using InnovEnergy.Lib.Protocols.Modbus.Protocol.Frames.Accessors;
using InnovEnergy.Lib.Utils;

namespace InnovEnergy.Lib.Protocols.Modbus.Protocol.Frames.Replies;

public class ReadCoilsResponseFrame : ModbusFrame
{
    private new const Int32 MinSize = 3;

    private  MbByte ByteCount => Data.ByteAt(2);
    internal MbBits Coils     => Data.BitsAt(3);

    public ReadCoilsResponseFrame(Byte slave, IReadOnlyList<Boolean> inputs) : base (inputs.Count)
    {
        var nBytes = Math.Ceiling(inputs.Count / 8.0).ConvertTo<UInt16>();
        
        SlaveAddress .Set(slave);
        FunctionCode .Set(Protocol.FunctionCode.ReadCoils);
        ByteCount    .Set(nBytes);    
        Coils        .Set(inputs);
    }
    
    private ReadCoilsResponseFrame(Byte[] data) : this(new ArraySegment<Byte>(data))
    { }


    private ReadCoilsResponseFrame(ArraySegment<Byte> data) : base(data)
    {

        AssertFunctionCode(Protocol.FunctionCode.ReadCoils);
        
        // TODO
        // var expectedSize = ByteCount + MinSize;
        // if (data.Count != expectedSize)
        //     throw new ArgumentException($"Expecting an array of size {expectedSize}", nameof(data));        
        // if (data.Count < MinSize)
        //     throw new ArgumentException($"Expecting an array of size {MinSize} or more", nameof(data));

    }


    public static ReadCoilsResponseFrame Parse(Byte[] data) => new(data);

    public static ReadCoilsResponseFrame Parse(ArraySegment<Byte> data) => new(data);
}