using ZB.MOM.WW.OtOpcUa.Core.Abstractions;

namespace ZB.MOM.WW.OtOpcUa.Driver.FOCAS;

/// <summary>
///     FOCAS atomic data types. Narrower than Logix/IEC — FANUC CNCs expose mostly integer +
///     floating-point data with no UDT concept; macro variables are double-precision floats
///     and PMC reads return byte / signed word / signed dword.
/// </summary>
public enum FocasDataType
{
    /// <summary>Single bit (PMC bit, or bit within a CNC parameter).</summary>
    Bit,
    /// <summary>8-bit signed byte (PMC 1-byte read).</summary>
    Byte,
    /// <summary>16-bit signed word (PMC 2-byte read, or CNC parameter as short).</summary>
    Int16,
    /// <summary>32-bit signed int (PMC 4-byte read, or CNC parameter as int).</summary>
    Int32,
    /// <summary>32-bit IEEE-754 float (rare; some CNC macro variables).</summary>
    Float32,
    /// <summary>64-bit IEEE-754 double (most macro variables are double-precision).</summary>
    Float64,
    /// <summary>ASCII string (alarm text, parameter names, some PMC string areas).</summary>
    String,
}

public static class FocasDataTypeExtensions
{
    public static DriverDataType ToDriverDataType(this FocasDataType t) => t switch
    {
        FocasDataType.Bit => DriverDataType.Boolean,
        FocasDataType.Byte or FocasDataType.Int16 or FocasDataType.Int32 => DriverDataType.Int32,
        FocasDataType.Float32 => DriverDataType.Float32,
        FocasDataType.Float64 => DriverDataType.Float64,
        FocasDataType.String => DriverDataType.String,
        _ => DriverDataType.Int32,
    };
}