using System.Diagnostics.CodeAnalysis;
using InnovEnergy.Lib.Devices.Battery48TL.DataTypes;
using InnovEnergy.Lib.Protocols.Modbus.Conversions;
using static InnovEnergy.Lib.Devices.Battery48TL.DataTypes.LedState;
using static InnovEnergy.Lib.Devices.Battery48TL.DataTypes.TemperatureState;

namespace InnovEnergy.Lib.Devices.Battery48TL;

using R = Battery48TlRegisters;

internal static class Parser
{
    internal static Boolean ParseEoc(this R r)
    {
        return r.Leds is
        {
            Green: On, 
            Amber: Off, 
            Blue : Off
        };
    }

    internal static Leds ParseLeds(this R r)
    {
        LedState ParseLed(LedColor led) => (LedState)((r._LedStates >> (Int32)led) & 3);

        return new()
        {
            Blue  = ParseLed(LedColor.Blue),
            Green = ParseLed(LedColor.Green),
            Amber = ParseLed(LedColor.Amber),
            Red   = ParseLed(LedColor.Red),
        };
    }

    internal static Temperatures ParseBatteryTemperatures(this R r) => new()
    {
        Board = r._TemperatureBoard,
        Cells = r.ParseCells(),
        State = r.ParseTemperatureState()
    };

    private static TemperatureState ParseTemperatureState(this R r) => r.Leds switch
    {
        { Green: >= Blinking, Blue: >= Blinking } => Cold,
        _                                         => Operation,
                                                  // TODO: overheated
    };

    private static CellTemperatures ParseCells(this R r) => new()
    {
        Left   = r._TemperatureCellsLeft,
        Right  = r._TemperatureCellsRight,
        Center = r._TemperatureCellsCenter
    };

    internal static Boolean ParseConnectedToDcBus(this R r) => (r._IoStates &  1) == 0;  // inverted
    internal static Boolean ParseHeating         (this R r) => (r._IoStates & 64) != 0;


    [SuppressMessage("ReSharper", "StringLiteralTypo")]
    internal static IEnumerable<String> ParseAlarms(this R data)
    {
        Boolean HasBit(Int16 bit) => (data._AlarmFlags & 1uL << bit) > 0;

        if (HasBit(0) ) yield return "Tam  : BMS temperature too low";
        if (HasBit(2) ) yield return "TaM2 : BMS temperature too high";
        if (HasBit(3) ) yield return "Tbm  : Battery temperature too low";
        if (HasBit(5) ) yield return "TbM2 : Battery temperature too high";
        if (HasBit(7) ) yield return "VBm2 : Bus voltage too low";
        if (HasBit(9) ) yield return "VBM2 : Bus voltage too high";
        if (HasBit(11)) yield return "IDM2 : Discharge current too high";
        if (HasBit(12)) yield return "ISOB : Electrical insulation failure";
        if (HasBit(13)) yield return "MSWE : Main switch failure";
        if (HasBit(14)) yield return "FUSE : Main fuse blown";
        if (HasBit(15)) yield return "HTRE : Battery failed to warm up";
        if (HasBit(16)) yield return "TCPE : Temperature sensor failure";
        if (HasBit(17)) yield return "STRE :";
        if (HasBit(18)) yield return "CME  : Current sensor failure";
        if (HasBit(19)) yield return "HWFL : BMS hardware failure";
        if (HasBit(20)) yield return "HWEM : Hardware protection tripped";
        if (HasBit(21)) yield return "ThM  : Heatsink temperature too high";
        if (HasBit(22)) yield return "vsm1 : String voltage too low";
        if (HasBit(23)) yield return "vsm2 : Low string voltage failure";
        if (HasBit(25)) yield return "vsM2 : String voltage too high";
        if (HasBit(27)) yield return "iCM2 : Charge current too high";
        if (HasBit(29)) yield return "iDM2 : Discharge current too high";
        if (HasBit(31)) yield return "MID2 : String voltage unbalance too high";
        if (HasBit(33)) yield return "CCBF : Internal charger hardware failure";
        if (HasBit(34)) yield return "AhFL :";
        if (HasBit(36)) yield return "TbCM :";
        if (HasBit(37)) yield return "BRNF :";
        if (HasBit(42)) yield return "HTFS : If Heaters Fuse Blown";
        if (HasBit(43)) yield return "DATA : Parameters out of range";
        if (HasBit(45)) yield return "CELL2:";
    }

    [SuppressMessage("ReSharper", "StringLiteralTypo")]
    internal static IEnumerable<String> ParseWarnings(this R data)
    {
        Boolean HasBit(Int16 bit) => (data._WarningFlags & 1uL << bit) > 0;
        
        if (HasBit(1) ) yield return "TaM1: BMS temperature high";
        if (HasBit(4) ) yield return "TbM1: Battery temperature high";
        if (HasBit(6) ) yield return "VBm1: Bus voltage low";
        if (HasBit(8) ) yield return "VBM1: Bus voltage high";
        if (HasBit(10)) yield return "IDM1: Discharge current high";
        if (HasBit(24)) yield return "vsM1: String voltage high";
        if (HasBit(26)) yield return "iCM1: Charge current high";
        if (HasBit(28)) yield return "iDM1: Discharge current high";
        if (HasBit(30)) yield return "MID1: String voltages unbalanced";
        if (HasBit(32)) yield return "BLPW: Not enough charging  power on bus";
        if (HasBit(35)) yield return "Ah_W: String SOC low";
        if (HasBit(38)) yield return "MPMM: Midpoint wiring problem";
        if (HasBit(39)) yield return "TCMM:";
        if (HasBit(40)) yield return "TCdi: Temperature difference between strings high";
        if (HasBit(41)) yield return "WMTO:";
        if (HasBit(44)) yield return "bit44:";
        if (HasBit(46)) yield return "CELL1:";
    }
    
}