/*
 * 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: https://neueland.iserlohn-fortress.net/gitea/aqua/smolbote
 *
 * SPDX-License-Identifier: GPL-3.0
 */

#include "bookmarkswidget.h"
#include "bookmarkmodel.h"
#include "editbookmarkdialog.h"
#include "ui_bookmarksform.h"
#include <QFileDialog>
#include <QTreeView>
#include <QUrl>

inline void expandChildren(QTreeView *view, BookmarkModel *m_model, const QModelIndex &rootIndex)
{
    for(int i = 0; i < m_model->rowCount(rootIndex); ++i) {
        QModelIndex idx = m_model->index(i, 0, rootIndex);
        if(m_model->isItemExpanded(idx))
            view->expand(idx);

        // check if index has children
        if(m_model->rowCount(idx) > 0)
            expandChildren(view, m_model, idx);
    }
}

inline void loadModel(const QString &path, BookmarkModel *m_model, QTreeView *view)
{
    view->setModel(nullptr);

    if(path.endsWith(".xbel")) {
        QFile f(path);
        if(f.open(QIODevice::ReadOnly | QIODevice::Text)) {
            BookmarkFormat<XbelFormat>(&f) >> m_model;
            f.close();
        }

    } else if(path.endsWith(".json")) {
        QFile f(path);
        if(f.open(QIODevice::ReadOnly | QIODevice::Text)) {
            BookmarkFormat<FirefoxJsonFormat>(&f) >> m_model;
            f.close();
        }
    }

    view->setModel(m_model);
    expandChildren(view, m_model, QModelIndex());
}

BookmarksWidget::BookmarksWidget(const QString &path, QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::BookmarksDialog)
{
    // make sure this dialog does not get deleted on close
    setAttribute(Qt::WA_DeleteOnClose, false);

    ui->setupUi(this);
    ui->bookmark_groupBox->setVisible(false);
    ui->folder_groupBox->setVisible(false);

    ui->addFolder_toolButton->setIcon(style()->standardPixmap(QStyle::SP_DirIcon));
    ui->addBookmark_toolButton->setIcon(style()->standardPixmap(QStyle::SP_FileIcon));
    ui->deleteItem_toolButton->setIcon(style()->standardPixmap(QStyle::SP_TrashIcon));
    ui->deleteItem_toolButton->setShortcut(QKeySequence::Delete);

    m_model = new BookmarkModel(this);
    m_bookmarksPath = path;
    loadModel(path, m_model, ui->treeView);

    // item activated
    connect(ui->treeView, &QTreeView::activated, this, [this](const QModelIndex &index) {
        if(index.column() == 1)
            emit openUrl(index.data(Qt::DisplayRole).toUrl());
        else
            editBookmark(index);
    });

    connect(ui->treeView, &QTreeView::expanded, this, [this](const QModelIndex &index) {
        m_model->setItemExpanded(index, true);
    });
    connect(ui->treeView, &QTreeView::collapsed, this, [this](const QModelIndex &index) {
        m_model->setItemExpanded(index, false);
    });

    ui->treeView->setContextMenuPolicy(Qt::CustomContextMenu);
    connect(ui->treeView, &QTreeView::customContextMenuRequested, this, [this](const QPoint &pos) {
        const QModelIndex idx = ui->treeView->indexAt(pos);
        if(idx.isValid()) {
            const QUrl url = m_model->data(idx, 1, Qt::DisplayRole).toUrl();
            const QPoint _pos = ui->treeView->viewport()->mapToGlobal(pos);

            emit showContextMenu(url, _pos);
        }
    });

    // addBookmark
    connect(ui->addBookmark_toolButton, &QToolButton::clicked, this, [this]() {
        const QModelIndex idx = m_model->parentFolder(ui->treeView->currentIndex());
        const QModelIndex childIdx = m_model->appendBookmark(tr("Title"), QString(), idx);
        ui->treeView->setCurrentIndex(childIdx);
        editBookmark(childIdx);
    });

    // addFolder
    connect(ui->addFolder_toolButton, &QToolButton::clicked, this, [this]() {
        const QModelIndex idx = m_model->parentFolder(ui->treeView->currentIndex());
        const QModelIndex childIdx = m_model->appendFolder(tr("Title"), idx);
        ui->treeView->setCurrentIndex(childIdx);
        editBookmark(childIdx);
    });

    // deleteItem
    connect(ui->deleteItem_toolButton, &QToolButton::clicked, this, [this]() {
        const QModelIndex idx = ui->treeView->currentIndex();
        m_model->removeRow(idx.row(), idx.parent());
    });

    // import button
    connect(ui->import_toolButton, &QToolButton::clicked, this, [this]() {
        const auto path = QFileDialog::getOpenFileName(this, tr("Open bookmarks file"), QDir::homePath(), tr("Firefox bookmarks backup (*.json)"));
        if(!path.isEmpty()) {
            loadModel(path, m_model, ui->treeView);
        }
    });
}

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

void BookmarksWidget::editBookmark(const QModelIndex &index)
{
    auto *dlg = new EditBookmarkDialog(m_model, index, this);
    dlg->exec();
}

void BookmarksWidget::save()
{
    if(!m_model->isModified())
        return;

    QFile bookmarksFile(m_bookmarksPath);
    if(bookmarksFile.open(QIODevice::WriteOnly | QIODevice::Text)) {
        BookmarkFormat<XbelFormat> f(&bookmarksFile);
        m_model >> f;
        bookmarksFile.flush();
    }
}

void BookmarksWidget::addBookmark(const QString &title, const QString &url)
{
    m_model->appendBookmark(title, url, QModelIndex());
}

void BookmarksWidget::search(const QString &term, const std::function<void(QStringList &)> &callback) const
{
    QStringList ret = m_model->search(term);
    callback(ret);
}