How to make a Rust team info command plugin (Oxide/Carbon)

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

namespace Oxide.Plugins
{
    [Info("Team Info Command", "RustPluginGenerator", "1.0.0")]
    [Description("Adds a /team chat command that lists team members with online status, health and map grid.")]
    public class TeamInfoCommand : RustPlugin
    {
        private const string PermUse = "teaminfocommand.use";

        private PluginConfig config;

        private class PluginConfig
        {
            [JsonProperty("Grid cell size (meters)")]
            public int GridCellSize { get; set; } = 150;

            [JsonProperty("Show health for online members")]
            public bool ShowHealth { get; set; } = true;

            [JsonProperty("Show map grid for online members")]
            public bool ShowGrid { get; set; } = true;

            [JsonProperty("Maximum members listed per message")]
            public int MaxMembersPerMessage { get; set; } = 10;
        }

        protected override void LoadDefaultConfig() => config = new PluginConfig();

        protected override void LoadConfig()
        {
            base.LoadConfig();
            try
            {
                config = Config.ReadObject<PluginConfig>();
                if (config == null) throw new Exception();
            }
            catch
            {
                PrintWarning("Configuration file is invalid, using defaults");
                LoadDefaultConfig();
            }
            SaveConfig();
        }

        protected override void SaveConfig() => Config.WriteObject(config);

        protected override void LoadDefaultMessages()
        {
            lang.RegisterMessages(new Dictionary<string, string>
            {
                ["Header"] = "Team roster ({0} members, leader: {1})",
                ["Leader"] = "[Leader]",
                ["Member"] = "[Member]",
                ["Online"] = "Online",
                ["Sleeping"] = "Sleeping",
                ["Dead"] = "Dead",
                ["Offline"] = "Offline",
                ["Line"] = "{0} {1} - {2}",
                ["LineHealth"] = "{0} {1} - {2} {3}/{4} - Grid {5}",
                ["AndMore"] = "... and {0} more member(s).",
                ["NoTeam"] = "You are not in a team."
            }, this);
        }

        private string Msg(string key, string userId = null, params object[] args)
            => string.Format(lang.GetMessage(key, this, userId), args);

        private void Init()
        {
            permission.RegisterPermission(PermUse, this);
        }

        [ChatCommand("team")]
        private void CmdTeam(BasePlayer player, string command, string[] args)
        {
            if (player == null) return;
            if (!permission.UserHasPermission(player.UserIDString, PermUse))
            {
                SendReply(player, Msg("NoTeam", player.UserIDString));
                return;
            }

            ulong teamId = player.currentTeam;
            if (teamId == 0)
            {
                SendReply(player, Msg("NoTeam", player.UserIDString));
                return;
            }

            var team = RelationshipManager.ServerInstance.FindTeam(teamId);
            if (team == null || team.members == null || team.members.Count == 0)
            {
                SendReply(player, Msg("NoTeam", player.UserIDString));
                return;
            }

            string leaderName = ResolveName(team.teamLeader);
            SendReply(player, Msg("Header", player.UserIDString, team.members.Count, leaderName));

            int limit = Mathf.Clamp(config.MaxMembersPerMessage, 1, 50);
            int printed = 0;
            foreach (ulong memberId in team.members)
            {
                if (printed >= limit) break;

                BasePlayer member = BasePlayer.FindByID(memberId);
                string name = ResolveName(memberId, member);
                string rank = memberId == team.teamLeader ? Msg("Leader", player.UserIDString) : Msg("Member", player.UserIDString);

                if (member == null)
                {
                    SendReply(player, Msg("Line", player.UserIDString, rank, name, Msg("Offline", player.UserIDString)));
                    printed++;
                    continue;
                }

                if (member.IsDead())
                {
                    SendReply(player, Msg("Line", player.UserIDString, rank, name, Msg("Dead", player.UserIDString)));
                    printed++;
                    continue;
                }

                if (!member.IsConnected || member.IsSleeping())
                {
                    SendReply(player, Msg("Line", player.UserIDString, rank, name, Msg("Sleeping", player.UserIDString)));
                    printed++;
                    continue;
                }

                string status;
                if (config.ShowHealth)
                {
                    status = Msg("Online", player.UserIDString);
                    int health = Mathf.CeilToInt(member.health);
                    int maxHealth = Mathf.CeilToInt(member.MaxHealth());
                    string grid = config.ShowGrid ? GridReference(member.transform.position) : "-";
                    SendReply(player, Msg("LineHealth", player.UserIDString, rank, name, status, health, maxHealth, grid));
                }
                else
                {
                    string grid = config.ShowGrid ? GridReference(member.transform.position) : "-";
                    status = config.ShowGrid
                        ? string.Format("{0} (Grid {1})", Msg("Online", player.UserIDString), grid)
                        : Msg("Online", player.UserIDString);
                    SendReply(player, Msg("Line", player.UserIDString, rank, name, status));
                }

                printed++;
            }

            int remaining = team.members.Count - printed;
            if (remaining > 0)
            {
                SendReply(player, Msg("AndMore", player.UserIDString, remaining));
            }
        }

        private string ResolveName(ulong userId, BasePlayer known = null)
        {
            BasePlayer found = known ?? BasePlayer.FindByID(userId);
            if (found != null && !string.IsNullOrEmpty(found.displayName))
                return found.displayName;
            return userId.ToString();
        }

        private string GridReference(Vector3 position)
        {
            float cell = Mathf.Max(1f, config.GridCellSize);
            float worldSize = World.Size;
            if (worldSize <= 0f) return "-";

            int cells = Mathf.Max(1, Mathf.CeilToInt(worldSize / cell));
            int x = Mathf.Clamp(Mathf.FloorToInt((position.x + worldSize * 0.5f) / cell), 0, cells - 1);
            int z = Mathf.Clamp(Mathf.FloorToInt((worldSize * 0.5f - position.z) / cell), 0, cells - 1);

            var sb = new StringBuilder();
            int letterIndex = x;
            do
            {
                sb.Insert(0, (char)('A' + letterIndex % 26));
                letterIndex = letterIndex / 26 - 1;
            } while (letterIndex >= 0);

            sb.Append(z);
            return sb.ToString();
        }
    }
}