# ========= Copyright 2023-2026 @ CAMEL-AI.org. All Rights Reserved. =========
# 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
#
#     http://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.
# ========= Copyright 2023-2026 @ CAMEL-AI.org. All Rights Reserved. =========
import os
from typing import Any, Dict, List, Optional, Union

from camel.configs import MinimaxConfig
from camel.models._interleaved_thinking_mixin import InterleavedThinkingMixin
from camel.models.openai_compatible_model import OpenAICompatibleModel
from camel.types import ModelType
from camel.utils import (
    BaseTokenCounter,
    api_keys_required,
)


class MinimaxModel(InterleavedThinkingMixin, OpenAICompatibleModel):
    r"""LLM API served by Minimax in a unified OpenAICompatibleModel
    interface.

    Args:
        model_type (Union[ModelType, str]): Model for which a backend is
            created.
        model_config_dict (Optional[Dict[str, Any]], optional): A dictionary
            that will be fed into:obj:`openai.ChatCompletion.create()`.
            If:obj:`None`, :obj:`MinimaxConfig().as_dict()` will be used.
            (default: :obj:`None`)
        api_key (Optional[str], optional): The API key for authenticating
            with the Minimax service. (default: :obj:`None`).
        url (Optional[str], optional): The url to the Minimax M2 service.
            (default: :obj:`None`)
        token_counter (Optional[BaseTokenCounter], optional): Token counter to
            use for the model. If not provided, :obj:`OpenAITokenCounter(
            ModelType.GPT_4O_MINI)` will be used.
            (default: :obj:`None`)
        timeout (Optional[float], optional): The timeout value in seconds for
            API calls. If not provided, will fall back to the MODEL_TIMEOUT
            environment variable or default to 180 seconds.
            (default: :obj:`None`)
        max_retries (int, optional): Maximum number of retries for API calls.
            (default: :obj:`3`)
        **kwargs (Any): Additional arguments to pass to the client
            initialization.
    """

    # Minimax uses "reasoning_details" instead of "reasoning_content"
    _reasoning_field = "reasoning_details"

    @api_keys_required([("api_key", "MINIMAX_API_KEY")])
    def __init__(
        self,
        model_type: Union[ModelType, str],
        model_config_dict: Optional[Dict[str, Any]] = None,
        api_key: Optional[str] = None,
        url: Optional[str] = None,
        token_counter: Optional[BaseTokenCounter] = None,
        timeout: Optional[float] = None,
        max_retries: int = 3,
        **kwargs: Any,
    ) -> None:
        if model_config_dict is None:
            model_config_dict = MinimaxConfig().as_dict()
        api_key = api_key or os.environ.get("MINIMAX_API_KEY")
        url = url or os.environ.get(
            "MINIMAX_API_BASE_URL", "https://api.minimaxi.com/v1"
        )
        timeout = timeout or float(os.environ.get("MODEL_TIMEOUT", 180))
        super().__init__(
            model_type=model_type,
            model_config_dict=model_config_dict,
            api_key=api_key,
            url=url,
            token_counter=token_counter,
            timeout=timeout,
            max_retries=max_retries,
            **kwargs,
        )
        # Initialize interleaved thinking state
        self._init_thinking_state()

    def _prepare_thinking_config(
        self,
        config: Dict[str, Any],
    ) -> Dict[str, Any]:
        r"""Prepare the request config for thinking-enabled requests.

        Overrides base method to add reasoning_split=True to extra_body
        when interleaved thinking is enabled.

        Args:
            config: The request configuration dictionary.

        Returns:
            The modified configuration dictionary.
        """
        config = super()._prepare_thinking_config(config)

        # Add reasoning_split to extra_body when interleaved thinking is
        # enabled
        if self._is_thinking_enabled():
            extra_body = config.get("extra_body", {})
            extra_body["reasoning_split"] = True
            config["extra_body"] = extra_body

        return config

    def _prepare_request_config(
        self,
        tools: Optional[List[Dict[str, Any]]] = None,
    ) -> Dict[str, Any]:
        r"""Prepare the request configuration dictionary.

        Overrides the base method to:
        1. Remove interleaved_thinking parameter (internal use only)
        2. Add reasoning_split=True to extra_body when thinking is enabled
        """
        request_config = super()._prepare_request_config(tools)
        return self._prepare_thinking_config(request_config)
