using Sick.SafetyScanners.DataStructures;
using Sick.SafetyScanners.Helpers;

namespace Sick.SafetyScanners.DataProcessing;

/// <summary>
/// Parser for DeviceStatus response from COLA2 variable command
/// Thread-safe implementation
/// </summary>
public sealed class ParseDeviceStatus
{
    /// <summary>
    /// Parses the device status from a TCP sequence (COLA2 response)
    /// Matches: ParseDeviceStatusData::parseTCPSequence in C++
    /// </summary>
    public DeviceStatus ParseTcpSequence(PacketBuffer buffer)
    {
        var span = buffer.GetBufferSpan();
        return new DeviceStatus
        {
            Status = (SopasDeviceStatus)ReadDeviceStatus(span)
        };
    }
    
    /// <summary>
    /// Matches: ParseDeviceStatusData::readDeviceStatus in C++
    /// </summary>
    private byte ReadDeviceStatus(ReadOnlySpan<byte> span)
    {
        return ReadWriteHelper.ReadUint8(span, 0);
    }
}