food-market/tests/test_ui_smoke.py

"""Дымовые тесты интерфейса: окно собирается, экраны рисуются, формы отдают данные.

Гоняются в offscreen-режиме, поэтому идут и в консоли, и без монитора.
Диалоги не показываются через exec() — вместо этого проверяется их содержимое
и то, что из него получается.
"""

import os
from datetime import timedelta
from decimal import Decimal

import pytest

os.environ.setdefault("QT_QPA_PLATFORM", "offscreen")

from PySide6.QtWidgets import QApplication  # noqa: E402

from app import journal  # noqa: E402
from app.models import KIND_FRIEND, KIND_RETAIL, KIND_SELF  # noqa: E402
from app.ui import theme  # noqa: E402
from app.ui.main_window import MainWindow  # noqa: E402
from app.ui.page_batches import BatchDialog  # noqa: E402
from app.ui.page_journal import JournalPage, describe  # noqa: E402
from app.ui.page_products import PriceDialog, ProductDialog  # noqa: E402
from app.ui.page_sales import SaleDialog, price_source_for  # noqa: E402


@pytest.fixture(scope="session")
def qapp():
    app = QApplication.instance() or QApplication([])
    theme.apply(app)
    return app


@pytest.fixture
def window(qapp, vault, buns, today, in_two_weeks):
    """Окно на живых данных: партия, розница, друг в долг, съеденное."""
    batch = journal.create_batch(
        vault,
        today,
        in_two_weeks,
        [
            {"product_id": buns["повидло"].id, "qty": 5, "unit_cost": 30},
            {"product_id": buns["мак"].id, "qty": 10, "unit_cost": 20},
            {"product_id": buns["корица"].id, "qty": 20, "unit_cost": 25},
        ],
    )
    vasya = journal.create_counterparty(vault, "Вася")
    journal.create_sale(
        vault, today, KIND_RETAIL, [{"product_id": buns["повидло"].id, "qty": 3, "unit_price": 50}]
    )
    journal.create_sale(
        vault, today, KIND_FRIEND, [{"product_id": buns["мак"].id, "qty": 5, "unit_price": 20}],
        counterparty_id=vasya.id, paid_amount=0,
    )
    journal.create_sale(
        vault, today, KIND_SELF, [{"product_id": buns["корица"].id, "qty": 2, "unit_price": 0}]
    )

    win = MainWindow(vault)
    win.batch = batch
    win.vasya = vasya
    yield win
    win.autosave_timer.stop()
    win.sync_timer.stop()
    win.close()
    win.deleteLater()


# --- окно целиком ---------------------------------------------------------


def page_of(window, title: str):
    """Найти экран по названию.

    Раньше тесты адресовали экраны по номеру в списке, и любой новый раздел
    в боковом меню ломал половину проверок.
    """
    return next(page for name, page in window.pages if name == title)


def test_window_builds_with_all_pages(window):
    titles = [title for title, _ in window.pages]
    assert titles == [
        "Сводка", "Закупки", "Продажи", "Долги",
        "Товары", "Статистика", "Журнал", "Настройки",
    ]
    assert window.stack.count() == len(titles)


def test_every_page_refreshes_without_errors(window):
    for index in range(len(window.pages)):
        window.sidebar.setCurrentRow(index)
        window.pages[index][1].refresh()


def test_changed_rebuilds_the_report(window, buns):
    before = window.report.summary.owed_to_bakery
    journal.add_bakery_payment(window.vault, 100, batch_id=window.batch.id)
    window.changed()
    assert window.report.summary.owed_to_bakery == before - 100


def test_autosave_writes_only_after_a_change(window):
    window.save_now()
    stamp = window.vault.path.stat().st_mtime_ns
    window._autosave()
    assert window.vault.path.stat().st_mtime_ns == stamp  # файл не трогали

    journal.create_product(window.vault, "Булка с изюмом", cost_price=22, retail_price=38)
    assert window.vault.revision != window._saved_revision
    window._autosave()
    assert window.vault.revision == window._saved_revision


def test_sync_is_skipped_without_a_remote(window):
    """Без адреса репозитория фоновый тик не должен ничего делать."""
    window.sync_now(quiet=True)
    assert window._syncing is False


def test_git_always_targets_the_data_folder(window):
    """Приложение не должно распоряжаться репозиторием с исходниками.

