using Assets.Scripts.Ble;
using Assets.Scripts.Devices.Ble.Interfaces;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Assets.Scripts.Devices.Ble.Characteristic
{
    public class FtmsIndoorBikeData : ICharacteristic
    {
        private readonly ushort? _instantSpeedSubject = new ushort?();
        private readonly ushort? _averageSpeedSubject = new ushort?();
        private readonly ushort? _instantCadenceSubject = new ushort?();
        private readonly ushort? _averageCadenceSubject = (new ushort?());
        private readonly uint? _totalDistanceSubject = (new uint?());
        private readonly short? _resistanceLevelSubject = (new short?());
        private readonly short? _instantPowerSubject = (new short?());
        private readonly short? _averagePowerSubject = (new short?());
        private readonly ushort? _totalEnergySubject = (new ushort?());
        private readonly ushort? _energyPerHourSubject = (new ushort?());
        private readonly byte? _energyPerMinuteSubject = (new byte?());
        private readonly byte? _heartRateSubject = (new byte?());
        private readonly byte? _metabolicEquivalentSubject = (new byte?());
        private readonly ushort? _elapsedTimeSubject = (new ushort?());
        private readonly ushort? _remainingTimeSubject = (new ushort?());

        public short? InstantPower
        {
            get
            {
                return this._instantPowerSubject;
            }
        }
        public ushort? InstantCadence
        {
            get
            {
                return this._instantCadenceSubject;
            }
        }
        public ushort? InstantSpeed
        {
            get
            {
                return this._instantSpeedSubject;
            }
        }


        public Guid Uuid => ServiceUuids.Characteristics.IndoorBikeData;

        public Guid ServiceUuid => ServiceUuids.Get(ServiceUuids.Ftms).IdGuid;

        public bool IsOptional => false;

        public void HandleAttributeReceived(byte[] data)
        {
            if(data.Length < 2)
            {
                return;
            }

            List<FtmsIndoorBikeData.IndoorBikeDataField> list = new List<FtmsIndoorBikeData.IndoorBikeDataField>();
            if (!ByteExtensions.IsFlagSetAtPosition(data[0], (byte)0))
                list.Add(FtmsIndoorBikeData.IndoorBikeDataField.InstantaneousSpeed);
            if (ByteExtensions.IsFlagSetAtPosition(data[0], (byte)1))
                list.Add(FtmsIndoorBikeData.IndoorBikeDataField.AverageSpeed);
            if (ByteExtensions.IsFlagSetAtPosition(data[0], (byte)2))
                list.Add(FtmsIndoorBikeData.IndoorBikeDataField.InstantaneousCadence);
            if (ByteExtensions.IsFlagSetAtPosition(data[0], (byte)3))
                list.Add(FtmsIndoorBikeData.IndoorBikeDataField.AverageCadence);
            if (ByteExtensions.IsFlagSetAtPosition(data[0], (byte)4))
                list.Add(FtmsIndoorBikeData.IndoorBikeDataField.TotalDistance);
            if (ByteExtensions.IsFlagSetAtPosition(data[0], (byte)5))
                list.Add(FtmsIndoorBikeData.IndoorBikeDataField.ResistanceLevel);
            if (ByteExtensions.IsFlagSetAtPosition(data[0], (byte)6))
                list.Add(FtmsIndoorBikeData.IndoorBikeDataField.InstantaneousPower);
            if (ByteExtensions.IsFlagSetAtPosition(data[0], (byte)7))
                list.Add(FtmsIndoorBikeData.IndoorBikeDataField.AveragePower);
            if (ByteExtensions.IsFlagSetAtPosition(data[1], (byte)0))
                list.Add(FtmsIndoorBikeData.IndoorBikeDataField.ExpendedEnergy);
            if (ByteExtensions.IsFlagSetAtPosition(data[1], (byte)1))
                list.Add(FtmsIndoorBikeData.IndoorBikeDataField.HeartRate);
            if (ByteExtensions.IsFlagSetAtPosition(data[1], (byte)2))
                list.Add(FtmsIndoorBikeData.IndoorBikeDataField.MetabolicEquivalent);
            if (ByteExtensions.IsFlagSetAtPosition(data[1], (byte)3))
                list.Add(FtmsIndoorBikeData.IndoorBikeDataField.ElapsedTime);
            if (ByteExtensions.IsFlagSetAtPosition(data[1], (byte)4))
                list.Add(FtmsIndoorBikeData.IndoorBikeDataField.RemainingTime);
            int offset = 2;
            foreach (FtmsIndoorBikeData.IndoorBikeDataField field in list)
                offset += this.ParseField(data, offset, field);
        }

