Reorganize commands into the Commands folder (#2679)

* Reorganize commands into the Commands folder

* RIDER

Content.Server/Commands/Damage/DamageFlagCommand.cs

@@ -0,0 +1,116 @@
+#nullable enable
+using System;
+using System.Diagnostics.CodeAnalysis;
+using Content.Shared.GameObjects.Components.Damage;
+using Robust.Server.Interfaces.Console;
+using Robust.Server.Interfaces.Player;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.IoC;
+
+namespace Content.Server.Commands.Damage
+{
+    public abstract class DamageFlagCommand : IClientCommand
+    {
+        public abstract string Command { get; }
+        public abstract string Description { get; }
+        public abstract string Help { get; }
+
+        public abstract void Execute(IConsoleShell shell, IPlayerSession? player, string[] args);
+
+        public bool TryGetEntity(
+            IConsoleShell shell,
+            IPlayerSession? player,
+            string[] args,
+            bool adding,
+            [NotNullWhen(true)] out IEntity? entity,
+            out DamageFlag flag,
+            [NotNullWhen(true)] out IDamageableComponent? damageable)
+        {
+            entity = null;
+            flag = DamageFlag.None;
+            damageable = null;
+
+            IEntity? parsedEntity;
+            DamageFlag parsedFlag;
+            IDamageableComponent? parsedDamageable;
+
+            switch (args.Length)
+            {
+                case 1:
+                {
+                    if (player == null)
+                    {
+                        shell.SendText(player, "An entity needs to be specified when the command isn't used by a player.");
+                        return false;
+                    }
+
+                    if (player.AttachedEntity == null)
+                    {
+                        shell.SendText(player, "An entity needs to be specified when you aren't attached to an entity.");
+                        return false;
+                    }
+
+                    if (!Enum.TryParse(args[0], true, out parsedFlag))
+                    {
+                        shell.SendText(player, $"{args[0]} is not a valid damage flag.");
+                        return false;
+                    }
+
+                    parsedEntity = player.AttachedEntity;
+                    flag = parsedFlag;
+                    break;
+                }
+                case 2:
+                {
+                    if (!EntityUid.TryParse(args[0], out var id))
+                    {
+                        shell.SendText(player, $"{args[0]} isn't a valid entity id.");
+                        return false;
+                    }
+
+                    var entityManager = IoCManager.Resolve<IEntityManager>();
+                    if (!entityManager.TryGetEntity(id, out parsedEntity))
+                    {
+                        shell.SendText(player, $"No entity found with id {id}.");
+                        return false;
+                    }
+
+                    if (!Enum.TryParse(args[1], true, out parsedFlag))
+                    {
+                        shell.SendText(player, $"{args[1]} is not a valid damage flag.");
+                        return false;
+                    }
+
+                    break;
+                }
+                default:
+                    shell.SendText(player, Help);
+                    return false;
+            }
+
+            if (!parsedEntity.TryGetComponent(out parsedDamageable))
+            {
+                shell.SendText(player, $"Entity {parsedEntity.Name} doesn't have a {nameof(IDamageableComponent)}");
+                return false;
+            }
+
+            if (parsedDamageable.HasFlag(parsedFlag) && adding)
+            {
+                shell.SendText(player, $"Entity {parsedEntity.Name} already has damage flag {parsedFlag}.");
+                return false;
+            }
+            else if (!parsedDamageable.HasFlag(parsedFlag) && !adding)
+            {
+                shell.SendText(player, $"Entity {parsedEntity.Name} doesn't have damage flag {parsedFlag}.");
+                return false;
+            }
+
+            entity = parsedEntity;
+            flag = parsedFlag;
+            damageable = parsedDamageable;
+
+            return true;
+        }
+    }
+}