using Microsoft.ClearScript.JavaScript;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using Org.BouncyCastle.Utilities;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using YunDa.Server.ISMSTcp.Domain;
using YunDa.Server.ISMSTcp.Models;
using YunDa.SOMS.DataTransferObject.ExternalEntities.BeijingYounuo;
using static System.Runtime.InteropServices.JavaScript.JSType;

namespace YunDa.Server.ISMSTcp.Services
{
    /// <summary>
    /// 虚端子处理服务
    /// 负责处理虚端子相关的业务逻辑
    /// </summary>
    public class VirtualTerminalHandler
    {
        private readonly ILogger<VirtualTerminalHandler> _logger;
        private readonly WebApiRequest _webApiRequest;
        private readonly ZzDataCacheContainerInit _zzDataCacheContainerInit;

        // 🔧 新增：光纤虚点处理相关字段
        private readonly ConcurrentDictionary<string, OpticalFiberDto> _virtualPointToOpticalFiberMapping = new ConcurrentDictionary<string, OpticalFiberDto>();

        // 初始化状态
        public volatile bool _isOpticalFiberMappingInitialized = false;
        private readonly object _opticalFiberInitLock = new object();


        //数据缓冲队列
        private ZzDataCacheContainer _zzDataCacheContainer = new ZzDataCacheContainer(5);


        public VirtualTerminalHandler(ILogger<VirtualTerminalHandler> logger, WebApiRequest webApiRequest, ZzDataCacheContainerInit zzDataCacheContainerInit)
        {
            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
            _webApiRequest = webApiRequest ?? throw new ArgumentNullException(nameof(webApiRequest));
            _zzDataCacheContainerInit = zzDataCacheContainerInit;
            _zzDataCacheContainerInit.InitVariantBaseinfo(_zzDataCacheContainer);
        }

        /// <summary>
        /// 初始化光纤虚点映射
        /// </summary>
        /// <param name="maxRetries">最大重试次数</param>
        /// <param name="retryDelayMs">重试间隔（毫秒）</param>
        /// <returns>初始化任务</returns>
        public async Task<bool> InitOpticalFiberMappingAsync(int maxRetries = 3, int retryDelayMs = 2000)
        {
            if (_isOpticalFiberMappingInitialized)
            {
                _logger.LogInformation("光纤虚点映射已经初始化完成");
                return true;
            }

            lock (_opticalFiberInitLock)
            {
                if (_isOpticalFiberMappingInitialized)
                {
                    return true;
                }

                _logger.LogInformation("开始初始化光纤虚点映射...");
            }

            for (int attempt = 1; attempt <= maxRetries; attempt++)
            {
                try
                {
                    _logger.LogInformation("第 {Attempt}/{MaxRetries} 次尝试获取光纤配置数据", attempt, maxRetries);

                    // 获取光纤配置数据
                    var opticalFibers = await _webApiRequest.GetOpticalFiberListAsync();

                    if (opticalFibers == null || opticalFibers.Count == 0)
                    {
                        _logger.LogWarning("第 {Attempt} 次查询光纤配置数据为空", attempt);

                        if (attempt < maxRetries)
                        {
                            _logger.LogInformation("等待 {DelayMs} 毫秒后重试...", retryDelayMs);
                            await Task.Delay(retryDelayMs);
                            continue;
                        }
                        else
                        {
                            _logger.LogError("所有重试都失败，无法获取光纤配置数据");
                            return false;
                        }
                    }

                    // 创建虚点编码到光纤配置的映射
                    int mappingCount = 0;
                    foreach (var fiber in opticalFibers.Where(f => f.IsActive && !string.IsNullOrWhiteSpace(f.VirtualPointCode)))
                    {
                        if (_virtualPointToOpticalFiberMapping.TryAdd(fiber.VirtualPointCode, fiber))
                        {
                            mappingCount++;
                        }
                        else
                        {
                            _logger.LogWarning("虚点编码重复: {VirtualPointCode}", fiber.VirtualPointCode);
                        }
                    }

                    lock (_opticalFiberInitLock)
                    {
                        _isOpticalFiberMappingInitialized = true;
                    }

