/*
    This file is part of the KDE project
    SPDX-FileCopyrightText: 2014 David Faure <faure@kde.org>

    SPDX-License-Identifier: LGPL-2.0-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
*/

#include <QMenu>
#include <QSignalSpy>
#include <QTemporaryDir>
#include <QTest>

#include "jobuidelegatefactory.h"
#include "kiotesthelper.h"
#include <KConfigGroup>
#include <KFileCopyToMenu>
#include <KSharedConfig>

#include <KIO/CopyJob>

class KFileCopyToMenuTest : public QObject
{
    Q_OBJECT

private Q_SLOTS:
    void initTestCase()
    {
        QStandardPaths::setTestModeEnabled(true);
        qputenv("KIOWORKER_ENABLE_TESTMODE", "1"); // ensure the KIO workers call QStandardPaths::setTestModeEnabled too

        QVERIFY(m_tempDir.isValid());
        QVERIFY(m_tempDestDir.isValid());
        QVERIFY(m_nonWritableTempDir.isValid());
        QVERIFY(QFile(m_nonWritableTempDir.path()).setPermissions(QFile::ReadOwner | QFile::ReadUser | QFile::ExeOwner | QFile::ExeUser));
        m_srcDir = m_tempDir.path();
        m_destDir = m_tempDestDir.path();

        m_srcFile = m_srcDir + QStringLiteral("/srcfile");

        KIO::setDefaultJobUiDelegateFactory(nullptr); // no "skip" dialogs

        // Set a recent dir
        KConfigGroup recentDirsGroup(KSharedConfig::openConfig(), QStringLiteral("kuick-copy"));
        m_recentDirs << m_destDir + QStringLiteral("/nonexistentsubdir") // will be action number count-3
                     << m_nonWritableTempDir.path() // will be action number count-2
                     << m_destDir; // will be action number count-1
        recentDirsGroup.writeEntry("Paths", m_recentDirs);

        m_lastActionCount = 0;
    }

    void cleanupTestCase()
    {
        QVERIFY(QFile(m_nonWritableTempDir.path())
                    .setPermissions(QFile::ReadOwner | QFile::ReadUser | QFile::WriteOwner | QFile::WriteUser | QFile::ExeOwner | QFile::ExeUser));
    }

    // Before every test method, ensure the test file m_srcFile exists
    void init()
    {
        if (QFile::exists(m_srcFile)) {
            QVERIFY(QFileInfo(m_srcFile).isWritable());
        } else {
            QFile srcFile(m_srcFile);
            QVERIFY2(srcFile.open(QFile::WriteOnly), qPrintable(srcFile.errorString()));
            srcFile.write("Hello world\n");
        }
        QVERIFY(QFileInfo(m_srcFile).isWritable());
    }

    void shouldHaveParentWidget()
    {
        KFileCopyToMenu generator(&m_parentWidget);
        QCOMPARE(generator.parent(), &m_parentWidget);
    }

    void shouldAddActions()
    {
        KFileCopyToMenu generator(&m_parentWidget);
        QMenu menu;
        generator.addActionsTo(&menu);
        QList<QUrl> urls;
        urls << QUrl::fromLocalFile(m_srcFile);
        generator.setUrls(urls);
        QCOMPARE(extractActionNames(menu), QStringList() << QStringLiteral("copyTo_submenu") << QStringLiteral("moveTo_submenu"));
        QAction *copyMenuAction = menu.actions().at(0);

        // When
        menu.setActiveAction(copyMenuAction);
        menu.popup(QPoint(-100, -100));

        // Then
        const QStringList actionNames = extractActionNames(*copyMenuAction->menu());
        QVERIFY(!actionNames.isEmpty());
        QCOMPARE(actionNames.first(), QStringLiteral("home"));
        QVERIFY(actionNames.contains(QLatin1String("browse")));
        QCOMPARE(actionNames.at(actionNames.count() - 2), m_nonWritableTempDir.path());
        QCOMPARE(actionNames.last(), m_destDir);
    }

    void shouldTryCopyingToRecentPath_data()
    {
        QTest::addColumn<int>("actionNumber"); // from the bottom of the menu, starting at 1; see the recentDirs list in initTestCase
        QTest::addColumn<int>("expectedErrorCode");

        QTest::newRow("working") << 1 << 0; // no error
        QTest::newRow("non_writable") << 2 << int(KIO::ERR_WRITE_ACCESS_DENIED);
        QTest::newRow("non_existing") << 3 << int(KIO::ERR_CANNOT_OPEN_FOR_WRITING);
    }

    void shouldTryCopyingToRecentPath()
    {
        QFETCH(int, actionNumber);
        QFETCH(int, expectedErrorCode);

        KFileCopyToMenu generator(&m_parentWidget);
        QMenu menu;
        QList<QUrl> urls;
        urls << QUrl::fromLocalFile(m_srcFile);
        generator.setUrls(urls);
        generator.addActionsTo(&menu);
        QAction *copyMenuAction = menu.actions().at(0);
        menu.setActiveAction(copyMenuAction);

        menu.popup(QPoint(-100, -100));
        const QList<QAction *> actions = copyMenuAction->menu()->actions();
        if (m_lastActionCount == 0) {
            m_lastActionCount = actions.count();
        } else {
            QCOMPARE(actions.count(), m_lastActionCount); // should be stable, i.e. selecting a recent dir shouldn't duplicate it
        }
        QAction *copyAction = actions.at(actions.count() - actionNumber);
        QSignalSpy spy(&generator, &KFileCopyToMenu::error);

        // When
        copyAction->trigger();

        // Then
        QTRY_COMPARE(spy.count(), expectedErrorCode ? 1 : 0);
        if (expectedErrorCode) {
            QCOMPARE(spy.at(0).at(0).toInt(), expectedErrorCode);
        } else {
            QTRY_VERIFY(QFile::exists(m_destDir + QStringLiteral("/srcfile")));
        }

        if (actionNumber == 1) { // This part only makes sense if the copy is going to work
            QFile::remove(m_destDir + QStringLiteral("/srcfile"));
            // Remove the recent dirs entry for m_destDir from the config
            KConfigGroup group(KSharedConfig::openConfig(), QStringLiteral("kuick-copy"));
            auto list = group.readEntry("Paths", QStringList{});
            list.removeOne(m_destDir);
            group.writeEntry("Paths", list);
            group.sync();
            // Triggering the action again, should insert a recent dirs corresponding
            // to m_destDir, which calls KFileCopyToMainMenu::copyOrMoveTo(), which
            // trims the recent dirs config to 10 urls, and _shouldn't_ crash
            copyAction->trigger();

            // Back to normal for the next tests to pass
            group.writeEntry("Paths", m_recentDirs);
        }
    }

private:
    static QStringList extractActionNames(const QMenu &menu)
    {
        QStringList ret;
        const QList<QAction *> actionsList = menu.actions();
        for (const QAction *action : actionsList) {
            ret.append(action->objectName());
        }
        return ret;
    }

    QTemporaryDir m_tempDir;
    QString m_srcDir;
    QString m_srcFile;
    QTemporaryDir m_tempDestDir;
    QString m_destDir;
    QTemporaryDir m_nonWritableTempDir;
    QWidget m_parentWidget;
    QStringList m_recentDirs;
    int m_lastActionCount;
};

QTEST_MAIN(KFileCopyToMenuTest)

#include "kfilecopytomenutest.moc"