using DeviceCommand.Base;
using Model.Model;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;

namespace DeviceCommand.Devices
{
    /// <summary>
    /// CTS3-6-300-8IS0 设备：通过 EnovaDataController 接收下位机 POST 上报的通道数据
    /// </summary>
    public class CTS3 : EnovaDataReporter
    {
        /// <summary>
        /// 最近一次收到的通道数据快照（key = ChannelCode）
        /// </summary>
        public IReadOnlyDictionary<string, EnovaChannelData> LatestChannelData => _latestChannelData;
        private readonly Dictionary<string, EnovaChannelData> _latestChannelData = new Dictionary<string, EnovaChannelData>();
        private readonly object _dataLock = new object();

        /// <summary>
        /// 业务侧可订阅此事件以获得更友好的回调（仅本设备数据）
        /// </summary>
        public event EventHandler<EnovaChannelDataReceivedEventArgs>? OnDataUpdated;

        public CTS3(HttpClient httpClient) : base(httpClient)
        {
            // 订阅基类事件：当 Controller 调用 HandleIncomingChannelData 时会触发
            ChannelDataReceived += OnChannelDataReceivedInternal;
        }

        /// <summary>
        /// 指定 DeviceCode 的便捷构造，便于多台 CTS3 共存时按 deviceCode 精确匹配
        /// </summary>
        public CTS3(HttpClient httpClient, string deviceCode) : this(httpClient)
        {
            DeviceCode = deviceCode ?? string.Empty;
        }

        private void OnChannelDataReceivedInternal(object? sender, EnovaChannelDataReceivedEventArgs e)
        {
            if (e?.DataList == null || e.DataList.Count == 0)
            {
                return;
            }

            // 1. 缓存最近一次的通道快照
            lock (_dataLock)
            {
                foreach (var data in e.DataList)
                {
                    if (data == null) continue;
                    string key = data.ChannelCode ?? string.Empty;
                    _latestChannelData[key] = data;
                }
            }

            // 2. 业务异常拦截示例：通道错误状态
            foreach (var data in e.DataList)
            {
                if (data == null) continue;
                if (data.ChannelState == "错误" || data.ChannelState == "0x04")
                {
                    // TODO: 触发本地报警逻辑
                    // Logger.LoggerHelper.WarnWithNotify($"通道 {data.ChannelCode} 故障");
                }
            }

            // 3. 转发给业务订阅者
            OnDataUpdated?.Invoke(this, e);
        }

        public override void Unregister()
        {
            ChannelDataReceived -= OnChannelDataReceivedInternal;
            base.Unregister();
        }
    }
}