OnPortalUsed

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

namespace Oxide.Plugins
{
    [Info("Portal Travel Announcer", "RustPluginGenerator", "1.0.0")]
    [Description("Announces portal arrivals and logs travel counts per portal.")]
    public class PortalTravelAnnouncer : RustPlugin
    {
        private PluginConfig config;
        private StoredData data;
        private const string PermStats = "portaltravelannouncer.stats";
        private readonly Dictionary<ulong, float> lastTravel = new Dictionary<ulong, float>();

        private class PluginConfig
        {
            [JsonProperty("Announce arrivals to player")]
            public bool Announce { get; set; } = true;

            [JsonProperty("Chat cooldown (seconds)")]
            public float Cooldown { get; set; } = 5f;
        }

        private class StoredData
        {
            [JsonProperty("Travel counts by portal id")]
            public Dictionary<string, int> Counts { get; set; } = new Dictionary<string, int>();
        }

        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>
            {
                ["Arrived"] = "You traveled through a portal. Arrived near {0}.",
                ["Stats"] = "Portal {0} has been used {1} times."
            }, 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(PermStats, this);
            data = Interface.Oxide.DataFileSystem.ReadObject<StoredData>(Name) ?? new StoredData();
        }

        private void Unload()
        {
            Interface.Oxide.DataFileSystem.WriteObject(Name, data);
        }

        private void OnPortalUsed(BasePlayer player, BasePortal portal)
        {
            if (player == null || portal == null || !player.IsConnected) return;

            string portalId = portal.net != null ? portal.net.ID.Value.ToString() : "unknown";
            int count;
            data.Counts.TryGetValue(portalId, out count);
            data.Counts[portalId] = count + 1;

            if (!config.Announce) return;

            float last;
            if (lastTravel.TryGetValue(player.userID, out last))
            {
                if (UnityEngine.Time.realtimeSinceStartup - last < config.Cooldown) return;
            }
            lastTravel[player.userID] = UnityEngine.Time.realtimeSinceStartup;

            Vector3 dest = portal.targetPortal != null ? portal.targetPortal.transform.position : portal.transform.position;
            string label = string.Format("{0}, {1}", Mathf.RoundToInt(dest.x), Mathf.RoundToInt(dest.z));
            player.ChatMessage(Msg("Arrived", player.UserIDString, label));
        }

        [ConsoleCommand("portal.stats")]
        private void CmdStats(ConsoleSystem.Arg arg)
        {
            var player = arg.Player();
            if (player != null && !player.IsAdmin && !permission.UserHasPermission(player.UserIDString, PermStats))
            {
                return;
            }
            foreach (var kvp in data.Counts)
            {
                arg.ReplyWith(Msg("Stats", player?.UserIDString, kvp.Key, kvp.Value));
            }
        }
    }
}