    exe обычно лежит в корне клона с кодом, и папка data — внутри него.
    Если git начать с корня приложения, оно перепишет исходникам origin
    и запушит их в репозиторий данных. Ровно это однажды и произошло.
    """
    from app import paths

    sync = window._git()
    assert sync.repo_dir == paths.data_dir()
    assert sync.repo_dir != paths.app_root()
    assert sync.rel_path == "vault.fmdb"
    assert "/" not in sync.rel_path  # база лежит в корне своего репозитория


def test_no_other_place_builds_git_by_hand():
    """Единственная точка создания GitSync — MainWindow._git()."""
    from pathlib import Path

    source = Path("app/ui/main_window.py").read_text(encoding="utf-8")
    # Одно вхождение — внутри самого _git(); остальные зовут его.
    assert source.count("GitSync(") == 1
    assert "paths.app_root()" not in source


# --- таблицы наполняются --------------------------------------------------


def test_batches_table_shows_the_batch(window):
    page = page_of(window, "Закупки")
    page.refresh()
    assert page.table.rowCount() == 1
    assert page.table.item(0, 0).text() == "1"
    assert "850" in page.table.item(0, 4).text()


def test_batch_details_show_coverage(window):
    page = page_of(window, "Закупки")
    page.refresh()
    page.table.selectRow(0)
    page._show_details()

    assert "Партия" in page.details_title.text()
    assert page.progress.value() == 17  # 150 из 850
    assert page.contents.rowCount() == 3


def test_sales_table_lists_every_kind(window):
    page = page_of(window, "Продажи")
    page.refresh()
    assert page.table.rowCount() == 3


def test_sales_filter_narrows_the_list(window):
    page = page_of(window, "Продажи")
    page.filter.setCurrentIndex(page.filter.findData(KIND_SELF))
    page.refresh()
    assert page.table.rowCount() == 1


def test_debts_tree_groups_by_person(window):
    page = page_of(window, "Долги")
    page.refresh()
    assert page.tree.topLevelItemCount() == 1

    person = page.tree.topLevelItem(0)
    assert person.text(0) == "Вася"
    assert "100" in person.text(4)
    assert person.childCount() == 1


def test_products_table_shows_stock_and_margin(window):
    page = page_of(window, "Товары")
    page.refresh()
    names = [page.table.item(r, 0).text() for r in range(page.table.rowCount())]
    assert "Булка с маком" in names

    row = names.index("Булка с маком")
    assert "15" in page.table.item(row, 5).text()  # наценка: 35 − 20
    assert page.table.item(row, 6).text() == "5"  # 10 закуплено − 5 отдано


def test_archived_products_are_hidden_by_default(window, buns):
    page = page_of(window, "Товары")
    journal.update_product(window.vault, buns["мак"].id, archived=True)
    window.changed()

    visible = [page.table.item(r, 0).text() for r in range(page.table.rowCount())]
    assert "Булка с маком" not in visible

    page.show_archived.setChecked(True)
    visible = [page.table.item(r, 0).text() for r in range(page.table.rowCount())]
    assert "Булка с маком" in visible


# --- сводка ---------------------------------------------------------------


def test_dashboard_renders_metrics_and_deadline(window):
    from PySide6.QtWidgets import QLabel, QProgressBar

    page = page_of(window, "Сводка")
    page.refresh()

    texts = " ".join(label.text() for label in page.body.findChildren(QLabel))
    assert "Долг пекарне" in texts
    assert "850,00 ₽" in texts  # вся себестоимость партии ещё не возвращена
    assert "Мне должны" in texts
    assert "100,00 ₽" in texts  # долг Васи
    # Остаток показан деньгами и позициями, а не суммой разных единиц.
    assert "610,00 ₽" in texts
    assert "позиций: 3" in texts

    bars = page.body.findChildren(QProgressBar)
    assert len(bars) == 1
    assert bars[0].value() == 17  # собрано 150 из 850


def test_dashboard_shows_a_warning_when_oversold(window, buns):
    page = page_of(window, "Сводка")
    journal.create_sale(
        window.vault, window.report.today, KIND_RETAIL,
        [{"product_id": buns["повидло"].id, "qty": 99, "unit_price": 50}],
    )
    window.changed()
    assert any("больше" in warning for warning in window.report.warnings)


