source: TFP-WebServer/WebServer/src/WebAPI/APIs/ServerState/ServerStats.cs

using JetBrains.Annotations;
using Utf8Json;
using Webserver.LiveData;
using Webserver.Permissions;

namespace Webserver.WebAPI.APIs.ServerState {
        [UsedImplicitly]
        public class ServerStats : AbsRestApi {
                private static readonly byte[] jsonKeyGameTime = JsonWriter.GetEncodedPropertyNameWithBeginObject ("gameTime");
                private static readonly byte[] jsonKeyPlayers = JsonWriter.GetEncodedPropertyNameWithPrefixValueSeparator ("players");
                private static readonly byte[] jsonKeyHostiles = JsonWriter.GetEncodedPropertyNameWithPrefixValueSeparator ("hostiles");
                private static readonly byte[] jsonKeyAnimals = JsonWriter.GetEncodedPropertyNameWithPrefixValueSeparator ("animals");
                

                protected override void HandleRestGet (RequestContext _context) {
                        PrepareEnvelopedResult (out JsonWriter writer);
                        
                        writer.WriteRaw (jsonKeyGameTime);
                        (int days, int hours, int minutes) = GameUtils.WorldTimeToElements (GameManager.Instance.World.worldTime);
                        JsonCommons.WriteGameTimeObject (ref writer, days, hours, minutes);

                        writer.WriteRaw (jsonKeyPlayers);
                        writer.WriteInt32 (GameManager.Instance.World.Players.Count);
                        
                        writer.WriteRaw (jsonKeyHostiles);
                        writer.WriteInt32 (Hostiles.Instance.GetCount ());
                        
                        writer.WriteRaw (jsonKeyAnimals);
                        writer.WriteInt32 (Animals.Instance.GetCount ());
                        
                        writer.WriteEndObject ();

                        SendEnvelopedResult (_context, ref writer);
                }

                public override int DefaultPermissionLevel () => AdminWebModules.PermissionLevelGuest;
        }
}