from smolagents import (
    CodeAgent,
    VisitWebpageTool,
    WebSearchTool,
    WikipediaSearchTool,
    PythonInterpreterTool,
    FinalAnswerTool,
)
from groq import Groq
from vision_tool import image_reasoning_tool
import os
import time


# ---- TOOLS ----


# ---- GROQ MODEL WRAPPER ----
class GroqModel:
    def __init__(self, model_name=""):
        self.model_name = model_name
        self.client = Groq(api_key=os.environ.get("GROQ_API_KEY"))

    def __call__(self, prompt, max_tokens=8096):
        if isinstance(prompt, str):
            messages = [{"role": "user", "content": prompt}]
        else:
            messages = prompt

        response = None
        for attempt in range(3):
            try:
                response = self.client.chat.completions.create(
                    messages=messages,
                    model=self.model_name,
                    stream=False,
                    max_tokens=max_tokens,
                )
                break
            except Exception as e:
                msg = str(e).lower()
                if "rate limit" in msg and attempt < 2:
                    wait = 10 * (attempt + 1)
                    time.sleep(wait)
                    continue
                raise

        if response is None:
            response = self.client.chat.completions.create(
                messages=messages,
                model=self.model_name,
                stream=False,
                max_tokens=max_tokens,
            )

        choice = response.choices[0]
        if hasattr(choice, "message"):
            content = choice.message.content
        else:
            # Fallback for text-only completions
            if hasattr(choice, "text"):
                content = choice.text
            elif isinstance(choice, str):
                content = choice
            else:
                content = str(choice)
        # token usage is calculated but currently unused
        if hasattr(response, "usage") and response.usage is not None:
            _ = response.usage.total_tokens

        return content

    def generate(self, prompt, max_tokens=8096, **kwargs):
        # For compatibility with agent frameworks
        return self.__call__(prompt, max_tokens=max_tokens)


# ---- MULTI-AGENT SYSTEM ----
class MultyAgentSystem:
    def __init__(self):
        self.primary_model_name = "deepseek-r1-distill-llama-70b"
        self.fallback_model_name = "llama3-70b-8k"

        self.deepseek_model = GroqModel(self.primary_model_name)
        qwen_model = GroqModel("qwen-qwq-32b")
        self.verification_limit = int(os.getenv("VERIFY_WORD_LIMIT", "75"))

        # --- Web agent definition ---
        self.web_agent = CodeAgent(
            model=qwen_model,
            tools=[WebSearchTool(), VisitWebpageTool(), WikipediaSearchTool()],
            name="web_agent",
            description=(
                "You are a web browsing agent. Whenever the given {task} involves browsing "
                "the web or a specific website such as Wikipedia or YouTube, you will use "
                "the provided tools. For web-based factual and retrieval tasks, be as precise and source-reliable as possible."
            ),
            additional_authorized_imports=[
                "markdownify",
                "json",
                "requests",
                "urllib.request",
                "urllib.parse",
                "wikipedia-api",
            ],
            verbosity_level=0,
            max_steps=10,
        )

        # --- Info agent definition ---
        self.info_agent = CodeAgent(
            model=qwen_model,
            tools=[PythonInterpreterTool(), image_reasoning_tool],
            name="info_agent",
            description=(
                "You are an agent tasked with cleaning, parsing, calculating information, and performing OCR if images are provided in the {task}. "
                "You can also analyze images using a vision model. You handle all math, code, and data manipulation. Use numpy, math, and available libraries. "
                "For image or chess tasks, use pytesseract, PIL, chess, or the image_reasoning_tool as required."
            ),
            additional_authorized_imports=[
                "numpy",
                "math",
                "pytesseract",
                "PIL",
                "chess",
            ],
        )

        # --- Manager agent definition ---
        manager_planning_interval = int(os.getenv("MANAGER_PLANNING_INTERVAL", "3"))
        manager_max_steps = int(os.getenv("MANAGER_MAX_STEPS", "8"))

        self.manager_agent = CodeAgent(
            model=qwen_model,
            tools=[FinalAnswerTool()],
            managed_agents=[self.web_agent, self.info_agent],
            name="manager_agent",
            description=(
                "You are the manager. Given a {task}, plan which agent to use: "
                "If web data is needed, delegate to web_agent. If math, parsing, image reasoning, or code is needed, use info_agent. "
                "After collecting outputs, optionally cross-validate and check correctness, then finalize and submit the best answer using FinalAnswerTool. "
                "For each task, explicitly explain your planning steps and reasons for choosing which agent, and always prefer the most accurate and complete answer possible."
            ),
            additional_authorized_imports=[
                "json",
                "pandas",
                "numpy",
            ],
            planning_interval=manager_planning_interval,
            verbosity_level=2,
            max_steps=manager_max_steps,
        )

        # runtime tracking for fallback switching
        self.total_runtime = 0.0
        self.first_call_duration = None
        self.model_switched = False

    def _switch_to_fallback(self):
        if self.model_switched:
            return
        self.manager_agent.model = GroqModel(self.fallback_model_name)
        self.model_switched = True

    def run(self, question, high_stakes: bool = False, **kwargs):
        start_time = time.time()
        print("Generating initial answer with Qwen-32B")
        initial_answer = self.manager_agent(question, **kwargs)
        call_duration = time.time() - start_time

        answer = initial_answer
        if high_stakes or len(initial_answer.split()) > self.verification_limit:
            print("Verifying answer using DeepSeek-70B")
            verification_prompt = (
                "Review the following answer for accuracy and rewrite if needed:"
                f"\n\n{initial_answer}"
            )
            try:
                answer = self.deepseek_model(verification_prompt)
            except Exception as e:
                print(f"Verification failed: {e}. Using initial answer.")
                answer = initial_answer

        if self.first_call_duration is None:
            self.first_call_duration = call_duration
            if self.first_call_duration > 30:
                self._switch_to_fallback()

        self.total_runtime += call_duration
        if self.total_runtime > 300 and not self.model_switched:
            self._switch_to_fallback()

        return answer

    def __call__(self, question, high_stakes: bool = False, **kwargs):

        return self.run(question, high_stakes=high_stakes, **kwargs)