# --- журнал ---------------------------------------------------------------


def test_journal_page_lists_entries(window):
    page = page_of(window, "Журнал")
    page.refresh()
    assert page.table.rowCount() == len(window.vault.doc.journal)


def test_journal_search_filters(window, buns):
    page = page_of(window, "Журнал")
    journal.change_prices(window.vault, buns["мак"].id, cost_price=25, retail_price=40)
    window.changed()

    page.search.setText("цены изменены")
    page.refresh()
    assert page.table.rowCount() == 1
    assert "20,00 ₽ → 25,00 ₽" in page.table.item(0, 4).text()


def test_journal_search_matches_what_is_displayed(window, buns):
    """Формат на экране и то, что ищется, должны совпадать до пробела."""
    page = page_of(window, "Журнал")
    journal.change_prices(window.vault, buns["мак"].id, cost_price=1500, retail_price=2000)
    window.changed()

    page.search.setText("1 500,00")
    page.refresh()
    assert page.table.rowCount() == 1


def test_journal_entity_filter(window):
    page = page_of(window, "Журнал")
    page.entity.setCurrentIndex(page.entity.findData("batch"))
    page.refresh()
    assert page.table.rowCount() == 1


def test_describe_renders_a_transition():
    from app.models import Change, JournalEntry

    entry = JournalEntry(
        id="j_1", ts="", host="", action="product.price_change",
        entity="product", entity_id="p_1", label="Булка",
        changes=[Change("себестоимость", "20,00 ₽", "25,00 ₽")],
    )
    assert describe(entry) == "себестоимость: 20,00 ₽ → 25,00 ₽"


# --- формы ----------------------------------------------------------------


def test_batch_dialog_round_trips_lines(window):
    dialog = BatchDialog(window, window.batch)
    lines = dialog.lines.lines("unit_cost")

    assert len(lines) == 3
    assert dialog.lines.total() == Decimal("850.00")
    assert lines[0]["unit_cost"] == Decimal("30.00")
    dialog.deleteLater()


def test_batch_dialog_defaults_the_deadline_from_settings(window):
    window.vault.doc.settings.default_period_days = 21
    dialog = BatchDialog(window)
    assert (dialog.due.get_date() - dialog.date.get_date()).days == 21
    dialog.deleteLater()


def test_batch_dialog_deadline_follows_the_purchase_date(window):
    dialog = BatchDialog(window)
    dialog.date.set_date(dialog.date.get_date() + timedelta(days=5))
    days = window.vault.doc.settings.default_period_days
    assert (dialog.due.get_date() - dialog.date.get_date()).days == days
    dialog.deleteLater()


def test_sale_dialog_substitutes_price_by_kind(window, buns):
    """Ради этого и заведены типы: другу — себестоимость, себе — ноль."""
    dialog = SaleDialog(window)
    dialog.lines.table.cellWidget(0, 0).select_product(buns["мак"].id)

    dialog.kind.setCurrentIndex(0)  # розница
    assert dialog.lines.lines("unit_price")[0]["unit_price"] == Decimal("35.00")

    dialog.kind.setCurrentIndex(1)  # другу по себестоимости
    assert dialog.lines.lines("unit_price")[0]["unit_price"] == Decimal("20.00")

    dialog.kind.setCurrentIndex(2)  # съел сам
    assert dialog.lines.lines("unit_price")[0]["unit_price"] == Decimal("0.00")
    dialog.deleteLater()


def test_sale_dialog_disables_payment_for_consumption(window):
    dialog = SaleDialog(window)
    dialog.kind.setCurrentIndex(2)  # съел сам
    assert dialog.paid.isEnabled() is False
    assert dialog.paid.value_decimal() == 0
    dialog.deleteLater()


def test_sale_dialog_prefills_full_payment(window, buns):
    dialog = SaleDialog(window)
    dialog.lines.table.cellWidget(0, 0).select_product(buns["мак"].id)
    dialog.lines.table.cellWidget(0, 1).set_decimal(4)

    assert dialog.paid.value_decimal() == Decimal("140.00")  # 4 × 35
    assert "полностью" in dialog.paid_hint.text()
    dialog.deleteLater()


def test_price_source_for_each_kind(buns):
    bun = buns["мак"]
    assert price_source_for(KIND_RETAIL)(bun, "шт") == Decimal("35.00")
    assert price_source_for(KIND_FRIEND)(bun, "шт") == Decimal("20.00")
    assert price_source_for(KIND_SELF)(bun, "шт") == 0


def test_price_source_uses_the_pack_price(vault, buns):
    """Пачка стоит своих денег, а не десяти поштучных цен."""
    from app import journal as j

    cookies = j.create_product(vault, "Печенье", unit="шт", cost_price=20, retail_price=30)
    j.set_packs(vault, cookies.id, [{"name": "пачка", "size": 10, "retail_price": 200}])
    cookies = vault.doc.product(cookies.id)

    assert price_source_for(KIND_RETAIL)(cookies, "шт") == Decimal("30.00")
    assert price_source_for(KIND_RETAIL)(cookies, "пачка") == Decimal("200.00")
    assert price_source_for(KIND_FRIEND)(cookies, "пачка") == Decimal("200.00")  # 10 × 20


