/*
 *
 * Copyright (C) 2023, KylinSoft Co., Ltd.
 *
 * 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 3 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 */
#include "app-db-manager.h"
#include "file-utils.h"
#include "convert-winid-to-desktop.h"

#include <qt5xdg/XdgDesktopFile>
#include <QMutexLocker>
#include <QCryptographicHash>
#include <QFile>

#define GENERAL_APP_DESKTOP_PATH "/usr/share/applications"
#define ANDROID_APP_DESKTOP_PATH QDir::homePath() + "/.local/share/applications"
#define SNAPD_APP_DESKTOP_PATH "/var/lib/snapd/desktop/applications"
#define AUTOSTART_APP_DESKTOP_PATH "/etc/xdg/autostart"

#define LAST_LOCALE_NAME QDir::homePath() + "/.config/org.ukui/ukui-search/appdata/last-locale-name.conf"
#define LOCALE_NAME_VALUE "CurrentLocaleName"
#define APP_DATABASE_VERSION_CONFIG QDir::homePath() + "/.config/org.ukui/ukui-search/appdata/app-database-version.conf"
#define APP_DATABASE_VERSION_VALUE "AppDatabaseVersion"
using namespace UkuiSearch;

static AppDBManager *global_instance;
QMutex AppDBManager::s_mutex;

AppDBManager *AppDBManager::getInstance()
{
    if (!global_instance) {
        global_instance = new AppDBManager();
    }
    return global_instance;
}

AppDBManager::AppDBManager(QObject *parent) : QThread(parent), m_database(QSqlDatabase())
{
    //链接数据库
    if (openDataBase()) {
        //建数据库
        buildAppInfoDB();

        //监听系统语言变化
        m_lastLocaleNameQsettings = new QSettings(LAST_LOCALE_NAME, QSettings::IniFormat);
        m_localeChanged = false;
        m_lastLocaleNameQsettings->beginGroup(LOCALE_NAME_VALUE);
        QString lastLocale = m_lastLocaleNameQsettings->value(LOCALE_NAME_VALUE).toString();
        if (QLocale::system().name().compare(lastLocale)) {
            qDebug() << "I'm going to update the locale name in conf file.";
            if (!lastLocale.isEmpty()) {
                m_localeChanged = true;
            }
            m_lastLocaleNameQsettings->setValue(LOCALE_NAME_VALUE, QLocale::system().name());
        }
        m_lastLocaleNameQsettings->endGroup();

        //检查数据库版本
        m_dbVersionQsettings = new QSettings(APP_DATABASE_VERSION_CONFIG, QSettings::IniFormat);
        m_dbVersionQsettings->beginGroup(APP_DATABASE_VERSION_VALUE);
        QString dbVersion = m_dbVersionQsettings->value(APP_DATABASE_VERSION_VALUE).toString();
        if (dbVersion.isEmpty()) {
            m_dbVersionNeedUpdate = true;
        } else if (dbVersion != APP_DATABASE_VERSION) {
            if (dbVersion.toDouble() < APP_DATABASE_VERSION.toDouble()) {
                m_dbVersionNeedUpdate = true;
            } else {
                qDebug() << "app db version old version:" << dbVersion.toDouble() << "new version:" << APP_DATABASE_VERSION.toDouble();
            }
        }
        m_dbVersionQsettings->endGroup();

        if (m_dbVersionNeedUpdate) {
            qDebug() << "app db version need update! old version:" << dbVersion.toDouble() << "new version:" << APP_DATABASE_VERSION.toDouble();
        }

        //版本号改变更新数据库字段
        if (m_dbVersionNeedUpdate) {
            for (auto iter = m_namesOfAppinfoTable.constBegin(); iter!= m_namesOfAppinfoTable.constEnd(); iter++) {
                this->addItem2BackIfNotExist(iter.key(), iter.value());
            }
        }

        //刷新应用数据
        QStringList appPaths;
        appPaths << GENERAL_APP_DESKTOP_PATH << ANDROID_APP_DESKTOP_PATH
                 << SNAPD_APP_DESKTOP_PATH << AUTOSTART_APP_DESKTOP_PATH;
        refreshAllData2DB(appPaths, m_dbVersionNeedUpdate);

        if (m_dbVersionNeedUpdate) {
            m_dbVersionQsettings->beginGroup(APP_DATABASE_VERSION_VALUE);
            m_dbVersionQsettings->setValue(APP_DATABASE_VERSION_VALUE, APP_DATABASE_VERSION);
            m_dbVersionQsettings->endGroup();
            m_dbVersionNeedUpdate = false;
        }

        //初始化FileSystemWatcher
        initFileSystemWatcher();

        /*
        //初始化FileSystemWatcher
        m_watchAppDir = new QFileSystemWatcher(this);
        m_watchAppDir->addPath(GENERAL_APP_DESKTOP_PATH);
        QDir androidPath(ANDROID_APP_DESKTOP_PATH);
        if(!androidPath.exists()) {
            androidPath.mkpath(ANDROID_APP_DESKTOP_PATH);
        }
        m_watchAppDir->addPath(ANDROID_APP_DESKTOP_PATH);

        QDir snapdPath(SNAPD_APP_DESKTOP_PATH);
        if(!snapdPath.exists()) {
            snapdPath.mkpath(SNAPD_APP_DESKTOP_PATH);
        }
        m_watchAppDir->addPath(SNAPD_APP_DESKTOP_PATH);

        //初始化timer
        this->start();
        m_timer = new QTimer();
        m_maxProcessTimer = new QTimer();

        m_timer->setInterval(2*1000);
        m_maxProcessTimer->setInterval(5*1000);

        m_timer->setSingleShot(true);
        m_maxProcessTimer->setSingleShot(true);

        m_timer->moveToThread(this);
        m_maxProcessTimer->moveToThread(this);

        connect(this, SIGNAL(startTimer()), m_timer, SLOT(start()));
        connect(this, SIGNAL(maxProcessTimerStart()), m_maxProcessTimer, SLOT(start()));
        connect(this, &AppDBManager::stopTimer, m_timer, &QTimer::stop);
        connect(this, &AppDBManager::stopTimer, m_maxProcessTimer, &QTimer::stop);

        //监听desktop文件所在目录，由于directoryChange会发多次信号，使用计时器阻塞
        connect(m_watchAppDir, &QFileSystemWatcher::directoryChanged, this, [ = ](const QString & path) {
            qDebug() << "m_watchAppDir directoryChanged:" << path;
            Q_EMIT this->startTimer();
            if (!m_maxProcessTimer->isActive()) {
                Q_EMIT this->maxProcessTimerStart();
            }
        });

        //计时器超时统一进行更新操作
        connect(m_timer, &QTimer::timeout, this, [ & ] {
            qDebug() << "Time out! Now I can update the database!";
            Q_EMIT this->stopTimer();
            this->refreshAllData2DB();
        }, Qt::DirectConnection);
        connect(m_maxProcessTimer, &QTimer::timeout, this, [ & ] {
            qDebug() << "I've waited too lang, I have to update  the database now!";
            Q_EMIT this->stopTimer();
            this->refreshAllData2DB();
        }, Qt::DirectConnection);
        */

