"""LLM client factory."""

from src.llm.client import LLMClient, load_config


def create_llm_client(config: dict | None = None) -> LLMClient:
    """Create the appropriate LLM client based on config."""
    if config is None:
        config = load_config()

    backend = config["llm"]["backend"]
    if backend == "claude":
        from src.llm.claude_client import ClaudeClient
        return ClaudeClient(config)
    elif backend == "local":
        from src.llm.local_client import LocalClient
        return LocalClient(config)
    elif backend == "claude-cli":
        from src.llm.claude_cli_client import ClaudeCLIClient
        return ClaudeCLIClient(config)
    elif backend == "openai":
        from src.llm.openai_client import OpenAIClient
        return OpenAIClient(config)
    else:
        raise ValueError(f"Unknown LLM backend: {backend}")