from huggingface_hub import list_models
from pydantic import BaseModel, Field


class HubStatInput(BaseModel):
    author: str = Field(description="author on the Hugging Face Hub")


def get_hub_stats(author: str) -> str:
    """Fetches the most downloaded model from a specific author on the Hugging Face Hub."""
    try:
        # List models from the specified author, sorted by downloads
        models = list(
            list_models(author=author, sort="downloads", direction=-1, limit=1)
        )

        if models:
            model = models[0]
            return f"The most downloaded model by {author} is {model.id} with {model.downloads:,} downloads."
        else:
            return f"No models found for author {author}."
    except Exception as e:
        return f"Error fetching models for {author}: {str(e)}"