source: binary-improvements/MapRendering/API/GetPlayersOnline.cs

using System.Collections.Generic;
using AllocsFixes.PersistentData;
using JetBrains.Annotations;
using Utf8Json;
using Webserver;
using Webserver.WebAPI;

namespace AllocsFixes.WebAPIs {
        [UsedImplicitly]
        public class GetPlayersOnline : AbsWebAPI {
                private static readonly byte[] jsonKeySteamId = JsonWriter.GetEncodedPropertyNameWithBeginObject ("steamid");
                private static readonly byte[] jsonKeyCrossPlatformId = JsonWriter.GetEncodedPropertyNameWithPrefixValueSeparator ("crossplatformid");
                private static readonly byte[] jsonKeyEntityId = JsonWriter.GetEncodedPropertyNameWithPrefixValueSeparator ("entityid");
                private static readonly byte[] jsonKeyIp = JsonWriter.GetEncodedPropertyNameWithPrefixValueSeparator ("ip");
                private static readonly byte[] jsonKeyName = JsonWriter.GetEncodedPropertyNameWithPrefixValueSeparator ("name");
                private static readonly byte[] jsonKeyOnline = JsonWriter.GetEncodedPropertyNameWithPrefixValueSeparator ("online");
                private static readonly byte[] jsonKeyPosition = JsonWriter.GetEncodedPropertyNameWithPrefixValueSeparator ("position");

                private static readonly byte[] jsonKeyLevel = JsonWriter.GetEncodedPropertyNameWithPrefixValueSeparator ("level");
                private static readonly byte[] jsonKeyHealth = JsonWriter.GetEncodedPropertyNameWithPrefixValueSeparator ("health");
                private static readonly byte[] jsonKeyStamina = JsonWriter.GetEncodedPropertyNameWithPrefixValueSeparator ("stamina");
                private static readonly byte[] jsonKeyZombieKills = JsonWriter.GetEncodedPropertyNameWithPrefixValueSeparator ("zombiekills");
                private static readonly byte[] jsonKeyPlayerKills = JsonWriter.GetEncodedPropertyNameWithPrefixValueSeparator ("playerkills");
                private static readonly byte[] jsonKeyPlayerDeaths = JsonWriter.GetEncodedPropertyNameWithPrefixValueSeparator ("playerdeaths");
                private static readonly byte[] jsonKeyScore = JsonWriter.GetEncodedPropertyNameWithPrefixValueSeparator ("score");

                private static readonly byte[] jsonKeyTotalPlaytime = JsonWriter.GetEncodedPropertyNameWithPrefixValueSeparator ("totalplaytime");
                private static readonly byte[] jsonKeyLastOnline = JsonWriter.GetEncodedPropertyNameWithPrefixValueSeparator ("lastonline");
                private static readonly byte[] jsonKeyPing = JsonWriter.GetEncodedPropertyNameWithPrefixValueSeparator ("ping");

                public override void HandleRequest (RequestContext _context) {
                        JsonWriter writer = new JsonWriter ();
                        
                        writer.WriteBeginArray ();
                        
                        bool first = true;

                        World w = GameManager.Instance.World;
                        foreach (KeyValuePair<int, EntityPlayer> current in w.Players.dict) {
                                ClientInfo ci = ConnectionManager.Instance.Clients.ForEntityId (current.Key);
                                Player player = PersistentContainer.Instance.Players.GetByInternalId (ci.InternalId);

                                if (!first) {
                                        writer.WriteValueSeparator ();
                                }

                                first = false;
                                
                                writer.WriteRaw (jsonKeySteamId);
                                writer.WriteString (ci.PlatformId.CombinedString);
                                
                                writer.WriteRaw (jsonKeyCrossPlatformId);
                                writer.WriteString (ci.CrossplatformId?.CombinedString ?? "");
                                
                                writer.WriteRaw (jsonKeyEntityId);
                                writer.WriteInt32 (ci.entityId);
                                
                                writer.WriteRaw (jsonKeyIp);
                                writer.WriteString (ci.ip);
                                
                                writer.WriteRaw (jsonKeyName);
                                writer.WriteString (current.Value.EntityName);
                                
                                writer.WriteRaw (jsonKeyOnline);
                                writer.WriteBoolean (true);
                                
                                writer.WriteRaw (jsonKeyPosition);
                                JsonCommons.WriteVector3I (ref writer, new Vector3i (current.Value.GetPosition ()));
                                
                                writer.WriteRaw (jsonKeyLevel);
                                writer.WriteSingle (player?.Level ?? -1);
                                
                                writer.WriteRaw (jsonKeyHealth);
                                writer.WriteInt32 (current.Value.Health);
                                
                                writer.WriteRaw (jsonKeyStamina);
                                writer.WriteSingle (current.Value.Stamina);
                                
                                writer.WriteRaw (jsonKeyZombieKills);
                                writer.WriteInt32 (current.Value.KilledZombies);
                                
                                writer.WriteRaw (jsonKeyPlayerKills);
                                writer.WriteInt32 (current.Value.KilledPlayers);
                                
                                writer.WriteRaw (jsonKeyPlayerDeaths);
                                writer.WriteInt32 (current.Value.Died);
                                
                                writer.WriteRaw (jsonKeyScore);
                                writer.WriteInt32 (current.Value.Score);

                                writer.WriteRaw (jsonKeyTotalPlaytime);
                                writer.WriteInt64 (player?.TotalPlayTime ?? -1);
                                
                                writer.WriteRaw (jsonKeyLastOnline);
                                writer.WriteString (player != null ? player.LastOnline.ToString ("s") : string.Empty);

                                writer.WriteRaw (jsonKeyPing);
                                writer.WriteInt32 (ci.ping);
                                
                                writer.WriteEndObject ();
                        }
                        
                        writer.WriteEndArray ();
                        
                        WebUtils.WriteJsonData (_context.Response, ref writer);
                }
        }
}