        public void SetUnavailable()
        {
            //throw new NotImplementedException();
        }

        private int ParseField(byte[] attribute, int offset, FtmsIndoorBikeData.IndoorBikeDataField field)
        {
            int fieldSize = FtmsIndoorBikeData.GetFieldSize(field);
            if (attribute.Length < fieldSize + offset)
                throw new ArgumentException("attribute");
            switch (field)
            {
                case FtmsIndoorBikeData.IndoorBikeDataField.InstantaneousSpeed:
                    ICharacteristicExtensions.HandleUshortAttributeValue((ICharacteristic)this, attribute, offset, this._instantSpeedSubject);
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.AverageSpeed:
                    ICharacteristicExtensions.HandleUshortAttributeValue((ICharacteristic)this, attribute, offset, this._averageSpeedSubject);
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.InstantaneousCadence:
                    ICharacteristicExtensions.HandleUshortAttributeValue((ICharacteristic)this, attribute, offset, this._instantCadenceSubject);
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.AverageCadence:
                    ICharacteristicExtensions.HandleUshortAttributeValue((ICharacteristic)this, attribute, offset, this._averageCadenceSubject);
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.TotalDistance:
                    ICharacteristicExtensions.HandleUint24AttributeValue((ICharacteristic)this, attribute, offset, this._totalDistanceSubject);
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.ResistanceLevel:
                    ICharacteristicExtensions.HandleShortAttributeValue((ICharacteristic)this, attribute, offset, this._resistanceLevelSubject);
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.InstantaneousPower:
                    ICharacteristicExtensions.HandleShortAttributeValue((ICharacteristic)this, attribute, offset, this._instantPowerSubject);
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.AveragePower:
                    ICharacteristicExtensions.HandleShortAttributeValue((ICharacteristic)this, attribute, offset, this._averagePowerSubject);
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.ExpendedEnergy:
                    ICharacteristicExtensions.HandleUshortAttributeValue((ICharacteristic)this, attribute, offset, this._totalEnergySubject);
                    ICharacteristicExtensions.HandleUshortAttributeValue((ICharacteristic)this, attribute, offset + 2, this._energyPerHourSubject);
                    ICharacteristicExtensions.HandleByteAttributeValue((ICharacteristic)this, attribute, offset + 4, this._energyPerMinuteSubject);
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.HeartRate:
                    ICharacteristicExtensions.HandleByteAttributeValue((ICharacteristic)this, attribute, offset, this._heartRateSubject);
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.MetabolicEquivalent:
                    ICharacteristicExtensions.HandleByteAttributeValue((ICharacteristic)this, attribute, offset, this._metabolicEquivalentSubject);
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.ElapsedTime:
                    ICharacteristicExtensions.HandleUshortAttributeValue((ICharacteristic)this, attribute, offset, this._elapsedTimeSubject);
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.RemainingTime:
                    ICharacteristicExtensions.HandleUshortAttributeValue((ICharacteristic)this, attribute, offset, this._remainingTimeSubject);
                    break;
            }
            return fieldSize;
        }

        private static int GetFieldSize(FtmsIndoorBikeData.IndoorBikeDataField field)
        {
            int num = 0;
            switch (field)
            {
                case FtmsIndoorBikeData.IndoorBikeDataField.InstantaneousSpeed:
                    num = 2;
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.AverageSpeed:
                    num = 2;
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.InstantaneousCadence:
                    num = 2;
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.AverageCadence:
                    num = 2;
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.TotalDistance:
                    num = 3;
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.ResistanceLevel:
                    num = 2;
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.InstantaneousPower:
                    num = 2;
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.AveragePower:
                    num = 2;
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.ExpendedEnergy:
                    num = 5;
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.HeartRate:
                    num = 1;
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.MetabolicEquivalent:
                    num = 1;
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.ElapsedTime:
                    num = 2;
                    break;
                case FtmsIndoorBikeData.IndoorBikeDataField.RemainingTime:
                    num = 2;
                    break;
            }
            return num;
        }


        private enum IndoorBikeDataField
        {
            InstantaneousSpeed,
            AverageSpeed,
            InstantaneousCadence,
            AverageCadence,
            TotalDistance,
            ResistanceLevel,
            InstantaneousPower,
            AveragePower,
            ExpendedEnergy,
            HeartRate,
            MetabolicEquivalent,
            ElapsedTime,
            RemainingTime,
        }
    }
}