from typing import Any, Dict

from transformers import PreTrainedModel

from ..import_utils import is_peft_available

if is_peft_available():
    from peft import PEFT_TYPE_TO_CONFIG_MAPPING, get_peft_model  # type: ignore


def apply_peft(model: "PreTrainedModel", peft_type: str, peft_config: Dict[str, Any]) -> "PreTrainedModel":
    if not is_peft_available():
        raise ImportError("peft is not available. Please, pip install peft.")

    peft_config = PEFT_TYPE_TO_CONFIG_MAPPING[peft_type](**peft_config)

    return get_peft_model(model=model, peft_config=peft_config)