        //监控应用进程开启
        connect(KWindowSystem::self(), &KWindowSystem::windowAdded, [ = ](WId id) {
            KWindowInfo info = KWindowSystem::windowInfo(id, 0, NET::WM2AllProperties);
            if (info.valid()) {
                QString desktopfp;
                desktopfp = this->tranPidToDesktopFp(info.pid());
                if (!desktopfp.isEmpty()) {
                    this->updateLaunchTimes(desktopfp);
                }
            }
        });
    } else {
        qDebug() << "App-db-manager does nothing.";
    }
}

AppDBManager::~AppDBManager()
{
    if (m_watcher) {
        delete m_watcher;
    }
    m_watcher = NULL;

    if (m_snapdWatcher) {
        delete m_snapdWatcher;
    }
    m_snapdWatcher = NULL;

//    if(m_watchAppDir) {
//        delete m_watchAppDir;
//    }
//    m_watchAppDir = NULL;
    closeDataBase();
}

void AppDBManager::buildAppInfoDB()
{
    qDebug() << "I'm going to build app info database.";
    QSqlQuery sql(m_database);
    QString cmd = QString("CREATE TABLE IF NOT EXISTS appInfo(%1, %2, %3, %4, %5, %6, %7, %8,%9, %10, %11, %12, %13, %14, %15, %16, %17, %18, %19, %20, %21)")
//                         .arg("ID INT")//自增id
                         .arg("DESKTOP_FILE_PATH TEXT PRIMARY KEY NOT NULL")//desktop文件路径
                         .arg("MODIFYED_TIME TEXT")//YYYYMMDDHHmmSS 修改日期
                         .arg("INSERT_TIME TEXT")//YYYYMMDDHHmmSS 插入日期
                         .arg("LOCAL_NAME TEXT")//本地名称，跟随系统语言
                         .arg("NAME_EN TEXT")//应用英文名称
                         .arg("NAME_ZH TEXT")//应用中文名称
                         .arg("PINYIN_NAME TEXT")//中文拼音
                         .arg("FIRST_LETTER_OF_PINYIN TEXT")//中文拼音首字母
                         .arg("FIRST_LETTER_ALL TEXT")//拼音和英文全拼
                         .arg("ICON TEXT")//图标名称（或路径）
                         .arg("TYPE TEXT")//应用类型
                         .arg("CATEGORY TEXT")//应用分类
                         .arg("EXEC TEXT")//应用命令
                         .arg("COMMENT TEXT")//应用注释
                         .arg("MD5 TEXT")//desktop文件内容md5值
                         .arg("LAUNCH_TIMES INT")//应用打开次数, 等比例缩减
                         .arg("FAVORITES INT")//收藏顺序0:为收藏，>0的数字表示收藏顺序
                         .arg("LAUNCHED INT")//应用安装后是否打开过0:未打开过;1:打开过
                         .arg("TOP INT")//置顶顺序 0:未置顶；>0的数字表示置顶顺序
                         .arg("LOCK INT")//应用是否锁定（管控），0未锁定，1锁定
                         .arg("DONT_DISPLAY INT");//应用隐藏(NoDisplay, NotShowIn或位于autostart)
    if (!sql.exec(cmd)) {
        qWarning() << m_database.lastError() << cmd;
        return;
    }
}

void AppDBManager::initFileSystemWatcher()
{
    m_watcher = new FileSystemWatcher;
    m_watcher->addWatch(GENERAL_APP_DESKTOP_PATH);
    QDir androidDir(ANDROID_APP_DESKTOP_PATH);
    if(!androidDir.exists()) {
        androidDir.mkpath(ANDROID_APP_DESKTOP_PATH);
    }
    m_watcher->addWatch(ANDROID_APP_DESKTOP_PATH);

    m_snapdDir = new QDir(SNAPD_APP_DESKTOP_PATH);
    if(!m_snapdDir->exists()) {
        m_snapdWatcher = new FileSystemWatcher(false);
        QDir dir("/var/lib/snapd");
        if (!dir.exists()) {
            dir.setPath("/var/lib");
        }
        m_snapdPath = dir.absolutePath();
        m_snapdWatcher->addWatch(m_snapdPath);
    } else {
        m_watcher->addWatch(SNAPD_APP_DESKTOP_PATH);
    }

    m_watcher->addWatch(AUTOSTART_APP_DESKTOP_PATH);

    connect(m_snapdWatcher, &FileSystemWatcher::created, this, [ = ] (const QString &path, bool isDir) {
        if (isDir) {
            //监测新增目录为/var/lib/snapd时，将其替换为snapdWatcher的watchpath
            if (path == "/var/lib/snapd") {
                m_snapdWatcher->removeWatch(m_snapdPath);
                m_snapdWatcher->addWatch(path);
                qDebug() << "~~~~~~~add watch" << path << "~~~~~remove watch" << m_snapdPath;
                m_snapdPath = path;
                //snapd下的desktop目录可能在还没替换监听目录为/var/lib/snapd时就已经被创建，因此需要特别判断
                QDir dir("/var/lib/snapd/desktop");
                if (dir.exists()) {
                    if (m_snapdDir->exists()) {
                        m_watcher->addWatch(SNAPD_APP_DESKTOP_PATH);
                        m_snapdWatcher->removeWatch(m_snapdPath);
                        qDebug() << "======add watch" << SNAPD_APP_DESKTOP_PATH << "======remove watch" << m_snapdPath;
                    }
                }
            }
            //检测到/var/lib/snapd/desktop被创建，则将监听目录替换为/var/lib/snapd/desktop/applications
            if (path == "/var/lib/snapd/desktop" and m_snapdDir->exists()) {
                m_watcher->addWatch(SNAPD_APP_DESKTOP_PATH);
                m_snapdWatcher->removeWatch(m_snapdPath);
                qDebug() << "======add watch" << SNAPD_APP_DESKTOP_PATH << "======remove watch" << m_snapdPath;
            }

        }
    });

    connect(m_watcher, &FileSystemWatcher::created, this, [ = ] (const QString &desktopfp, bool isDir) {
        //event is IN_CREATE
        if (!isDir and desktopfp.endsWith(".desktop")) {
            this->insertDBItem(desktopfp);
        }
    });

    connect(m_watcher, &FileSystemWatcher::moveTo, this, [ = ] (const QString &desktopfp, bool isDir) {
        //event is IN_MOVED_TO
        if (!isDir and desktopfp.endsWith(".desktop")) {
            QStringList appPaths(desktopfp.left(desktopfp.lastIndexOf("/")));
            this->refreshAllData2DB(appPaths);
        }
    });

    connect(m_watcher, &FileSystemWatcher::modified, this, [ = ] (const QString &desktopfp) {
        //event is IN_MODIFY
        if (desktopfp.endsWith(".desktop")) {
            this->updateDBItem(desktopfp);
        }
    });

