using Edge.Core.IndustryStandardInterface.PhotoVoltaicInverter;
using Edge.Core.Parser.BinaryParser.Util;
using Edge.Core.Processor;
using Edge.Core.Processor.Communicator;
using Edge.Core.Processor.Dispatcher.Attributes;
using Edge.Core.UniversalApi;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Logging.Abstractions;
using GroWattInverter.MessageEntity;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Timers;
using System.Text;

namespace GroWattInverter
{
    /// <summary>
    /// the device could support RS485 and Ethernet.
    ///     For RS485, multiple devices could be on the bus, that's why here implement the handler as a group.
    ///     For Ethernet, each handler can only handle one device.
    /// </summary>
    [MetaPartsRequired(typeof(HalfDuplexActivePollingDeviceProcessor<,>))]
    [MetaPartsRequired(typeof(ComPortCommunicator<>))]
    [MetaPartsRequired(typeof(TcpClientCommunicator<>))]
    [MetaPartsDescriptor(
        "lang-zh-cn:古瑞瓦特 光伏逆变器lang-en-us:GroWatt PhotoVoltaic Inverter",
        "lang-zh-cn:用于驱动 古瑞瓦特-X及储能系列逆变器,日志名称 DynamicPrivate_GroWattInverterlang-en-us:Used for driven 古瑞瓦特-X及储能系列逆变器 PhotoVoltaic Inverter",
        new[] { "lang-zh-cn:光伏lang-en-us:PhotoVoltaic" })]
    public class DeviceGroupHandler : TestableActivePollingDeviceHandler<byte[], GroWattInverter.MessageEntity.MessageBase>, IPhotoVoltaicInverterHandler, IDisposable
    {
        private List<InverterDevice> inverterDevices = new List<InverterDevice>();
        private IContext<byte[], MessageBase> context;
        private ILogger logger = NullLogger.Instance;
        private DeviceGroupConfigV1 deviceGroupConfig;
        private IServiceProvider services;

        private int deviceTreatAsOfflineTimeThresholdByMs = 8000;

        public event EventHandler OnDeviceError;

        public class DeviceGroupConfigV1
        {
            public List<DeviceConfigV1> DeviceConfigs { get; set; }
        }

        public class DeviceConfigV1
        {
            public string DeviceName { get; set; }
            public byte SlaveAddress { get; set; }
            public string Description { get; set; }
        }

        [ParamsJsonSchemas("ctorParamsJsonSchema")]
        public DeviceGroupHandler(DeviceGroupConfigV1 deviceGroupConfig, IServiceProvider services)
        {
            this.deviceGroupConfig = deviceGroupConfig;
            this.services = services;
            var loggerFactory = services.GetRequiredService<ILoggerFactory>();
            this.logger = loggerFactory.CreateLogger("DynamicPrivate_SunGrowInverter");
            this.inverterDevices = this.deviceGroupConfig.DeviceConfigs.Select(dc => new InverterDevice(dc.DeviceName, dc.SlaveAddress)).ToList();
        }

        public override void Init(IContext<byte[], MessageBase> context)
        {
            base.Init(context);
            this.context = context;
            var timeWindowWithActivePollingOutgoing =
                this.context.Outgoing as TimeWindowWithActivePollingOutgoing<byte[], MessageBase>;
            int previousPolledDeviceIndex = 0;
            timeWindowWithActivePollingOutgoing.PollingMsgProducer = () =>
            {
                try
                {
                    //no need too fast to detect online&offline state
                    if (DateTime.Now.Second % 3 == 0)
                    {
                        foreach (var d in this.inverterDevices)
                        {
                            var silentLastingTime = DateTime.Now.Subtract(d.LastIncomingMessageReceivedTime ?? DateTime.MinValue).TotalMilliseconds;
                            if (d.IsOnline
                                && silentLastingTime >= this.deviceTreatAsOfflineTimeThresholdByMs)
                            {
                                d.IsOnline = false;
                                var universalApiHub = this.services.GetRequiredService<UniversalApiHub>();
                                var __ = universalApiHub.FirePersistGenericAlarmIfNotExists(this.context.Processor,
                                    new GenericAlarm()
                                    {
                                        Title = $"地址为{d.SlaveAddress}的光伏逆变器连接断开",
                                        Category = $"光伏逆变器",
                                        Detail = $"地址为{d.SlaveAddress}的光伏逆变器于 {DateTime.Now} 连接断开, 上次收到它的消息是 {(int)(silentLastingTime / 1000)}秒 前",
                                        Severity = GenericAlarmSeverity.Warning
                                    }, ga => ga.Detail,
                                    ga => ga.Detail).Result;
                            }
                        }
                    }

