/* ============================================================
* QupZilla - WebKit based browser
* Copyright (C) 2010-2012  David Rosca <nowrep@gmail.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 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 <http://www.gnu.org/licenses/>.
* ============================================================ */
#include "bookmarkssidebar.h"
#include "mainapplication.h"
#include "ui_bookmarkssidebar.h"
#include "qupzilla.h"
#include "iconprovider.h"
#include "tabbedwebview.h"
#include "bookmarkstoolbar.h"
#include "tabwidget.h"
#include "bookmarksmodel.h"
#include "qzsettings.h"

#include <QMenu>
#include <QTimer>
#include <QClipboard>
#include <QSqlQuery>

BookmarksSideBar::BookmarksSideBar(QupZilla* mainClass, QWidget* parent)
    : QWidget(parent)
    , m_isRefreshing(false)
    , ui(new Ui::BookmarksSideBar)
    , p_QupZilla(mainClass)
    , m_bookmarksModel(mApp->bookmarksModel())
{
    ui->setupUi(this);

    ui->bookmarksTree->setDefaultItemShowMode(TreeWidget::ItemsExpanded);
    connect(ui->bookmarksTree, SIGNAL(customContextMenuRequested(const QPoint &)), this, SLOT(contextMenuRequested(const QPoint &)));
    connect(ui->bookmarksTree, SIGNAL(itemControlClicked(QTreeWidgetItem*)), this, SLOT(itemControlClicked(QTreeWidgetItem*)));
    connect(ui->bookmarksTree, SIGNAL(itemMiddleButtonClicked(QTreeWidgetItem*)), this, SLOT(itemControlClicked(QTreeWidgetItem*)));
    connect(ui->bookmarksTree, SIGNAL(itemDoubleClicked(QTreeWidgetItem*, int)), this, SLOT(itemDoubleClicked(QTreeWidgetItem*)));
    connect(ui->search, SIGNAL(textChanged(QString)), ui->bookmarksTree, SLOT(filterString(QString)));

    connect(m_bookmarksModel, SIGNAL(bookmarkAdded(BookmarksModel::Bookmark)), this, SLOT(addBookmark(BookmarksModel::Bookmark)));
    connect(m_bookmarksModel, SIGNAL(bookmarkDeleted(BookmarksModel::Bookmark)), this, SLOT(removeBookmark(BookmarksModel::Bookmark)));
    connect(m_bookmarksModel, SIGNAL(bookmarkEdited(BookmarksModel::Bookmark, BookmarksModel::Bookmark)), this, SLOT(bookmarkEdited(BookmarksModel::Bookmark, BookmarksModel::Bookmark)));
    connect(m_bookmarksModel, SIGNAL(folderAdded(QString)), this, SLOT(addFolder(QString)));
    connect(m_bookmarksModel, SIGNAL(folderDeleted(QString)), this, SLOT(removeFolder(QString)));
    connect(m_bookmarksModel, SIGNAL(folderRenamed(QString, QString)), this, SLOT(renameFolder(QString, QString)));

    QTimer::singleShot(0, this, SLOT(refreshTable()));
}

void BookmarksSideBar::itemControlClicked(QTreeWidgetItem* item)
{
    if (!item || item->text(1).isEmpty()) {
        return;
    }

    int id = item->data(0, Qt::UserRole + 10).toInt();
    mApp->bookmarksModel()->countUpBookmark(id);

    const QUrl &url = QUrl::fromEncoded(item->text(1).toUtf8());
    p_QupZilla->tabWidget()->addView(url, item->text(0));
}

void BookmarksSideBar::itemDoubleClicked(QTreeWidgetItem* item)
{
    if (!item || item->text(1).isEmpty()) {
        return;
    }

    int id = item->data(0, Qt::UserRole + 10).toInt();
    mApp->bookmarksModel()->countUpBookmark(id);

    const QUrl &url = QUrl::fromEncoded(item->text(1).toUtf8());
    p_QupZilla->loadAddress(url);
}

