/*
    Copyright (C) 2004 Teemu Rytilahti <tpr@d5k.net>
    Copyright (C) 2005 George Staikos <staikos@kde.org>

    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.

    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, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

    As a special exception, permission is given to link this program
    with any edition of Qt, and distribute the resulting executable,
    without including the source code for Qt in the source distribution.
*/

#include "konqmficon.h"

#include <kdebug.h>
#include <kpluginfactory.h>
#include <kiconloader.h>
#include <kparts/statusbarextension.h>
#include <kstandarddirs.h>
#include <kstatusbar.h>
#include <kurllabel.h>

#include <qcursor.h>
#include <q3stylesheet.h>
#include <qtimer.h>
#include <qtooltip.h>
#include <QPixmap>
#include <QList>

K_PLUGIN_FACTORY(KonqMFIconFactory, registerPlugin<KonqMFIcon>();)
K_EXPORT_PLUGIN(KonqMFIconFactory("mfkonqmficon"))


KonqMFIcon::KonqMFIcon(QObject *parent, const QVariantList &)
: KParts::Plugin(parent), PluginBase(), m_part(0), m_mfIcon(0), m_statusBarEx(0), m_menu(0) {
	KGlobal::locale()->insertCatalog("mf_konqplugin");

	m_part = qobject_cast<KHTMLPart*>(parent);
	if (!m_part) {
		kDebug() << "couldn't get part";
		return;
	}
	QTimer::singleShot(0, this, SLOT(waitPartToLoad()));
}


void KonqMFIcon::waitPartToLoad() {
	connect(m_part, SIGNAL(completed()), this, SLOT(addMFIcon()));
	connect(m_part, SIGNAL(completed(bool)), this, SLOT(addMFIcon())); // to make pages with metarefresh to work
	connect(m_part, SIGNAL(started(KIO::Job *)), this, SLOT(removeMFIcon()));
}


KonqMFIcon::~KonqMFIcon() {
	KGlobal::locale()->removeCatalog("mf_konqplugin");
	delete m_menu;
	m_menu = 0L;
}


static QString textForNode(const DOM::Node &node) {
	QString rc;
	DOM::NodeList nl = node.childNodes();
	for (unsigned int i = 0; i < nl.length(); ++i) {
		DOM::Node n = nl.item(i);
		if (n.nodeType() == DOM::Node::TEXT_NODE) {
			rc += n.nodeValue().string();
		}
	}
	// FIXME: entries need to be escaped for vcard/vevent
	return rc.trimmed();
}


static QString textForNodeRec(const DOM::Node &node) {
	QString rc;
	DOM::NodeList nl = node.childNodes();
	for (unsigned int i = 0; i < nl.length(); ++i) {
		DOM::Node n = nl.item(i);
		if (n.nodeType() == DOM::Node::TEXT_NODE) {
			rc += n.nodeValue().string();
		} else if (n.nodeType() == DOM::Node::ELEMENT_NODE) {
			rc += textForNodeRec(n);
		}
	}
	// FIXME: entries need to be escaped for vcard/vevent
	return rc.trimmed();
}


static QString extractAddress(const DOM::Node &node) {
	QString rc = ";;";
	QMap<QString,QString> entry;
	DOM::NodeList nodes = node.childNodes();
	unsigned int n = nodes.length();
	for (unsigned int i = 0; i < n; ++i) {
		DOM::Node node = nodes.item(i);
		DOM::NamedNodeMap map = node.attributes();
		for (unsigned int j = 0; j < map.length(); ++j) {
			if (map.item(j).nodeName().string() != "class") {
				continue;
			}
			QString a = map.item(j).nodeValue().string();
			if (a == "street-address") {
				entry["street-address"] = textForNode(node);
			} else if (a == "locality") {
				entry["locality"] = textForNode(node);
			} else if (a == "region") {
				entry["region"] = textForNode(node);
			} else if (a == "postal-code") {
				entry["postal-code"] = textForNode(node);
			}
		}
	}

	rc += entry["street-address"] + ';' + entry["locality"] + ';' + entry["region"] + ';' + entry["postal-code"] + ';' + entry["country"];
	return rc.trimmed();
}


