")]
            public Dictionary<string, string> VariableFormats = new Dictionary<string, string>
            {
                ["attachments"] = " ({value})"
            };

            [JsonProperty("Variable Colors")]
            public Dictionary<string, string> VariableColors = new Dictionary<string, string>
            {
                ["killer"] = "#C4FF00",
                ["victim"] = "#C4FF00",
                ["weapon"] = "#C4FF00",
                ["attachments"] = "#C4FF00",
                ["distance"] = "#C4FF00",
                ["owner"] = "#C4FF00"
            };

            [JsonProperty("Chat Format")]
            public string ChatFormat = "<color=#838383>[<color=#80D000>DeathNotes</color>] {message}</color>";

            [JsonProperty("Chat Icon (SteamID)")]
            public string ChatIcon = "76561198077847390";

            [JsonProperty("Show Kills in Console")]
            public bool ShowInConsole = true;

            [JsonProperty("Show Kills in Chat")]
            public bool ShowInChat = true;

            [JsonProperty("Message Broadcast Radius (in meters)")]
            public int MessageRadius = -1;

            [JsonProperty("Use Metric Distance")]
            public bool UseMetricDistance = true;

            [JsonProperty("Require Permission (deathnotes.cansee)")]
            public bool RequirePermission = false;

            public void LoadDefaults()
            {
                if (Translations.Messages == null)
                {
                    var defaults = new RemoteConfiguration<List<DeathMessage>>("DefaultMessages");
                    defaults.Load(success =>
                    {
                        if (success)
                        {
                            Translations.Messages = defaults.Contents;
                            _instance.Config.WriteObject(this);
                        }
                    });
                }
            }

            public class DeathMessage
            {
                public string KillerType { get; set; }
                public string VictimType { get; set; }
                public string DamageType { get; set; }

                public string[] Messages { get; set; }

                protected bool Equals(DeathMessage other) => string.Equals(KillerType, other.KillerType) &&
                                                             string.Equals(VictimType, other.VictimType) &&
                                                             string.Equals(DamageType, other.DamageType);
            }

            public class Translation
            {
                [JsonProperty("Death Messages")]
                public List<DeathMessage> Messages;

                [JsonProperty("Names")]
                public Dictionary<string, string> Names = new Dictionary<string, string>();

                [JsonProperty("Bodyparts")]
                public Dictionary<string, string> Bodyparts = new Dictionary<string, string>();

                [JsonProperty("Weapons")]
                public Dictionary<string, string> Weapons = new Dictionary<string, string>();

                [JsonProperty("Attachments")]
                public Dictionary<string, string> Attachments = new Dictionary<string, string>();
            }
        }

        internal sealed class RemoteConfiguration<T>
        {
            private const string Host = "http://files.laserhydra.com/config/DeathNotes/v6.3.6/";

            private readonly string _file;

            public RemoteConfiguration(string file)
            {
                _file = file;
            }

            public T Contents { get; private set; }
            private string ExactUrl => Host + _file;

            public void Load(Action<bool> callback = null)
            {
                _instance.webrequest.Enqueue(ExactUrl, string.Empty, (code, response) =>
                {
                    try
                    {
                        if (!IsSuccessStatusCode(code))
                            throw new Exception($"Status code indicates failure. Code: {code}");

                        Contents = JsonConvert.DeserializeObject<T>(response);
                        callback?.Invoke(true);

                        Interface.Oxide.DataFileSystem.WriteObject($"{nameof(DeathNotes)}/{_file}", Contents);
                    }
                    catch (Exception ex)
                    {
                        if (Interface.Oxide.DataFileSystem.ExistsDatafile($"{nameof(DeathNotes)}/{_file}"))
                        {
                            Contents = Interface.Oxide.DataFileSystem.ReadObject<T>($"{nameof(DeathNotes)}/{_file}");

                            _instance.PrintWarning($"Could not load remote config '{_file}'. The plugin will be using the previously downloaded file.");

                            callback?.Invoke(true);
                        }
                        else
                        {
                            _instance.PrintError($"Could not load remote config '{_file}'. The plugin will not work properly. Please check whether you can access {ExactUrl} via your browser. If you can, please check the FAQ on how to solve this.");
                            _instance.PrintError($"[Code {code}] {ex.GetType().Name}: {ex.Message}");
                            _instance.PrintError($"Response: {response}");

                            callback?.Invoke(false);
                        }
                    }
                }, _instance);
            }

            private bool IsSuccessStatusCode(int code) => code >= 200 && code < 300;
        }

        #endregion
    }
}