def test_price_dialog_shows_history(window, buns):
    journal.change_prices(window.vault, buns["мак"].id, cost_price=25, retail_price=40)
    dialog = PriceDialog("₽", window.vault.doc.product(buns["мак"].id))

    assert dialog.cost.value_decimal() == Decimal("25.00")
    dialog.deleteLater()


def test_product_dialog_hides_prices_when_editing(window, buns):
    """Цены правятся только через историю — иначе она бы врала."""
    editing = ProductDialog("₽", window.vault.doc.product(buns["мак"].id))
    assert not hasattr(editing, "cost")
    editing.deleteLater()

    creating = ProductDialog("₽")
    assert hasattr(creating, "cost")
    creating.deleteLater()


def test_lines_editor_switches_price_with_the_pack(window):
    """Выбрал пачку — цена и подпись меняются, товар остаётся тем же."""
    from app import journal as j

    cookies = j.create_product(window.vault, "Печенье", unit="шт", cost_price=20, retail_price=30)
    j.set_packs(window.vault, cookies.id, [{"name": "пачка", "size": 10, "retail_price": 200}])
    window.changed()

    dialog = SaleDialog(window)
    editor = dialog.lines
    editor.table.cellWidget(0, editor.COL_PRODUCT).select_product(cookies.id)

    uom = editor.table.cellWidget(0, editor.COL_UOM)
    assert [uom.itemText(i) for i in range(uom.count())] == ["шт", "пачка"]
    assert uom.isEnabled() is True
    assert editor.lines("unit_price")[0]["unit_price"] == Decimal("30.00")

    uom.setCurrentText("пачка")
    line = editor.lines("unit_price")[0]
    assert line["uom"] == "пачка"
    assert line["unit_price"] == Decimal("200.00")
    dialog.deleteLater()


def test_pack_price_still_applies_after_deleting_a_row(window, buns):
    """Обработчики строк не должны держаться за номер строки.

    После удаления строки всё, что было ниже, съезжает вверх. Запомненный
    номер начинал указывать на соседа или за пределы таблицы, и строка
    молча переставала работать: выбираешь фасовку, а цена не меняется.
    """
    from app import journal as j

    cookies = j.create_product(window.vault, "Печенье", unit="шт", cost_price=20, retail_price=30)
    j.set_packs(window.vault, cookies.id, [{"name": "пачка", "size": 10, "retail_price": 200}])
    window.changed()

    dialog = BatchDialog(window)
    editor = dialog.lines
    editor.add_line()
    editor.table.cellWidget(1, editor.COL_PRODUCT).select_product(cookies.id)

    # Удаляем первую строку — печенье переезжает на её место.
    editor.table.setCurrentCell(0, 0)
    editor.remove_current()
    assert editor.table.rowCount() == 1

    editor.table.cellWidget(0, editor.COL_UOM).setCurrentText("пачка")
    line = editor.lines("unit_cost")[0]
    assert line["uom"] == "пачка"
    assert line["unit_cost"] == Decimal("200.00")  # 20 за штуку × 10
    dialog.deleteLater()


def test_product_change_still_refills_packs_after_deleting_a_row(window, buns):
    from app import journal as j

    cookies = j.create_product(window.vault, "Печенье", unit="шт", cost_price=20, retail_price=30)
    j.set_packs(window.vault, cookies.id, [{"name": "пачка", "size": 10, "retail_price": 200}])
    window.changed()

    dialog = SaleDialog(window)
    editor = dialog.lines
    editor.add_line()
    editor.table.setCurrentCell(0, 0)
    editor.remove_current()

    # Строка переехала наверх — выбор товара обязан пересобрать её фасовки.
    editor.table.cellWidget(0, editor.COL_PRODUCT).select_product(cookies.id)
    uom = editor.table.cellWidget(0, editor.COL_UOM)
    assert [uom.itemText(i) for i in range(uom.count())] == ["шт", "пачка"]
    assert editor.lines("unit_price")[0]["unit_price"] == Decimal("30.00")
    dialog.deleteLater()


def test_row_of_finds_the_current_position(qapp):
    from PySide6.QtWidgets import QLineEdit, QTableWidget

    from app.ui import widgets as wd

    table = QTableWidget(3, 1)
    fields = [QLineEdit() for _ in range(3)]
    for index, field in enumerate(fields):
        table.setCellWidget(index, 0, field)

    assert wd.row_of(table, fields[2]) == 2
    table.removeRow(0)
    assert wd.row_of(table, fields[2]) == 1  # съехал вверх
    assert wd.row_of(table, fields[0]) == -1  # удалён
    table.deleteLater()


def test_pack_column_is_disabled_without_packs(window, buns):
    dialog = SaleDialog(window)
    editor = dialog.lines
    editor.table.cellWidget(0, editor.COL_PRODUCT).select_product(buns["мак"].id)

    uom = editor.table.cellWidget(0, editor.COL_UOM)
    assert uom.currentText() == "шт"
    assert uom.isEnabled() is False
    dialog.deleteLater()


def test_packs_editor_shows_the_derived_cost(window):
    """Себестоимость фасовки нигде не вводится — надо показать, откуда она.