                    _logger.LogInformation("光纤虚点映射初始化成功！光纤配置: {OpticalFiberCount} 个，虚点映射: {MappingCount} 个",
                        opticalFibers.Count, mappingCount);
                    return true;
                }
                catch (Exception ex)
                {
                    _logger.LogError(ex, "第 {Attempt} 次初始化光纤虚点映射时发生错误", attempt);

                    if (attempt < maxRetries)
                    {
                        _logger.LogInformation("等待 {DelayMs} 毫秒后重试...", retryDelayMs);
                        await Task.Delay(retryDelayMs);
                    }
                    else
                    {
                        _logger.LogError("所有重试都失败，初始化光纤虚点映射失败");
                        return false;
                    }
                }
            }

            return false;
        }

        /// <summary>
        /// 处理虚端子数据
        /// </summary>
        /// <param name="virtualTerminalData">虚端子数据对象</param>
        /// <returns>处理任务</returns>
        public async Task ProcessVirtualTerminalDataAsync(VirtualTerminalData virtualTerminalData)
        {
            try
            {
                if (virtualTerminalData == null)
                {
                    _logger.LogWarning("虚端子数据为空，跳过处理");
                    return;
                }

                if (!virtualTerminalData.IsValid())
                {
                    _logger.LogWarning("虚端子数据无效：{Data}", virtualTerminalData);
                    return;
                }

                _logger.LogInformation("开始处理虚端子数据：{Data}", virtualTerminalData);

                // 解析时间戳
                if (virtualTerminalData.TryParseDateTime(out DateTime timestamp))
                {
                    _logger.LogInformation("虚端子时间戳解析成功：{Timestamp}", timestamp);
                }
                else
                {
                    _logger.LogInformation("虚端子时间戳解析失败：{TimeString}", virtualTerminalData.T);
                }

                // 解析数值
                if (virtualTerminalData.TryParseValue(out double value))
                {
                    _logger.LogInformation("虚端子数值解析成功：{Value}", value);
                }
                else
                {
                    _logger.LogInformation("虚端子数值为非数字类型：{ValueString}", virtualTerminalData.V);
                }

                // 根据UA_ID执行不同的处理逻辑
                await ProcessByUAId(virtualTerminalData);

                //存入缓存
                SaveDataToCache(virtualTerminalData.VA_ID, value, timestamp);

                _logger.LogInformation("虚端子数据处理完成：{UA_ID}", virtualTerminalData.VA_ID);
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "处理虚端子数据时发生异常：{Data}", virtualTerminalData);
            }
        }

        /// <summary>
        /// 根据UA_ID执行不同的处理逻辑
        /// </summary>
        /// <param name="data">虚端子数据</param>
        /// <returns>处理任务</returns>
        private async Task ProcessByUAId(VirtualTerminalData data)
        {
            try
            {
                 await ProcessDefaultLogic(data);
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "根据UA_ID处理虚端子数据时发生异常：{UA_ID}", data.VA_ID);
            }
        }

        /// <summary>
        /// 默认处理逻辑 - 处理光纤虚点
        /// </summary>
        /// <param name="data">虚端子数据</param>
        /// <returns>处理任务</returns>
        private async Task ProcessDefaultLogic(VirtualTerminalData data)
        {
            try
            {
                if (!_isOpticalFiberMappingInitialized)
                {
                    _logger.LogDebug("光纤虚点映射尚未初始化，跳过处理");
                    return;
                }

                // 检查是否有对应的光纤配置
                if (!_virtualPointToOpticalFiberMapping.TryGetValue(data.VA_ID, out var opticalFiber))
                {
                    _logger.LogDebug("未找到虚点编码 {VA_ID} 对应的光纤配置", data.VA_ID);
                    return;
                }

                // 解析虚点值
                if (!data.TryParseValue(out double value))
                {
                    _logger.LogWarning("无法解析虚点值: {Value}, 虚点编码: {VA_ID}", data.V, data.VA_ID);
                    return;
                }

                _logger.LogDebug("处理光纤虚点: {VA_ID}, 值: {Value}, 光纤: {TwinId}", data.VA_ID, value, opticalFiber.TwinId);

                // 根据虚点值处理报警
                //Boolean型变量的值(真,假,不定)2018-04-26从uPro设备
                //TVariantBoolValue = (vbTrue = 0，vbFalse = 1 vbUncertain = 2):
                if (Math.Abs(value) < 0.0001) // 故障状态
                {
                    await PushOpticalFiberAlarmAsync(opticalFiber, data);
                }
                else if (Math.Abs(value - 1) < 0.0001) // 正常状态
                {
                    await DeleteOpticalFiberAlarmAsync(opticalFiber, data);
                }
                else
                {
                    _logger.LogWarning("光纤虚点值异常: {Value}, 预期值为0或1, 虚点编码: {VA_ID}", value, data.VA_ID);
                }
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "处理光纤虚点默认逻辑时发生错误: {VA_ID}", data.VA_ID);
            }
        }