    connect(m_watcher, &FileSystemWatcher::moved, this, [ = ] (const QString &desktopfp, bool isDir) {
        //event is IN_MOVED_FROM
        if (!isDir) {
            if (desktopfp.endsWith(".desktop")) {
                this->deleteDBItem(desktopfp);
            }
        } else {
            //event is IN_MOVE_SELF
            qWarning() << "Dir:" << desktopfp << "has been moved to other place! Stop the watching of the desktop files in it!";
        }
    });

    connect(m_watcher, &FileSystemWatcher::deleted, this, [ = ] (const QString &desktopfp, bool isDir) {
        //event is IN_DELETE
        if (!isDir) {
            if (desktopfp.endsWith(".desktop")) {
                this->deleteDBItem(desktopfp);
            }
        } else {
            //event is IN_DELETE_SELF
            qWarning() << "Dir:" << desktopfp << "has been deleted! Stop the watching of the desktop files in it!";
        }
    });
}

void AppDBManager::loadDesktopFilePaths(QString path, QFileInfoList &infolist)
{
    QDir dir(path);
    dir.setSorting(QDir::DirsFirst);
    dir.setFilter(QDir::Dirs | QDir::Files | QDir::NoDotAndDotDot);
    infolist.append(dir.entryInfoList());
}

bool AppDBManager::addItem2BackIfNotExist(QString itemName, QString itemDataType, QVariant defult)
{
    bool res(true);
    QSqlQuery sql(m_database);
    sql.setForwardOnly(true);
    QString cmd = QString("SELECT * FROM sqlite_master WHERE name = 'appInfo' AND sql like '%%1%' ").arg(itemName);
    if (!sql.exec(cmd)) {
        qWarning() << m_database.lastError() << cmd;
        res = false;
        return res;
    }
    if (sql.next()) {
        qDebug() << itemName << "is exist!";
        return res;
    }

    cmd = QString("ALTER TABLE appInfo ADD '%0' %1 ").arg(itemName)
                                                     .arg(itemDataType);
    if (defult != QVariant()) {
        //TODO 根据数据类型将初始值转化为对应格式数据
        if (itemDataType == "INT(4)") {
            cmd += QString("DEFAULT %1").arg(defult.toInt());
        } else if (itemDataType == "TEXT") {
            cmd += QString("DEFAULT %1").arg(QString(defult.toByteArray()));
        }
    }
    if (!sql.exec(cmd)) {
        qWarning() << m_database.lastError() << cmd;
        res = false;
    } else {
        qDebug() << "Add item" << itemName << "successful.";
    }
    if (!res) {
        qDebug() << "Fail to addItem2Back :" << itemName;
    }
    return res;
}

void AppDBManager::refreshAllData2DB(const QStringList &appPaths, bool dbVersionNeedUpdate)
{
    PendingAppInfo items;
    items.setHandleType(PendingAppInfo::RefreshDataBase);
    items.setPathsNeedRefreshData(appPaths);
    items.setDBUpdate(dbVersionNeedUpdate);
    PendingAppInfoQueue::getAppInfoQueue().enqueue(items);
}

bool AppDBManager::handleLocaleDataUpdate(const QString &desktopFilePath)
{
    bool res(true);
    XdgDesktopFile desktopFile;
    desktopFile.load(desktopFilePath);
    QString localName = desktopFile.localizedValue("Name", "NULL").toString();
    QString firstLetter2All = localName;

    if (localName.contains(QRegExp("[\\x4e00-\\x9fa5]+"))) {
        firstLetter2All = FileUtils::findMultiToneWords(localName).at(0);
    }


    QSqlQuery query(m_database);
    query.prepare("UPDATE appInfo SET LOCAL_NAME=:localName, FIRST_LETTER_ALL=:firstOfLetter2All WHERE DESKTOP_FILE_PATH=:desktopFilePath");
    query.bindValue(":localName", localName);
    query.bindValue(":firstOfLetter2All", firstLetter2All);
    query.bindValue(":desktopFilePath", desktopFilePath);

    if (!this->startTransaction()) {
        return false;
    }

    if (query.exec()) {
        if (this->startCommit()) {
            ApplicationInfoMap appInfo;
            appInfo[desktopFilePath].insert(ApplicationProperty::LocalName, QVariant(localName));
            appInfo[desktopFilePath].insert(ApplicationProperty::FirstLetterAll, QVariant(firstLetter2All));
            Q_EMIT this->appDBItemUpdate(appInfo);
            qDebug() << "Update the locale data of " << desktopFilePath;
        } else {
            res = false;
        }
    } else {
        qDebug() << "Fail to update the locale data of " << desktopFilePath;
        qWarning() << query.lastError() << query.lastQuery();
        m_database.rollback();
        res = false;
    }
    return res;
}

void AppDBManager::run()
{
    exec();
}

void AppDBManager::refreshDataBase()
{
//    if (m_database.transaction()) {
//        this->updateAllData2DB();
//        if (!m_database.commit()) {
//            qWarning() << "Failed to commit !";
//            m_database.rollback();
//        } else if (!m_dbChanged) {
//            qDebug() << "app DataBase has no changes!";
//        } else {
//            Q_EMIT this->finishHandleAppDB();
//        }
//    } else {
//        qWarning() << "Failed to start transaction mode!!!";
//    }
}

bool AppDBManager::openDataBase()
{
    bool res(true);

    QDir dir;
    if (!dir.exists(APP_DATABASE_PATH)) {
        dir.mkpath(APP_DATABASE_PATH);
    }
    if (QSqlDatabase::contains(CONNECTION_NAME)) {
        m_database = QSqlDatabase::database(CONNECTION_NAME);
    } else {
        m_database = QSqlDatabase::addDatabase("QSQLITE", CONNECTION_NAME);
        m_database.setDatabaseName(APP_DATABASE_PATH + APP_DATABASE_NAME);
    }
    if(!m_database.open()) {
        qWarning() << "Fail to open AppDataBase, because" << m_database.lastError();
        res = false;
    }
    return res;
}

void AppDBManager::closeDataBase()
{
    m_database.close();
//    delete m_database;
    QSqlDatabase::removeDatabase(CONNECTION_NAME);
}

QString AppDBManager::getAppDesktopMd5(const QString &desktopfd)
{
    QString res;
    QFile file(desktopfd);
    file.open(QIODevice::ReadOnly);
    res = QString::fromStdString(QCryptographicHash::hash(file.readAll(), QCryptographicHash::Md5).toHex().toStdString());
    file.close();
    return res;
}

bool AppDBManager::startTransaction()
{
    if (m_database.transaction()) {
        return true;
    } else {
        qWarning() << "Failed to start transaction mode!!!" << m_database.lastError();
        return false;
    }
}

bool AppDBManager::startCommit()
{
    if (!m_database.commit()) {
        qWarning() << "Failed to commit !" << m_database.lastError();
        m_database.rollback();
        return false;
    } else {
        return true;
    }
}

bool AppDBManager::handleDBItemInsert(const QString &desktopFilePath)
{
    bool res(true);
    QSqlQuery sql(m_database);
    XdgDesktopFile desktopfile;
    desktopfile.load(desktopFilePath);
    QString hanzi, pinyin, firstLetterOfPinyin;
    QString localName = desktopfile.localizedValue("Name", "NULL").toString();
    QString firstLetter2All = localName;
    bool isHanzi = true;

