using System;
using System.Collections.Generic;
using System.Text;
using System.Threading.Tasks;
using Wayne.FDCPOSLibrary;

namespace Edge.Core.IndustryStandardInterface.ATG
{
    /// <summary>
    /// Aka ATG.
    /// A Tank Level Gauge connects to one or more (maximum 31) Tank Probes. 
    /// A Tank Probe is the item of forecourt equipment which is capable of 
    ///     measuring the level of product in a tank and hence volume can be calculated. 
    /// Each Tank Probe (TP) represents a tank. The unique identifier is the Unit Number. 
    ///     There are real tank probes and virtual tank probes. A virtual tank probe describes a tank without a physical probe installed.  Parent device of a TP device is a TLG. 
    /// </summary>
    public interface IAutoTankGaugeController
    {
        /// <summary>
        /// Fired once ATG connection changed.
        /// <see cref="Tanks"/> may change.
        /// </summary>
        event EventHandler<AtgStateChangeEventArg> OnStateChange;
        event EventHandler<AtgAlarmEventArg> OnAlarm;

        /// <summary>
        /// Gets the name of this implementation of ATG, most used for descriptive purpose.
        /// </summary>
        string MetaConfigName { get; }

        /// <summary>
        /// Fc internal asigned id for identify this device.
        /// </summary>
        int DeviceId { get; }

        /// <summary>
        /// Gets the Tank readings of this implementation of ATG 
        /// </summary>
        IEnumerable<Tank> Tanks { get; }

        /// <summary>
        /// Gets the state of the controller.
        /// </summary>
        AtgState State { get; }

        /// <summary>
        /// Read one reading for a tank.
        /// </summary>
        /// <param name="tankNumber"></param>
        /// <returns></returns>
        Task<TankReading> GetTankReadingAsync(int tankNumber);

        /// <summary>
        /// Read readings for all tanks.
        /// </summary>
        /// <returns>readings for all tanks</returns>
        Task<IEnumerable<TankReading>> GetTanksReadingAsync();
        
        /// <summary>
        /// read tank delivery info.
        /// </summary>
        /// <param name="tankNumber"></param>
        /// <param name="pageRowCount"></param>
        /// <param name="pageIndex"></param>
        /// <param name="filterTimestamp">only the records have the timestamp more recent will returned.</param>
        /// <returns></returns>
        Task<IEnumerable<Delivery>> GetTankDeliveryAsync(int tankNumber, int pageRowCount = 10, int pageIndex = 0, DateTime? filterTimestamp = null);

        /// <summary>
        /// read tank Inventory info. 
        /// </summary>
        /// <param name="tankNumber"></param>
        /// <param name="pageRowCount"></param>
        /// <param name="pageIndex"></param>
        /// <param name="filterTimestamp">only the records have the timestamp more recent will returned.</param>
        /// <returns></returns>
        Task<IEnumerable<Inventory>> GetTankInventoryAsync(int tankNumber, int pageRowCount = 10, int pageIndex = 0, DateTime? filterTimestamp = null);

        /// <summary>
        /// read tank Alarm history info. 
        /// </summary>
        /// <param name="tankNumber"></param>
        /// <param name="pageRowCount"></param>
        /// <param name="pageIndex"></param>
        /// <param name="filterTimestamp"></param>
        /// <returns></returns>
        Task<IEnumerable<Alarm>> GetTankAlarmAsync(int tankNumber, int pageRowCount = 10, int pageIndex = 0, DateTime? filterTimestamp = null);

        /// <summary>
        /// Gets the console's SystemUnit setting value.
        /// 
        ///             Length
        /// Metric                  US or Imperial
        /// 1 millimeter [mm]	=    0.03937 inches [in]
        /// 1 centimeter [cm]   =    0.3937 inches [in]   
        /// 1 meter [m]         =    1.0936 yard [yd]
        /// 1 kilometer [km]    =    0.6214 mile
        /// 
        ///                          1 yard [yd] =	3 ft
        ///                          1 mile	     =  1760 yd
        /// 2.54 cm             =    1 inch [in]
        /// 0.3048 m            =    1 foot [ft] = 12 in
        /// 
        ///             Volume/Capacity
        /// 1 cu cm [cm3]            0.0610 in3     
        /// 1 cu decimeter [dm3] = 1,000 cm3        0.0353 ft3
        /// 1 cu meter [m3]	1,000 dm3       1.3080 yd3
        /// 1 liter [l] = 1 dm3         2.113 fluid pt = 1.7598 pt
        /// </summary>
        SystemUnit SystemUnit { get; }
    }

    public class Alarm
    {
        public Alarm() { }
        public Alarm(AlarmPriority priority, AlarmType type)
        {
            this.Priority = priority;
            this.Type = type;
        }

        public int Id { get; set; }
        public AlarmPriority Priority { get; set; }

        /// <summary>
        /// This Alarm is for which tank.
        /// </summary>
        public byte TankNumber { get; set; }

        public AlarmType Type { get; set; }

        public DateTime CreatedTimeStamp { get; set; }

        /// <summary>
        /// the fix time of this alarm.
        /// </summary>
        public DateTime? ClearedTimeStamp { get; set; }
        public string Description { get; set; }
    }

    public enum AlarmPriority
    {
        /// <summary>
        /// need take a look when available.
        /// </summary>
        Warning,

