"""PRD §5.4 FRFM048 — manual bank-match confirmation service + audit row."""
from __future__ import annotations

from datetime import date, timedelta
from decimal import Decimal
from unittest.mock import patch

import pytest
from django.utils import timezone

from apps.core.audit.models import AuditLog
from apps.core.audit.tasks import persist_audit_log
from apps.rims.finance.models import (
    BankStatement,
    BankStatementLine,
    Budget,
    BudgetLine,
    DisbursementExecution,
    DisbursementRequest,
)
from apps.rims.finance.services_reconciliation import confirm_bank_match
from apps.rims.grants.models import Application, Award, GrantCall


@pytest.fixture(autouse=True)
def _sync_audit():
    with patch("apps.core.audit.tasks.write_audit_log.delay", side_effect=lambda **kw: persist_audit_log(**kw)):
        with patch(
            "apps.core.audit.mixins.transaction.on_commit",
            side_effect=lambda fn: fn(),
        ):
            yield


@pytest.mark.django_db
def test_confirm_bank_match_links_and_audits(applicant_user, institution, finance_user):
    """PRD §5.4 FRFM048 — manual confirm sets match + emits BANK_LINE_MATCHED."""
    call = GrantCall.objects.create(
        title=f"6F-conf call {timezone.now().timestamp()}",
        slug=f"6f-conf-{int(timezone.now().timestamp() * 1000) % 10_000_000}",
        call_type="grant",
        opens_at=timezone.now() - timedelta(days=200),
        closes_at=timezone.now() + timedelta(days=10),
        status=GrantCall.Status.PUBLISHED,
    )
    app = Application.objects.create(call=call, applicant=applicant_user, institution=institution)
    award = Award.objects.create(
        application=app,
        amount=Decimal("3000"),
        currency="USD",
        awarded_at=timezone.now(),
        project_end_date=timezone.now().date() + timedelta(days=365),
    )
    budget = Budget.objects.create(award=award, name="Conf budget", currency="USD")
    BudgetLine.objects.create(budget=budget, label="L", amount=Decimal("3000"))
    request = DisbursementRequest.objects.create(
        budget=budget,
        amount=Decimal("300.00"),
        requested_by=finance_user,
        status=DisbursementRequest.Status.APPROVED,
    )
    execution = DisbursementExecution.objects.create(
        request=request,
        status=DisbursementExecution.Status.EXECUTED,
        executed_at=timezone.now(),
    )
    statement = BankStatement.objects.create(
        name="Statement",
        period_start=date.today() - timedelta(days=5),
        period_end=date.today() + timedelta(days=5),
        account_reference="TEST",
        currency="USD",
        uploaded_by=finance_user,
        file="dummy.csv",
    )
    line = BankStatementLine.objects.create(
        statement=statement,
        value_date=date.today(),
        description="Unmatched candidate",
        amount=Decimal("300.00"),
        currency="USD",
    )
    confirm_bank_match(line, execution=execution, actor=finance_user)
    line.refresh_from_db()
    assert line.match_status == BankStatementLine.MatchStatus.MATCHED
    assert line.matched_execution_id == execution.pk
    assert AuditLog.objects.filter(action="BANK_LINE_MATCHED").exists()