using InnovEnergy.Lib.Protocols.Modbus.Clients;
using InnovEnergy.Lib.Protocols.Modbus.Reflection;

namespace InnovEnergy.Lib.Protocols.Modbus.Slaves;

using Float32 = Single;
using Float64 = Double;

public class ModbusDevice<R> where R : notnull
{
    private readonly IReadOnlyList<Batch<R>> _Batches;

    public ModbusDevice(ModbusClient modbusClient, Int32 addressOffset = 0)
    {
        var offset = addressOffset + Record.GetAddressOffset<R>();
        _Batches   = modbusClient.MakeBatchesFor<R>(offset).ToList();
    }

    public R Read()
    {
        R r;

        try
        {
            r = Activator.CreateInstance<R>();
        }
        catch (Exception e)
        {
            throw new Exception
            (
                $"type {typeof(R).Name} seems to lack a parameterless constructor. " +
                $"Either create one or use the other overload of{nameof(Read)} instead.",
                e
            );
        }

        return Read(r);
    }

    public R Read(R record) 
    {
        foreach (var batch in _Batches)
            batch.Read(record);

        return record;
    }

    public void Write(R record)
    {
        foreach (var batch in _Batches)
            batch.Write(record);
    }
}