/***************************************************************************
 *   This file is part of the Lime Report project                          *
 *   Copyright (C) 2015 by Alexander Arin                                  *
 *   arin_a@bk.ru                                                          *
 *                                                                         *
 **                   GNU General Public License Usage                    **
 *                                                                         *
 *   This library 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.                                   *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
 *                                                                         *
 **                  GNU Lesser General Public License                    **
 *                                                                         *
 *   This library is free software: you can redistribute it and/or modify  *
 *   it under the terms of the GNU Lesser General Public License as        *
 *   published by the Free Software Foundation, either version 3 of the    *
 *   License, or (at your option) any later version.                       *
 *   You should have received a copy of the GNU Lesser General Public      *
 *   License along with this library.                                      *
 *   If not, see <http://www.gnu.org/licenses/>.                           *
 *                                                                         *
 *   This library 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.                          *
 ****************************************************************************/
#include "lrscriptbrowser.h"
#include "ui_lrscriptbrowser.h"

#ifdef HAVE_UI_LOADER
#include <QFileDialog>
#include <QUiLoader>
#endif
#include <QMessageBox>

namespace LimeReport{

ScriptBrowser::ScriptBrowser(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::ScriptBrowser)
{
    ui->setupUi(this);
#ifndef HAVE_UI_LOADER
    ui->tpDialogs->setVisible(false);
    ui->tabWidget->removeTab(ui->tabWidget->indexOf(ui->tpDialogs));
#endif
}

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

void ScriptBrowser::setReportEditor(ReportDesignWidget* report)
{
    m_report=report;
    connect(m_report,SIGNAL(cleared()),this,SLOT(slotClear()));
    connect(m_report,SIGNAL(loaded()),this,SLOT(slotUpdate()));
#ifdef HAVE_UI_LOADER
    connect(m_report->scriptContext(), SIGNAL(dialogAdded(QString)), this, SLOT(slotDialogAdded(QString)));
#endif
    updateFunctionTree();
}

void ScriptBrowser::updateFunctionTree()
{
    ui->twFunctions->clear();
    ScriptEngineManager* sm = reportEditor()->scriptManager();
    QMap<QString,QTreeWidgetItem*> categ;
    foreach(ScriptFunctionDesc fd, sm->functionsDescribers()){
        QString functionCategory = (fd.category!="") ? fd.category : tr("NO CATEGORY");
        if (categ.contains(functionCategory)){
            QTreeWidgetItem* item = new QTreeWidgetItem(categ.value(fd.category),QStringList(fd.name));
            item->setIcon(0,QIcon(":/report/images/function"));
        } else {
            QTreeWidgetItem* categItem = new QTreeWidgetItem(ui->twFunctions,QStringList(functionCategory));
            categItem->setIcon(0,QIcon(":/report/images/folder"));
            categ.insert(functionCategory,categItem);
            QTreeWidgetItem* item = new QTreeWidgetItem(categItem,QStringList(fd.name));
            item->setIcon(0,QIcon(":/report/images/function"));
        }
    }
}

#ifdef HAVE_UI_LOADER
void ScriptBrowser::fillProperties(QTreeWidgetItem* objectItem, QObject* item){
    for(int i=0; i<item->metaObject()->propertyCount(); ++i){
        QStringList row;
        row<<item->metaObject()->property(i).typeName()<<item->metaObject()->property(i).name();
        /*QTreeWidgetItem* propItem = */new QTreeWidgetItem(objectItem,row);
    }
}

void ScriptBrowser::fillDialog(QTreeWidgetItem* dialogItem,const QString& description){

    QUiLoader loader;
    QByteArray baDesc = description.toUtf8();
    QBuffer buff(&baDesc);
    buff.open(QIODevice::ReadOnly);
    QDialog* dialog = dynamic_cast<QDialog*>(loader.load(&buff));
    if (dialog){
        foreach (QObject* child, dialog->children()) {
            if (!child->objectName().isEmpty()){
                QStringList row;
                row<<child->metaObject()->className()<<child->objectName();
                QTreeWidgetItem* item = new QTreeWidgetItem(dialogItem,row);
                item->setIcon(0,QIcon(":/scriptbrowser/images/item"));
                fillProperties(item,child);
            }
        }
        delete dialog;
    }

}

void ScriptBrowser::updateDialogsTree()
{
    ui->twDialogs->clear();
    ScriptEngineContext* sc = reportEditor()->scriptContext();
    foreach(DialogDescriber::Ptr dc, sc->dialogDescribers()){
        QTreeWidgetItem* dialogItem = new QTreeWidgetItem(ui->twDialogs,QStringList(dc->name()));
        dialogItem->setIcon(0,QIcon(":/scriptbrowser/images/dialog"));
        fillDialog(dialogItem,dc->description());
    }
}
#endif
void ScriptBrowser::slotClear()
{
    ui->twDialogs->clear();
    ui->twFunctions->clear();
}

void ScriptBrowser::slotUpdate()
{
#ifdef HAVE_UI_LOADER
    updateDialogsTree();
#endif
    updateFunctionTree();
}

#ifdef HAVE_UI_LOADER

void ScriptBrowser::slotDialogAdded(QString)
{
    updateDialogsTree();
}

void ScriptBrowser::on_tbAddDialog_clicked()
{
    QFileDialog fileDialog(this);
    if (fileDialog.exec()==QDialog::Accepted){
        QStringList fileNames = fileDialog.selectedFiles();
        QUiLoader loader;

        if (!fileNames.isEmpty()){
            foreach (QString fileName, fileNames) {
                QFile file(fileName);
                file.open(QIODevice::ReadOnly);
                if (file.isOpen()){
                    QWidget* widget = loader.load(&file);
                    QDialog* dialog = dynamic_cast<QDialog*>(widget);
                    if (dialog){
                        if (!m_report->scriptContext()->containsDialog(dialog->objectName())){
                            file.seek(0);
                            m_report->scriptContext()->addDialog(dialog->objectName(),file.readAll());
                            //updateDialogsTree();
                        } else {
                            QMessageBox::critical(this,tr("Error"),tr("Dialog with name: %1 already exists").arg(dialog->objectName()));
                        }
                    } else {
                        if (widget)
                            QMessageBox::critical(this,tr("Error"),tr("ui file must cointain QDialog instead QWidget or QMainWindow"));
                        else
                            QMessageBox::critical(this,tr("Error"),tr("wrong file format"));
                    }
                    if (widget) delete widget;
                }
            }
        }
    }
}

void ScriptBrowser::on_tbRunDialog_clicked()
{
    if (ui->twDialogs->currentItem()&& ui->twDialogs->currentItem()->parent()==0){
        m_report->scriptContext()->previewDialog(ui->twDialogs->currentItem()->text(0));
    }
}

void ScriptBrowser::on_tbDeleteDialog_clicked()
{
    if (ui->twDialogs->currentItem()&& ui->twDialogs->currentItem()->parent()==0){
        m_report->scriptContext()->deleteDialog(ui->twDialogs->currentItem()->text(0));
        updateDialogsTree();
    }
}

#endif

} //namespace LimeReport