matrixion/src/LoginPage.cc

/*
 * nheko Copyright (C) 2017  Konstantinos Sideris <siderisk@auth.gr>
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

#include <QDebug>

#include "Config.h"
#include "InputValidator.h"
#include "LoginPage.h"

LoginPage::LoginPage(QSharedPointer<MatrixClient> client, QWidget *parent)
    : QWidget(parent)
    , inferredServerAddress_()
    , client_{client}
{
	setStyleSheet("background-color: #f9f9f9");

	top_layout_ = new QVBoxLayout();

	top_bar_layout_ = new QHBoxLayout();
	top_bar_layout_->setSpacing(0);
	top_bar_layout_->setMargin(0);

	back_button_ = new FlatButton(this);
	back_button_->setMinimumSize(QSize(30, 30));
	back_button_->setForegroundColor("#333333");

	top_bar_layout_->addWidget(back_button_, 0, Qt::AlignLeft | Qt::AlignVCenter);
	top_bar_layout_->addStretch(1);

	QIcon icon;
	icon.addFile(":/icons/icons/left-angle.png", QSize(), QIcon::Normal, QIcon::Off);

	back_button_->setIcon(icon);
	back_button_->setIconSize(QSize(24, 24));

	QIcon advanced_settings_icon;
	advanced_settings_icon.addFile(":/icons/icons/cog.png", QSize(), QIcon::Normal, QIcon::Off);

	logo_ = new QLabel(this);
	logo_->setPixmap(QPixmap(":/logos/nheko-128.png"));

	logo_layout_ = new QHBoxLayout();
	logo_layout_->setContentsMargins(0, 0, 0, 20);
	logo_layout_->addWidget(logo_, 0, Qt::AlignHCenter);

	form_wrapper_ = new QHBoxLayout();
	form_widget_ = new QWidget();
	form_widget_->setMinimumSize(QSize(350, 200));

	form_layout_ = new QVBoxLayout();
	form_layout_->setSpacing(20);
	form_layout_->setContentsMargins(0, 0, 0, 30);
	form_widget_->setLayout(form_layout_);

	form_wrapper_->addStretch(1);
	form_wrapper_->addWidget(form_widget_);
	form_wrapper_->addStretch(1);

	matrixid_input_ = new TextField(this);
	matrixid_input_->setTextColor("#333333");
	matrixid_input_->setLabel(tr("Matrix ID"));
	matrixid_input_->setInkColor("#555459");
	matrixid_input_->setBackgroundColor("#f9f9f9");
	matrixid_input_->setPlaceholderText(tr("e.g @joe:matrix.org"));

	spinner_ = new CircularProgress(this);
	spinner_->setColor("#acc7dc");
	spinner_->setSize(32);
	spinner_->setMaximumWidth(spinner_->width());
	spinner_->hide();

	errorIcon_ = new QLabel(this);
	errorIcon_->setPixmap(QPixmap(":/icons/icons/error.png"));
	errorIcon_->hide();

	matrixidLayout_ = new QHBoxLayout();
	matrixidLayout_->addWidget(matrixid_input_, 0, Qt::AlignVCenter);

	password_input_ = new TextField(this);
	password_input_->setTextColor("#333333");
	password_input_->setLabel(tr("Password"));
	password_input_->setInkColor("#555459");
	password_input_->setBackgroundColor("#f9f9f9");
	password_input_->setEchoMode(QLineEdit::Password);

	serverInput_ = new TextField(this);
	serverInput_->setTextColor("#333333");
	serverInput_->setLabel("Homeserver address");
	serverInput_->setInkColor("#555459");
	serverInput_->setBackgroundColor("#f9f9f9");
	serverInput_->setPlaceholderText("matrix.org");
	serverInput_->hide();

	serverLayout_ = new QHBoxLayout();
	serverLayout_->addWidget(serverInput_, 0, Qt::AlignVCenter);

	form_layout_->addLayout(matrixidLayout_);
	form_layout_->addWidget(password_input_, Qt::AlignHCenter, 0);
	form_layout_->addLayout(serverLayout_);

	button_layout_ = new QHBoxLayout();
	button_layout_->setSpacing(0);
	button_layout_->setContentsMargins(0, 0, 0, 30);

	login_button_ = new RaisedButton(tr("LOGIN"), this);
	login_button_->setBackgroundColor(QColor("#333333"));
	login_button_->setForegroundColor(QColor("white"));
	login_button_->setMinimumSize(350, 65);
	login_button_->setFontSize(20);
	login_button_->setCornerRadius(3);

	button_layout_->addStretch(1);
	button_layout_->addWidget(login_button_);
	button_layout_->addStretch(1);

