from __future__ import absolute_import
from .cifar import load_batch
from ..utils.data_utils import get_file
import numpy as np
import os


def load_data():
    dirname = "cifar-10-batches-py"
    origin = "http://www.cs.toronto.edu/~kriz/cifar-10-python.tar.gz"
    path = get_file(dirname, origin=origin, untar=True)

    nb_train_samples = 50000

    X_train = np.zeros((nb_train_samples, 3, 32, 32), dtype="uint8")
    y_train = np.zeros((nb_train_samples,), dtype="uint8")

    for i in range(1, 6):
        fpath = os.path.join(path, 'data_batch_' + str(i))
        data, labels = load_batch(fpath)
        X_train[(i-1)*10000:i*10000, :, :, :] = data
        y_train[(i-1)*10000:i*10000] = labels

    fpath = os.path.join(path, 'test_batch')
    X_test, y_test = load_batch(fpath)

    y_train = np.reshape(y_train, (len(y_train), 1))
    y_test = np.reshape(y_test, (len(y_test), 1))

    return (X_train, y_train), (X_test, y_test)
