from pathlib import Path
from typing import Iterator, List, Tuple

from datasets import load_dataset


class DrawBenchPrompts:
    def __init__(self):
        self.dataset = load_dataset("shunk031/DrawBench")["test"]

    def __iter__(self) -> Iterator[Tuple[str, Path]]:
        for i, row in enumerate(self.dataset):
            yield row["prompts"], Path(f"{i}.png")

    @property
    def name(self) -> str:
        return "draw_bench"

    @property
    def size(self) -> int:
        return len(self.dataset)

    @property
    def metrics(self) -> List[str]:
        return ["image_reward"]