void BookmarksSideBar::loadInNewTab()
{
    QTreeWidgetItem* item = ui->bookmarksTree->currentItem();
    QAction* action = qobject_cast<QAction*>(sender());

    if (!item || !action) {
        return;
    }

    int id = item->data(0, Qt::UserRole + 10).toInt();
    mApp->bookmarksModel()->countUpBookmark(id);

    p_QupZilla->tabWidget()->addView(action->data().toUrl(), item->text(0), qzSettings->newTabPosition);
}

void BookmarksSideBar::copyAddress()
{
    if (QAction* action = qobject_cast<QAction*>(sender())) {
        QApplication::clipboard()->setText(action->data().toUrl().toEncoded());
    }
}

void BookmarksSideBar::deleteItem()
{
    QTreeWidgetItem* item = ui->bookmarksTree->currentItem();
    if (!item) {
        return;
    }

    int id = item->data(0, Qt::UserRole + 10).toInt();
    m_bookmarksModel->removeBookmark(id);
}

void BookmarksSideBar::contextMenuRequested(const QPoint &position)
{
    if (!ui->bookmarksTree->itemAt(position)) {
        return;
    }
    QUrl link = QUrl::fromEncoded(ui->bookmarksTree->itemAt(position)->text(1).toUtf8());
    if (link.isEmpty()) {
        return;
    }

    QMenu menu;
    menu.addAction(tr("Open link in current &tab"), p_QupZilla, SLOT(loadActionUrl()))->setData(link);
    menu.addAction(tr("Open link in &new tab"), this, SLOT(loadInNewTab()))->setData(link);
    menu.addAction(tr("Copy address"), this, SLOT(copyAddress()))->setData(link);
    menu.addSeparator();
    menu.addAction(tr("&Delete"), this, SLOT(deleteItem()));

    //Prevent choosing first option with double rightclick
    QPoint pos = ui->bookmarksTree->viewport()->mapToGlobal(position);
    QPoint p(pos.x(), pos.y() + 1);
    menu.exec(p);
}

void BookmarksSideBar::addBookmark(const BookmarksModel::Bookmark &bookmark)
{
    QString translatedFolder = BookmarksModel::toTranslatedFolder(bookmark.folder);
    QTreeWidgetItem* item = new QTreeWidgetItem();
    item->setText(0, bookmark.title);
    item->setText(1, bookmark.url.toEncoded());
    item->setData(0, Qt::UserRole + 10, bookmark.id);
    item->setIcon(0, qIconProvider->iconFromImage(bookmark.image));
    item->setToolTip(0, bookmark.url.toEncoded());

    if (bookmark.folder != "unsorted") {
        ui->bookmarksTree->appendToParentItem(translatedFolder, item);
    }
    else {
        ui->bookmarksTree->addTopLevelItem(item);
    }

//    if (!ui->search->text().isEmpty())
    item->setHidden(!bookmark.title.contains(ui->search->text(), Qt::CaseInsensitive));
}

void BookmarksSideBar::removeBookmark(const BookmarksModel::Bookmark &bookmark)
{
    if (bookmark.folder == "unsorted") {
        QList<QTreeWidgetItem*> list = ui->bookmarksTree->findItems(bookmark.title, Qt::MatchExactly);
        if (list.count() == 0) {
            return;
        }
        QTreeWidgetItem* item = list.at(0);
        if (item && item->data(0, Qt::UserRole + 10).toInt() == bookmark.id) {
            ui->bookmarksTree->deleteItem(item);
        }
    }
    else {
        QList<QTreeWidgetItem*> list = ui->bookmarksTree->findItems(BookmarksModel::toTranslatedFolder(bookmark.folder), Qt::MatchExactly);
        if (list.count() == 0) {
            return;
        }
        QTreeWidgetItem* parentItem = list.at(0);
        if (!parentItem) {
            return;
        }
        for (int i = 0; i < parentItem->childCount(); i++) {
            QTreeWidgetItem* item = parentItem->child(i);
            if (!item) {
                continue;
            }
            if (item->text(0) == bookmark.title  && item->data(0, Qt::UserRole + 10).toInt() == bookmark.id) {
                ui->bookmarksTree->deleteItem(item);
                return;
            }
        }
    }
}

