using DASFactoryDb.Download;
using DTS.Common.Interface.DASFactory;
using DTS.Common.Interface.DASFactory.Download;
using DTS.Common.Utilities.Logging;
using System;

namespace DTS.DASLib.Service
{
    /// <summary>
    /// This class describes what should be downloaded from the DAS to the PC.
    /// </summary>
    public class DownloadRequest : IDownloadRequest
    {
        /// <summary>
        /// Setting the DASChannelNumber property of this object to this constant value will 
        /// download all channels from the DAS.  Currently, this is the only option that is supported
        /// so DASChannelNumber MUST be equal to this value.
        /// </summary>
        public const byte ALL_CHANNELS = 0xFF;

        /// <summary>
        /// From which event do we want to download data?
        /// </summary>
        public ushort EventNumber { get; set; }

        /// <summary>
        /// Which channel? (set to ALL_CHANNELS for all)
        /// </summary>
        public byte DASChannelNumber { get; set; }

        /// <summary>
        /// The first sample you want.
        /// </summary>
        public virtual ulong StartSample { get; set; }

        /// <summary>
        /// The last sample you want.
        /// </summary>
        public virtual ulong EndSample { get; set; }

        /// <summary>
        /// This is used for sub-sampling data, 0 (or 1) means don't sub-sample, 2 means 
        /// give me every other sample and so on. The number of samples requested 
        /// (EndSample-StartSample+1) must be an multiple of SamplesToSkip.
        /// </summary>
        public ulong SamplesToSkip { get; set; }

        /// <summary>
        /// 
        /// </summary>
        public double StartRecordTimestampSec { get; set; }

        /// <summary>
        /// 
        /// </summary>
        public double TriggerTimestampSec { get; set; }

        /// <summary>
        /// 
        /// </summary>
        public double StartRecordTimestampNanoSec { get; set; }

        /// <summary>
        /// 
        /// </summary>
        public double TriggerTimestampNanoSec { get; set; }

        /// <summary>
        /// 
        /// </summary>
        public bool PTPMasterSync { get; set; }

        public static void SetWhatToDownload(IDASCommunication das, IDownloadRequest request, bool bSetInDb)
        {
            if (null != request)
            {
                APILogger.Log($"WhatToDownload = Event: {request.EventNumber}, StartSample: {request.StartSample}, EndSample: {request.EndSample}");
            }
            das.WhatToDownload = request;
            if (!bSetInDb || !DASFactoryDb.DbWrapper.Connected) { return; }

            try
            {
                Download.ClearExistingDownloadRequests(das.RecordId);
                if (null != request)
                {
                    Download.DownloadRequestInsert(das.RecordId,
                        request.EventNumber,
                        request.DASChannelNumber,
                        request.StartSample,
                        request.EndSample,
                        request.SamplesToSkip,
                        request.StartRecordTimestampSec,
                        request.TriggerTimestampSec,
                        request.StartRecordTimestampNanoSec,
                        request.TriggerTimestampNanoSec,
                        request.PTPMasterSync);
                }
            }
            catch (Exception ex)
            {
                APILogger.Log(ex);
            }
        }
    }
}