"""Real prescription pages append server pages without losing row actions."""

import os

os.environ.setdefault("QT_QPA_PLATFORM", "offscreen")
from types import SimpleNamespace

import pytest
from PySide6.QtCore import Qt
from PySide6.QtTest import QTest
from PySide6.QtWidgets import QApplication

from doctor_workstation.ui.pages import prescription_library, prescriptions


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


def inline(function, *, on_success, on_error, on_finished):
    try:
        result = function()
    except Exception as error:
        on_error(error)
    else:
        on_success(result)
    finally:
        on_finished()


class Repository:
    def __init__(self):
        self.calls = []

    def get(self, **q):
        self.calls.append(dict(q))
        start = (q["page_no"] - 1) * q["page_size"]
        return {
            "lists": [
                {
                    "id": i,
                    "prescription_name": f"Template {i}",
                    "sn": f"RX{i}",
                    "patient_name": f"Patient {i}",
                    "creator_id": 1,
                    "is_public": False,
                    "efficacy": "清热祛湿" if i > 15 else "益气养阴",
                    "herbs": [],
                    "create_time": "2026-09-01 10:00",
                }
                for i in range(start + 1, min(start + q["page_size"], 37) + 1)
            ],
            "count": 37,
            "extend": {"doctors": [{"id": 1, "name": "Doctor"}]},
        }

    list_prescriptions = get
    list_prescription_templates = get


@pytest.mark.parametrize(
    "module,cls",
    [
        (prescriptions, prescriptions.PrescriptionsPage),
        (prescription_library, prescription_library.PrescriptionLibraryPage),
    ],
)
def test_scroll_append_refresh_and_filter_reset(app, monkeypatch, module, cls):
    monkeypatch.setattr(module, "run_async", inline)
    repo = Repository()
    page = cls(repo, {"*"}, SimpleNamespace(id=1, root=1, role_ids=[]))
    page.resize(1250, 760)
    page.show()
    page.refresh()
    # Let deferred filter/table geometry settle before scrolling its real viewport.
    for _ in range(3):
        app.processEvents()
        QTest.qWait(35)
    assert page.table.rowCount() == 15
    page.table.selectRow(4)
    before_id = page.table.current_data()["id"]
    page.table.verticalScrollBar().setValue(page.table.verticalScrollBar().maximum())
    for _ in range(50):
        if page.table.rowCount() == 30:
            break
        QTest.qWait(20)
    assert page.table.rowCount() == 30 and page.table.current_data()["id"] == before_id
    assert (
        len({page.table.item(r, 0).data(Qt.ItemDataRole.UserRole)["id"] for r in range(30)}) == 30
    )
    page.refresh()
    assert page.table.rowCount() == 30
    assert [q["page_no"] for q in repo.calls[-2:]] == [1, 2]
    page.table.verticalScrollBar().setValue(page.table.verticalScrollBar().maximum())
    QTest.qWait(90)
    assert page.table.rowCount() == 37 and not page.pager.has_more
    edit = page.name_filter if module is prescription_library else page.patient_filter
    edit.setText("changed")
    page._search()
    assert page.table.rowCount() == 15 and repo.calls[-1]["page_no"] == 1
    assert page.pager.height() == 24 and page.layout().contentsMargins().bottom() == 8
    page.close()


def test_local_effect_filter_continues_until_matching_rows_are_visible(app, monkeypatch):
    monkeypatch.setattr(prescription_library, "run_async", inline)
    page = prescription_library.PrescriptionLibraryPage(
        Repository(), {"*"}, SimpleNamespace(id=1, root=1, role_ids=[])
    )
    page.resize(1250, 760)
    page.show()
    page.effect_filter.setCurrentIndex(page.effect_filter.findData("清热祛湿"))
    page._search()
    QTest.qWait(180)
    assert page.table.rowCount() >= 15
    assert page.table.item(0, 0).data(Qt.ItemDataRole.UserRole)["id"] > 15
    page.close()


def test_audit_status_sort_keeps_actions_on_the_visible_prescription(app, monkeypatch):
    from PySide6.QtWidgets import QPushButton

    monkeypatch.setattr(prescriptions, "run_async", inline)

    class AuditRepository(Repository):
        def get(self, **query):
            result = super().get(**query)
            for row in result["lists"]:
                identifier = row["id"]
                row.update(
                    audit_status=identifier % 3,
                    audit_remark="rejected reason" if identifier % 3 == 2 else "",
                    business_prescription_audit_rejected=identifier % 2 == 0,
                    business_prescription_audit_remark="business reason"
                    if identifier % 2 == 0
                    else "",
                )
            return result

        list_prescriptions = get

    page = prescriptions.PrescriptionsPage(AuditRepository(), {"*"}, SimpleNamespace(id=1))
    page.refresh()
    opened = []
    page._view_selected = lambda: opened.append(page.table.current_data()["id"])
    page.table.sortItems(6, Qt.SortOrder.DescendingOrder)
    page.pager.load_more()
    page.refresh()
    assert page.table.rowCount() == 30
    for row in range(page.table.rowCount()):
        expected = page.table.item(row, 0).data(Qt.ItemDataRole.UserRole)["id"]
        buttons = page.table.cellWidget(row, 2).findChildren(QPushButton)
        next(button for button in buttons if button.accessibleName() == "查看处方").click()
        assert opened[-1] == expected
    page.close()