    Иначе легко указать в карточке цену за пачку вместо цены за штуку,
    и подставляемая в закупку сумма окажется больше в размер фасовки.
    """
    from app import journal as j
    from app.ui.page_products import ProductDialog as PD

    cookies = j.create_product(window.vault, "Печенье", unit="шт", cost_price=20, retail_price=30)
    j.set_packs(window.vault, cookies.id, [{"name": "пачка", "size": 10, "retail_price": 200}])

    dialog = PD("₽", window.vault.doc.product(cookies.id))
    assert "пачка = 10 шт" in dialog.packs.derived.text()
    assert "200,00 ₽" in dialog.packs.derived.text()  # 20 за штуку × 10
    dialog.deleteLater()


def test_derived_cost_follows_the_price_field(window):
    from app.ui.page_products import ProductDialog as PD

    dialog = PD("₽")
    dialog.cost.set_decimal(20)
    dialog.packs.add_pack("пачка", 10, 200)
    assert "200,00 ₽" in dialog.packs.derived.text()

    dialog.cost.set_decimal(25)
    assert "250,00 ₽" in dialog.packs.derived.text()
    dialog.deleteLater()


def test_packs_editor_round_trip(window):
    from app import journal as j
    from app.ui.page_products import ProductDialog as PD

    cookies = j.create_product(window.vault, "Печенье", unit="шт", cost_price=20, retail_price=30)
    j.set_packs(window.vault, cookies.id, [{"name": "пачка", "size": 10, "retail_price": 200}])

    dialog = PD("₽", window.vault.doc.product(cookies.id))
    assert dialog.packs.packs() == [
        {"name": "пачка", "size": Decimal("10.000"), "retail_price": Decimal("200.00")}
    ]
    dialog.deleteLater()


def test_lines_editor_add_and_remove(window, buns):
    dialog = BatchDialog(window)
    editor = dialog.lines
    start = editor.table.rowCount()

    editor.add_line(buns["мак"].id, 7, 20)
    assert len(editor.lines("unit_cost")) == start + 1

    editor.table.setCurrentCell(editor.table.rowCount() - 1, 0)
    editor.remove_current()
    assert len(editor.lines("unit_cost")) == start
    dialog.deleteLater()


# --- пекарня простила остаток ---------------------------------------------


def test_payment_dialog_offers_to_write_off_the_remainder(window):
    """Надо было 850, отдал 800 — полсотни предлагается списать."""
    from app.ui.page_batches import PaymentDialog

    batch = window.vault.doc.batches[0]
    dialog = PaymentDialog(window, batch, suggested=850)

    dialog.amount.set_decimal(800)
    assert dialog.remainder == Decimal("50.00")
    assert dialog.wants_write_off() is False
    assert "останется долг" in dialog.hint.text().lower()

    dialog.write_off.setChecked(True)
    assert dialog.wants_write_off() is True
    assert "скидку пекарни" in dialog.hint.text()
    dialog.deleteLater()


def test_full_payment_leaves_nothing_to_write_off(window):
    from app.ui.page_batches import PaymentDialog

    batch = window.vault.doc.batches[0]
    dialog = PaymentDialog(window, batch, suggested=850)

    dialog.write_off.setChecked(True)
    assert dialog.remainder == 0
    assert dialog.wants_write_off() is False  # списывать нечего
    assert "закроется полностью" in dialog.hint.text()
    dialog.deleteLater()


def test_write_off_closes_the_batch_end_to_end(window):
    from app import ledger
    from app import journal as j

    batch = window.vault.doc.batches[0]
    j.add_bakery_payment(window.vault, 800, batch_id=batch.id)
    j.write_off_batch(window.vault, batch.id, 50)
    window.changed()

    report = window.report.batch_report(batch.id)
    assert report.paid_to_bakery == Decimal("800.00")
    assert report.discount == Decimal("50.00")
    assert report.remaining_to_bakery == 0
    assert report.status == ledger.STATUS_SETTLED
    assert window.report.summary.owed_to_bakery == 0


