import sys
import redis
import json
import time
import subprocess
import psutil

if __name__=='__main__':
    if len(sys.argv)<=1:
        configFN = 'config-remote.json'
    else:
        configFN = sys.argv[1]

    f = open(configFN)
    config = json.load(f)

    redis_address = config['redis']['address']
    redis_password = config['redis']['password']
    redis_port = config['redis']['port']
    log_level = config['logging']
    work_dir = config['work_dir']
    stepTime = config['step_time']
    print_freq = config.get('print_frequency',10)
    process_name = config['process_name']

    r = redis.Redis(host=redis_address, port=redis_port, decode_responses=True,password=redis_password)
    runnings = []
    while True:
        sims = r.get('Simulations')
        sims = json.loads(sims)
        for sim in sims:
            simulation_id = sim['Id']
            process_exists = False
            for proc in psutil.process_iter(['pid', 'name', 'cmdline']):
                if proc.info['name'] == process_name and len(proc.info['cmdline']) > 1 and proc.info['cmdline'][1] == simulation_id:
                    process_exists = True
                    break
            if not simulation_id in runnings: #process_exists:
                runnings.append(simulation_id)
                command = ['./SimulationCore2', redis_address,str(redis_port),redis_password,simulation_id,str(log_level),str(stepTime),str(print_freq)]
                print(command)
                subprocess.Popen(command, cwd=work_dir)
        time.sleep(5)