    if (localName.contains(QRegExp("[\\x4e00-\\x9fa5]+"))) {
        firstLetter2All = FileUtils::findMultiToneWords(localName).at(0);
    }

    if (desktopfile.contains("Name[zh_CN]")) {
        hanzi = desktopfile.value("Name[zh_CN]").toString();
    } else {
        hanzi = desktopfile.value("Name").toString();
        if (!hanzi.contains(QRegExp("[\\x4e00-\\x9fa5]+"))) {
            isHanzi = false;
        }
    }

    if (isHanzi) {
        QStringList pinyinList = FileUtils::findMultiToneWords(hanzi);
        for (int i = 0; i<pinyinList.size(); ++i) {
            if (i % 2) {
                firstLetterOfPinyin += pinyinList.at(i);
            } else {
                pinyin += pinyinList.at(i);
            }
        }
    }

    int dontDisplay = 0;
    if (desktopfile.value("NoDisplay").toString().contains("true") ||
            desktopfile.value("NotShowIn").toString().contains("UKUI") ||
            desktopFilePath.startsWith(AUTOSTART_APP_DESKTOP_PATH)) {
        dontDisplay = 1;
    }

    sql.prepare(QString("INSERT INTO appInfo "
                        "(DESKTOP_FILE_PATH, MODIFYED_TIME, INSERT_TIME, "
                        "LOCAL_NAME, NAME_EN, NAME_ZH, PINYIN_NAME, "
                        "FIRST_LETTER_OF_PINYIN, FIRST_LETTER_ALL, "
                        "ICON, TYPE, CATEGORY, EXEC, COMMENT, MD5, "
                        "LAUNCH_TIMES, FAVORITES, LAUNCHED, TOP, LOCK, DONT_DISPLAY) "
                        "VALUES(:desktopFilePath, '%0', '%1', :localName, :enName, :zhName, :pinyinName, :firstLetterOfPinyin, :firstLetter2All, "
                        ":icon, :type, :categories, :exec, :comment,'%2',%3,%4,%5,%6,%7,%8)")
                .arg(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"))
                .arg(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"))
                .arg(getAppDesktopMd5(desktopFilePath))
                .arg(0)
                .arg(0)
                .arg(0)
                .arg(0)
                .arg(0)
                .arg(dontDisplay));
    sql.bindValue(":desktopFilePath", desktopFilePath);
    sql.bindValue(":localName", localName);
    sql.bindValue(":enName", desktopfile.value("Name").toString());
    sql.bindValue(":zhName", hanzi);
    sql.bindValue(":pinyinName", pinyin);
    sql.bindValue(":firstLetterOfPinyin", firstLetterOfPinyin);
    sql.bindValue(":firstLetter2All", firstLetter2All);
    sql.bindValue(":icon", desktopfile.value("Icon").toString());
    sql.bindValue(":type", desktopfile.value("Type").toString());
    sql.bindValue(":categories", desktopfile.value("Categories").toString());
    sql.bindValue(":exec", desktopfile.value("Exec").toString());
    sql.bindValue(":comment", desktopfile.value("Comment").toString());

    if (!this->startTransaction()) {
        return false;
    }

    if (sql.exec()) {
        if (this->startCommit()) {
            Q_EMIT this->appDBItemAdd(desktopFilePath);
            qDebug() << "app database add " << desktopFilePath << "success!";
        } else {
            res = false;
        }
    } else {
        qDebug() << "app database add " << desktopFilePath << "failed!";
        qWarning() << m_database.lastError() << sql.lastQuery();
        m_database.rollback();
        res = false;
    }
    return res;
}

bool AppDBManager::handleDBItemDelete(const QString &desktopFilePath)
{
    if (!this->startTransaction()) {
        return false;
    }

    bool res(true);
    QSqlQuery query(m_database);
    query.setForwardOnly(true);
    QString cmd = "SELECT FAVORITES, TOP FROM APPINFO WHERE DESKTOP_FILE_PATH=:desktopFilePath";
    query.prepare(cmd);
    query.bindValue(":desktopFilePath", desktopFilePath);

    //查询要删除信息的应用是否被收藏或顶置过
    if (!query.exec()) {
        res = false;
        qWarning() << m_database.lastError() << query.lastQuery();
    } else if (query.next()) {
        int favorites = query.value("FAVORITES").toInt();
        int top = query.value("TOP").toInt();
        if (favorites) {
            query.prepare(QString("UPDATE appInfo SET FAVORITES = FAVORITES -1 WHERE FAVORITES > %1").arg(favorites));
            if (query.exec()) {
                cmd = QString("SELECT DESKTOP_FILE_PATH,FAVORITES FROM APPINFO WHERE FAVORITES >= %1").arg(favorites);
                if (query.exec(cmd)) {
                    ApplicationInfoMap infos;
                    while (query.next()) {
                        if (query.value("DESKTOP_FILE_PATH").toString() == desktopFilePath) {
                            continue;
                        }
                        infos[query.value("DESKTOP_FILE_PATH").toString()].insert(ApplicationProperty::Favorites, query.value("FAVORITES"));
                    }
                    if (!infos.isEmpty()) {
                        Q_EMIT this->appDBItemUpdate(infos);
                    }
                } else {
                    qWarning() << query.lastError() << query.lastQuery();
                }
            } else {
                res = false;
                qWarning() << "I'm going to delete item in db, fail to update the FAVORITES because:" <<  query.lastError() << cmd;
            }
        }
        if (top) {
            query.prepare(QString("UPDATE appInfo SET TOP = TOP -1 WHERE TOP > %1").arg(top));
            if (query.exec()) {
                cmd = QString("SELECT DESKTOP_FILE_PATH,TOP FROM APPINFO WHERE TOP >= %1").arg(top);
                if (query.exec(cmd)) {
                    ApplicationInfoMap infos;
                    while (query.next()) {
                        if (query.value("DESKTOP_FILE_PATH").toString() == desktopFilePath) {
                            continue;
                        }
                        infos[query.value("DESKTOP_FILE_PATH").toString()].insert(ApplicationProperty::Top, query.value("TOP"));
                    }
                    if (!infos.isEmpty()) {
                        Q_EMIT this->appDBItemUpdate(infos);
                    }
                } else {
                    qWarning() << query.lastError() << query.lastQuery();
                }
            } else {
                res = false;
                qWarning() << "I'm going to delete item in db, fail to update the TOP because:" << query.lastError() << cmd;
            }
        }
    } else {
        qWarning() << "Fail to exec next, because" << query.lastError() << "while executing " << query.lastQuery();
    }

    if (!res) {
        m_database.rollback();
        return res;
    }

    //执行删除操作
    cmd = "DELETE FROM APPINFO WHERE DESKTOP_FILE_PATH=:desktopFilePath";
    query.prepare(cmd);
    query.bindValue(":desktopFilePath", desktopFilePath);
    if (query.exec()) {
        if (this->startCommit()) {
            Q_EMIT this->appDBItemDelete(desktopFilePath);
            qDebug() << "app database delete " << desktopFilePath << "success!";
        } else {
            res = false;
        }
    } else {
        qDebug() << "app database delete " << desktopFilePath << "failed!";
        qWarning() << query.lastError() << cmd;
        m_database.rollback();
        res = false;
    }
    return res;
}

