from typing import Callable
import uuid
import asyncio

from pantheon.team import Team
from pantheon.internal.memory import Memory
from pantheon.utils.misc import run_func
from pantheon.utils.log import logger


class Thread:
    """A thread is a single chat in a chatroom.

    Args:
        team: The team/team_getter to use for the thread.
        memory: The memory to use for the thread.
        message: The message to send to the thread.
        run_hook_timeout: The timeout for the hook.
        hook_retry_times: The number of times to retry the hook.
    """

    def __init__(
        self,
        team,  # team/team_getter
        memory: Memory,
        message: list[dict],
        context_variables: dict | None = None,
        run_hook_timeout: float = 1.0,
        hook_retry_times: int = 5,
    ):
        self.id = str(uuid.uuid4())
        self.team = team  # team/team_getter
        self.memory = memory
        self.message = message
        self.context_variables = context_variables or {}
        self._process_chunk_hooks: list[Callable] = []
        self._process_step_message_hooks: list[Callable] = []
        self.response = None
        self.run_hook_timeout = run_hook_timeout
        self.hook_retry_times = hook_retry_times
        self._stop_flag = False
        # Suggestions now handled in room.py

    def add_chunk_hook(self, hook: Callable):
        """Add a chunk hook to the thread.

        Args:
            hook: The hook to add.
        """
        self._process_chunk_hooks.append(hook)

    def add_step_message_hook(self, hook: Callable):
        """Add a step message hook to the thread.

        Args:
            hook: The hook to add.
        """
        self._process_step_message_hooks.append(hook)

    async def process_chunk(self, chunk: dict):
        """Process a chunk of the thread.

        Args:
            chunk: The chunk to process.
        """
        chunk["chat_id"] = self.memory.id
        _coros = []
        for hook in self._process_chunk_hooks:

            async def _run_hook(hook: Callable, chunk: dict):
                res = None
                error = None
                for _ in range(self.hook_retry_times):
                    try:
                        res = await asyncio.wait_for(
                            run_func(hook, chunk), timeout=self.run_hook_timeout
                        )
                        return res
                    except Exception as e:
                        logger.debug(
                            f"Failed run hook {hook.__name__} for chunk {chunk}, retry {_ + 1} of {self.hook_retry_times}"
                        )
                        error = e
                        continue
                else:
                    logger.error(f"Error running process_chunk hook: {error}")
                    self._process_chunk_hooks.remove(hook)

            _coros.append(_run_hook(hook, chunk))
        await asyncio.gather(*_coros)

    async def process_step_message(self, step_message: dict):
        """Process a step message of the thread.

        Args:
            step_message: The step message to process.
        """
        step_message["chat_id"] = self.memory.id
        _coros = []
        for hook in self._process_step_message_hooks:

            async def _run_hook(hook: Callable, step_message: dict):
                res = None
                try:
                    res = await asyncio.wait_for(
                        run_func(hook, step_message), timeout=self.run_hook_timeout
                    )
                except Exception as e:
                    logger.error(f"Error running process_step_message hook: {str(e)}")
                    self._process_step_message_hooks.remove(hook)
                return res

            _coros.append(_run_hook(hook, step_message))
        await asyncio.gather(*_coros)

    async def run(self):
        """Run the thread.

        Returns:
            The response of the thread.
        """
        try:
            # Ensure team is ready (create custom team if needed)
            team: Team = self.team
            if not isinstance(self.team, Team):
                team = await run_func(self.team)

            resp = await team.run(
                self.message,
                memory=self.memory,
                context_variables=self.context_variables,
                process_chunk=self.process_chunk,
                process_step_message=self.process_step_message,
                check_stop=self._check_stop,
            )
            self.response = {
                "success": True,
                "response": resp.content,
                "chat_id": self.memory.id,
            }

            # Suggestions are now handled in room.py
        except Exception as e:
            logger.error(f"Error chatting: {e}")
            import traceback

            traceback.print_exc()
            self.response = {
                "success": False,
                "message": str(e),
                "chat_id": self.memory.id,
            }

    def _check_stop(self, *args, **kwargs):
        """Check if the thread should be stopped.

        Returns:
            Whether the thread should be stopped.
        """
        return self._stop_flag

    async def stop(self):
        """Stop the thread.

        Returns:
            The response of the thread.
        """
        self._stop_flag = True

    # All suggestion methods moved to room.py
