from django.core.management.base import BaseCommand
from uncloud_auth.models import User
from uncloud_pay.models import Order, Bill, get_balance_for_user
import uncloud_pay.stripe as uncloud_stripe

from datetime import timedelta
from django.utils import timezone

class Command(BaseCommand):
    help = 'Generate bills and charge customers if necessary.'

    def add_arguments(self, parser):
        pass

    def handle(self, *args, **options):
        users = User.objects.all()
        print("Processing {} users.".format(users.count()))
        for user in users:
            balance = get_balance_for_user(user)
            if balance < 0:
                print("User {} has negative balance ({}), charging.".format(user.username, balance))
                amount_to_be_charged = abs(balance)
                result = uncloud_stripe.charge_customer(user, amount_to_be_charged)
                if result.status != 'succeeded':
                    print("ERR: charging {} with method {} failed"
                            .format(user.username, result)
                            )
        print("=> Done.")