"""LLM adapters: abstract interface and provider implementations.

NativeAdapter: Uses FusionAGI's internal reasoning—no external API calls.
OpenAIAdapter is None when the openai package is not installed (pip install fusionagi[openai]).
Use: from fusionagi.adapters import OpenAIAdapter; if OpenAIAdapter is not None: ...
"""

from fusionagi.adapters.base import LLMAdapter
from fusionagi.adapters.stub_adapter import StubAdapter
from fusionagi.adapters.cache import CachedAdapter
from fusionagi.adapters.native_adapter import NativeAdapter

try:
    from fusionagi.adapters.openai_adapter import OpenAIAdapter
except ImportError:
    OpenAIAdapter = None  # type: ignore[misc, assignment]

__all__ = ["LLMAdapter", "StubAdapter", "CachedAdapter", "NativeAdapter", "OpenAIAdapter"]