bool AppDBManager::handleDBItemUpdate(const QString &desktopFilePath)
{
    bool res(true);
    int dontDisplay = 0;
    XdgDesktopFile desktopfile;
    desktopfile.load(desktopFilePath);
    if (desktopfile.value("NoDisplay").toString().contains("true") ||
            desktopfile.value("NotShowIn").toString().contains("UKUI") ||
            desktopFilePath.startsWith(AUTOSTART_APP_DESKTOP_PATH)) {
        dontDisplay = 1;
    }
    QString hanzi, pinyin, firstLetterOfPinyin;
    QString localName = desktopfile.localizedValue("Name", "NULL").toString();
    QString firstLetter2All = localName;
    bool isHanzi = true;

    if (localName.contains(QRegExp("[\\x4e00-\\x9fa5]+"))) {
        firstLetter2All = FileUtils::findMultiToneWords(localName).at(0);
    }

    if (desktopfile.contains("Name[zh_CN]")) {
        hanzi = desktopfile.value("Name[zh_CN]").toString();
    } else {
        hanzi = desktopfile.value("Name").toString();
        if (!hanzi.contains(QRegExp("[\\x4e00-\\x9fa5]+"))) {
            isHanzi = false;
        }
    }

    if (isHanzi) {
        QStringList pinyinList = FileUtils::findMultiToneWords(hanzi);
        firstLetter2All = pinyinList.at(0);
        for (int i = 0; i<pinyinList.size(); ++i) {
            if (i % 2) {
                firstLetterOfPinyin += pinyinList.at(i);
            } else {
                pinyin += pinyinList.at(i);
            }
        }
    }

    QSqlQuery sql(m_database);
    sql.prepare(QString("UPDATE appInfo SET "
                        "MODIFYED_TIME='%0',"
                        "LOCAL_NAME=:localName,"
                        "NAME_EN=:enName,"
                        "NAME_ZH=:zhName,"
                        "PINYIN_NAME=:pinyinName,"
                        "FIRST_LETTER_OF_PINYIN=:firstLetterOfPinyin,"
                        "FIRST_LETTER_ALL=:firstLetter2All,"
                        "ICON=:icon,"
                        "TYPE=:type,"
                        "CATEGORY=:categories,"
                        "EXEC=:exec,"
                        "COMMENT=:comment,"
                        "MD5='%1',"
                        "DONT_DISPLAY=%2 "
                        "WHERE DESKTOP_FILE_PATH=:desktopFilePath")
                .arg(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"))
                .arg(getAppDesktopMd5(desktopFilePath))
                .arg(dontDisplay));
    sql.bindValue(":desktopFilePath", desktopFilePath);
    sql.bindValue(":localName", localName);
    sql.bindValue(":enName", desktopfile.value("Name").toString());
    sql.bindValue(":zhName", hanzi);
    sql.bindValue(":pinyinName", pinyin);
    sql.bindValue(":firstLetterOfPinyin", firstLetterOfPinyin);
    sql.bindValue(":firstLetter2All", firstLetter2All);
    sql.bindValue(":icon", desktopfile.value("Icon").toString());
    sql.bindValue(":type", desktopfile.value("Type").toString());
    sql.bindValue(":categories", desktopfile.value("Categories").toString());
    sql.bindValue(":exec", desktopfile.value("Exec").toString());
    sql.bindValue(":comment", desktopfile.value("Comment").toString());

    if (!this->startTransaction()) {
        return false;
    }

    if (sql.exec()) {
        if (this->startCommit()) {
            Q_EMIT this->appDBItemUpdateAll(desktopFilePath);
            qDebug() << "app database update all data of" << desktopFilePath << "success!";
        } else {
            res = false;
        }
    } else {
        qDebug() << "app database update " << desktopFilePath << "failed!";
        qWarning() << m_database.lastError() << sql.lastQuery();
        m_database.rollback();
        res = false;
    }
    return res;
}

bool AppDBManager::handleLaunchTimesUpdate(const QString &desktopFilePath, int num)
{
    qDebug() << "launch times will add:" << num;
    bool res(true);
    QSqlQuery query(m_database);
    query.setForwardOnly(true);
    query.prepare("SELECT LAUNCH_TIMES FROM APPINFO WHERE DESKTOP_FILE_PATH=:desktopFilePath");
    query.bindValue(":desktopFilePath", desktopFilePath);
    if (query.exec()) {
        if (query.next()) {
            int launchTimes = query.value(0).toInt() + num;
            if (!this->startTransaction()) {
                res = false;
                return res;
            }
            query.prepare(QString("UPDATE appInfo SET MODIFYED_TIME='%0', LAUNCH_TIMES=%1, LAUNCHED=%2 WHERE DESKTOP_FILE_PATH=:desktopFilePath")
                        .arg(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"))
                        .arg(launchTimes)
                        .arg(1));
            query.bindValue(":desktopFilePath", desktopFilePath);
            if (!query.exec()) {
                qWarning() << "Set app launch times failed!" << m_database.lastError();
                res = false;
                m_database.rollback();
            } else {
                if (this->startCommit()) {
                    ApplicationInfoMap appInfo;
                    appInfo[desktopFilePath].insert(ApplicationProperty::LaunchTimes, QVariant(launchTimes));
                    appInfo[desktopFilePath].insert(ApplicationProperty::Launched, QVariant(1));
                    Q_EMIT this->appDBItemUpdate(appInfo);
                    qDebug() << "app database update " << desktopFilePath << "launch times: " << launchTimes << "success!";
                } else {
                    res = false;
                }
            }
        } else {
            qWarning() << "Failed to exec next!" << query.lastQuery() << query.lastError();
            res = false;
        }
    } else {
        qWarning() << "Failed to exec:" << query.lastQuery();
        res = false;
    }

    return res;
}

bool AppDBManager::handleFavoritesStateUpdate(const QString &desktopFilePath, const uint num)
{
    bool res(true);
    QSqlQuery query(m_database);
    query.setForwardOnly(true);
    QString cmd;
    ApplicationInfoMap infos;

    //获取应用在数据库中的favorites标志位
    int previousPos = -1;
    cmd = "SELECT FAVORITES FROM APPINFO WHERE DESKTOP_FILE_PATH =:desktopFilePath";
    query.prepare(cmd);
    query.bindValue(":desktopFilePath", desktopFilePath);
    if (query.exec()) {
        if (query.next()) {
            previousPos = query.value("FAVORITES").toInt();
        } else {
            qWarning() << query.lastQuery() << query.lastError();
        }
    } else {
        qWarning() << query.lastQuery() << query.lastError();
    }

    //收藏位未改变
    if (previousPos == num) {
        res = false;
        qWarning() << "favorites state has no changes, I quit!";
        return res;
    }

