// SPDX-License-Identifier: MIT

#include "../pendingselection.h"

#include <QSignalSpy>
#include <QStandardItemModel>
#include <QTest>

class PendingSelectionTest : public QObject
{
    Q_OBJECT

private Q_SLOTS:
    void singleWindowWaitsForRelease()
    {
        QStandardItemModel model(1, 1);
        PendingSelection selection(model);
        QSignalSpy activated(&selection, &PendingSelection::activationRequested);
        QSignalSpy previewed(&selection, &PendingSelection::previewRequested);
        selection.select(model.index(0, 0), true);
        QCOMPARE(previewed.count(), 1);
        QCOMPARE(activated.count(), 0);
        selection.finish();
        QCOMPARE(activated.count(), 1);
    }

    void cancellationAllowsAnotherSelectionBeforeRelease()
    {
        QStandardItemModel model(2, 1);
        PendingSelection selection(model);
        QSignalSpy activated(&selection, &PendingSelection::activationRequested);
        selection.select(model.index(1, 0), true);
        selection.cancel();
        selection.select(model.index(0, 0), true);
        QCOMPARE(activated.count(), 0);
        selection.finish();
        QCOMPARE(activated.count(), 1);
        QCOMPARE(activated.first().first().value<QModelIndex>(), model.index(0, 0));
    }

    void activatesOnlyFinalSelection()
    {
        QStandardItemModel model(3, 1);
        PendingSelection selection(model);
        QSignalSpy activated(&selection, &PendingSelection::activationRequested);
        QSignalSpy previewed(&selection, &PendingSelection::previewRequested);
        QSignalSpy hidden(&selection, &PendingSelection::previewHidden);

        selection.select(model.index(0, 0), true);
        selection.select(model.index(1, 0), true);
        selection.select(model.index(2, 0), true);
        QCOMPARE(previewed.count(), 3);
        QCOMPARE(activated.count(), 0);
        selection.finish();
        QCOMPARE(hidden.count(), 1);
        QCOMPARE(activated.count(), 1);
        QCOMPARE(activated.first().first().value<QModelIndex>(), model.index(2, 0));
        selection.finish();
        QCOMPARE(activated.count(), 1);
    }

    void switchingGroupsAbandonsPreviousSelection()
    {
        QStandardItemModel model;
        for (const auto &name : {"Dolphin", "Firefox"}) {
            auto *group = new QStandardItem(QString::fromLatin1(name));
            group->appendRow(new QStandardItem(QStringLiteral("first")));
            group->appendRow(new QStandardItem(QStringLiteral("second")));
            model.appendRow(group);
        }
        PendingSelection selection(model);
        QSignalSpy activated(&selection, &PendingSelection::activationRequested);
        selection.select(model.index(1, 0, model.index(0, 0)), true);
        const QModelIndex firefox = model.index(0, 0, model.index(1, 0));
        selection.select(firefox, true);
        QCOMPARE(activated.count(), 0);
        selection.finish();
        QCOMPARE(activated.count(), 1);
        QCOMPARE(activated.first().first().value<QModelIndex>(), firefox);
    }

    void immediateActionReplacesPreview()
    {
        QStandardItemModel model(2, 1);
        PendingSelection selection(model);
        QSignalSpy activated(&selection, &PendingSelection::activationRequested);
        selection.select(model.index(0, 0), true);
        selection.select(model.index(1, 0), false);
        QCOMPARE(activated.count(), 1);
        QCOMPARE(activated.first().first().value<QModelIndex>(), model.index(1, 0));
        selection.finish();
        QCOMPARE(activated.count(), 1);
    }

    void cancellationDoesNotActivate()
    {
        QStandardItemModel model(1, 1);
        PendingSelection selection(model);
        QSignalSpy activated(&selection, &PendingSelection::activationRequested);
        selection.select(model.index(0, 0), true);
        selection.cancel();
        selection.finish();
        selection.select(model.index(0, 0), true);
        selection.select({}, true);
        selection.finish();
        QCOMPARE(activated.count(), 0);
    }

    void selectedWindowClosingCancels()
    {
        QStandardItemModel model(2, 1);
        PendingSelection selection(model);
        QSignalSpy activated(&selection, &PendingSelection::activationRequested);
        QSignalSpy hidden(&selection, &PendingSelection::previewHidden);
        selection.select(model.index(0, 0), true);
        model.removeRow(0);
        QVERIFY(!hidden.isEmpty());
        selection.finish();
        QCOMPARE(activated.count(), 0);
    }

    void rowChangeKeepsSelectedWindow()
    {
        QStandardItemModel model(3, 1);
        model.setData(model.index(2, 0), QStringLiteral("selected"));
        PendingSelection selection(model);
        QSignalSpy activated(&selection, &PendingSelection::activationRequested);
        selection.select(model.index(2, 0), true);
        model.removeRow(0);
        selection.finish();
        QCOMPARE(activated.count(), 1);
        QCOMPARE(activated.first().first().value<QModelIndex>().data().toString(), QStringLiteral("selected"));
    }

    void modelResetCancels()
    {
        QStandardItemModel model(1, 1);
        PendingSelection selection(model);
        QSignalSpy activated(&selection, &PendingSelection::activationRequested);
        selection.select(model.index(0, 0), true);
        model.clear();
        model.setRowCount(1);
        selection.finish();
        QCOMPARE(activated.count(), 0);
    }
};

QTEST_GUILESS_MAIN(PendingSelectionTest)
#include "test-pendingselection.moc"