from typing import Dict, Any, Optional, List, Type, Union
from pydantic import BaseModel
from .base import LLMClient, LLMCapabilities


class MockLLMClient(LLMClient):
    """
    Mock LLMClient for testing.
    """

    @property
    def capabilities(self) -> LLMCapabilities:
        return LLMCapabilities()

    def __init__(self, response: Union[str, Dict[str, Any], BaseModel] = "Mock response", **kwargs):
        self.response = response
        self.last_prompt = None
        self.last_schema = None
        self.call_count = 0

    async def generate(
        self,
        prompt: str,
        *,
        instruction: Optional[str] = None,
        schema: Optional[Type[BaseModel]] = None,
        temperature: Optional[float] = None,
        tools: Optional[List[Any]] = None,
        metadata: Optional[Dict[str, Any]] = None,
        name: Optional[str] = None,
    ) -> Union[str, Dict[str, Any], BaseModel]:
        self.last_prompt = prompt
        self.last_instruction = instruction
        self.last_schema = schema
        self.last_name = name
        self.call_count += 1

        if tools:
            # Simple mock tool calling if needed
            for tool in tools:
                if hasattr(tool, "__name__") and tool.__name__ in prompt:
                    # Fake tool execution log
                    pass

        if schema and isinstance(self.response, dict):
            return schema(**self.response)

        return self.response

    async def chat(
        self,
        messages: List[Dict[str, str]],
        *,
        instruction: Optional[str] = None,
        schema: Optional[Type[BaseModel]] = None,
        temperature: Optional[float] = None,
        tools: Optional[List[Any]] = None,
        metadata: Optional[Dict[str, Any]] = None,
        name: Optional[str] = None,
    ) -> Union[str, Dict[str, Any], BaseModel]:
        prompt = messages[-1]["content"] if messages else ""
        return await self.generate(
            prompt,
            instruction=instruction,
            schema=schema,
            temperature=temperature,
            tools=tools,
            metadata=metadata,
            name=name,
        )