    //查询目前favorites最大值
    int maxFavorite = -1;
    query.prepare("SELECT max(FAVORITES) as max FROM APPINFO");
    if (query.exec()) {
        if (query.next()) {
            maxFavorite = query.value("max").toInt();
            if (maxFavorite + 1 < num) {
                qWarning() << QString("Max favorites pos is %0.To be moved to a invalid pos, I quit!!").arg(query.value("max").toInt());
                res = false;
            }
        }
    } else {
        qWarning() << query.lastError() << query.lastQuery();
        res = false;
    }
    if (!res) {
        return res;
    }

    //取消收藏时，将对应应用前移
    if (!num) {
        if (previousPos < 1) {
            res = false;
        }
        if (res) {
            if (!this->startTransaction()) {
                res = false;
                return res;
            }
            cmd = QString("UPDATE APPINFO SET MODIFYED_TIME='%0', FAVORITES=FAVORITES-1 WHERE FAVORITES > %1;")
                    .arg(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"))
                    .arg(previousPos);
            if (query.exec(cmd)) {
                cmd = QString("SELECT DESKTOP_FILE_PATH,FAVORITES FROM APPINFO WHERE FAVORITES >= %0;").arg(previousPos);
                if (query.exec(cmd)) {
                    qDebug() << "Prepare to cancel the favorite state of" << desktopFilePath;
                    while (query.next()) {
                        infos[query.value("DESKTOP_FILE_PATH").toString()].insert(ApplicationProperty::Favorites, query.value("FAVORITES"));
                    }
                } else {
                    qWarning() << query.lastQuery() << query.lastError();
                }
            } else {
                res = false;
                qWarning() << query.lastQuery() << query.lastError();
                m_database.rollback();
            }
        }
    } else {
        //直接设置时(要设置的应用未被收藏），查询要设置的favorites标志位是否被占用，占用则将该应用及其之后的应用的favorites标志位后移
        if (!previousPos) {
            cmd = QString("SELECT DESKTOP_FILE_PATH FROM APPINFO WHERE FAVORITES = %1").arg(num);
            if (!query.exec(cmd)) {
                qWarning() << "Fail to exec:" << cmd << "because:" << query.lastError();
                res = false;
            } else {
                if (!this->startTransaction()) {
                    return false;
                }
                if (query.next()) {
                    //默认收藏后顶到第一个，其余后移，若想直接收藏到对应位置则将该位置后的收藏应用后移
                    query.prepare(QString("UPDATE APPINFO SET MODIFYED_TIME='%0', FAVORITES=FAVORITES+1 WHERE FAVORITES >= %1;")
                                  .arg(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"))
                                  .arg(num));
                    if (!query.exec()) {
                        res = false;
                        qWarning() << query.lastError() << query.lastQuery();
                        m_database.rollback();
                    } else {
                        cmd = QString("SELECT DESKTOP_FILE_PATH, FAVORITES FROM APPINFO WHERE FAVORITES >= %1").arg(num);
                        if (!query.exec(cmd)) {
                            qWarning() << query.lastError() << query.lastQuery();
                            res = false;
                        } else {
                            while (query.next()) {
                                infos[query.value("DESKTOP_FILE_PATH").toString()].insert(ApplicationProperty::Favorites, query.value("FAVORITES"));
                            }
                        }
                    }
                }
            }
        } else {
            //触发修改位置逻辑
            res = maxFavorite < num? false : this->handleChangeFavoritesPos(desktopFilePath, num, previousPos, infos);
            qDebug() << "change favorites pos:" << res;
        }
    }
    //移动位置执行不成功则不去更新对应应用的favorites标志位
    if (!res) {
        return res;
    }


    //更新favorites状态
    cmd = QString("UPDATE APPINFO SET MODIFYED_TIME='%0', FAVORITES=%1 WHERE DESKTOP_FILE_PATH=:desktopFilePath")
                  .arg(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"))
                  .arg(num);
    query.prepare(cmd);
    query.bindValue(":desktopFilePath", desktopFilePath);
    if (!query.exec()) {
        qWarning() << "Set app favorites state failed!" << m_database.lastError();
        res = false;
        m_database.rollback();
    } else {
        if (this->startCommit()) {
            infos[desktopFilePath].insert(ApplicationProperty::Favorites, QVariant(num));
            Q_EMIT this->appDBItemUpdate(infos);
            qDebug() << "app database update " << desktopFilePath << "favorites state: " << num << "success!";
        } else  {
            res = false;
        }
    }
    return res;
}

bool AppDBManager::handleChangeFavoritesPos(const QString &desktopFilePath, const uint pos, const int previousPos, ApplicationInfoMap &updatedInfo)
{
    if (pos < 1) {
        qWarning() << "To be moved to a invalid favorites pos , I quit!!";
        return false;
    }

    if (previousPos < 1) {
        qWarning() << QString("app: %1 is not a favorites app, I quit!!").arg(desktopFilePath);
        return false;
    }

    bool res(true);
    QSqlQuery query(m_database);
    query.setForwardOnly(true);

    QString condition;
    if (previousPos > pos) {
        condition = "FAVORITES=FAVORITES+1";
    } else {
        condition = "FAVORITES=FAVORITES-1";
    }

    query.prepare(QString("UPDATE APPINFO SET %0 WHERE FAVORITES BETWEEN MIN(%1, %2) AND MAX(%1, %2)")
                  .arg(condition)
                  .arg(previousPos)
                  .arg(pos));

    if (!this->startTransaction()) {
        return false;
    }

    //更新原位置和新位置之间的应用的位置
    if (query.exec()) {
        query.prepare(QString("SELECT DESKTOP_FILE_PATH,FAVORITES FROM APPINFO WHERE FAVORITES BETWEEN MIN(%1, %2) AND MAX(%1, %2)")
                      .arg(previousPos)
                      .arg(pos));
        if (query.exec()) {
            while (query.next()) {
                updatedInfo[query.value("DESKTOP_FILE_PATH").toString()].insert(ApplicationProperty::Favorites, query.value("FAVORITES"));
            }
        }
    } else {
        res = false;
        qWarning() << "Fail to change favorite-app pos, because: " << query.lastError() << " when exec :" << query.lastQuery();
        m_database.rollback();
    }

    return res;
}

bool AppDBManager::handleTopStateUpdate(const QString &desktopFilePath, const uint num)
{
    bool res(true);
    QSqlQuery query(m_database);
    query.setForwardOnly(true);
    QString cmd;
    ApplicationInfoMap infos;

    //获取应用在数据库中的top标志位
    int previousPos = -1;
    cmd = "SELECT TOP FROM APPINFO WHERE DESKTOP_FILE_PATH =:desktopFilePath";
    query.prepare(cmd);
    query.bindValue(":desktopFilePath", desktopFilePath);
    if (query.exec()) {
        if (query.next()) {
            previousPos = query.value("TOP").toInt();
        } else {
            qWarning() << query.lastQuery() << query.lastError();
        }
    } else {
        qWarning() << query.lastQuery() << query.lastError();
    }

    //top位未改变
    if (previousPos == num) {
        res = false;
        qWarning() << "Top state has no changes, I quit!";
        return res;
    }