void BookmarksSideBar::bookmarkEdited(const BookmarksModel::Bookmark &before, const BookmarksModel::Bookmark &after)
{
    removeBookmark(before);
    addBookmark(after);
}

void BookmarksSideBar::addFolder(const QString &name)
{
    QTreeWidgetItem* item = new QTreeWidgetItem(ui->bookmarksTree);
    item->setText(0, name);
    item->setIcon(0, style()->standardIcon(QStyle::SP_DirIcon));
}

void BookmarksSideBar::removeFolder(const QString &name)
{
    QList<QTreeWidgetItem*> list = ui->bookmarksTree->findItems(name, Qt::MatchExactly);
    if (list.count() == 0) {
        return;
    }
    QTreeWidgetItem* item = list.at(0);
    if (item) {
        ui->bookmarksTree->deleteItem(item);
    }
}

void BookmarksSideBar::renameFolder(const QString &before, const QString &after)
{
    QList<QTreeWidgetItem*> list = ui->bookmarksTree->findItems(before, Qt::MatchExactly);
    if (list.count() == 0) {
        return;
    }
    QTreeWidgetItem* item = list.at(0);
    if (!item) {
        return;
    }

    item->setText(0, after);
}

void BookmarksSideBar::refreshTable()
{
    m_isRefreshing = true;
    ui->bookmarksTree->setUpdatesEnabled(false);
    ui->bookmarksTree->clear();

    QSqlQuery query;
    QTreeWidgetItem* newItem = new QTreeWidgetItem(ui->bookmarksTree);
    newItem->setText(0, _bookmarksMenu);
    newItem->setIcon(0, style()->standardIcon(QStyle::SP_DirIcon));
    ui->bookmarksTree->addTopLevelItem(newItem);

    query.exec("SELECT name FROM folders WHERE subfolder!='yes'");
    while (query.next()) {
        newItem = new QTreeWidgetItem(ui->bookmarksTree);
        newItem->setText(0, query.value(0).toString());
        newItem->setIcon(0, style()->standardIcon(QStyle::SP_DirIcon));
        ui->bookmarksTree->addTopLevelItem(newItem);
    }

    query.exec("SELECT title, url, id, folder, icon FROM bookmarks");
    while (query.next()) {
        QString title = query.value(0).toString();
        QUrl url = query.value(1).toUrl();
        int id = query.value(2).toInt();
        QString folder = query.value(3).toString();
        QIcon icon = qIconProvider->iconFromImage(QImage::fromData(query.value(4).toByteArray()));
        QTreeWidgetItem* item;
        if (folder == "bookmarksMenu") {
            folder = _bookmarksMenu;
        }
        if (folder == "bookmarksToolbar") {
            continue;
        }

        if (folder != "unsorted") {
            QList<QTreeWidgetItem*> findParent = ui->bookmarksTree->findItems(folder, 0);
            if (findParent.count() != 1) {
                continue;
            }

            item = new QTreeWidgetItem(findParent.at(0));

        }
        else {
            item = new QTreeWidgetItem(ui->bookmarksTree);
        }

        item->setText(0, title);
        item->setText(1, url.toEncoded());
        item->setToolTip(0, url.toEncoded());

        item->setData(0, Qt::UserRole + 10, id);
        item->setIcon(0, icon);
        ui->bookmarksTree->addTopLevelItem(item);
    }
    ui->bookmarksTree->expandAll();

    ui->bookmarksTree->setUpdatesEnabled(true);
    m_isRefreshing = false;
}

BookmarksSideBar::~BookmarksSideBar()
{
    delete ui;
}