from __future__ import annotations

import inspect
import sys
from pathlib import Path

sys.path.insert(0, str(Path(__file__).resolve().parents[1]))

from dashboard.page_views import accounts as accounts_page
from jarca_ledger_mcp.adapters.mcp import server


def test_dashboard_valuation_basis_never_uses_sync_timestamp():
    account = {
        "last_balance_basis_date": "2026-06-30",
        "last_synced_at": "2026-07-09T23:59:00+09:00",
    }
    assert accounts_page._account_balance_basis_date(account) == "2026-06-30"
    assert accounts_page._account_balance_basis_date({"last_synced_at": account["last_synced_at"]}) == ""
    assert "last_synced_at" not in inspect.getsource(accounts_page.page_accounts)


def test_mcp_account_write_tools_forward_explicit_balance_basis(monkeypatch):
    calls: list[tuple[str, tuple, dict]] = []

    def fake_create(*args, **kwargs):
        calls.append(("create", args, kwargs))
        return {"success": True}

    def fake_update(*args, **kwargs):
        calls.append(("update", args, kwargs))
        return {"success": True}

    monkeypatch.setattr(server.contracts, "create_ledger_account", fake_create)
    monkeypatch.setattr(server.contracts, "update_ledger_account", fake_update)

    assert server.create_ledger_account(
        "dated", last_balance=100, last_synced_at="2026-07-09T00:00:00Z",
        last_balance_basis_date="2026-06-30",
    )["success"]
    assert server.update_ledger_account(
        "account-1", last_balance=200, last_synced_at="2026-07-10T00:00:00Z",
        last_balance_basis_date="2026-07-01",
    )["success"]

    assert calls[0][2]["last_balance_basis_date"] == "2026-06-30"
    assert calls[1][2]["last_balance_basis_date"] == "2026-07-01"