void KonqMFIcon::extractCard(const DOM::Node &node) {
	QString name, value;
	DOM::NodeList nodes = node.childNodes();
	unsigned int n = nodes.length();
	value += "BEGIN:VCARD\nVERSION:3.0\n";
	for (unsigned int i = 0; i < n; ++i) {
		DOM::Node node = nodes.item(i);
		DOM::NamedNodeMap map = node.attributes();
		for (unsigned int j = 0; j < map.length(); ++j) {
			if (map.item(j).nodeName().string() != "class") {
				continue;
			}
			QStringList l = map.item(j).nodeValue().string().split(' ',QString::SkipEmptyParts);
			for (QStringList::ConstIterator it = l.constBegin(); it != l.constEnd(); ++it) {
				if (*it == "photo") {
				} else if (*it == "adr") {
					value += "ADR:" + extractAddress(node) + '\n';
				} else if (*it == "tel") {
					value += "TEL;TYPE=VOICE:" + textForNode(node) + '\n';
				} else if (-1 < QRegExp("\\b(fn)\\b").indexIn(*it)) {
					name = textForNodeRec(node);
					value += "FN:" + name + '\n';
				} else if (-1 < QRegExp("\\b(url)\\b").indexIn(*it)) {
					DOM::Node at = node.attributes().getNamedItem("href");
					if (!at.isNull()) {
						value += "URL:" + at.nodeValue().string().trimmed() + '\n';
					}
				} else if (*it == "email") {
					DOM::Node at = node.attributes().getNamedItem("href");
					if (!at.isNull()) {
						QString v = at.nodeValue().string();
						if (v.startsWith("mailto:")) {
							v = v.mid(7);
						}
						value += "EMAIL:" + v.trimmed() + '\n';
					}
				} else if (*it == "org") {
					value += "ORG:" + textForNode(node) + '\n';
				}
			}
		}
	}

	if (!name.isEmpty()) {
		value += "END:VCARD\n";
		_cards.append(qMakePair(name, value));
	}
}


void KonqMFIcon::extractEvent(const DOM::Node &node) {
	QString name, value = "BEGIN:VCALENDAR\nPRODID:-//Konqueror//EN\nVERSION:2.0\nBEGIN:VEVENT\n";
	DOM::NodeList nodes = node.childNodes();
	unsigned int n = nodes.length();
	for (unsigned int i = 0; i < n; ++i) {
		DOM::Node node = nodes.item(i);
		DOM::NamedNodeMap map = node.attributes();
		for (unsigned int j = 0; j < map.length(); ++j) {
			if (map.item(j).nodeName().string() != "class") {
				continue;
			}
			QStringList l = map.item(j).nodeValue().string().split(' ',QString::SkipEmptyParts);
			for (QStringList::ConstIterator it = l.constBegin(); it != l.constEnd(); ++it) {
				if (*it == "url") {
					DOM::Node at = node.attributes().getNamedItem("href");
					if (!at.isNull()) {
						value += "URL:" + at.nodeValue().string().trimmed() + '\n';
					}
				} else if (*it == "dtstart") {
					DOM::Node at = node.attributes().getNamedItem("title");
					if (!at.isNull()) {
						value += "DTSTART:" + at.nodeValue().string().trimmed() + '\n';
					}
				} else if (*it == "dtend") {
					DOM::Node at = node.attributes().getNamedItem("title");
					if (!at.isNull()) {
						value += "DTEND:" + at.nodeValue().string().trimmed() + '\n';
					}
				} else if (*it == "summary") {
					name = textForNode(node);
					value += "SUMMARY:" + name + '\n';
				} else if (*it == "location") {
					value += "LOCATION:" + textForNode(node) + '\n';
				}
			}
		}
	}

	if (!name.isEmpty()) {
		value += "END:VEVENT\nEND:VCALENDAR\n";
		_events.append(qMakePair(name, value));
	}
}


