import os
from torchvision import datasets
from torch.utils.data import Dataset
import torch
from .Data import Data

class CasiaSet(Data):
    def __init__(self, resolution: int = 224, sample_size = 190):
        super().__init__(resolution = resolution, sample_size = sample_size)

    def get_set(self) -> Data:
        path_str = "./datasets/casia-set"
        path = os.path.abspath(path_str)

        if not os.path.exists(path):
            raise FileNotFoundError(f"Unpacked dataset missing at {self.final_path}. Run Extractor.py first!")
        print(f"Loading unpacked CASIA dataset from: {self.final_path}")
        set = datasets.ImageFolder(root=path, transform=None)
        # we set the target here
        self.target = torch.tensor(set.targets)
        return set