def test_batches_table_shows_the_discount(window):
    from app import journal as j

    batch = window.vault.doc.batches[0]
    j.write_off_batch(window.vault, batch.id, 50)
    window.changed()

    page = page_of(window, "Закупки")
    page.refresh()
    assert "50,00" in page.table.item(0, 6).text()

    page.table.selectRow(0)
    page._show_details()
    assert "пекарня простила" in page.details_line.text()


def test_dashboard_mentions_forgiven_money(window):
    from PySide6.QtWidgets import QLabel

    from app import journal as j

    batch = window.vault.doc.batches[0]
    j.write_off_batch(window.vault, batch.id, 50)
    window.changed()

    page = page_of(window, "Сводка")
    page.refresh()
    texts = " ".join(label.text() for label in page.body.findChildren(QLabel))
    assert "прощено 50,00 ₽" in texts.lower()


def test_stats_periods_show_the_discount(window):
    from app import journal as j

    batch = window.vault.doc.batches[0]
    j.write_off_batch(window.vault, batch.id, 50)
    window.changed()

    page = page_of(window, "Статистика")
    page.tabs.setCurrentIndex(0)
    page.refresh()

    tab = page.sections[0][1]
    assert "50,00" in tab.table.item(0, tab.COLUMNS.index("Прощено")).text()


# --- статистика -----------------------------------------------------------


def test_stats_page_has_every_section(window):
    page = page_of(window, "Статистика")
    titles = [page.tabs.tabText(i) for i in range(page.tabs.count())]
    assert titles == ["Периоды", "Недели", "Месяцы", "Годы", "Товары", "Люди"]


def test_stats_sections_all_render(window):
    page = page_of(window, "Статистика")
    for index in range(page.tabs.count()):
        page.tabs.setCurrentIndex(index)
        page.refresh()
        assert page.sections[index][1].table.rowCount() >= 0


def test_stats_periods_show_the_batch(window):
    page = page_of(window, "Статистика")
    page.tabs.setCurrentIndex(0)
    page.refresh()

    tab = page.sections[0][1]
    assert tab.table.rowCount() == 1
    assert tab.table.item(0, 0).text() == "№1"
    assert "850" in tab.table.item(0, 4).text()  # долг по партии
    assert "Периодов: 1" in tab.headline.text()


def test_stats_months_carry_a_totals_row(window):
    """Последняя строка — итог, иначе цифры приходится складывать в уме."""
    page = page_of(window, "Статистика")
    page.tabs.setCurrentIndex(2)
    page.refresh()

    tab = page.sections[2][1]
    assert tab.table.rowCount() == len(tab.buckets) + 1
    assert tab.table.item(tab.table.rowCount() - 1, 0).text() == "Итого"


def test_stats_metric_switch_redraws_the_chart(window):
    page = page_of(window, "Статистика")
    page.tabs.setCurrentIndex(2)
    page.refresh()

    tab = page.sections[2][1]
    tab.metric_box.setCurrentIndex(1)  # Выручка
    assert "Выручка за всё время" in tab.headline.text()
    assert len(tab.chart.bars) == len(tab.buckets)


def test_stats_products_rank_by_margin(window):
    """Таблица и график должны отвечать одинаково: сортировка по заработку."""
    page = page_of(window, "Статистика")
    page.tabs.setCurrentIndex(4)
    page.refresh()

    tab = page.sections[4][1]
    names = [tab.table.item(r, 0).text() for r in range(tab.table.rowCount())]
    assert names[0] == "Булка с повидлом"  # единственная с наценкой
    assert names[0] == tab.chart.bars[0].label


def test_stats_people_table_matches_its_chart(window):
    page = page_of(window, "Статистика")
    page.tabs.setCurrentIndex(5)
    page.refresh()

    tab = page.sections[5][1]
    names = [tab.table.item(r, 0).text() for r in range(tab.table.rowCount())]
    assert names == [bar.label for bar in tab.chart.bars]


def test_stats_people_show_the_debt(window):
    page = page_of(window, "Статистика")
    page.tabs.setCurrentIndex(5)
    page.refresh()

    tab = page.sections[5][1]
    rows = {tab.table.item(r, 0).text(): r for r in range(tab.table.rowCount())}
    assert "100,00 ₽" in tab.table.item(rows["Вася"], 5).text()
    assert "должны в сумме: 100,00 ₽" in tab.headline.text()


def test_stats_survive_an_empty_database(qapp, vault):
    """Пустая база не должна ронять ни один разрез."""
    from app.ui.main_window import MainWindow as MW

    win = MW(vault)
    win.autosave_timer.stop()
    win.sync_timer.stop()

