using DASFactoryDb.Download;
using DTS.Common.Interface.DASFactory;
using DTS.Common.Interface.DASFactory.Config;
using DTS.Common.Interface.DASFactory.Download;
using DTS.Common.Interface.DownloadEvent;
using DTS.Common.Utilities.Logging;
using System;
using System.Data.SqlClient;
using System.Data.SqlTypes;
using System.IO;
using System.Text;
using System.Xml;

namespace DTS.DASLib.Service
{

    /// <summary>
    /// This class represent all events stored on the DAS.  It is populated during
    /// <see cref="DownloadService.QueryDownload" />.
    /// </summary>
    public class DownloadReport : IDownloadReport
    {
        /// <summary>
        /// This class represent one event/test.
        /// </summary>
        public class EventInfo : IEventInfo
        {
            /// <summary>
            /// Information about each module that was part of the event.  Addressable by
            /// ModuleArrayIndex of the corresponding module.
            /// </summary>
            public IDASModule[] Modules { get; set; }

            /// <summary>
            /// The event number this information is regarding.
            /// </summary>
            public int EventNumber { get; set; }

            /// <summary>
            /// The GUID of the corresponding event.
            /// </summary>
            public Guid TestGUID { get; set; }

            /// <summary>
            /// Fault flags (if any)
            /// </summary>
            public ushort FaultFlags { get; set; }
            /// <summary>
            /// fault flags extended (if any)
			/// </summary>
            public ushort FaultFlagsEx { get; set; }

            /// <summary>
            /// Arm Attempts (if any)
            /// </summary>
            public byte ArmAttempts { get; set; }
            /// <summary>
            /// The timestamp of this event.
            /// </summary>
            public DateTime TestTime { get; set; }

            /// <summary>
            /// The ID of this event.
            /// </summary>
            public string TestID { get; set; }

            /// <summary>
            /// A text description that was stored.
            /// </summary>
            public string Description { get; set; }

            /// <summary>
            /// True if this event has already been downloaded.
            /// </summary>
            public bool HasBeenDownloaded { get; set; }

            /// <summary>
            /// True if this event received a trigger.
            /// </summary>
            public bool WasTriggered { get; set; }
            /// <summary>
            /// clears any fault flags
            /// </summary>
            public void ClearFaults()
            {
                FaultFlags = 0;
                FaultFlagsEx = 0;
            }
            public EventInfo() { }
            public EventInfo(EventInfo copy)
            {
                Modules = copy.Modules;

                EventNumber = copy.EventNumber;

                TestGUID = copy.TestGUID;

                FaultFlags = copy.FaultFlags;
                FaultFlagsEx = copy.FaultFlagsEx;

                ArmAttempts = copy.ArmAttempts;
                TestTime = copy.TestTime;

                TestID = copy.TestID;

                Description = copy.Description;

                HasBeenDownloaded = copy.HasBeenDownloaded;

                WasTriggered = copy.WasTriggered;
            }
        }

        /// <summary>
        /// This class represent one event/test.
        /// </summary>
        public class UARTEventInfo : IUARTEventInfo
        {
            /// <summary>
            /// From which event do we want to download data?
            /// </summary>
            public ushort EventNumber { get; set; }

            /// <summary>
            /// Is data present?
            /// </summary>
            public bool DataPresent { get; set; }

            /// <summary>
            /// Has data already been downloaded?
            /// </summary>
            public bool DataDownloaded { get; set; }

            /// <summary>
            /// How much data is there?
            /// </summary>
            public ulong TotalByteCount { get; set; }

            /// <summary>
            /// Where in the data did the trigger occur?
            /// </summary>
            public ulong TriggerByteCount { get; set; }
            /// <summary>
            /// Where are the faults?
            /// </summary>
            public ulong FaultByteCount { get; set; }

            /// <summary>
            /// When did the UART stream start?
            /// </summary>
            public ulong StartTimestamp { get; set; }

            /// <summary>
            /// When did the UART stream end?
            /// </summary>
            public ulong EndTimestamp { get; set; }

            /// <summary>
            /// What was the baud rate during UART recording?
            /// </summary>
            public uint BaudRate { get; set; }
        }

        /// <summary>
        /// An array of all events stored on this DAS.
        /// </summary>
        public IEventInfo[] Events { get; set; }

