102 lines
3.4 KiB
Python
102 lines
3.4 KiB
Python
from django.core.management.base import BaseCommand, CommandError
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from django.contrib.auth.models import User
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from django.db.models import Max, F, Count, Q, Sum
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from django.utils.timezone import now
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from django.core.cache import cache
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from django.db import transaction
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from dateutil import relativedelta
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import math
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from apiserver import secrets, settings
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from apiserver.api import models, utils, utils_email
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import time
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class Command(BaseCommand):
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help = 'Bill Trotec laser usage for last month. Wise to run this on the 2nd of each month to prevent any timezone issues.'
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FREE_MINUTES = 60 * 6
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DEVICE = 'TROTECS300'
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DEVICE_NAME = 'Trotec'
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DOLLARS_PER_MINUTE = 0.50
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def bill_trotec(self):
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count = 0
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now = utils.now_alberta_tz()
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current_month_start = now.replace(day=1, hour=0, minute=0, second=0, microsecond=0)
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previous_month_start = current_month_start - relativedelta.relativedelta(months=1)
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self.stdout.write('Billing from {} to {}...'.format(
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previous_month_start,
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current_month_start,
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))
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usages = models.Usage.objects.order_by('id').filter(should_bill=True)
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month_trotec_usages = usages.filter(
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started_at__gte=previous_month_start,
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started_at__lt=current_month_start,
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device=self.DEVICE,
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)
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month_trotec_user_ids = month_trotec_usages.values_list('user', flat=True).distinct()
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month_trotec_users = User.objects.filter(id__in=month_trotec_user_ids)
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self.stdout.write('Found {} usages by {} users.'.format(
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month_trotec_usages.count(),
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month_trotec_users.count(),
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))
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for user in month_trotec_users:
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if not user:
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continue
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self.stdout.write('Billing {}:'.format(user.username))
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users_usages = month_trotec_usages.filter(
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user=user,
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)
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total_seconds = users_usages.aggregate(Sum('num_seconds'))['num_seconds__sum'] or 0
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total_minutes = math.ceil(total_seconds / 60.0)
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billable_minutes = total_minutes - self.FREE_MINUTES
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self.stdout.write(' Total seconds: {}'.format(total_seconds))
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self.stdout.write(' Total minutes: {}'.format(total_minutes))
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self.stdout.write(' Billable minutes: {}'.format(billable_minutes))
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if billable_minutes <= 0:
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self.stdout.write(' Skipping, used free time.')
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continue
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bill = billable_minutes * self.DOLLARS_PER_MINUTE
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bill_str = format(bill, '.2f')
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self.stdout.write(' Total bill: ${}'.format(bill_str))
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utils_email.send_usage_bill_email(
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user,
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self.DEVICE_NAME,
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previous_month_start.strftime('%B'),
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total_minutes,
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billable_minutes,
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bill_str,
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)
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self.stdout.write(' Sent usage bill email.')
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count += 1
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return count
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def handle(self, *args, **options):
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self.stdout.write('{} - Billing Trotec'.format(str(now())))
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start = time.time()
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count = self.bill_trotec()
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self.stdout.write('Billed {} members'.format(count))
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self.stdout.write('Completed billing in {} s'.format(
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str(time.time() - start)[:4]
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))
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