OnDeepSeaOpened

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

namespace Oxide.Plugins
{
    [Info("Deep Sea Open Announcer", "RustPluginGenerator", "1.0.0")]
    [Description("Announces deep sea opens and tracks a simple open history.")]
    public class DeepSeaOpenAnnouncer : RustPlugin
    {
        private const string DataFile = "DeepSeaOpenAnnouncer";

        private PluginConfig config;
        private StoredData data;
        private float lastOpenAt = -60f;

        private class PluginConfig
        {
            [JsonProperty("Broadcast message on open")]
            public bool BroadcastOnOpen { get; set; } = true;

            [JsonProperty("Seconds between announcements")]
            public float CooldownSeconds { get; set; } = 60f;
        }

        private class StoredData
        {
            [JsonProperty("Open count")]
            public int OpenCount { get; set; }

            [JsonProperty("Last open UTC")]
            public string LastOpenUtc { get; set; } = "";
        }

        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>
            {
                ["Broadcast"] = "The deep sea has opened. New loot is available down below.",
                ["Saved"] = "Deep sea open recorded. Total opens: {0}."
            }, this);
        }

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

        private void OnServerInitialized()
        {
            data = Interface.Oxide.DataFileSystem.ReadObject<StoredData>(DataFile) ?? new StoredData();
        }

        private void OnDeepSeaOpened(DeepSeaManager deepSeaManager)
        {
            if (deepSeaManager == null) return;

            float now = UnityEngine.Time.realtimeSinceStartup;
            if (now - lastOpenAt < config.CooldownSeconds) return;
            lastOpenAt = now;

            data.OpenCount++;
            data.LastOpenUtc = DateTime.UtcNow.ToString("yyyy-MM-dd HH:mm:ss");
            Interface.Oxide.DataFileSystem.WriteObject(DataFile, data);

            if (config.BroadcastOnOpen)
            {
                Server.Broadcast(Msg("Broadcast"));
            }
        }

        private void Unload()
        {
            if (data != null)
            {
                Interface.Oxide.DataFileSystem.WriteObject(DataFile, data);
            }
        }
    }
}