        /// <summary>
        /// An array of all UART events stored on this DAS.
        /// </summary>
        public IUARTEventInfo[] UARTEvents { get; set; }

        public static void SetEventDownloadStatus(IDASCommunication das, bool[] status, bool bStoreInDb)
        {
            if (null == das) { return; }
            das.EventDownloadedStatus = status;
            if (!bStoreInDb || !DASFactoryDb.DbWrapper.Connected) { return; }

            try
            {
                Download.ClearExistingEventDownloadStatus(das.RecordId);
                if (null == status) { return; }
                foreach (var statum in status)
                {
                    Download.InsertEventDownloadStatus(das.RecordId, statum);
                }
            }
            catch (Exception ex)
            {
                APILogger.Log(ex);
            }
        }
        public static void SetEventArmAttempts(IDASCommunication das, byte[] armAttempts, bool storeInDb)
        {
            if (null == das) { return; }
            das.ArmAttempts = armAttempts;

            if (!storeInDb || !DASFactoryDb.DbWrapper.Connected) { return; }

            try
            {
                Download.ClearExistingEventArmAttempts(das.RecordId);
                if (null == armAttempts) { return; }
                foreach (byte armAttempt in armAttempts)
                {
                    Download.InsertEventArmAttempts(das.RecordId, armAttempt);
                }
            }
            catch (Exception ex)
            {
                APILogger.Log(ex);
            }
        }
        public static void SetEventFaultFlags(IDASCommunication das, ushort[] faultFlags, bool storeInDb)
        {
            if (null == das) { return; }
            das.FaultFlags = faultFlags;
            if (!storeInDb || !DASFactoryDb.DbWrapper.Connected) { return; }

            try
            {
                Download.ClearExistingFaultFlags(das.RecordId);
                if (null == faultFlags) { return; }
                foreach (var flag in faultFlags)
                {
                    Download.InsertEventFaultFlags(das.RecordId, flag);
                }
            }
            catch (Exception ex)
            {
                APILogger.Log(ex);
            }
        }

        public static void SetEventInfo(IDASCommunication das, IDownloadReport eventInfo, bool storeInDB)
        {
            if (null == das) { return; }
            das.EventInfo = eventInfo;
            if (!storeInDB || !DASFactoryDb.DbWrapper.Connected) { return; }

            try
            {
                Download.ClearExistingDownloadReports(das.RecordId);
                if (null == eventInfo || null == eventInfo.Events) { return; }
                foreach (var eventData in eventInfo.Events)
                {
                    InsertEventInfo(das, eventData);
                }
            }
            catch (Exception ex)
            {
                APILogger.Log(ex);
            }
        }

        private static void InsertEventInfo(IDASCommunication das, IEventInfo eventInfo)
        {
            try
            {
                if (null == eventInfo || null == das)
                {
                    return;
                }
                var xml = string.Empty;
                using (var sw = new StringWriter())
                {
                    using (var xw = XmlWriter.Create(sw,
                        new XmlWriterSettings() { ConformanceLevel = ConformanceLevel.Document }))
                    {
                        xw.WriteStartDocument();
                        xw.WriteStartElement("Modules");
                        foreach (var mod in eventInfo.Modules)
                        {
                            mod.WriteXml(xw);
                        }

                        xw.WriteEndElement();
                        xw.WriteEndDocument();
                    }
                    sw.Flush();
                    xml = sw.ToString();
                }

                Download.InsertEventInfo(das.RecordId,
                    eventInfo.EventNumber,
                    eventInfo.TestGUID,
                    eventInfo.FaultFlags,
                    eventInfo.ArmAttempts,
                    eventInfo.TestTime,
                    eventInfo.TestID,
                    eventInfo.Description,
                    eventInfo.HasBeenDownloaded,
                    eventInfo.WasTriggered,
                    xml
                );
            }
            catch (Exception ex)
            {
                APILogger.Log(ex);
            }
        }
        public static void SetEventGuids(IDASCommunication das, Guid[] guids, bool storeInDb)
        {
            if (null == das) { return; }
            das.EventGuids = guids;
            if (!storeInDb || !DASFactoryDb.DbWrapper.Connected) { return; }

            try
            {
                Download.ClearExistingEventGuids(das.RecordId);
                if (null == guids) { return; }
                foreach (var guid in guids)
                {
                    Download.EventGuidInsert(das.RecordId, guid);
                }
            }
            catch (Exception ex)
            {
                APILogger.Log(ex);
            }
        }
    }
}