                    if (this.deviceGroupConfig.DeviceConfigs.Count <= previousPolledDeviceIndex)
                        previousPolledDeviceIndex = 0;
                    var target = this.deviceGroupConfig.DeviceConfigs[previousPolledDeviceIndex++];
                    //poll:
                    //      45 Sys Year 系统时间-年
                    //      46 Sys Month 系统时间
                    //      47 Sys Day 系
                    //      48 Sys Hour 系统时间-小时
                    //      49 Sys Min 系统时间-分
                    //      50 Sys Sec 系统时间-秒
                    return new OutgoingQueryMessage() { SlaveAddress = target.SlaveAddress, FunctionCode = FunctionCodeEnum.保持寄存器, StartingRegAddress = 45, NoOfRegAddress = 6 };
                }
                catch (Exception exxx)
                {
                    logger.LogError($"Exceptioned (previousPolledHandlerIndex: {previousPolledDeviceIndex}): {exxx}");
                    return null;
                }
            };
        }

        public override async Task Process(IContext<byte[], MessageBase> context)
        {
            this.context = context;
            var targetDevice = this.inverterDevices.FirstOrDefault(id => id.SlaveAddress == context.Incoming.Message.SlaveAddress);
            if (targetDevice == null)
            {
                var universalApiHub = this.services.GetRequiredService<UniversalApiHub>();
                await universalApiHub.FirePersistGenericAlarmIfNotExists(this.context.Processor,
                    new GenericAlarm()
                    {
                        Title = $"地址为{targetDevice.SlaveAddress}的光伏逆变器未配置",
                        Category = $"光伏逆变器",
                        Detail = $"地址为{targetDevice.SlaveAddress}的光伏逆变器:{targetDevice.Description ?? ""} 于 {DateTime.Now} 成功连接，但本地未对其进行配置，请打开FCC配置页面添加此设备",
                        Severity = GenericAlarmSeverity.Warning
                    }, ga => ga.Detail,
                    ga => ga.Detail);
            }
            else if (targetDevice.IsOnline == false)
            {
                targetDevice.LastIncomingMessageReceivedTime = DateTime.Now;
                targetDevice.IsOnline = true;
                var deviceDetailInfoResponse = await context.Outgoing.WriteAsync(
                    new OutgoingQueryMessage()
                    {
                        SlaveAddress = targetDevice.SlaveAddress,
                        FunctionCode = FunctionCodeEnum.保持寄存器,
                        StartingRegAddress = 34,
                        NoOfRegAddress = 1
                    },
                    (testRequest, testResponse) => testResponse is IncomingQueryMessage, 5000) as IncomingQueryMessage;
                if (deviceDetailInfoResponse != null)
                {
                    var universalApiHub = this.services.GetRequiredService<UniversalApiHub>();
                    await universalApiHub.FirePersistGenericAlarmIfNotExists(this.context.Processor,
                        new GenericAlarm()
                        {
                            Title = $"地址为{targetDevice.SlaveAddress}的光伏逆变器成功连接",
                            Category = $"光伏逆变器",
                            Detail = $"地址为{targetDevice.SlaveAddress}的光伏逆变器于 {DateTime.Now} 成功连接,制造商信息: {Encoding.ASCII.GetString(deviceDetailInfoResponse.RawData.ToArray()) }",
                            Severity = GenericAlarmSeverity.Information
                        }, ga => ga.Detail,
                        ga => ga.Detail);
                }
                else
                {
                    var universalApiHub = this.services.GetRequiredService<UniversalApiHub>();
                    await universalApiHub.FirePersistGenericAlarmIfNotExists(this.context.Processor,
                        new GenericAlarm()
                        {
                            Title = $"地址为{targetDevice.SlaveAddress}的光伏逆变器成功连接",
                            Category = $"光伏逆变器",
                            Detail = $"地址为{targetDevice.SlaveAddress}的光伏逆变器于 {DateTime.Now} 成功连接, 但获取设置详细信息失败",
                            Severity = GenericAlarmSeverity.Information
                        }, ga => ga.Detail,
                        ga => ga.Detail);
                }
            }

