# -*- coding: utf-8 -*-
from __future__ import annotations
import functools
import logging
from typing import TYPE_CHECKING, Dict, Any, Optional

from ..core.dataprovider import DataProvider

# Type hinting
if TYPE_CHECKING:
    from airfogsim.core.environment import Environment
    # Import Agent/Manager types needed for the callback signature
    # from airfogsim.core.agent import Agent
    # from airfogsim.manager.task_manager import TaskManager # Example

# Configure logging
logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(name)s - %(levelname)s - %(message)s')
logger = logging.getLogger(__name__)

class AccidentDataProvider(DataProvider):
    """
    Provides accident data and triggers accident-related events. (Placeholder)
    """
    EVENT_ACCIDENT_REPORTED = 'AccidentReported'

    def __init__(self, env: 'Environment', config: Optional[Dict[str, Any]] = None):
        super().__init__(env, config)
        # TODO: Initialize accident data storage
        self.accident_data = None
        self.data_file = self.config.get('data_file')

    def load_data(self):
        """
        Load accident data (e.g., location, time, severity).
        """
        if not self.data_file:
            logger.warning(f"{self.__class__.__name__} cannot load data: 'data_file' not specified.")
            return
        logger.info(f"Loading accident data from {self.data_file}... (Not implemented)")
        # TODO: Implement data loading logic
        pass

    def start_event_triggering(self):
        """
        Start the SimPy process to trigger AccidentReported events.
        """
        logger.info(f"{self.__class__.__name__} event triggering process starting... (Not implemented)")
        # TODO: Implement SimPy process loop based on loaded accident data schedule
        # self.env.process(self._accident_report_loop())
        pass

    def _accident_report_loop(self):
        """SimPy process to trigger accident events."""
        # TODO: Implement loop logic
        yield self.env.timeout(7200) # Example: wait two hours
        # event_data = {...} # Populate with accident details
        # self.env.event_registry.publish(self.EVENT_ACCIDENT_REPORTED, event_data)
        pass

    # --- Standard Callback Method (Placeholder) ---
    def on_accident_reported(self, subscriber: Any, event_data: Dict[str, Any]):
        """
        Standard callback for AccidentReported events.
        Modifies subscriber state or triggers actions based on accidents. (Placeholder)

        Args:
            subscriber: The object that subscribed (e.g., TaskManager, Agent).
            event_data (dict): Data about the reported accident (e.g., location, severity, type).
        """
        # TODO: Implement logic based on subscriber type and event data
        # Example for TaskManager:
        # from airfogsim.manager.task_manager import TaskManager
        # if isinstance(subscriber, TaskManager):
        #     task_manager = subscriber
        #     location = event_data.get('location')
        #     severity = event_data.get('severity')
        #     # Potentially generate a new emergency response task (e.g., inspection)
        #     if severity > 3:
        #         task_manager.generate_emergency_inspection_task(location)
        #         logger.info(f"Emergency task generated due to accident report at {location}.")

        # Example for an Agent:
        # from airfogsim.core.agent import Agent
        # if isinstance(subscriber, Agent):
        #      agent = subscriber
        #      # Agent might need to re-route if its path is near the accident
        #      if agent.is_path_affected_by_accident(event_data.get('location')):
        #          agent.trigger_reroute("Accident reported on path")

        logger.debug(f"Callback {self.__class__.__name__}.on_accident_reported called for {subscriber} (Not implemented)")
        pass

    # --- Helper Methods (Placeholders) ---
    # def is_path_affected_by_accident(self, agent, accident_location): ...