namespace InnovEnergy.Lib.Protocols.Modbus.Protocol;

[Flags]
public enum FunctionCode : byte
{
    ReadCoil                   =  1,   ReadCoilError             = ReadCoil             | Error ,
    ReadDiscreteInputs         =  2,   ReadDiscreteInputsError   = ReadDiscreteInputs   | Error ,
    ReadHoldingRegisters       =  3,   ReadHoldingRegistersError = ReadHoldingRegisters | Error ,
    ReadInputRegisters         =  4,   ReadInputRegistersError   = ReadInputRegisters   | Error ,
                                                                               
    WriteSingleCoil            =  5,   WriteSingleCoilError        = WriteSingleCoil        | Error ,
    WriteSingleRegister        =  6,   WriteSingleRegisterError    = WriteSingleRegister    | Error ,
    WriteMultipleCoils         = 15,   WriteMultipleCoilsError     = WriteMultipleCoils     | Error ,
    WriteMultipleRegisters     = 16,   WriteMultipleRegistersError = WriteMultipleRegisters | Error , 
                                                                                
    ReadWriteMultipleRegisters = 23,   ReadWriteMultipleRegistersError = ReadWriteMultipleRegisters | Error ,

    Error = 128
}

public static class FunctionCodeExtensions
{

    public static Boolean IsWriteOnly(this FunctionCode fc)
    {
        return fc == FunctionCode.WriteSingleCoil        ||
               fc == FunctionCode.WriteSingleRegister    ||
               fc == FunctionCode.WriteMultipleCoils     ||
               fc == FunctionCode.WriteMultipleRegisters;
    }

    public static Boolean IsMultiWrite(this FunctionCode fc)
    {
        return fc == FunctionCode.WriteMultipleCoils         ||
               fc == FunctionCode.WriteMultipleRegisters     ||
               fc == FunctionCode.ReadWriteMultipleRegisters;
    }

    public static Boolean IsError(this FunctionCode fc)
    {
        return fc >= FunctionCode.Error;
    }


    // ReSharper disable once BitwiseOperatorOnEnumWithoutFlags
    public static FunctionCode Error(this FunctionCode fc)
    {
        return fc | FunctionCode.Error;
    }
        

}