            await base.Process(context);
            return;
        }

        public void Dispose()
        {
        }

        public IEnumerable<InverterDevice> GetDevices()
        {
            return this.inverterDevices;
        }

        [UniversalApi]
        public virtual async Task<InverterDeviceRealTimeData> ReadRealTimeDataAsync(byte deviceSlaveAddress)
        {
            var 有功response = await this.context.Outgoing.WriteAsync(new OutgoingQueryMessage()
            {
                SlaveAddress = deviceSlaveAddress,
                FunctionCode = FunctionCodeEnum.只读寄存器,
                StartingRegAddress = 53,
                NoOfRegAddress = 2
            }, (_, testResponse) => testResponse is IncomingQueryMessage, 6000) as IncomingQueryMessage;
            if (有功response == null)
                throw new TimeoutException($"ReadRealTimeDataAsync read 有功response timedout for device with slaveAddress: {deviceSlaveAddress}");

            var 无功response = await this.context.Outgoing.WriteAsync(new OutgoingQueryMessage()
            {
                SlaveAddress = deviceSlaveAddress,
                FunctionCode = FunctionCodeEnum.只读寄存器,
                StartingRegAddress = 232,
                NoOfRegAddress = 2
            }, (_, testResponse) => testResponse is IncomingQueryMessage, 6000) as IncomingQueryMessage;
            if (无功response == null)
                throw new TimeoutException($"ReadRealTimeDataAsync read 无功response timedout for device with slaveAddress: {deviceSlaveAddress}");

            var realtimeData = this.Parse(有功response, 无功response);
            return realtimeData;
        }

        [UniversalApi]
        public async Task<object> RawSendOutgoingQueryMessageAsync(byte deviceSlaveAddress, FunctionCodeEnum functionCode, int startingRegAddress, byte noOfRegAddress)
        {
            var response = await this.context.Outgoing.WriteAsync(new OutgoingQueryMessage()
            {
                SlaveAddress = deviceSlaveAddress,
                FunctionCode = functionCode,
                StartingRegAddress = startingRegAddress,
                NoOfRegAddress = noOfRegAddress
            }, (_, testResponse) => testResponse is IncomingQueryMessage, 6000) as IncomingQueryMessage;
            if (response == null)
                throw new TimeoutException("long time no see incoming response");
            return response.ToLogString();
        }

        private InverterDeviceRealTimeData Parse(IncomingQueryMessage 有功response, IncomingQueryMessage 无功response)
        {
            //0.1kWh
            var 日发电量 = ((decimal)(BitConverter.ToUInt32(有功response.RawData.Take(4).Reverse().ToArray()))) / 10;
            //0.1kWh
            decimal 日无功发电量 = -9999;
            if (无功response != null)
                日无功发电量 = ((decimal)(BitConverter.ToUInt32(无功response.RawData.Take(4).Reverse().ToArray()))) / 10;
            return new InverterDeviceRealTimeData()
            {
                //Device = device,
                日有功发电量 = 日发电量,
                日无功发电量 = 日无功发电量,
                //Description = $"设备类型编码: 0x{设备类型编码.ToHexLogString()}, 额定有功功率: {额定有功功率}(kW), 输出类型: {输出类型}, 总发电量: {总发电量}(kWh)"
            };
        }
    }
}