/**
 * This file is part of GPGFrontend.
 *
 * GPGFrontend 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.
 *
 * Foobar 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 Foobar.  If not, see <https://www.gnu.org/licenses/>.
 *
 * The initial version of the source code is inherited from gpg4usb-team.
 * Their source code version also complies with GNU General Public License.
 *
 * The source code version of this software was modified and released
 * by Saturneric<eric@bktus.com> starting on May 12, 2021.
 *
 */

#include "ui/widgets/HelpPage.h"

#include <utility>

HelpPage::HelpPage(const QString &path, QWidget *parent) :
        QWidget(parent) {

    browser = new QTextBrowser();
    auto *mainLayout = new QVBoxLayout();
    mainLayout->setSpacing(0);
    mainLayout->addWidget(browser);
    mainLayout->setContentsMargins(0, 0, 0, 0);
    setLayout(mainLayout);

    connect(browser, SIGNAL(anchorClicked(QUrl)), this, SLOT(slotOpenUrl(QUrl)));
    browser->setOpenLinks(false);
    browser->setSource(localizedHelp(QUrl(path)));
    browser->setFocus();

}

void HelpPage::slotOpenUrl(const QUrl &url) {
    browser->setSource(localizedHelp(url));
};

/**
 * @brief HelpPage::localizedHelp
 * check if the requested file is also available with the locale,
 * e.g. return index.de.html if index.html was requested but the
 * locale is de and index.de.html is available
 * @param url
 * @return
 */
QUrl HelpPage::localizedHelp(const QUrl &url) {
    QString path = url.toLocalFile();
    QString filename = path.mid(path.lastIndexOf("/") + 1);
    QString filepath = path.left(path.lastIndexOf("/") + 1);
    QStringList fileparts = filename.split(".");

    //QSettings settings;
    QString lang = QSettings().value("int/lang", QLocale::system().name()).toString();
    if (lang.isEmpty()) {
        lang = QLocale::system().name();
    }

    fileparts.insert(1, lang);
    QString langfile = filepath + fileparts.join(".");

    if (QFile(QUrl(langfile).toLocalFile()).exists()) {
        return langfile;
    } else {
        return path;
    }

}

QTextBrowser *HelpPage::getBrowser() {
    return browser;
}