    page = next(p for name, p in win.pages if name == "Статистика")
    for index in range(page.tabs.count()):
        page.tabs.setCurrentIndex(index)
        page.refresh()
        assert page.sections[index][1].table.rowCount() == 0

    win.close()
    win.deleteLater()


def test_chart_handles_losses(qapp):
    """Убыток — нормальная величина, столбик должен уходить вниз от нуля."""
    from decimal import Decimal as D

    from app.ui.chart import Bar, BarChart

    chart = BarChart()
    chart.set_bars([Bar("янв", D("100")), Bar("фев", D("-40")), Bar("мар", D("0"))])
    chart.resize(400, 200)
    chart.grab()  # отрисовка не должна падать
    assert len(chart.bars) == 3
    chart.deleteLater()


def test_chart_handles_all_zeroes(qapp):
    from decimal import Decimal as D

    from app.ui.chart import Bar, BarChart

    chart = BarChart()
    chart.set_bars([Bar("янв", D("0")), Bar("фев", D("0"))])
    chart.resize(400, 200)
    chart.grab()
    chart.deleteLater()


def test_empty_chart_says_so(qapp):
    from app.ui.chart import BarChart

    chart = BarChart()
    chart.resize(400, 200)
    chart.grab()
    assert chart.bars == []
    chart.deleteLater()


# --- чаевые ---------------------------------------------------------------


def test_overpayment_moves_into_tips(window, buns):
    """Булка 70, дали 100 — разница должна уехать в чаевые сама."""
    dialog = SaleDialog(window)
    editor = dialog.lines
    editor.table.cellWidget(0, editor.COL_PRODUCT).select_product(buns["мак"].id)
    editor.table.cellWidget(0, editor.COL_QTY).set_decimal(2)

    dialog.paid.set_decimal(100)
    dialog._absorb_overpayment()

    assert dialog.paid.value_decimal() == Decimal("70.00")
    assert dialog.tip.value_decimal() == Decimal("30.00")
    assert "чаевые" in dialog.paid_hint.text().lower()
    dialog.deleteLater()


def test_underpayment_is_left_as_debt(window, buns):
    """Недоплата — это долг, а не отрицательные чаевые."""
    dialog = SaleDialog(window)
    editor = dialog.lines
    editor.table.cellWidget(0, editor.COL_PRODUCT).select_product(buns["мак"].id)
    editor.table.cellWidget(0, editor.COL_QTY).set_decimal(2)

    dialog.paid.set_decimal(40)
    dialog._absorb_overpayment()

    assert dialog.paid.value_decimal() == Decimal("40.00")
    assert dialog.tip.value_decimal() == 0
    assert "долг" in dialog.paid_hint.text().lower()
    dialog.deleteLater()


def test_consumption_disables_tips(window, buns):
    dialog = SaleDialog(window)
    dialog.kind.setCurrentIndex(2)  # съел сам
    assert dialog.tip.isEnabled() is False
    assert dialog.tip.value_decimal() == 0
    dialog.deleteLater()


def test_existing_sale_can_have_its_tip_edited(window, buns):
    """Сдачу могли оставить и после того, как продажу занесли."""
    sale = window.vault.doc.sales[0]
    journal.set_sale_tip(window.vault, sale.id, 15)
    window.changed()

    dialog = SaleDialog(window, sale)
    assert dialog.tip.value_decimal() == Decimal("15.00")
    assert dialog.paid is None  # платежи правятся на экране долгов
    dialog.deleteLater()


def test_sales_table_shows_tips(window, buns):
    sale = window.vault.doc.sales[0]
    journal.set_sale_tip(window.vault, sale.id, 25)
    window.changed()

    page = page_of(window, "Продажи")
    page.refresh()
    tips = [page.table.item(r, 6).text() for r in range(page.table.rowCount())]
    assert any("25,00" in t for t in tips)
    # У продаж без чаевых колонка пустая, а не «0,00 ₽».
    assert "" in tips


def test_dashboard_mentions_tips_only_when_there_are_any(window, buns):
    from PySide6.QtWidgets import QLabel

    page = page_of(window, "Сводка")
    page.refresh()
    texts = " ".join(label.text() for label in page.body.findChildren(QLabel))
    assert "чаевые" not in texts.lower()

    journal.set_sale_tip(window.vault, window.vault.doc.sales[0].id, 40)
    window.changed()
    texts = " ".join(label.text() for label in page.body.findChildren(QLabel))
    assert "чаевые 40,00 ₽" in texts.lower()


# --- дробные количества ---------------------------------------------------


def type_into(spin, text: str):
    """Набрать текст в поле так, как это делает пользователь."""
    spin.clear()
    spin.lineEdit().setText(text)
    spin.interpretText()
    return spin


def test_dot_is_accepted_as_decimal_separator(qapp):
    """На цифровой клавиатуре точка, а локаль русская — ждёт запятую.