        /// <summary>
        /// need take a look right now.
        /// </summary>
        Alarm,
    }

    /// <summary>
    /// logical concept.
    /// </summary>
    public class Tank
    {
        /// <summary>
        /// Gets or sets the tank number which assigned in device internal
        /// </summary>
        public byte TankNumber { get; set; }

        /// <summary>
        /// descriptive info for this Tank.
        /// </summary>
        public string Label { get; set; }

        public Product Product { get; set; }

        public TankLimit Limit { get; set; }
        /// <summary>
        /// by mm.
        /// </summary>
        public double? Diameter { get; set; }

        /// <summary>
        /// </summary>
        public TankState State { get; set; }

        public Probe Probe { get; set; }

        public override string ToString()
        {
            return $"Tank with No.: {TankNumber} has Label: {Label ?? ""}, ProductCode: {Product?.ProductCode ?? ""}, ProductLabel: {Product?.ProductLabel ?? ""}";
        }
    }

    public class TankLimit
    {

        /// <summary>
        /// The max volume of this tank can safely save material, by Liter.
        ///     by considering the material expansion along with temp rise, the Max volume must less than Full Volume.
        /// </summary>
        public double MaxVolume { get; set; }

        /// <summary>
        /// 100% volume of this tank, by Liter.
        /// </summary>
        public double FullVolume { get; set; }

        /// <summary>
        /// % of the Max Volume, typical value 0.9
        ///     above this value will trigger high product alarm.
        /// </summary>
        public double HighProduct { get; set; }

        /// <summary>
        /// Liter of the low product threashold value, by Liter, typical value 30.
        ///     lower thatn this value will trigger low product alarm.
        /// </summary>
        public double LowProduct { get; set; }


        /// <summary>
        /// mm of the high water warning threashold value, by mm, typical value 100.
        ///     higher than this value will trigger high water warning.
        /// </summary>
        public double HighWaterWarning { get; set; }

        /// <summary>
        /// mm of the high water alarm threashold value, by mm, typical value 125.
        ///     higher than this value will trigger high water alarm.
        /// </summary>
        public double HighWaterAlarm { get; set; }

        /// <summary>
        /// by centigrade(celsius), typical value -50
        /// </summary>
        public double FuelTemperatureLowLimit { get; set; }

        /// <summary>
        /// by centigrade(celsius), typical value 60
        /// </summary>
        public double FuelTemperatureHighLimit { get; set; }
    }

    public class Product
    {
        /// <summary>
        /// 
        /// </summary>
        public string ProductCode { get; set; }

        /// <summary>
        /// descriptive info for the product.
        /// </summary>
        public string ProductLabel { get; set; }
    }

    /// <summary>
    /// represents a physical hardware of a probe, which used to measure liquid depth.
    /// </summary>
    public class Probe
    {
        /// <summary>
        /// unique in a ATG system.
        /// </summary>
        public int DeviceId { get; set; }

        /// <summary>
        /// hardware id, serial number? mac?
        /// </summary>
        public string HardwareIdentity { get; set; }


        /// <summary>
        /// phsycial length of the probe hardware, by mm.
        /// </summary>
        public double? ProbeLength { get; set; }

        /// <summary>
        /// the lowest point of the probe may not reached the bottom of the tank, this is the length of this distance.
        ///     the fuel and water height readings will combine with this value before send out for ATG client applications.
        /// </summary>
        public double ProbeOffset { get; set; }

        /// <summary>
        /// user may want to 'hidden' some water in a tank, this is the value of the water height reading need to be substracted.
        /// </summary>
        public double WaterOffset { get; set; }

        /// <summary>
        /// may device manufactor dependency.
        /// </summary>
        public string State { get; set; }
    }

    public class ProbeReading
    {
        /// <summary>
        /// Fuel Height is the depth of all liquid in the tank in inches or millimeters.
        /// </summary>
        public double? Height { get; set; }

        /// <summary>
        /// Water Height is the depth of the water in the tank.  
        /// Note: If you are using high alcohol probes that cannot detect water, Water Height will not appear on the display or the printed reports.
        /// </summary>
        public double? Water { get; set; }

        public IEnumerable<double> Temperature { get; set; }

        public double? Density { get; set; }
    }

    public class TankReading
    {
        public int? TankNumber { get; set; }

        /// <summary>
        /// Fuel Volume in tank, by Liter.
        /// </summary>
        public double? Volume { get; set; }

        /// <summary>
        /// Gets or sets the value of Temperature Compensated Volume.
        /// The product in the tank expands and contracts with temperature. 
        /// The colder the temperature, the more the product will contract. 
        /// The higher the temperature, the more the product will expand. 
        /// Temperature Compensated Volume is at 60 degrees Fahrenheit, unless your system was programmed to use another temperature value.
        /// Note: If Temperature Compensated Volume was set to “Disable” using the System Setup function, 
        ///     you will not be able to print the Temperature Compensated Volume on the report.
        /// </summary>
        public double? TcVolume { get; set; }

