"""

Script qui calcule et retourne l intervale entre 2 dates
format FR

python3 Bureau/date.py "26/11/2019 19:00"

"""
import dateutil.parser
import dateutil.relativedelta
import datetime
import sys

try :
    now = datetime.datetime.now()
    end = dateutil.parser.parse(sys.argv[1])
    delta = dateutil.relativedelta.relativedelta(end,now)
    days = delta.days
    if delta.months:
        print(f'{delta.months} mois {delta.days} jours {delta.hours} heures')
    elif delta.days:
        print(f'{delta.days} jours {delta.hours} heures')
    elif delta.hours :
        print(f'{delta.hours} heures')
    else :
        print(f'{delta.minutes} minutes')
    exit
except IndexError:
    print('Calcule intervale entre deux dates')
    print(f'\tusage : {sys.argv[0]} <str_date>')
    sys.exit(1)
except ValueError:
    print('Date invalide')
    sys.exit(2)