import json
from pathlib import Path
from typing import Any, Dict, Iterator, List, Tuple

import requests


class GenEvalPrompts:
    def __init__(self):
        super().__init__()
        self._download_geneval_file()
        metadata_path = Path("downloads/geneval/evaluation_metadata.jsonl")
        self.entries: List[Dict[str, Any]] = []
        with open(metadata_path, "r") as f:
            for line in f:
                if line.strip():
                    self.entries.append(json.loads(line))

    def __iter__(self) -> Iterator[Tuple[Dict[str, Any], Path]]:
        for i, entry in enumerate(self.entries):
            folder_name = f"{i:05d}"
            yield entry, folder_name

    def _download_geneval_file(self) -> None:
        folder_name = Path("downloads/geneval")
        folder_name.mkdir(parents=True, exist_ok=True)
        metadata_url = "https://raw.githubusercontent.com/djghosh13/geneval/main/prompts/evaluation_metadata.jsonl"
        metadata_path = folder_name / "evaluation_metadata.jsonl"
        if not metadata_path.exists():
            response = requests.get(metadata_url)
            with open(metadata_path, "w") as f:
                f.write(response.text)

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

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

    @property
    def metrics(self) -> List[str]:
        raise NotImplementedError("GenEval requires custom evaluation, see README.md")