    Без нормализации символ молча не появлялся бы в поле, и выглядело бы это
    так, будто дробные значения вводить нельзя вообще.
    """
    from PySide6.QtGui import QValidator

    from app.ui.widgets import MoneySpin, QtySpin

    for spin in (QtySpin(), MoneySpin()):
        for text in ("0,5", "0.5", "12.75", "12,75"):
            state, fixed, _ = spin.validate(text, len(text))
            assert state != QValidator.Invalid, f"{type(spin).__name__} отверг {text!r}"
            assert "." not in fixed
        spin.deleteLater()


def test_both_separators_give_the_same_value(qapp):
    from app.ui.widgets import QtySpin

    assert type_into(QtySpin(), "0.5").value_decimal() == Decimal("0.500")
    assert type_into(QtySpin(), "0,5").value_decimal() == Decimal("0.500")


def test_group_separators_are_tolerated(qapp):
    from app.ui.widgets import MoneySpin

    assert type_into(MoneySpin(), "1 200,50").value_decimal() == Decimal("1200.50")


def test_letters_are_still_rejected(qapp):
    from PySide6.QtGui import QValidator

    from app.ui.widgets import QtySpin

    state, _, _ = QtySpin().validate("abc", 3)
    assert state == QValidator.Invalid


def test_fractional_line_round_trips_through_the_form(window):
    """Пол-литра сока, введённые в форме, должны дойти до документа."""
    from app import journal as j

    juice = j.create_product(window.vault, "Сок", unit="л", cost_price=80, retail_price=120)
    window.changed()

    dialog = SaleDialog(window)
    editor = dialog.lines
    editor.table.cellWidget(0, editor.COL_PRODUCT).select_product(juice.id)
    type_into(editor.table.cellWidget(0, editor.COL_QTY), "0.5")

    line = editor.lines("unit_price")[0]
    assert line["qty"] == Decimal("0.500")
    assert editor.total() == Decimal("60.00")  # 0,5 × 120
    dialog.deleteLater()


def test_fractional_pack_size_round_trips(window):
    from app import journal as j
    from app.ui.page_products import ProductDialog as PD

    juice = j.create_product(window.vault, "Сок", unit="л", cost_price=80, retail_price=120)
    j.set_packs(window.vault, juice.id, [{"name": "бутылка", "size": "1.5", "retail_price": 170}])

    dialog = PD("₽", window.vault.doc.product(juice.id))
    assert dialog.packs.packs()[0]["size"] == Decimal("1.500")
    dialog.deleteLater()


def test_fractional_quantity_is_displayed_without_trailing_zeros(window):
    from app import journal as j
    from app.models import KIND_RETAIL as RETAIL

    juice = j.create_product(window.vault, "Сок", unit="л", cost_price=80, retail_price=120)
    j.create_sale(
        window.vault, window.report.today, RETAIL,
        [{"product_id": juice.id, "qty": "0.5", "unit_price": 120}],
    )
    window.changed()

    page = page_of(window, "Продажи")
    page.refresh()
    texts = [page.table.item(r, 3).text() for r in range(page.table.rowCount())]
    assert any("Сок × 0,5 л" in t for t in texts)


# --- настройки ------------------------------------------------------------


def test_settings_shows_database_facts(window):
    page = page_of(window, "Настройки")
    page.refresh()
    assert "товаров 3" in page.db_info.text()
    assert "закупок 1" in page.db_info.text()


def test_settings_saves_git_without_wiping_the_token(window):
    """Пустое поле токена означает «не трогать», а не «стереть»."""
    page = page_of(window, "Настройки")
    journal.update_settings(window.vault, git={"token": "glpat-keepme"})
    page.refresh()

    page.remote.setText("https://gt.ser.gay/kizya/food-market.git")
    page.token.clear()
    page.save_git()

    assert window.vault.doc.settings.git.token == "glpat-keepme"
    assert window.vault.doc.settings.git.remote_url == "https://gt.ser.gay/kizya/food-market.git"


def test_conflict_block_is_hidden_until_there_is_one(window):
    page = page_of(window, "Настройки")
    page.refresh()
    assert page.conflict_box.isVisibleTo(page) is False

    window.conflict_message = "версии разошлись"
    page.refresh()
    assert page.conflict_box.isVisibleTo(page) is True