from typing import Optional

import numpy as np
import torch
from torch.utils.data import DataLoader, TensorDataset


def get_dataloader(inputs: np.ndarray, targets: np.ndarray, device: Optional[torch.device] = None,
                   batch_size: int = 64) -> DataLoader:
    input_tensor = torch.tensor(inputs).float()
    target_tensor = torch.tensor(targets).float()
    if device is not None:
        input_tensor = input_tensor.to(device)
        target_tensor = target_tensor.to(device)

    dataset = TensorDataset(input_tensor, target_tensor)
    loader = DataLoader(dataset, batch_size=batch_size)
    return loader