// Simulation module - Core simulation plugin and systems
// Implements deterministic tick-based simulation (D-010 principle 4)

use bevy_app::prelude::*;
use bevy_ecs::schedule::IntoScheduleConfigs;

pub mod input;
pub mod interaction;
pub mod movement;
pub mod path_follow;
pub mod pathfinding;
pub mod rng;
pub mod tier;
pub mod time;

/// Core simulation plugin
/// Manages simulation time, RNG, input processing, and tier transitions
pub struct SimulationPlugin;

impl Plugin for SimulationPlugin {
    fn build(&self, app: &mut App) {
        // Initialize core simulation resources
        app.init_resource::<time::SimulationTime>()
            .insert_resource(rng::SimRng::new(0))
            .init_resource::<input::InputQueue>()
            .init_resource::<crate::knowledge::EntityRegistry>()
            .add_systems(
                Update,
                (
                    input::process_player_input,
                    pathfinding::compute_paths.after(input::process_player_input),
                    path_follow::follow_paths.after(pathfinding::compute_paths),
                    movement::validate_movement.after(path_follow::follow_paths),
                    interaction::compute_nearby_interactions
                        .after(movement::validate_movement),
                    path_follow::cleanup_path_blocked.after(movement::validate_movement),
                    time::advance_tick
                        .after(path_follow::cleanup_path_blocked)
                        .after(interaction::compute_nearby_interactions),
                ),
            );

        tracing::debug!("SimulationPlugin initialized");
    }
}