#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Eclipse SUMO, Simulation of Urban MObility; see https://eclipse.dev/sumo
# Copyright (C) 2008-2026 German Aerospace Center (DLR) and others.
# This program and the accompanying materials are made available under the
# terms of the Eclipse Public License 2.0 which is available at
# https://www.eclipse.org/legal/epl-2.0/
# This Source Code may also be made available under the following Secondary
# Licenses when the conditions for such availability set forth in the Eclipse
# Public License 2.0 are satisfied: GNU General Public License, version 2
# or later which is available at
# https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html
# SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later

# @file    runner.py
# @author  Michael Behrisch
# @author  Jakob Erdmann
# @author  Daniel Krajzewicz
# @date    2011-03-04


from __future__ import print_function
from __future__ import absolute_import
import os
import sys

if "SUMO_HOME" in os.environ:
    sys.path.append(os.path.join(os.environ["SUMO_HOME"], "tools"))
import traci  # noqa
sumoOptions = [a for a in sys.argv[1:] if a.startswith('--')]
positionalArgs = [a for a in sys.argv[1:] if not a.startswith('--')]
import sumolib  # noqa

traci.setLegacyGetLeader(False)


def checkSSM(vehID):
    # to find junction leaders we need to look beyond brakeDist
    leader, dist = traci.vehicle.getLeader(vehID, 200)
    curTTC = None
    if leader:
        dv = traci.vehicle.getSpeed(vehID) - traci.vehicle.getSpeed(leader)
        curTTC = (dist + traci.vehicle.getMinGap(vehID)) / dv
    print("  veh=%s minTTC=%s maxDRAC=%s minPET=%s minPPET=%s curTTC=%s" % (
        vehID,
        traci.vehicle.getParameter(vehID, "device.ssm.minTTC"),
        traci.vehicle.getParameter(vehID, "device.ssm.maxDRAC"),
        traci.vehicle.getParameter(vehID, "device.ssm.minPET"),
        traci.vehicle.getParameter(vehID, "device.ssm.minPPET"),
        curTTC))


repeat = 2 if len(positionalArgs) > 0 else 1
for _ in range(repeat):
    traci.start([
        sumolib.checkBinary('sumo'),
        "-c", "sumo.sumocfg",
        '--device.ssm.probability', '1',
    ])
    for i in range(15):
        traci.simulationStep()
        print("step %s" % i)
        checkSSM("ego")
        checkSSM("leader")
    traci.close()
