from types import SimpleNamespace

from jarca_ledger_mcp import service
from jarca_ledger_mcp.application import imports_service


def _transaction(date, balance):
    return SimpleNamespace(
        transaction_date=date,
        transaction_datetime=f"{date} 10:00:00",
        amount=100,
        counterparty="상대",
        raw_summary="입금",
        branch="",
        remittance_memo="",
        balance_after=balance,
        type="income",
        page=1,
        action="입금",
        external_id=lambda source_hash: f"review63:{source_hash}",
        raw_payload=lambda: "{}",
    )


def test_create_rejects_basis_only_without_mutation(tmp_path):
    path = str(tmp_path / "ledger.sqlite3")

    rejected = service.create_ledger_account(
        "기준일만 있는 계좌",
        last_balance_basis_date="2026-07-31",
        db_path=path,
    )

    assert rejected == {
        "success": False,
        "error_code": "validation_error",
        "error": "last_balance_basis_date requires last_balance",
    }
    baseline = service.create_ledger_account("정상 계좌", db_path=path)
    assert baseline["success"] is True
    listed = service.list_ledger_accounts(active_only=False, db_path=path)
    assert listed["count"] == 1
    assert listed["accounts"][0]["name"] == "정상 계좌"


def test_basis_only_create_cannot_block_later_dated_import(tmp_path, monkeypatch):
    path = str(tmp_path / "ledger.sqlite3")
    rejected = service.create_ledger_account(
        "기준일만 있는 계좌",
        last_balance_basis_date="2026-07-31",
        db_path=path,
    )
    assert rejected["success"] is False

    account = service.create_ledger_account("정상 계좌", db_path=path)["account"]["id"]
    monkeypatch.setattr(
        imports_service,
        "parse_kb_bank_pdf",
        lambda *_: {
            "transactions": [_transaction("2026-06-30", 50)],
            "validation": {"ok": True},
            "source_hash": "review63",
            "metadata": {"final_balance": 50, "account_number_masked": ""},
            "file_path": "/tmp/synthetic.pdf",
            "page_count": 1,
        },
    )

    imported = imports_service.import_kb_bank_pdf(
        "ignored", "pw", account_id=account, db_path=path,
    )

    current = service.list_ledger_accounts(active_only=False, db_path=path)["accounts"][0]
    assert imported["success"] is True
    assert current["last_balance"] == 50
    assert current["last_balance_basis_date"] == "2026-06-30"