    //查询目前top最大值
    int maxTop = -1;
    query.prepare("SELECT max(TOP) as max FROM APPINFO");
    if (query.exec()) {
        if (query.next()) {
            maxTop = query.value("max").toInt();
            if (maxTop + 1 < num) {
                qWarning() << QString("Max top pos is %0.To be moved to a invalid pos, I quit!!").arg(query.value("max").toInt());
                res = false;
            }
        } else {
            res = false;
        }
    } else {
        qWarning() << query.lastError() << query.lastQuery();
        res = false;
    }
    if (!res) {
        return res;
    }

    //取消置顶时，将对应应用前移
    if (!num) {
        if (previousPos < 1) {
            res = false;
        }
        if (res) {
            if (!this->startTransaction()) {
                res = false;
                return res;
            }
            cmd = QString("UPDATE APPINFO SET MODIFYED_TIME='%0', TOP=TOP-1 WHERE TOP > %1;")
                    .arg(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"))
                    .arg(previousPos);
            if (query.exec(cmd)) {
                cmd = QString("SELECT DESKTOP_FILE_PATH,TOP FROM APPINFO WHERE TOP >= %0;").arg(previousPos);
                if (query.exec(cmd)) {
                    qDebug() << "Prepare to cancel the top state of" << desktopFilePath;
                    while (query.next()) {
                        infos[query.value("DESKTOP_FILE_PATH").toString()].insert(ApplicationProperty::Top, query.value("TOP"));
                    }
                } else {
                    qWarning() << query.lastQuery() << query.lastError();
                }
            } else {
                res = false;
                qWarning() << query.lastQuery() << query.lastError();
                m_database.rollback();
            }
        }
    } else {
        //直接设置时，查询要设置的top标志位是否被占用，占用则将该应用及其之后的应用的top标志位后移
        if (!previousPos) {
            cmd = QString("SELECT DESKTOP_FILE_PATH FROM APPINFO WHERE TOP = %1").arg(num);
            if (!query.exec(cmd)) {
                qWarning() << "Fail to exec:" << cmd << "because:" << query.lastError();
            } else {
                if (!this->startTransaction()) {
                    return false;
                }
                if (query.next()) {
                    //默认置顶后顶到第一个，其余后移，若想直接置顶到对应位置则将该位置后的置顶应用后移
                    query.prepare(QString("UPDATE APPINFO SET MODIFYED_TIME='%0', TOP=TOP+1 WHERE TOP >= %1;")
                                  .arg(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"))
                                  .arg(num));
                    if (!query.exec()) {
                        qWarning() << query.lastError() << query.lastQuery();
                        res = false;
                        m_database.rollback();
                    } else {
                        cmd = QString("SELECT DESKTOP_FILE_PATH, TOP FROM APPINFO WHERE TOP >= %1").arg(num);
                        if (!query.exec(cmd)) {
                            qWarning() << query.lastError() << query.lastQuery();
                            res = false;
                        } else {
                            while (query.next()) {
                                infos[query.value("DESKTOP_FILE_PATH").toString()].insert(ApplicationProperty::Top, query.value("TOP"));
                            }
                        }
                    }
                }
            }
        } else {
            //触发修改位置逻辑
            res = maxTop < num ? false : this->handleChangeTopPos(desktopFilePath, num, previousPos, infos);
            qDebug() << "Change top pos:" << res;
        }
    }
    //移动位置执行不成功则不去更新对应应用的top标志位
    if (!res) {
        return res;
    }


    //更新top状态
    cmd = QString("UPDATE APPINFO SET MODIFYED_TIME='%0', TOP=%1 WHERE DESKTOP_FILE_PATH=:desktopFilePath")
                  .arg(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"))
                  .arg(num);
    query.prepare(cmd);
    query.bindValue(":desktopFilePath", desktopFilePath);
    if (!query.exec()) {
        qWarning() << "Set app top state failed!" << query.lastError();
        res = false;
        m_database.rollback();
    } else {
        if (this->startCommit()) {
            infos[desktopFilePath].insert(ApplicationProperty::Top, QVariant(num));
            Q_EMIT this->appDBItemUpdate(infos);
            qDebug() << "app database update " << desktopFilePath << "top state: " << num << "success!";
        } else {
            res = false;
        }
    }
    return res;
}

bool AppDBManager::handleChangeTopPos(const QString &desktopFilePath, uint pos, const int previousPos, ApplicationInfoMap &updatedInfo)
{
    if (pos < 1) {
        qWarning() << "To be moved to a invalid top pos , I quit!!";
        return false;
    }

    if (previousPos < 1) {
        qWarning() << QString("app: %1 is not a top app, I quit!!").arg(desktopFilePath);
        return false;
    }

    bool res(true);
    QSqlQuery query(m_database);
    query.setForwardOnly(true);

    QString condition;
    if (previousPos > pos) {
        condition = "TOP=TOP+1";
    } else {
        condition = "TOP=TOP-1";
    }

    query.prepare(QString("UPDATE APPINFO SET %0 WHERE TOP BETWEEN MIN(%1, %2) AND MAX(%1, %2)")
                  .arg(condition)
                  .arg(previousPos)
                  .arg(pos));

    if (!this->startTransaction()) {
        res = false;
        return res;
    }

    //更新原位置和新位置之间的应用的位置
    if (query.exec()) {
        query.prepare(QString("SELECT DESKTOP_FILE_PATH,TOP FROM APPINFO WHERE TOP BETWEEN MIN(%1, %2) AND MAX(%1, %2)")
                      .arg(previousPos)
                      .arg(pos));
        if (query.exec()) {
            while (query.next()) {
                updatedInfo[query.value("DESKTOP_FILE_PATH").toString()].insert(ApplicationProperty::Top, query.value("TOP"));
            }
        }
    } else {
        qWarning() << "Fail to change favorite-app pos, because: " << query.lastError() << " when exec :" << query.lastQuery();
        res = false;
        m_database.rollback();
    }

    return res;
}

bool AppDBManager::handleLockStateUpdate(const QString &desktopFilePath, int num)
{
    if (!this->startTransaction()) {
        return false;
    }
    bool res(true);
    QSqlQuery sql(m_database);
    sql.prepare(QString("UPDATE appInfo SET MODIFYED_TIME='%0', LOCK=%1 WHERE DESKTOP_FILE_PATH=:desktopFilePath")
                .arg(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"))
                .arg(num));
    sql.bindValue(":desktopFilePath", desktopFilePath);
    if (!sql.exec()) {
        qWarning() << "Set app lock state failed!" << m_database.lastError();
        res = false;
        m_database.rollback();
    } else {
        if (this->startCommit()) {
            ApplicationInfoMap appInfo;
            appInfo[desktopFilePath].insert(ApplicationProperty::Lock, QVariant(num));
            Q_EMIT this->appDBItemUpdate(appInfo);
            qDebug() << "app database update " << desktopFilePath << "lock state: " << num << "success!";
        } else {
            res = false;
        }
    }
    return res;
}

void AppDBManager::handleDataBaseRefresh(const QStringList &appPaths, bool dbVersionNeedUpdate)
{
    QMap<QString, QString> dataMap;
    QSqlQuery query(m_database);
    query.setForwardOnly(true);
    QString condition;
    for (int i = 0; i < appPaths.size(); i++) {
        condition.append("DESKTOP_FILE_PATH LIKE ? OR ");
    }
    condition = condition.left(condition.lastIndexOf(" OR "));
    query.prepare(QString("SELECT DESKTOP_FILE_PATH,MD5 FROM APPINFO WHERE %0").arg(condition));
    for (int t = 0; t < appPaths.size(); t++) {
        query.bindValue(t, appPaths.at(t) + "/%");
    }

    if (!query.exec()) {
        qWarning() << m_database.lastError() << query.lastError();
    } else {
        query.exec();
        while (query.next()) {
            dataMap.insert(query.value("DESKTOP_FILE_PATH").toString(), query.value("MD5").toString());
        }
    }

