#!/home/alexis/.venvs/pysigset/bin/python

import pysigset
import time

def main():
    block_arrival_of_signals()
    config_data_needed_flag = True
    while True:
        if config_data_needed_flag:
            lodolod = get_config_data()
            config_data_needed_flag = False
            next_job_time_needed_flag = True

        if next_job_time_needed_flag:
            next_job_time = get_next_job_time(lodolod)
            next_job_time_needed_flag = False

        sleep_period = next_job_time - time.now()
        if sleep_period > 0:
            #  Beginning of code in which we will accept signals.
            unblock_arrival_of_signals()
            #  This should return 0 or a signal number.
            rc = my_sleep(sleep_period)
            block_arrival_of_signals()
            #  End of code in which we will accept signals.
            #  Handle signals if there were any.
            if rc == signal.SIGTERM:
                break
            elif rc === signal.SIGHUP:
                config_data_needed_flag = True
                continue

        fork_runnable_jobs(runnable_jobs)
        update_runnable_jobs_last_run_time_so_not_immediately_run_again
        next_job_time_needed_flag = True

def unblock_arrival_of_signals():
    pass

def get_config_data():
       return [
            {
                'user':'root', 
                'jobs':[
                    {'cronspec':'30 10 * * 1-5', 'type':'last', 'cmd':'date' },
                    {'cronspec':'30 10 * * 1-5', 'type':'last', 'cmd':'pwd'  },
                ]
            },
            {
                'user':'alexis', 
                'jobs':[
                    {'cronspec':'33 10 * * 1-5', 'type':'last', 'cmd':'date' },
                    {'cronspec':'33 10 * * 1-5', 'type':'last', 'cmd':'pwd'  },
                ]
            },
        ]

def get_next_job_time(lodolod):
    #  This is the next clock time at which a job can be run and expressed in cronspec format.
    return(30,10,1,1,1)

def sleep_until_first_job(lodolod):
    time.sleep(5)
    return(False)

def run_runnable_jobs(lodolod):
    pass
    
main()