#include "ServicesDialog.h"
#include "ServiceWidget.h"
#include "Configurator.h"
#include "HelpBrowser.h"

#include <QWebEngineView>
#include <QWebEngineHttpRequest>
#include <QMessageBox>
#include <QUrlQuery>
#include <QScrollBar>
#include <QDir>

#include <iostream>

ServicesDialog::ServicesDialog(QWidget *parent):QDialog(parent),_layout(this) {
	int y = 0;
	_welcome = new QLabel(tr("Welcome to your Federated Computer\n"
				"We can automatically configure these services for you:"), this);
	_layout.addWidget(_welcome, y, 0);
	_knownServicesScroller = new QScrollArea(this);
	_knownServices = new QWidget(this);
	QBoxLayout *ksLayout = new QBoxLayout(QBoxLayout::TopToBottom, _knownServices);
	_layout.addWidget(_knownServicesScroller, ++y, 0);
	_usLabel = new QLabel(tr("Your subscription also includes the following services, which can not currently be auto-configured, but you can configure them manually:"), this);
	_layout.addWidget(_usLabel, ++y, 0);
	_unknownServicesScroller = new QScrollArea(this);
	_unknownServices = new QWidget(this);
	QBoxLayout *usLayout = new QBoxLayout(QBoxLayout::TopToBottom, _unknownServices);
	_layout.addWidget(_unknownServicesScroller, ++y, 0);
	int k = 0, u = 0;
	for(auto i : app->services()) {
		ServiceWidget *w;
		if(i.title == "Nextcloud" || i.title == "Panel") {
			w=new ServiceWidget(i, _knownServices);
			ksLayout->addWidget(w, ++k);
		} else {
			w=new ServiceWidget(i, _unknownServices);
			usLayout->addWidget(w, ++u);
		}
		connect(w, &ServiceWidget::goClicked, this, &ServicesDialog::configureService);
		connect(w, &ServiceWidget::helpClicked, this, &ServicesDialog::serviceHelp);
	}
	_knownServicesScroller->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
	_unknownServicesScroller->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
	_knownServicesScroller->setWidget(_knownServices);
	_unknownServicesScroller->setWidget(_unknownServices);
	_buttons = new ButtonRow(this);
	QPushButton *ok = new QPushButton(tr("&OK"), _buttons);
	connect(ok, &QPushButton::clicked, this, &QDialog::accept);
	ok->setDefault(true);
	QPushButton *cancel = new QPushButton(tr("&Cancel"), _buttons);
	connect(cancel, &QPushButton::clicked, this, &QDialog::reject);
	_buttons->add(ok);
	_buttons->add(cancel);
	_layout.addWidget(_buttons, ++y, 0);
	resizeEvent(0);
}

void ServicesDialog::configureService() {
	ServiceWidget *w=qobject_cast<ServiceWidget*>(sender());
	if(!w)
		return;

	Service const &s = w->service();
	if(s.title == "Nextcloud") {
		QSettings ncSettings(QDir::homePath() + "/.config/Nextcloud/nextcloud.cfg", QSettings::IniFormat, this);
		ncSettings.beginGroup("Accounts");
		int numAccounts = -1;
		int ourAccount = -1;
		for(QString &g : ncSettings.childGroups()) {
			ncSettings.beginGroup(g);
			if(!ncSettings.contains("url")) {
				ncSettings.endGroup();
				continue;
			}
			if(QUrl(ncSettings.value("url").toString()) == s.url && ncSettings.value("webflow_user") == app->user()) {
				// This user is already configured -- update existing config
				// rather than creating a new one
				ourAccount = g.toInt();
				ncSettings.endGroup();
				break;
			}
			numAccounts = std::max(numAccounts, g.toInt());
			ncSettings.endGroup();
		}
		if(ourAccount >= 0) {
			if(QMessageBox::question(this, tr("Nextcloud"), tr("This account seems to be configured in your Nextcloud client already. Do you want to overwrite the existing configuration?")) == QMessageBox::No)
				return;
		} else {
			ourAccount = numAccounts+1;
		}
		ncSettings.beginGroup(QString::number(ourAccount));
		ncSettings.setValue("authType", "webflow");
		ncSettings.setValue("dav_user", app->user().section('@', 0, 1));
		ncSettings.setValue("displayName", app->user().section('@', 0, 1));
		ncSettings.setValue("webflow_user", app->user());
		ncSettings.setValue("url", s.url.toString());
		ncSettings.setValue("version", 1);
		ncSettings.endGroup();
		ncSettings.endGroup();
	} else if(s.title == "Panel") {
		QWebEngineView *v = new QWebEngineView(static_cast<QWidget*>(nullptr));
		QWebEngineHttpRequest req = QWebEngineHttpRequest::postRequest(s.url, {
				{"user_id", app->user()},
				{"password", app->password()}
			});
		v->load(req);
		v->show();
	} else {
		QWebEngineView *v = new QWebEngineView(static_cast<QWidget*>(nullptr));
		v->load(s.url);
		v->show();
	}
}

void ServicesDialog::serviceHelp() {
	ServiceWidget *w=qobject_cast<ServiceWidget*>(sender());
	if(!w)
		return;

	Service const &s = w->service();
	HelpBrowser *viewer = new HelpBrowser(s.documentationUrl);
	viewer->setWindowIcon(s.pixmap());
	viewer->setWindowTitle(QString("%1 help").arg(s.title));
	viewer->show();
}

void ServicesDialog::resizeEvent(QResizeEvent *e) {
	// Make sure the known services and unknown services
	// lists always use the full width available
	if(e)
		QDialog::resizeEvent(e);

	int const w = _knownServicesScroller->width();
	_knownServices->setFixedWidth(w);
	_unknownServices->setFixedWidth(w);
}