from __future__ import annotations

import os
from typing import Any

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

import pytest
from PySide6.QtWidgets import QApplication, QWidget

from doctor_workstation.ui import shell as shell_module
from doctor_workstation.ui.shell import NavigationItem, ShellWindow


class _ShellPageDouble(QWidget):
    def __init__(
        self,
        _repository: Any,
        *,
        permissions: Any,
        current_user: Any,
    ) -> None:
        super().__init__()
        self.permissions = permissions
        self.current_user = current_user
        self.refresh_count = 0

    def refresh(self) -> None:
        self.refresh_count += 1


@pytest.fixture(scope="module")
def application() -> QApplication:
    return QApplication.instance() or QApplication([])


@pytest.fixture
def shell_window(
    application: QApplication,
    monkeypatch: pytest.MonkeyPatch,
) -> ShellWindow:
    navigation = [
        NavigationItem(key, title, glyph, _ShellPageDouble, (permission,))
        for key, title, glyph, permission in (
            ("reception", "接诊台", "◎", "doctor.appointment/lists"),
            ("appointments", "挂号列表", "号", "doctor.appointment/lists"),
            ("prescription_library", "我的处方库", "方", "tcm.prescriptionLibrary/lists"),
            ("prescriptions", "已开处方", "笺", "tcm.prescription/lists"),
            ("patients", "我的患者", "患", "firstvisit.myPatient/lists"),
            ("consultations", "问诊列表", "询", "tcm.diagnosis/lists"),
        )
    ]
    monkeypatch.setattr(
        shell_module,
        "_resolve_navigation",
        lambda _menu, _permissions, *, demo_mode: [(item, item.title) for item in navigation],
    )
    window = ShellWindow(
        object(),
        {
            "user": {"name": "陈医生", "department_name": "中医门诊", "role_ids": [1]},
            "demo_mode": True,
        },
        permissions={item.permissions[0] for item in navigation},
    )
    window.show()
    application.processEvents()
    yield window
    window.close()
    application.processEvents()


def test_shell_matches_admin_geometry_at_both_acceptance_sizes(
    application: QApplication,
    shell_window: ShellWindow,
) -> None:
    for width, height in ((1024, 640), (1440, 900)):
        shell_window.resize(width, height)
        application.processEvents()

        assert shell_window.sidebar.width() == 208
        assert shell_window.topbar.height() == 58
        assert shell_window.tabs_host.height() == 42
        assert shell_window.workspace.width() == width - 208
        assert shell_window.stack.width() == width - 208
        assert shell_window.stack.height() == height - 100
        assert shell_window.stack.geometry().right() < shell_window.workspace.width()
        assert shell_window.stack.geometry().bottom() < shell_window.workspace.height()

        image = shell_window.grab().toImage()
        assert image.pixelColor(20, 300).name().lower() == "#ffffff"
        assert image.pixelColor(500, 10).name().lower() == "#ffffff"
        assert image.pixelColor(220, 110).name().lower() == "#f5f7fb"


def test_every_visible_page_navigates_and_visited_tabs_track_active_page(
    shell_window: ShellWindow,
) -> None:
    changed: list[str] = []
    shell_window.page_changed.connect(changed.append)

    for key in (
        "reception",
        "appointments",
        "prescription_library",
        "prescriptions",
        "patients",
        "consultations",
    ):
        assert shell_window.navigate(key)
        assert shell_window.stack.currentWidget() is shell_window.pages[key]
        assert shell_window.nav_buttons[key].isChecked()
        assert shell_window.tab_bar.tabData(shell_window.tab_bar.currentIndex()) == key

    assert shell_window.visited_tab_keys() == (
        "reception",
        "appointments",
        "prescription_library",
        "prescriptions",
        "patients",
        "consultations",
    )
    assert changed[-6:] == [
        "reception",
        "appointments",
        "prescription_library",
        "prescriptions",
        "patients",
        "consultations",
    ]


def test_non_fixed_tabs_close_and_active_close_renavigates(
    shell_window: ShellWindow,
) -> None:
    for key in ("patients", "consultations"):
        assert shell_window.navigate(key)

    assert not shell_window.close_tab("reception")
    assert shell_window.close_tab("patients")
    assert "patients" not in shell_window.visited_tab_keys()
    assert shell_window.tab_bar.tabData(shell_window.tab_bar.currentIndex()) == "consultations"

    assert shell_window.close_current_tab()
    assert shell_window.tab_bar.tabData(shell_window.tab_bar.currentIndex()) == "reception"
    assert shell_window.stack.currentWidget() is shell_window.pages["reception"]
    assert shell_window.nav_buttons["reception"].isChecked()

    shell_window.close_all_tabs()
    assert shell_window.visited_tab_keys() == ("reception",)
    assert shell_window.stack.currentWidget() is shell_window.pages["reception"]


def test_sidebar_collapse_preserves_active_navigation(shell_window: ShellWindow) -> None:
    assert shell_window.navigate("consultations")

    shell_window.toggle_sidebar()
    assert shell_window.sidebar.width() == 72
    assert shell_window.nav_buttons["consultations"].text() == ""
    assert shell_window.nav_buttons["consultations"].isChecked()

    shell_window.toggle_sidebar()
    assert shell_window.sidebar.width() == 208
    assert shell_window.nav_buttons["consultations"].text().endswith("问诊列表")
    assert shell_window.nav_buttons["consultations"].isChecked()


def test_shell_directional_controls_have_no_unicode_arrow_text(
    shell_window: ShellWindow,
) -> None:
    assert shell_window.fold_button.text() == ""
    assert shell_window.refresh_button.text() == ""
    assert shell_window.fullscreen_button.text() == ""
    assert shell_window.tabs_menu_button.text() == ""
    assert all(
        arrow not in button.text()
        for button in shell_window.findChildren(QWidget)
        if hasattr(button, "text") and callable(button.text)
        for arrow in ("←", "→", "↑", "↓", "▲", "▼", "▴", "▾")
    )