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']
    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 process_exists:
                subprocess.Popen(['./SimulationCore2', redis_address,str(redis_port),redis_password,simulation_id,str(log_level)], cwd=work_dir)
        time.sleep(5)

# Connect to Redis server
redis_host = 'localhost'  # Replace with your Redis server's host
redis_port = 6379  # Replace with your Redis server's port
redis_client = redis.Redis(host=redis_host, port=redis_port)
if redis_client is None:
    print(f"Can not connect to {redis_host}.\nExiting...")
    exit(1)
# Main loop
while True:
    # Retrieve array from Redis
    simulations = redis_client.lrange('simulations', 0, -1)
    
    # Check each entry in the array
    for entry in simulations:
        simulation_id = entry.decode()
        
        # Check if 'SimulationCore2' process with specific parameter is running
        process_name = 'SimulationCore2'
        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 process_exists:
            # Run 'SimulationCore2' process with specific parameter
            printf(f"Starting new simulator process for {simulation_id}")
            subprocess.Popen(['./SimulationCore2', simulation_id], cwd='/path/to/SimulationCore2/directory')
            
    # Wait for 1 second before checking again
    time.sleep(1)