    //遍历desktop文件
    QFileInfoList infos;
    for (const QString &path : appPaths) {
        this->loadDesktopFilePaths(path, infos);
    }

    if(infos.size() < 1) {
        return;
    }
    XdgDesktopFile desktopfile;
    for (int i = 0; i < infos.length(); i++) {
        QFileInfo fileInfo = infos.at(i);
        QString path = fileInfo.filePath();
        //对目录递归
        if (fileInfo.isDir()) {
            loadDesktopFilePaths(path, infos);
            continue;
        }
        //排除非法路径（非desktop文件）
        if (!path.endsWith(".desktop")) {
            continue;
        }

        desktopfile.load(path);
        //排除loaclized名字为空
        if (desktopfile.localizedValue("Name").toString().isEmpty()) {
            continue;
        }

        if (!dataMap.isEmpty()) {
            //数据库有记录
            if (dataMap.contains(path)) {
                if (!QString::compare(dataMap.value(path), getAppDesktopMd5(path)) && !dbVersionNeedUpdate) {
                    //判断系统语言是否改变
                    if (m_localeChanged) {
                        this->handleLocaleDataUpdate(path);
                    }
                    dataMap.remove(path);
                    continue;
                } else {
                    //数据库有记录但md5值改变或数据库版本需要更新则update
                    this->handleDBItemUpdate(path);
                    dataMap.remove(path);
                    continue;
                }
            } else {
                //数据库中没有记录则insert
                this->handleDBItemInsert(path);
                dataMap.remove(path);
                continue;
            }
        }
        //数据库为空则全部insert
        this->handleDBItemInsert(path);
        dataMap.remove(path);
    }

    //遍历完成后重置标志位
    m_localeChanged = false;

    //数据库冗余项直接delete
    if (!dataMap.isEmpty()) {
        for (auto i = dataMap.constBegin(); i != dataMap.constEnd(); i++) {
            this->handleDBItemDelete(i.key());
        }
    }
}

QString AppDBManager::tranPidToDesktopFp(int pid)
{
    QString exePath = QFile::symLinkTarget("/proc/" + QString::number(pid) + "/exe");
    QString desktopfp;

    QSqlQuery sql(m_database);
    sql.setForwardOnly(true);
    sql.prepare("SELECT DESKTOP_FILE_PATH, EXEC FROM APPINFO WHERE EXEC LIKE :exePath AND DONT_DISPLAY = 0");
    sql.bindValue(":exePath", "%" + exePath.section('/', -1) + "%");

    if (sql.exec()) {
        QMap<QString, QString> execInfos;
        while (sql.next()) {
            execInfos[sql.value("DESKTOP_FILE_PATH").toString()] = sql.value("EXEC").toString();
            desktopfp = sql.value("DESKTOP_FILE_PATH").toString();
        }
        //筛选后有多个结果时进一步过滤
        if (execInfos.size() > 1) {
            desktopfp.clear();
            for (const QString &path : execInfos.values()) {
                QStringList execlist = path.split(" ", QString::SkipEmptyParts);
                for (QString &partOfExec : execlist) {
                    //remove the cmd option
                    if (partOfExec.contains("%")) {
                        continue;
                    }
                    //remove the " in cmd
                    if (partOfExec.contains("\"")) {
                        partOfExec.remove("\"");
                    }
                    //compare the binary path
                    if ((partOfExec.contains("/") && partOfExec == exePath) ||
                            (partOfExec == exePath.section("/", -1))) {
                        desktopfp = execInfos.key(path);
                        break;
                    }
                }
                if (!desktopfp.isEmpty()) {
                    break;
                }
            }
        }

        if (!desktopfp.isEmpty()) {
            qDebug() << "PID: "  << pid << "Desktop file path: " << desktopfp;
        } else {
            qWarning() << "Can not find the desktop file of" << exePath <<  "by pid:" << pid;
        }
    } else {
        qWarning() << "Fail to exec cmd" << sql.lastQuery() << m_database.lastError();
    }
    return desktopfp;
}

void AppDBManager::insertDBItem(const QString &desktopfd)
{
    PendingAppInfo item(desktopfd, PendingAppInfo::HandleType::Insert);
    PendingAppInfoQueue::getAppInfoQueue().enqueue(item);
}

void AppDBManager::updateDBItem(const QString &desktopfd)
{
    PendingAppInfo item(desktopfd, PendingAppInfo::HandleType::UpdateAll);
    PendingAppInfoQueue::getAppInfoQueue().enqueue(item);
}

void AppDBManager::deleteDBItem(const QString &desktopfd)
{
    PendingAppInfo item(desktopfd, PendingAppInfo::HandleType::Delete);
    PendingAppInfoQueue::getAppInfoQueue().enqueue(item);
}

void AppDBManager::updateLocaleData(const QString &desktopFilePath)
{
    PendingAppInfo item(desktopFilePath, PendingAppInfo::HandleType::UpdateLocaleData);
    PendingAppInfoQueue::getAppInfoQueue().enqueue(item);
}

void AppDBManager::updateLaunchTimes(const QString &desktopFilePath)
{
    PendingAppInfo item(desktopFilePath, PendingAppInfo::HandleType::UpdateLaunchTimes);
    item.setLaunchWillAdd(true);
    item.setLaunchTimes(1);
    PendingAppInfoQueue::getAppInfoQueue().enqueue(item);
}

void AppDBManager::updateFavoritesState(const QString &desktopFilePath, uint num)
{
    PendingAppInfo item(desktopFilePath, PendingAppInfo::HandleType::UpdateFavorites);
    item.setFavorites(num);
    PendingAppInfoQueue::getAppInfoQueue().enqueue(item);
}

void AppDBManager::updateTopState(const QString &desktopFilePath, uint num)
{
    PendingAppInfo item(desktopFilePath, PendingAppInfo::HandleType::UpdateTop);
    item.setTop(num);
    PendingAppInfoQueue::getAppInfoQueue().enqueue(item);
}

void AppDBManager::udpateLockState(const QString &desktopFilePath, int num)
{
    PendingAppInfo item(desktopFilePath, PendingAppInfo::HandleType::UpdateTop);
    item.setLock(num);
    PendingAppInfoQueue::getAppInfoQueue().enqueue(item);
}