# © Crown-owned copyright 2024, Defence Science and Technology Laboratory UK
from __future__ import annotations

import random
from abc import abstractmethod

from primaite.game.agent.interface import AbstractScriptedAgent


class AbstractTAPAgent(AbstractScriptedAgent, identifier="Abstract_TAP"):
    """Base class for TAP agents to inherit from."""

    config: "AbstractTAPAgent.ConfigSchema"

    class ConfigSchema(AbstractScriptedAgent.ConfigSchema):
        """Configuration schema for Abstract TAP agents."""

        agent_name: str = "Abstract_TAP"
        starting_node_name: str
        next_execution_timestep: int

    @abstractmethod
    def setup_agent(self) -> None:
        """Set up agent."""
        pass

    def _set_next_execution_timestep(self, timestep: int) -> None:
        """Set the next execution timestep with a configured random variance.

        :param timestep: The timestep to add variance to.
        """
        random_timestep_increment = random.randint(
            -self.config.agent_settings.start_settings.variance, self.config.agent_settings.start_settings.variance
        )
        self.config.next_execution_timestep = timestep + random_timestep_increment

    def _select_start_node(self) -> None:
        """Set the starting starting node of the agent to be a random node from this agent's action manager."""
        # we are assuming that every node in the node manager has a data manipulation application at idx 0
        num_nodes = len(self.config.action_manager.node_names)
        starting_node_idx = random.randint(0, num_nodes - 1)
        self.starting_node_name = self.config.action_manager.node_names[starting_node_idx]
        self.config.logger.debug(f"Selected Starting node ID: {self.starting_node_name}")