from jarca_ledger_mcp import service


def test_loan_balance_requires_representative_liability_definition(tmp_path):
    path = str(tmp_path / "ledger.sqlite3")
    bank = service.create_ledger_account("은행", type="bank", db_path=path)["account"]["id"]
    loan = service.create_ledger_account("대출", type="loan", db_path=path)["account"]["id"]

    missing_definition = service.register_account_valuation(
        loan,
        "2026-06-30",
        100,
        valuation_kind="balance",
        verification_status="verified",
        db_path=path,
    )
    assert missing_definition["success"] is False
    assert missing_definition["error_code"] == "validation_error"
    assert service.list_account_valuations(loan, db_path=path)["count"] == 0

    ordinary_balance = service.register_account_valuation(
        bank,
        "2026-06-30",
        100,
        valuation_kind="balance",
        verification_status="verified",
        db_path=path,
    )
    defined_loan_balance = service.register_account_valuation(
        loan,
        "2026-06-30",
        100,
        valuation_kind="balance",
        representative_liability_definition="principal_only",
        verification_status="verified",
        db_path=path,
    )
    assert ordinary_balance["success"] is True
    assert defined_loan_balance["success"] is True


def test_correction_replays_by_evidence_and_conflicts_on_changed_payload(tmp_path):
    path = str(tmp_path / "ledger.sqlite3")
    account = service.create_ledger_account("계좌", db_path=path)["account"]["id"]
    parent = service.register_account_valuation(
        account,
        "2026-06-30",
        100,
        source_ref="statement-1",
        verification_status="verified",
        db_path=path,
    )["valuation"]

    first = service.correct_account_valuation(
        parent["id"],
        110,
        "statement correction",
        db_path=path,
    )
    replay = service.correct_account_valuation(
        parent["id"],
        110,
        "statement correction",
        db_path=path,
    )
    changed_amount = service.correct_account_valuation(
        parent["id"],
        111,
        "statement correction",
        db_path=path,
    )
    changed_reason = service.correct_account_valuation(
        parent["id"],
        110,
        "different correction",
        db_path=path,
    )
    changed_source = service.correct_account_valuation(
        parent["id"],
        110,
        "statement correction",
        source_ref="statement-2",
        db_path=path,
    )

    assert first["success"] is True
    assert replay["success"] is True
    assert replay["reused"] is True
    assert replay["valuation"]["id"] == first["valuation"]["id"]
    for changed in (changed_amount, changed_reason, changed_source):
        assert changed["success"] is False
        assert changed["error_code"] == "correction_conflict"
    assert service.list_account_valuations(account, db_path=path)["count"] == 2