/*
 * This file is part of smolbote. It's copyrighted by the contributors recorded
 * in the version control history of the file, available from its original
 * location: git://neueland.iserlohn-fortress.net/smolbote.git
 *
 * SPDX-License-Identifier: GPL-3.0
 */

#include "xbel.h"
#include <QFile>

Xbel::Xbel(const QString &path)
{
    m_path = path;
}

BookmarkItem *Xbel::read()
{
    BookmarkItem *root = new BookmarkItem(BookmarkItem::Root, nullptr);
    root->title = QObject::tr("Title");
    root->href = QObject::tr("href");

    // if the path is empty, there is nothing to load
    if(m_path.isEmpty()) {
        return root;
    }

    QFile file(m_path);
    if(!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
        // file cannot be opened for reading
        return root;
    }

    QXmlStreamReader xmlReader(&file);

    if(xmlReader.readNextStartElement()) {
        if(!(xmlReader.name() == "xbel" && xmlReader.attributes().value("version") == "1.0")) {
            // invalid xbel
            qWarning("Error parsing %s", qUtf8Printable(m_path));
            return root;
        }

        readChildElements(xmlReader, root);
    }

    return root;
}

void Xbel::readChildElements(QXmlStreamReader &reader, BookmarkItem *parentItem)
{
    while(reader.readNextStartElement()) {
        if(reader.name() == "title") {
            parentItem->title = reader.readElementText();

        } else if(reader.name() == "folder") {
            BookmarkItem *item = new BookmarkItem(BookmarkItem::Folder, parentItem);
            item->href = reader.attributes().value("href").toString();
            item->folded = reader.attributes().value("folded") == QLatin1String("yes");
            readChildElements(reader, item);

        } else if(reader.name() == "bookmark") {
            BookmarkItem *item = new BookmarkItem(BookmarkItem::Bookmark, parentItem);
            item->href = reader.attributes().value("href").toString();
            readChildElements(reader, item);

        } else {
            reader.skipCurrentElement();
        }
    }
}