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 SunGrowInverter.MessageEntity;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Timers;

namespace SunGrowInverter
{
    /// <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:SunGrow 光伏逆变器lang-en-us:SunGrow PhotoVoltaic Inverter",
        "lang-zh-cn:用于驱动 SunGrow 光伏逆变器,日志名称 DynamicPrivate_SunGrowInverterlang-en-us:Used for driven SunGrow PhotoVoltaic Inverter",
        new[] { "lang-zh-cn:光伏lang-en-us:PhotoVoltaic" })]
    public class DeviceGroupHandler : TestableActivePollingDeviceHandler<byte[], SunGrowInverter.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 设备类型编码
                    return new OutgoingQueryMessage() { SlaveAddress = target.SlaveAddress, FunctionCode = FunctionCodeEnum.只读寄存器, StartingRegAddress = 4999, NoOfRegAddress = 1 };
                }
                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);
                await base.Process(context);
                return;
            }

            targetDevice.LastIncomingMessageReceivedTime = DateTime.Now;
            if (targetDevice.IsOnline == false)
            {
                targetDevice.LastIncomingMessageReceivedTime = DateTime.Now;
                targetDevice.IsOnline = true;
                //保持寄存器, 5000-5005 are 系统时钟, sample raw response body: 0x07 0xE6 0x00 0x08 0x00 0x1D 0x00 0x0D 0x00 0x1D 0x00 0x1A
                var deviceDetailInfoResponse = await context.Outgoing.WriteAsync(
                    new OutgoingQueryMessage() { SlaveAddress = targetDevice.SlaveAddress, FunctionCode = FunctionCodeEnum.保持寄存器, StartingRegAddress = 4999, NoOfRegAddress = 6 },
                    (testRequest, testResponse) => testResponse is IncomingQueryMessage, 5000) as IncomingQueryMessage;
                if (deviceDetailInfoResponse != null)
                {
                    var device_year = BitConverter.ToUInt16(deviceDetailInfoResponse.RawData.Take(2).Reverse().ToArray());
                    var device_month = BitConverter.ToUInt16(deviceDetailInfoResponse.RawData.Skip(2).Take(2).Reverse().ToArray());
                    var device_day_in_month = BitConverter.ToUInt16(deviceDetailInfoResponse.RawData.Skip(4).Take(2).Reverse().ToArray());
                    var device_hour = BitConverter.ToUInt16(deviceDetailInfoResponse.RawData.Skip(6).Take(2).Reverse().ToArray());
                    var device_min = BitConverter.ToUInt16(deviceDetailInfoResponse.RawData.Skip(8).Take(2).Reverse().ToArray());
                    var device_sec = BitConverter.ToUInt16(deviceDetailInfoResponse.RawData.Skip(10).Take(2).Reverse().ToArray());
                    //var info = this.ParseFromIncomingQueryMessage_For_Request_With_StartingRegAddress4999_NoOfRegAddress10(targetDevice, deviceDetailInfoResponse);
                    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,设备侧的时间设置为: {device_year}年{device_month}月{device_day_in_month}日 - {device_hour}时{device_min}分{device_sec}秒",
                            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 response = await this.context.Outgoing.WriteAsync(new OutgoingQueryMessage()
            {
                SlaveAddress = deviceSlaveAddress,
                StartingRegAddress = 4999,
                NoOfRegAddress = 11
            }, (_, testResponse) => testResponse is IncomingQueryMessage, 6000) as IncomingQueryMessage;
            if (response == null)
                throw new TimeoutException($"ReadRunningInfoAsync timedout for device with slaveAddress: {deviceSlaveAddress}");

            var realtimeData = this.ParseFromIncomingQueryMessage_For_Request_With_StartingRegAddress4999_NoOfRegAddress10(response);