        /// <summary>
        /// 尝试从JSON字符串解析虚端子数据
        /// </summary>
        /// <param name="json">JSON字符串</param>
        /// <param name="virtualTerminalData">解析后的虚端子数据</param>
        /// <returns>是否解析成功</returns>
        public bool TryParseVirtualTerminalData(string json, out VirtualTerminalData virtualTerminalData)
        {
            virtualTerminalData = null;
            
            try
            {
                if (string.IsNullOrEmpty(json))
                {
                    return false;
                }

                virtualTerminalData = JsonConvert.DeserializeObject<VirtualTerminalData>(json);
                return virtualTerminalData != null && virtualTerminalData.IsValid();
            }
            catch (Exception ex)
            {
                _logger.LogDebug(ex, "解析虚端子数据失败：{Json}", json);
                return false;
            }
        }

        /// <summary>
        /// 推送光纤报警到3D系统
        /// </summary>
        /// <param name="opticalFiber">光纤配置</param>
        /// <param name="virtualTerminalData">虚端子数据</param>
        /// <returns></returns>
        private async Task PushOpticalFiberAlarmAsync(OpticalFiberDto opticalFiber, VirtualTerminalData virtualTerminalData)
        {
            try
            {
                if (string.IsNullOrWhiteSpace(opticalFiber.TwinId))
                {
                    _logger.LogWarning("光纤配置缺少TwinId: {VirtualPointCode}", opticalFiber.VirtualPointCode);
                    return;
                }

                // 解析时间戳
                var timestamp = DateTime.Now;
                if (virtualTerminalData.TryParseDateTime(out DateTime parsedTime))
                {
                    timestamp = parsedTime;
                }

                // 构造报警数据
                var alarmData = new YounuoAlert
                {
                    TwinID = opticalFiber.TwinId,
                    Severity = 1, // 默认严重级别
                    Status = 1, // 活跃报警
                    SourceAlertKey = "光纤故障",
                    Summary = $"光纤 {opticalFiber.CiCode ?? opticalFiber.TwinId} 故障，虚点编码: {opticalFiber.VirtualPointCode}",
                    SourceIdentifier = $"OpticalFiber_{opticalFiber.TwinId}_{opticalFiber.VirtualPointCode}",
                    LastOccurrence = timestamp.ToString("yyyy-MM-dd HH:mm:ss"),
                };

                _logger.LogInformation("推送光纤报警: TwinId={TwinId}, 虚点编码={VirtualPointCode}, 值={Value}",
                    opticalFiber.TwinId, opticalFiber.VirtualPointCode, virtualTerminalData.V);
                await _webApiRequest.CallPushAlarmsApiAsync(alarmData);
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "推送光纤报警时发生错误: TwinId={TwinId}, 虚点编码={VirtualPointCode}",
                    opticalFiber.TwinId, opticalFiber.VirtualPointCode);
            }
        }

        /// <summary>
        /// 删除光纤报警
        /// </summary>
        /// <param name="opticalFiber">光纤配置</param>
        /// <param name="virtualTerminalData">虚端子数据</param>
        /// <returns></returns>
        private async Task DeleteOpticalFiberAlarmAsync(OpticalFiberDto opticalFiber, VirtualTerminalData virtualTerminalData)
        {
            try
            {
                if (string.IsNullOrWhiteSpace(opticalFiber.TwinId))
                {
                    _logger.LogWarning("光纤配置缺少TwinId: {VirtualPointCode}", opticalFiber.VirtualPointCode);
                    return;
                }

                _logger.LogInformation("删除光纤报警: TwinId={TwinId}, 虚点编码={VirtualPointCode}, 值={Value}",
                    opticalFiber.TwinId, opticalFiber.VirtualPointCode, virtualTerminalData.V);

                // TODO: 实现实际的API调用到BeijingYounuoApiAppService.DeleteAlarmsByTwinIdAsync
                // 由于架构限制，可能需要通过HTTP API或消息队列来实现
                 await _webApiRequest.CallDeleteAlarmsByTwinIdApiAsync(opticalFiber.TwinId);
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "删除光纤报警时发生错误: TwinId={TwinId}, 虚点编码={VirtualPointCode}",
                    opticalFiber.TwinId, opticalFiber.VirtualPointCode);
            }
        }


        //缓存遥信数据到内存
        private void SaveDataToCache(string id, double value, DateTime timestamp)
        {
            try
            {
                _zzDataCacheContainer.Write(id, value, timestamp, "");
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "VirtualTerminalHandler: SaveDataToCache 出错");
            }
            
                
        }

        //查询数据
        public async Task<List<ZzDataResultModel>> GetDataByIds(List<string> ids, int seconds, int timeWindowType, CancellationToken cancellationToken)
        {
            try
            {
                return await _zzDataCacheContainer.Read(ids, seconds, timeWindowType, cancellationToken);
            }
            catch (Exception ex)
            {

                _logger.LogError(ex, "VirtualTerminalHandler: GetDataByIds 出错");
                return new List<ZzDataResultModel>();
            }


        }
    }
}