  import logging
import logging.config
import os

from dd4hep.simulations import Simulation
from dd4hep.detectors import Detector
from dd4hep.geometry import Geometry
from dd4hep.constants import constants
from dd4hep.particles import Particle
from dd4hep.interfaces import Geant4Interface

logging.config.fileConfig('logging.conf')

def run_simulation():
    # Import additional modules
    import dd4hep.simulations.tracking
    import dd4hep.simulations.particles
    import dd4hep.simulations.physics

    # Set up the kernel
    kernel = Simulation()

    # Load the geometry from a file
    geometry = Geometry()
    geometry.load('geometry.xml')

    # Import constants
    constants = constants()

    # Configure the Geant4 interface
    interface = Geant4Interface()
    interface.set_geometry(geometry)
    interface.set_constants(constants)

    # Set up the tracking field
    tracking_field = dd4hep.simulations.tracking.TrackingField()
    tracking_field.set_geometry(geometry)
    tracking_field.set_constants(constants)

    # Set up the event actions
    event_actions = dd4hep.simulations.particles.EventActions()
    event_actions.set_geometry(geometry)
    event_actions.set_constants(constants)

    # Set up the particle gun
    particle_gun = dd4hep.simulations.particles.ParticleGun()
    particle_gun.set_geometry(geometry)
    particle_gun.set_constants(constants)

    # Handle simulation particles
    particle_gun.add_particle(Particle(pdg_id=11, energy=1000))

    # Build the physics list
    physics_list = dd4hep.simulations.physics.PhysicsList()
    physics_list.add_module(dd4hep.simulations.physics.ScatteringModule())
    physics_list.add_module(dd4hep.simulations.physics.AbsorptionModule())

    # Start the engine
    engine = dd4hep.simulations.engine.Engine()
    engine.set_kernel(kernel)
    engine.set_geometry(geometry)
    engine.set_constants(constants)
    engine.set_tracking_field(tracking_field)
    engine.set_event_actions(event_actions)
    engine.set_particle_gun(particle_gun)
    engine.set_physics_list(physics_list)
    engine.run()

if __name__ == '__main__':
    run_simulation()