Lookup missing BIC when returning bank account activities

pycroft/lib/finance/__init__.py

@@ -42,8 +42,9 @@
     get_pid_csv,
 )
 from .retransfer import (
-    get_activities_to_return,
+    attribute_activities_as_returned,
     generate_activities_return_sepaxml,
+    get_activities_to_return,
 )
 from .transaction_crud import (
     simple_transaction,

pycroft/lib/finance/retransfer.py

@@ -1,9 +1,10 @@
 from collections.abc import Sequence
 from datetime import datetime, timedelta
 
+from schwifty import IBAN
 from sepaxml import SepaTransfer
 from sqlalchemy import select
-from sqlalchemy.orm import joinedload, Session
+from sqlalchemy.orm import Session, joinedload
 
 from pycroft import config
 from pycroft.helpers.utc import ensure_tz
@@ -33,10 +34,11 @@ def generate_activities_return_sepaxml(activities: list[BankAccountActivity]) ->
     sepa = SepaTransfer(transfer_config, clean=False)
 
     for activity in activities:
+        bic = activity.other_routing_number or IBAN(activity.other_account_number).bic.compact
         payment = {
             "name": activity.other_name,
             "IBAN": activity.other_account_number,
-            "BIC": activity.other_routing_number,
+            "BIC": bic,
             "amount": int(activity.amount * 100),
             "execution_date": datetime.now().date(),
             "description": f"Rücküberweisung nicht zuordenbarer Überweisung vom {activity.posted_on} mit Referenz {activity.reference}"[
@@ -46,3 +48,27 @@ def generate_activities_return_sepaxml(activities: list[BankAccountActivity]) ->
         sepa.add_payment(payment)
 
     return sepa.export()
+
+
+def attribute_activities_as_returned(
+    session: Session, activities: list[BankAccountActivity]
+) -> None:
+    for activity in activities:
+        debit_account = config.non_attributable_transactions_account
+        credit_account = activity.bank_account.account
+
+        transaction = finance.simple_transaction(
+            description=activity.reference,
+            debit_account=debit_account,
+            credit_account=credit_account,
+            amount=activity.amount,
+            author=current_user,
+            valid_on=activity.valid_on,
+            confirmed=False,
+        )
+        activity.split = next(
+            split for split in transaction.splits if split.account_id == credit_account.id
+        )
+        session.add(activity)
+
+    session.commit()

pycroft/model/alembic/versions/2d7e4df39a3b_add_account_for_non_attributable_.py

@@ -0,0 +1,41 @@
+"""add account for non-attributable transfers to config
+
+Revision ID: 2d7e4df39a3b
+Revises: bc0e0dd480d4
+Create Date: 2024-06-06 20:21:16.972195
+
+"""
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision = "2d7e4df39a3b"
+down_revision = "bc0e0dd480d4"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column(
+        "config",
+        sa.Column(
+            "non_attributable_transactions_account_id",
+            sa.Integer(),
+            nullable=False,
+            server_default="10",
+        ),
+    )
+    op.create_foreign_key(
+        None, "config", "account", ["non_attributable_transactions_account_id"], ["id"]
+    )
+
+
+def downgrade():
+    op.drop_constraint(None, "config", type_="foreignkey")
+    op.drop_column("config", "non_attributable_transactions_account_id")
+    op.create_index(
+        "bank_account_activity_imported_at", "bank_account_activity", ["imported_at"], unique=False
+    )

pycroft/model/config.py

@@ -72,6 +72,11 @@ class Config(IntegerIdModel):
         foreign_keys=[membership_fee_bank_account_id]
     )
 
+    non_attributable_transactions_account_id: Mapped[int] = col(ForeignKey(Account.id))
+    non_attributable_transactions_account: Mapped[Account] = relationship(
+        foreign_keys=[non_attributable_transactions_account_id]
+    )
+
     fints_product_id: Mapped[str | None]
 
     __table_args__ = (CheckConstraint("id = 1"),)

pyproject.toml

@@ -53,6 +53,7 @@ dependencies = [
     "pydantic ~= 2.4.0",
     "python-dotenv ~= 0.21.0",
     "reportlab ~= 3.6.13",  # usersheet generation
+    "schwifty ~= 2024.06.1",
     "sentry-sdk[Flask] ~= 1.29.2",
     "simplejson ~= 3.11.1",  # decimal serialization
     "SQLAlchemy >= 2.0.1",

web/blueprints/finance/__init__.py

@@ -71,6 +71,7 @@
     match_activities,
     get_activities_to_return,
     generate_activities_return_sepaxml,
+    attribute_activities_as_returned,
     get_all_bank_accounts,
     get_unassigned_bank_account_activities,
     get_all_mt940_errors,
@@ -609,6 +610,8 @@ def bank_account_activities_return_do() -> ResponseReturnValue:
 
         sepa_xml: bytes = generate_activities_return_sepaxml(selected_activities)
 
+        attribute_activities_as_returned(session, selected_activities)
+
     return send_file(
         BytesIO(sepa_xml),
         as_attachment=True,

web/templates/finance/bank_account_activities_return.html

@@ -34,7 +34,7 @@
 
     <div class="row">
         <div class="col-md-12">
-            <button type="submit" class="btn btn-primary">SEPA-XML generieren</button>
+            <button type="submit" class="btn btn-primary">Überweisungen unbestätigt als unzuordenbar buchen und SEPA-XML exportieren</button>
         </div>
     </div>
     </form>