            //总有功功率 5031～5032 U32   W
            //总无功功率 5033~5034 S32   var
            //总功率因数 5035 S16    0.001   正功率因数代表超前，负功率因数代表滞后
            //电网频率 5036 U16     0.1Hz
            //RAW response sample: 0x01 03 0C FF FF FF FF FF FF 00 03 00 55 00 55 53 51
            var extraReadingResponse = await this.context.Outgoing.WriteAsync(new OutgoingQueryMessage()
            {
                SlaveAddress = deviceSlaveAddress,
                StartingRegAddress = 5030,
                NoOfRegAddress = 6
            }, (_, testResponse) => testResponse is IncomingQueryMessage, 6000) as IncomingQueryMessage;
            if (extraReadingResponse != null)
            {
                var 总有功功率 = BitConverter.ToUInt32(extraReadingResponse.RawData.Take(4).Reverse().ToArray());
                var 总无功功率 = BitConverter.ToInt32(extraReadingResponse.RawData.Skip(4).Take(4).Reverse().ToArray());
                var 总功率因数 = ((decimal)BitConverter.ToInt16(extraReadingResponse.RawData.Skip(8).Take(2).Reverse().ToArray())) / 1000;
                var 电网频率 = ((decimal)BitConverter.ToUInt16(extraReadingResponse.RawData.Skip(10).Take(2).Reverse().ToArray())) / 10;
                realtimeData.Description += $", 总有功功率: {总有功功率}(W), 总无功功率: {总无功功率}(var), 总功率因数: {总功率因数}, 电网频率:{电网频率}(Hz)";
            }

            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 ParseFromIncomingQueryMessage_For_Request_With_StartingRegAddress4999_NoOfRegAddress10(IncomingQueryMessage incomingQueryMessage)
        {
            //sample response from doc:
            //01 04 14      01 32   00 28   00 00   00 00 00 05 00 00 00 26 00 00 00 00 00 00 56 EA
            //注：读取 SG60KU-M 设备类型码为 0x0132，额定输出功率 4.0 kW，两相，日发电量为 0，总发电量为 5 kWh，总运行时间为 38h，机内空气温度为 0，机内变压器温度为 0。

            //sample from real device:
            //              设备类型编码  额定有功功率(0.1kW)   输出类型    日发电量(0.1kW)    总发电量(kWh)  总并网运行时间(h)    机内空气温度(0.1c)    总视在功率(VA)
            //0x0x01 04 16      2C 02       01 F4 00 01 08 3C 2E 7C 00 00 02 DF 00 00 02 27 6A 9F 00 00 CB 69
            //{
            //  "日有功发电量": 133,
            //  "日无功发电量": 0,
            //  "总发电量": 11480,
            //  "总运行时间": 699,
            //  "机内空气温度": 0,
            //  "机内变压器温度": 0,
            //  "Description": "设备类型编码: 0x2C 02, 额定有功功率: 50(kW), 输出类型: 三相三线, 总发电量: 11480(kWh)"
            //}

            var 设备类型编码 = incomingQueryMessage.RawData.Take(2);
            //0.1kW
            var 额定有功功率 = ((decimal)BitConverter.ToUInt16(incomingQueryMessage.RawData.Skip(2).Take(2).Reverse().ToArray())) / 10;
            var raw_输出类型 = BitConverter.ToUInt16(incomingQueryMessage.RawData.Skip(4).Take(2).ToArray());
            var 输出类型 = raw_输出类型 == 0 ? "单相" : (raw_输出类型 == 1 ? "三相四线" : "三相三线");
            //0.1kWh
            var 日发电量 = ((decimal)BitConverter.ToUInt16(incomingQueryMessage.RawData.Skip(6).Take(2).Reverse().ToArray())) / 10;
            //kWh
            var 总发电量 = ((decimal)BitConverter.ToUInt32(incomingQueryMessage.RawData.Skip(8).Take(4).Reverse().ToArray()));
            //h
            var 总并网运行时间 = ((decimal)BitConverter.ToUInt32(incomingQueryMessage.RawData.Skip(12).Take(4).Reverse().ToArray()));
            //0.1℃
            var 机内空气温度 = ((decimal)BitConverter.ToInt16(incomingQueryMessage.RawData.Skip(16).Take(2).Reverse().ToArray())) / 10;
            //VA
            var 总视在功率 = ((decimal)BitConverter.ToUInt32(incomingQueryMessage.RawData.Skip(18).Take(4).Reverse().ToArray()));
            return new InverterDeviceRealTimeData()
            {
                //Device = device,
                日有功发电量 = 日发电量,
                总运行时间 = 总并网运行时间,
                机内空气温度 = 机内空气温度,
                总发电量 = 总发电量,
                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), 总并网运行时间: {总并网运行时间}(h), 总视在功率: {总视在功率}(VA)"
            };
        }
    }
}