///
/// Copyright (c) 2013-2023 Sensus Slovensko a.s.
///
using System;
using System.Collections.Generic;
using log4net;
using Config.Entities;
using TBF.Boxes;
using TBF.Resources;
using TBF.UI.Calendar;

namespace TBF.Rig.Elde.FlowMeter
{
    public class FlowMeter : ComponentBase, Generic.IDevice, GenericDevices.IFlowMeter, GenericDevices.IHasCalendarEvents
	{
		private static readonly ILog log = LogManager.GetLogger(typeof(FlowMeter));
        public override string ToString() { return string.Format("{0}({1})", ClassName, Cfg.ToString(-1)); }

		readonly FlowMeterCfg flowMeterCfg;
        readonly ControlBoardDev controlBoard;

        public int Idx1 { get { return flowMeterCfg.Idx1; } }
        public double NominalFlow { get { return flowMeterCfg.NominalFlow; } }
        public double LtrPerPulse { get { return flowMeterCfg.NominalFlow / 7200.0; } } /// Nominal frequency is 2000 Hz

        public double LtrPerPulseCorrected(double flow, int rangeIx)
        {
            if (flow == 0) return LtrPerPulse;      /// To avoid division by zero

            /// Apply correction
            var rangeCorrections = new List<MeasurementCorrection>();
            foreach (var corr in Corrections)
            {
                if (corr.RangeIx == rangeIx) rangeCorrections.Add(corr);
            }
            double correctedFlow = MeasurementCorrection.CorrectedValue(flow, rangeCorrections);
            return (LtrPerPulse * correctedFlow / flow);
        }


        public bool RangeEnabled(int ix) { return flowMeterCfg.RangeEnabled(ix); }
        public double GetTempLo(int ix) { return flowMeterCfg.GetTempLo(ix); }
        public double GetTempHi(int ix) { return flowMeterCfg.GetTempHi(ix); }
        public double GetPressLo(int ix) { return flowMeterCfg.GetPressLo(ix); }
        public double GetPressHi(int ix) { return flowMeterCfg.GetPressHi(ix); }


		public FlowMeter() { }

		public FlowMeter(Generic.IComponentCfg cfg, IList<Generic.IComponent> components)
			: base(cfg)
		{
			flowMeterCfg = cfg as FlowMeterCfg;

			controlBoard = (ControlBoardDev)TbfComponents.FindComponent(cfg.ParentName, components);
			if (controlBoard == null) throw new Exception("Cannot find " + Name + " parent");

			/// Prepare data for SendCalibData() control board component method
            if (Idx1 < controlBoard.EtCalib.Length)
            {
                controlBoard.EtCalib[Idx1] = (float)flowMeterCfg.NominalFlow;
            }
		}

        ///
        /// IDevice interface functions
        ///
        public override void Initialize()
        {
            for (int r = 0; r <= 5; r++)
            {
                if (RangeEnabled(r) && flowMeterCfg.GetCalibValidDate(r) > DateTime.MinValue
                                    && flowMeterCfg.GetCalibValidDate(r).Date < DateTime.Now.Date)
                {
                    throw new Exception(string.Format("{0}/r{1}: {2}", Name, r, Strings.Calibration_certificate_validity_expired));
                }
            }

            log.FatalFormat("{0} initialized: {1}", Name, this);
        }

        public void RunDeviceBefore() { }
        public void RunDeviceAfter() { }
        public void StopDevice() { }
        public void StopDevice2() { }

        /// 
        /// Calendar support
        ///
        public List<Config.CalendarEvent.ICalendarEvent> GetCalendarEvents()
        {
            var calEvents = new List<Config.CalendarEvent.ICalendarEvent>();

            DateTime calibDue = flowMeterCfg.CalibValidDate;
            if (calibDue > TBF.UI.Constants.MinDate)
            {
                /// Five weekly notifications
                foreach (var days in new int[] { -35, -28, -21, -14 })
                {
                    if (calibDue.Date.AddDays(days + 6) >= DateTime.Now.Date)
                    {
                        calEvents.Add(new CalibrationReminderEvent(Config.CalendarEvent.AutoAction.Notification,
                                                                   calibDue.Date.AddDays(days),
                                                                   Name,
                                                                   string.Format(Strings.Calibration_due_date_is_0,
                                                                                 calibDue.Date.ToString(TBF.UI.Constants.DateFormat))));
                    }
                }

                /// Five daily warnings
                foreach (var days in new int[] { -7, -6, -5, -4, -3, -2, -1 })
                {
                    if (calibDue.Date.AddDays(days) >= DateTime.Now.Date)
                    {
                        /// Weekly reminders (last 5 weeks)
                        calEvents.Add(new CalibrationReminderEvent(Config.CalendarEvent.AutoAction.Warning,
                                                                   calibDue.Date.AddDays(days),
                                                                   Name,
                                                                   string.Format(Strings.Calibration_due_date_is_0,
                                                                                 calibDue.Date.ToString(TBF.UI.Constants.DateFormat))));
                    }
                }

                /// Calibration due date
                if (calibDue.Date >= DateTime.Now.Date)
                {
                    calEvents.Add(new CalibrationDueDateEvent(calibDue.Date,
                                                              Name,
                                                              string.Format(Strings.Calibration_due_date_is_0,
                                                                            calibDue.Date.ToString(TBF.UI.Constants.DateFormat))));
                }
            }

            return calEvents;
        }


        public double ReadFlow()      { return controlBoard.ReferenceFlow; }
        public double ReadFrequency() { return controlBoard.ReferenceFreq; }

		/// <summary>
		/// Events:  FlowDone, Error
		/// </summary>
		/// <param name="flow">Reference to a variable for the flow in Bar</param>
		/// <returns>ReadFlowOp instance reference casted to IOperaton</returns>
		public IOperation ReadFlowOp(ref DoubleBox flow)
		{
			return new ReadFlowOp(this, controlBoard, ref flow);
		}

		/// <summary>
		/// Events:  flowDone, Error
		/// </summary>
		/// <param name="flow">Reference to a variable for the flow in Bar</param>
		/// <param name="flowDone">Event returned when measurement done</param>
		/// <returns>ReadFlowOp instance reference casted to IOperaton</returns>
		public IOperation ReadFlowOp(ref DoubleBox flow, Event flowDone)
		{
			return new ReadFlowOp(this, controlBoard, ref flow, flowDone);
		}
	}
}