bool KonqMFIcon::hasMicroFormat(const DOM::NodeList &nodes) {
	bool ok = false;
	unsigned int n = nodes.length();
	for (unsigned int i = 0; i < n; ++i) {
		DOM::Node node = nodes.item(i);
		DOM::NamedNodeMap map = node.attributes();
		for (unsigned int j = 0; j < map.length(); ++j) {
			if (map.item(j).nodeName().string() != "class") {
				continue;
			}
			QString nodeValue(map.item(j).nodeValue().string());
			if (nodeValue == "vevent") {
				ok = true;
				extractEvent(node);
				break;
			}
			if (-1 < QRegExp("\\b(vcard)\\b").indexIn(nodeValue)) {
				ok = true;
				extractCard(node);
				break;
			}
		}
		if (hasMicroFormat(node.childNodes())) {
			ok = true;
		}
	}
	return ok;
}


bool KonqMFIcon::mfFound() {
	_events.clear();
	_cards.clear();
	return hasMicroFormat(m_part->document().childNodes());
}


void KonqMFIcon::contextMenu() {
	delete m_menu;
	m_menu = new KMenu(m_part->widget());
	m_menu->addTitle(i18n("Microformats"));
	int id = 0;
	QAction *action = 0;
	for (QList<QPair<QString, QString> >::ConstIterator it = _events.constBegin(); it != _events.constEnd(); ++it) {
		action = m_menu->addAction(KIcon("bookmark-new"), (*it).first, this, SLOT(addMF()));
		action->setData(qVariantFromValue(id));
		id++;
	}
	for (QList<QPair<QString, QString> >::ConstIterator it = _cards.constBegin(); it != _cards.constEnd(); ++it) {
		action = m_menu->addAction(KIcon("bookmark-new"), (*it).first, this, SLOT(addMF()));
		action->setData(qVariantFromValue(id));
		id++;
	}
	m_menu->addSeparator();
	m_menu->addAction(KIcon("bookmark-new"), i18n("Import All Microformats"), this, SLOT(addMFs()));
	m_menu->popup(QCursor::pos());
}


void KonqMFIcon::addMFIcon() {
	if (!mfFound() || m_mfIcon) {
		return;
	}

	m_statusBarEx = KParts::StatusBarExtension::childObject(m_part);
	if (!m_statusBarEx) {
		return;
	}

	m_mfIcon = new KUrlLabel(m_statusBarEx->statusBar());
	m_mfIcon->setFixedHeight( KIconLoader::global()->currentSize(KIconLoader::Small));
	m_mfIcon->setSizePolicy(QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed));
	m_mfIcon->setUseCursor(false);
	//FIXME hackish
	m_mfIcon->setPixmap(QPixmap(KStandardDirs::locate("data", "microformat/pics/microformat.png")));

	m_mfIcon->setToolTip( i18np("This site has a microformat entry", "This site has %1 microformat entries", _events.count() + _cards.count()));

	m_statusBarEx->addStatusBarItem(m_mfIcon, 0, true);

	connect(m_mfIcon, SIGNAL(leftClickedUrl()), this, SLOT(contextMenu()));
}


void KonqMFIcon::removeMFIcon() {
	_events.clear();
	_cards.clear();
	if (m_mfIcon) {
		m_statusBarEx->removeStatusBarItem(m_mfIcon);
		delete m_mfIcon;
		m_mfIcon = 0;
	}

	// Close the popup if it's open, otherwise we crash
	delete m_menu;
	m_menu = 0L;
}


void KonqMFIcon::addMF() {
	bool ok = false;
	int id = sender() ? qobject_cast<QAction *>(sender())->data().toInt(&ok) : -1;
	if (!ok || id < 0) {
		return;
	}
	addMF(id);
}

void KonqMFIcon::addMF(int id) {
	if (id < int(_events.count())) {
	} else if (id < int(_cards.count())) {
		id -= _cards.count() - 1;
		addVCardViaDCOP(_cards[id].second);
	}
}


void KonqMFIcon::addMFs() {
	int n = _events.count() + _cards.count();
	for (int i = 0; i < n; ++i) {
		addMF(i);
	}
}

#include "konqmficon.moc"
