from typing import Optional
from pydantic import Field

from dejavu.configs.rerankers.base import BaseRerankerConfig


class HuggingFaceRerankerConfig(BaseRerankerConfig):
    """
    Configuration class for HuggingFace reranker-specific parameters.
    Inherits from BaseRerankerConfig and adds HuggingFace-specific settings.
    """

    model: Optional[str] = Field(default="BAAI/bge-reranker-base", description="The HuggingFace model to use for reranking")
    device: Optional[str] = Field(default=None, description="Device to run the model on ('cpu', 'cuda', etc.)")
    batch_size: int = Field(default=32, description="Batch size for processing documents")
    max_length: int = Field(default=512, description="Maximum length for tokenization")
    normalize: bool = Field(default=True, description="Whether to normalize scores")
