"""Unified HuggingFace dataset operations"""

import json
from pathlib import Path
from datasets import Dataset, load_dataset

class HFDataManager:
    """Handles all HuggingFace dataset loading and saving operations"""
    
    @staticmethod
    def load_from_hf(hf_repo):
        """Load data from HuggingFace dataset repository"""
        try:
            dataset = load_dataset(hf_repo, split="train")
            return dataset.to_list()
        except Exception:
            # Return empty list if dataset doesn't exist or can't be loaded
            return []
    
    @staticmethod
    def push_to_hf(data, repo_id, private=True):
        """Push data to HuggingFace dataset repository"""
        dataset = Dataset.from_list(data)
        dataset.push_to_hub(repo_id, private=private)
    
    @staticmethod
    def save_to_jsonl(data, file_path):
        """Save data to local JSONL file"""
        file_path = Path(file_path)
        file_path.parent.mkdir(parents=True, exist_ok=True)
        
        with open(file_path, "w") as f:
            for item in data:
                f.write(json.dumps(item) + "\n")
    
    @staticmethod
    def load_from_jsonl(file_path):
        """Load data from local JSONL file"""
        data = []
        with open(file_path, "r") as f:
            for line in f:
                data.append(json.loads(line.strip()))
        return data