/*
 * Copyright (C) by Claudio Cambra <claudio.cambra@nextcloud.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
 * for more details.
 */

#include <QObject>
#include <QTest>
#include <QSignalSpy>

#include "gui/accountstate.h"
#include "gui/folderman.h"
#include "common/utility.h"

#include "endtoendtestutils.h"

class E2eFileTransferTest : public QObject
{
    Q_OBJECT

public:
    E2eFileTransferTest() = default;

private:
    EndToEndTestHelper _helper;
    OCC::Folder *_testFolder;

private slots:
    void initTestCase()
    {
        QSignalSpy accountReady(&_helper, &EndToEndTestHelper::accountReady);
        _helper.startAccountConfig();
        QVERIFY(accountReady.wait(3000));

        const auto accountState = _helper.accountState();
        QSignalSpy accountConnected(accountState.data(), &OCC::AccountState::isConnectedChanged);
        QVERIFY(accountConnected.wait(30000));

        _testFolder = _helper.configureSyncFolder();
        QVERIFY(_testFolder);
    }

    void testSyncFolder()
    {
        // Try the down-sync first
        QSignalSpy folderSyncFinished(_testFolder, &OCC::Folder::syncFinished);
        OCC::FolderMan::instance()->forceSyncForFolder(_testFolder);
        QVERIFY(folderSyncFinished.wait(3000));

        const auto testFolderPath = _testFolder->path();
        const QString expectedFilePath(testFolderPath + QStringLiteral("welcome.txt"));
        const QFile expectedFile(expectedFilePath);
        qDebug() << "Checking if expected file exists at:" << expectedFilePath;
        QVERIFY(expectedFile.exists());

        // Now write a file to test the upload
        const auto fileName = QStringLiteral("test_file.txt");
        const QString localFilePath(_testFolder->path() + fileName);
        QVERIFY(OCC::Utility::writeRandomFile(localFilePath));

        OCC::FolderMan::instance()->forceSyncForFolder(_testFolder);
        QVERIFY(folderSyncFinished.wait(3000));
        qDebug() << "First folder sync complete";

        const auto waitForServerToProcessTime = QTime::currentTime().addSecs(3);
        while (QTime::currentTime() < waitForServerToProcessTime) {
            QCoreApplication::processEvents(QEventLoop::AllEvents, 100);
        }

        // Do a propfind to check for this file
        const QString remoteFilePath(_testFolder->remotePathTrailingSlash() + fileName);
        auto checkFileExistsJob = new OCC::PropfindJob(_helper.account(), remoteFilePath, this);
        QSignalSpy result(checkFileExistsJob, &OCC::PropfindJob::result);

        checkFileExistsJob->setProperties(QList<QByteArray>() << "getlastmodified");
        checkFileExistsJob->start();
        QVERIFY(result.wait(10000));

        // Now try to delete the file and check change is reflected
        QFile createdFile(localFilePath);
        QVERIFY(createdFile.exists());
        createdFile.remove();

        OCC::FolderMan::instance()->forceSyncForFolder(_testFolder);
        QVERIFY(folderSyncFinished.wait(3000));

        while (QTime::currentTime() < waitForServerToProcessTime) {
            QCoreApplication::processEvents(QEventLoop::AllEvents, 100);
        }

        auto checkFileDeletedJob = new OCC::PropfindJob(_helper.account(), remoteFilePath, this);
        QSignalSpy error(checkFileDeletedJob, &OCC::PropfindJob::finishedWithError);

        checkFileDeletedJob->setProperties(QList<QByteArray>() << "getlastmodified");
        checkFileDeletedJob->start();

        QVERIFY(error.wait(10000));
    }
};

QTEST_MAIN(E2eFileTransferTest)
#include "teste2efiletransfer.moc"