source: TFP-WebServer/WebServer/src/WebAPI/APIs/WorldState/Bloodmoon.cs@ 470

using JetBrains.Annotations;
using Utf8Json;

namespace Webserver.WebAPI.APIs.WorldState {
        [UsedImplicitly]
        public class Bloodmoon : AbsRestApi {
                private static readonly byte[] jsonKeyGameTime = JsonWriter.GetEncodedPropertyNameWithBeginObject ("gameTime");
                private static readonly byte[] jsonKeyBloodmoonActive = JsonWriter.GetEncodedPropertyNameWithPrefixValueSeparator ("bloodmoonActive");
                private static readonly byte[] jsonKeyNextBloodmoon = JsonWriter.GetEncodedPropertyNameWithPrefixValueSeparator ("nextBloodmoon");
                private static readonly byte[] jsonKeyNextBloodmoonEnd = JsonWriter.GetEncodedPropertyNameWithPrefixValueSeparator ("nextBloodmoonEnd");

                protected override void HandleRestGet (RequestContext _context) {
                        ulong currentWorldTime = GameManager.Instance.World.worldTime;
                        (int currentDay, int currentHour, int currentMinut) = GameUtils.WorldTimeToElements (currentWorldTime);

                        int nextBloodmoonDay = GameStats.GetInt (EnumUtils.Parse<EnumGameStats> (nameof (EnumGameStats.BloodMoonDay)));

                        (int duskHour, int dawnHour) duskDawnHours = GameUtils.CalcDuskDawnHours (GamePrefs.GetInt (EnumUtils.Parse<EnumGamePrefs> (nameof (EnumGamePrefs.DayLightLength))));

                        PrepareEnvelopedResult (out JsonWriter writer);
                        
                        writer.WriteRaw (jsonKeyGameTime);
                        JsonCommons.WriteGameTimeObject (ref writer, currentDay, currentHour, currentMinut);

                        writer.WriteRaw (jsonKeyBloodmoonActive);
                        writer.WriteBoolean (GameUtils.IsBloodMoonTime (currentWorldTime, duskDawnHours, nextBloodmoonDay));
                        
                        writer.WriteRaw (jsonKeyNextBloodmoon);
                        JsonCommons.WriteGameTimeObject (ref writer, nextBloodmoonDay, duskDawnHours.duskHour, 0);
                        
                        writer.WriteRaw (jsonKeyNextBloodmoonEnd);
                        JsonCommons.WriteGameTimeObject (ref writer, nextBloodmoonDay + 1, duskDawnHours.dawnHour, 0);
                        
                        writer.WriteEndObject ();

                        SendEnvelopedResult (_context, ref writer);
                }
        }
}