from decimal import Decimal
import time

from grid_trading.domain.models import Instrument


def test_formatters_render_money_percent_and_empty_values():
    from grid_trading.ui.formatters import format_money, format_percent, format_price, format_quantity

    assert format_money(Decimal("1234.5")) == "1,234.50"
    assert format_price(Decimal("3.956")) == "3.96"
    assert format_percent(Decimal("0.1234")) == "12.34%"
    assert format_quantity(1200) == "1,200"
    assert format_money(None) == "-"


def test_main_window_can_be_constructed_offscreen(tmp_path, monkeypatch):
    monkeypatch.setenv("QT_QPA_PLATFORM", "offscreen")

    from PySide6.QtWidgets import QApplication, QPushButton

    from grid_trading.services.trading_service import TradingService
    from grid_trading.ui.main_window import MainWindow

    app = QApplication.instance() or QApplication([])
    service = TradingService(tmp_path / "grid.db")
    window = MainWindow(service)

    assert window.windowTitle() == "Grid Trading Manager"
    assert window.holdings_table.columnCount() > 0
    assert any(button.text() == "刷新行情" for button in window.findChildren(QPushButton))

    window.close()
    service.close()
    app.processEvents()


def test_quote_refresh_does_not_block_main_window(tmp_path, monkeypatch):
    monkeypatch.setenv("QT_QPA_PLATFORM", "offscreen")

    from PySide6.QtWidgets import QApplication

    from grid_trading.services.trading_service import TradingService
    from grid_trading.ui.main_window import MainWindow

    class SlowQuoteProvider:
        def fetch_quotes(self, instruments):
            time.sleep(0.3)
            return {}

    app = QApplication.instance() or QApplication([])
    service = TradingService(tmp_path / "grid.db", quote_provider=SlowQuoteProvider())
    service.ensure_defaults()
    service.add_instrument(Instrument(id=None, code="000001", name="Ping An Bank"))
    window = MainWindow(service)

    started_at = time.perf_counter()
    window._refresh_quotes()
    elapsed = time.perf_counter() - started_at

    assert elapsed < 0.15

    deadline = time.perf_counter() + 2
    while getattr(window, "_quote_thread", None) is not None and time.perf_counter() < deadline:
        app.processEvents()
        time.sleep(0.01)

    assert getattr(window, "_quote_thread", None) is None

    window.close()
    service.close()
    app.processEvents()