/***************************************************************************
                          showedittextfileagent  -  description
                             -------------------
    begin                : Tue Sep 13 2005
    copyright            : (C) 2005-2016 by Thomas Friedrichsmeier
    email                : thomas.friedrichsmeier@kdemail.net
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#include "showedittextfileagent.h"

#include <KLocalizedString>
#include <KMessageWidget>

#include "../windows/rkcommandeditorwindow.h"
#include "../rbackend/rkrinterface.h"
#include "../rbackend/rkrbackendprotocol_frontend.h"
#include "../windows/rkworkplace.h"
#include "../rkglobals.h"
#include "../rkward.h"

#include "../debug.h"

ShowEditTextFileAgent::ShowEditTextFileAgent (RBackendRequest *request, const QString &text, const QString &caption) : QObject (RKWardMainWindow::getMain ()) {
	RK_TRACE (APP);

	ShowEditTextFileAgent::request = request;

	message = new KMessageWidget (0);
	message->setText (QString ("<p><strong>%1<strong></p><p>%2</p>").arg (caption).arg (text));
	if (request) {
		message->setCloseButtonVisible (false);
		QAction *done_action = new QAction (QIcon::fromTheme ("dialog-ok"), i18n ("Done"), message);
		connect (done_action, &QAction::triggered, this, &QObject::deleteLater);
		message->addAction (done_action);
		message->setMessageType (KMessageWidget::Warning);  // Hm, not really a warning, but it _does_ require user attention, as the R engine is blocked until "Done" is clicked.
	} else {
		connect (message, &KMessageWidget::hideAnimationFinished, this, &QObject::deleteLater);
		message->setMessageType (KMessageWidget::Information);
	}

	RKWorkplace::mainWorkplace ()->addMessageWidget (message);
}


ShowEditTextFileAgent::~ShowEditTextFileAgent () {
	RK_TRACE (APP);

	if (request) RKRBackendProtocolFrontend::setRequestCompleted (request);
	message->deleteLater ();
}

// static
void ShowEditTextFileAgent::showEditFiles (RBackendRequest *request) {
	RK_TRACE (APP);
	if (!request) return;

	QStringList files = request->params["files"].toStringList ();
	QStringList titles = request->params["titles"].toStringList ();
	QString wtitle = request->params["wtitle"].toString ();
	bool prompt = request->params["prompt"].toBool ();
	int count = files.count ();
	RK_ASSERT (titles.count () == count);

	QStringList display_titles;
	for (int n = 0; n < count; ++n) {
		QString title;
		if (!titles[n].isEmpty ()) title = titles[n];
		else if (count > 1) title = files[n];
		if (!wtitle.isEmpty ()) {
			if (!title.isEmpty ()) title.prepend (": ");
			title.prepend (wtitle);
		}
		display_titles.append (title);
	}

	int flags = RKCommandEditorFlags::ReadOnly;
	if (request->type == RBackendRequest::ShowFiles) {
		RK_ASSERT (!request->synchronous);

		if (request->params["delete"].toBool ()) flags +=  RKCommandEditorFlags::DeleteOnClose;
		RKRBackendProtocolFrontend::setRequestCompleted (request);

		if (prompt) {
			new ShowEditTextFileAgent (0, i18n ("A command running in the R-engine wants you to see the following file(s):<ul><li>") + display_titles.join ("</li></li>") + "</li></ul>", i18n ("Showing file(s)"));
		}
	} else if (request->type == RBackendRequest::EditFiles) {
		if (prompt) {
			new ShowEditTextFileAgent (request, i18n ("A command running in the R-engine wants you to edit the following file(s). Please look at these files, edit them as appropriate, and save them. When done, press the \"Done\"-button, or close this dialog to resume.<ul><li>") + display_titles.join ("</li></li>") + "</li></ul>", i18n ("Edit file(s)"));
		} else {
			RKRBackendProtocolFrontend::setRequestCompleted (request);
		}

		flags += RKCommandEditorFlags::DefaultToRHighlighting;
		flags -= RKCommandEditorFlags::ReadOnly;
	} else {
		RK_ASSERT (false);
	}

	// do this last, as it may produce error messages, if some of the files could not be opened.
	for (int n = 0; n < count; ++n) {
		RKWorkplace::mainWorkplace ()->openScriptEditor (QUrl::fromLocalFile (files[n]), QString (), flags, display_titles[n]);
	}
}
