93 lines
3.3 KiB
Python
93 lines
3.3 KiB
Python
import csv
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import re
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from datetime import datetime
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from decimal import Decimal
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from django.dispatch import receiver
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from django.utils.timezone import now
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from byro.bookkeeping.models import (
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Account, AccountCategory, RealTransaction,
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TransactionChannel, VirtualTransaction,
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)
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from byro.bookkeeping.signals import (
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derive_virtual_transactions, process_csv_upload,
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)
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from byro.members.models import Member
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@receiver(process_csv_upload)
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def process_bank_csv(sender, signal, **kwargs):
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source = sender
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reader = csv.DictReader(open(source.source_file.name, encoding='iso-8859-1'), delimiter=';', quotechar='"')
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booking_timestamp = now()
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for line in reader:
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if not line:
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continue
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reference = ''
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for key in line.keys():
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if key.startswith('VWZ'):
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reference += line[key] + ' '
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RealTransaction.objects.get_or_create(
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channel=TransactionChannel.BANK,
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value_datetime=datetime.strptime(line.get('Buchungstag'), '%d.%m.%Y'),
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amount=Decimal(line.get('Betrag').replace('.', '').replace(',', '.')),
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purpose=reference,
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originator=line.get('Auftraggeber/Empfänger', '<leer>'),
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importer='shack_bank_csv_importer',
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defaults={'source': source, 'booking_datetime': booking_timestamp, 'data': line},
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)
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return True
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@receiver(derive_virtual_transactions)
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def match_transaction(sender, signal, **kwargs):
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transaction = sender
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uid, score = reference_parser(reference=transaction.purpose)
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member = None
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try:
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member = Member.objects.get(number=uid)
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except Member.DoesNotExist:
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return
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account = Account.objects.get(account_category=AccountCategory.MEMBER_FEES)
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data = {
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'amount': transaction.amount,
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'destination_account': account,
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'value_datetime': transaction.value_datetime,
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'member': member,
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}
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virtual_transaction = VirtualTransaction.objects.filter(**data).first()
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if virtual_transaction and virtual_transaction.real_transaction != transaction:
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raise Exception(f'RealTransaction {transaction.id} cannot be matched! There is already a VirtualTransaction ({virtual_transaction.id}) that is too similar. It is matched to RealTransaction {virtual_transaction.real_transaction.id}.')
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if not virtual_transaction:
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data['real_transaction'] = transaction
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virtual_transaction = VirtualTransaction.objects.create(**data)
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return [virtual_transaction]
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def reference_parser(reference):
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reference = reference.lower()
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regexes = (
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r'.*mitgliedsbeitrag\s+id\s+(?P<ID>\d{1,4})\s.*',
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r'.*id\s+(?P<ID>\d{1,4})\smitgliedsbeitrag.*',
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# r'.*id\s+(?P<ID>\d{1,4})\s.*',
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r'.*mitgliedsbeitrag.*id\s+(?P<ID>\d{1,4})\s.*',
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r'.*mitgliedsbeitrag\s+(?P<ID>\d{1,4})\s.*',
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r'.*beitrag\s+mitglied\s+(?P<ID>\d{1,4})\s.*',
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r'.*mitgliedsbeitrag.*\s+(?P<ID>\d{1,4})[^\d].*',
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# r'.*id(?P<ID>\d{1,4})\s+zr\d+.*',
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# r'.*id\s+(?P<ID>\d{1,4}),\s+zr\s+\d+.*',
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r'.*mitgliedsbeitrag\s+id[.:-_](?P<ID>\d{1,4})\s.*',
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)
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for score, regex in enumerate(regexes, 1):
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hit = re.match(regex, reference)
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if hit:
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return (int(hit.groupdict().get('ID')), score)
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return (False, 99)
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