# Copyright 2025 The RLinf Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Reward models for embodied RL."""

from rlinf.models.embodiment.reward.base_reward_model import BaseRewardModel
from rlinf.models.embodiment.reward.resnet_reward_model import ResNetRewardModel
from rlinf.models.embodiment.reward.vlm_reward_model import (
    HistoryVLMRewardModel,
    VLMRewardModel,
)

__all__ = [
    "BaseRewardModel",
    "ResNetRewardModel",
    "VLMRewardModel",
    "HistoryVLMRewardModel",
]

reward_model_registry = {
    "resnet": ResNetRewardModel,
    "vlm": VLMRewardModel,
    "history_vlm": HistoryVLMRewardModel,
}


def get_reward_model_class(reward_model_type: str):
    if reward_model_type not in reward_model_registry:
        raise ValueError(f"Unsupported reward model type: {reward_model_type}")

    return reward_model_registry[reward_model_type]
