using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using Dapper;
using MySql.Data.MySqlClient;
using log4net;
using CncModels.Entity;
using CncModels.Enum;

namespace CncCollector.Core
{
    /// <summary>
    /// 采集引擎：负责加载采集地址、创建工作线程、心跳和配置轮询等核心调度。
    /// </summary>
    public class CollectorEngine
    {
        private readonly string _connectionString;
        private readonly CollectorConfig _config;
        private readonly List<CollectWorker> _workers = new List<CollectWorker>();
        private readonly ProductionTracker _tracker;
        private readonly DailySummaryJob _dailyJob;
        private readonly ILog _log = LogManager.GetLogger(typeof(CollectorEngine));
        private Thread _pollThread;
        private volatile bool _running;

        public CollectorEngine(string connectionString, CollectorConfig config)
        {
            _connectionString = connectionString;
            _config = config;
            _tracker = new ProductionTracker(connectionString);
            _dailyJob = new DailySummaryJob(connectionString);
        }

        public void Start()
        {
            _log.Info("CollectorEngine starting...");
            _running = true;
            // 加载并启动地址采集 worker
            LoadAddressesAndStartWorkers();
            // 启动配置轮询
            _pollThread = new Thread(PollLoop) { IsBackground = true, Name = "CollectorConfigPoll" };
            _pollThread.Start();
            // 简化心跳机制：直接输出日志
        }

        public void Stop()
        {
            _log.Info("CollectorEngine stopping...");
            _running = false;
            foreach (var w in _workers) w.Stop();
            _workers.Clear();
        }

        public string Status => _running ? "Running" : "Stopped";

        private void LoadAddressesAndStartWorkers()
        {
            using (var conn = new MySqlConnection(_connectionString))
            {
                conn.Open();
                var addresses = conn.Query<CollectAddress>("SELECT * FROM cnc_collect_address WHERE is_enabled=1");
                foreach (var addr in addresses)
                {
                    var w = new CollectWorker(addr, _connectionString, _tracker, _config.ApiKey);
                    w.Start();
                    _workers.Add(w);
                }
            }
        }

        private void PollLoop()
        {
            while (_running)
            {
                try
                {
                    // 轮询配置变更（简化实现）
                    Thread.Sleep(30000);
                }
                catch { }
            }
        }

        /// <summary>重新加载地址配置并重启工作线程</summary>
        public void Refresh()
        {
            Stop();
            Start();
        }
    }
}