        /// <summary>
        /// Ullage is the amount of room left in the tank. Normally, 
        ///     a tank is not totally full, this is done so that the product has some room to expand.
        /// you can't fill the tank with full product which may cause problem, like when temperature get warmer,
        ///     the product will expand.
        /// </summary>
        public double? Ullage { get; set; }

        /// <summary>
        /// Water Volume is the amount of water in the tank in gallons or liters.  
        /// Note: If you are using high alcohol probes, Water Volume will not appear in the display or the printed reports.
        /// </summary>
        public double? WaterVolume { get; set; }

        #region values read from real physical probe, all other business are actually rely on these hardware readings

        /// <summary>
        /// Fuel Height is the depth of all liquid in the tank in inches or millimeters.
        /// </summary>
        public double? Height { get; set; }

        /// <summary>
        /// Water Height is the depth of the water in the tank.  
        /// Note: If you are using high alcohol probes that cannot detect water, Water Height will not appear on the display or the printed reports.
        /// </summary>
        public double? Water { get; set; }
        public double? Temperature { get; set; }

        public double? Density { get; set; }

        #endregion

        public override string ToString()
        {
            return "Product Height: " + (this?.Height ?? -1) +
                    ", Product Volume: " + (this.Volume ?? -1) +
                     ", Product TcVolume Volume: " + (this.TcVolume ?? -1) +
                   ", Water Height: " + (this?.Water ?? -1) +
                   ", Temperature: " + (this?.Temperature ?? -1) +
                   ", Density: " + (this?.Density ?? -1);
        }
    }



    public enum SystemUnit
    {
        US = 1,
        Metric = 2,
        ImperialGallons = 3,
    }

    public enum SystemLanguage
    {
        English = 1,
        French = 2,
        Spanish = 3,
        German = 4,
        Portuguese = 5,
        Polish = 6,
        Swedish = 7,
        Janpanese = 8,
        Finnish = 9,
    }

    public enum AlarmType
    {

        #region VeederRoot defined

        TankSetupDataWarning = 1,
        TankLeakAlarm = 2,
        TankHighWaterAlarm = 3,
        TankOverfillAlarm = 4,
        TankLowProductAlarm = 5,
        TankSuddenLossAlarm = 6,
        TankHighProductAlarm = 7,
        TankInvalidFuelLevelAlarm = 8,
        TankProbeOutAlarm = 9,
        TankHighWaterWarning = 10,
        TankDeliveryNeededWarning = 11,
        TankMaximumProductAlarm = 12,
        TankGrossLeakTestFailAlarm = 13,
        TankPeriodicLeakTestFailAlarm = 14,
        TankAnnualLeakTestFailAlarm = 15,
        TankPeriodicTestNeededWarning = 16,
        TankAnnualTestNeedWarning = 17,
        TankPeriodicTestNeededAlarm = 18,
        TankAnnualTestNeededAlarm = 19,
        TankLeakTestActive = 20,
        TankNoCsldIdleTimeWarning = 21,
        TankSiphonBreakActiveWarning = 22,
        TankCsldRateIncreaseWarning = 23,
        TankAccuChartCalibrationWarning = 24,
        TankHrmReconciliationWarning = 25,
        TankHrmReconciliationAlarm = 26,
        TankColdTemperatureWarning = 27,
        TankMissingDeliveryTicketWarning = 28,
        TankLineGrossLeakAlarm = 29,


        //Shawn added
        TankHighTemperatureWarning = 5000,

        #endregion

    }

    public enum DeliveryReadingDataName
    {
        StartingVolume = 1,
        StartingTcVolume = 2,
        StartingWater = 3,
        StartingTemp = 4,
        EndingVolume = 5,
        EndingTcVolume = 6,
        EndingWater = 7,
        EndingTemp = 8,
        StartingHeight = 9,
        EndingHeight = 10,
    }

    public class Delivery
    {
        public byte TankNumber { get; set; }

        public DateTime StartingDateTime { get; set; }
        public double StartingFuelHeight { get; set; }
        public double StartingFuelVolume { get; set; }
        public double StartingFuelTCVolume { get; set; }
        public double StartingWaterHeight { get; set; }
        public double StartingTemperture { get; set; }


        public DateTime? EndingDateTime { get; set; }
        public double? EndingFuelHeight { get; set; }
        public double? EndingFuelVolume { get; set; }
        public double? EndingFuelTCVolume { get; set; }
        public double? EndingWaterHeight { get; set; }
        public double? EndingTemperture { get; set; }

        public string Description { get; set; }
    }

    public class Inventory
    {
        public int TankNumber { get; set; }

        public DateTime TimeStamp { get; set; }
        public double FuelHeight { get; set; }
        public double FuelVolume { get; set; }
        public double FuelTCVolume { get; set; }

        public double WaterHeight { get; set; }

        public double Temperture { get; set; }

        public string Description { get; set; }
    }
}