	QFont font;
	font.setPixelSize(conf::fontSize);

	error_label_ = new QLabel(this);
	error_label_->setFont(font);
	error_label_->setStyleSheet("color: #E22826");

	top_layout_->addLayout(top_bar_layout_);
	top_layout_->addStretch(1);
	top_layout_->addLayout(logo_layout_);
	top_layout_->addLayout(form_wrapper_);
	top_layout_->addStretch(1);
	top_layout_->addLayout(button_layout_);
	top_layout_->addWidget(error_label_, 0, Qt::AlignHCenter);
	top_layout_->addStretch(1);

	setLayout(top_layout_);

	connect(back_button_, SIGNAL(clicked()), this, SLOT(onBackButtonClicked()));
	connect(login_button_, SIGNAL(clicked()), this, SLOT(onLoginButtonClicked()));
	connect(matrixid_input_, SIGNAL(returnPressed()), login_button_, SLOT(click()));
	connect(password_input_, SIGNAL(returnPressed()), login_button_, SLOT(click()));
	connect(serverInput_, SIGNAL(returnPressed()), login_button_, SLOT(click()));
	connect(client_.data(), SIGNAL(loginError(QString)), this, SLOT(loginError(QString)));
	connect(matrixid_input_, SIGNAL(editingFinished()), this, SLOT(onMatrixIdEntered()));
	connect(client_.data(), SIGNAL(versionError(QString)), this, SLOT(versionError(QString)));
	connect(client_.data(), SIGNAL(versionSuccess()), this, SLOT(versionSuccess()));
	connect(serverInput_, SIGNAL(editingFinished()), this, SLOT(onServerAddressEntered()));

	matrixid_input_->setValidator(&InputValidator::Id);
}

void LoginPage::loginError(QString error)
{
	error_label_->setText(error);
}

void LoginPage::onMatrixIdEntered()
{
	error_label_->setText("");

	if (!matrixid_input_->hasAcceptableInput()) {
		loginError(tr("Invalid Matrix ID"));
		return;
	} else if (password_input_->text().isEmpty()) {
		loginError(tr("Empty password"));
	}

	QString homeServer = matrixid_input_->text().split(":").at(1);
	if (homeServer != inferredServerAddress_) {
		serverInput_->hide();
		serverLayout_->removeWidget(errorIcon_);
		errorIcon_->hide();
		if (serverInput_->isVisible()) {
			matrixidLayout_->removeWidget(spinner_);
			serverLayout_->addWidget(spinner_, 0, Qt::AlignVCenter | Qt::AlignRight);
			spinner_->show();
		} else {
			serverLayout_->removeWidget(spinner_);
			matrixidLayout_->addWidget(spinner_, 0, Qt::AlignVCenter | Qt::AlignRight);
			spinner_->show();
		}

		inferredServerAddress_ = homeServer;
		serverInput_->setText(homeServer);
		client_->setServer(homeServer);
		client_->versions();
	}
}

void LoginPage::onServerAddressEntered()
{
	error_label_->setText("");
	client_->setServer(serverInput_->text());
	client_->versions();

	serverLayout_->removeWidget(errorIcon_);
	errorIcon_->hide();
	serverLayout_->addWidget(spinner_, 0, Qt::AlignVCenter | Qt::AlignRight);
	spinner_->show();
}

void LoginPage::versionError(QString error)
{
	// Matrix homeservers are often kept on a subdomain called 'matrix'
	// so let's try that next, unless the address was set explicitly or the domain part of the username already points to this subdomain
	QUrl currentServer = client_->getHomeServer();
	QString mxidAddress = matrixid_input_->text().split(":").at(1);
	if (currentServer.host() == inferredServerAddress_ && !currentServer.host().startsWith("matrix")) {
		error_label_->setText("");
		currentServer.setHost(QString("matrix.") + currentServer.host());
		serverInput_->setText(currentServer.host());
		client_->setServer(currentServer.host());
		client_->versions();
		return;
	}

	error_label_->setText(error);
	serverInput_->show();

	spinner_->hide();
	serverLayout_->removeWidget(spinner_);
	serverLayout_->addWidget(errorIcon_, 0, Qt::AlignVCenter | Qt::AlignRight);
	errorIcon_->show();
	matrixidLayout_->removeWidget(spinner_);
}

void LoginPage::versionSuccess()
{
	serverLayout_->removeWidget(spinner_);
	matrixidLayout_->removeWidget(spinner_);
	spinner_->hide();

	if (serverInput_->isVisible())
		serverInput_->hide();
}

void LoginPage::onLoginButtonClicked()
{
	error_label_->setText("");

	if (!matrixid_input_->hasAcceptableInput()) {
		loginError("Invalid Matrix ID");
	} else if (password_input_->text().isEmpty()) {
		loginError("Empty password");
	} else {
		QString user = matrixid_input_->text().split(":").at(0).split("@").at(1);
		QString password = password_input_->text();
		client_->setServer(serverInput_->text());
		client_->login(user, password);
	}
}

void LoginPage::reset()
{
	matrixid_input_->clear();
	password_input_->clear();
	serverInput_->clear();

	spinner_->hide();
	errorIcon_->hide();
	serverLayout_->removeWidget(spinner_);
	serverLayout_->removeWidget(errorIcon_);
	matrixidLayout_->removeWidget(spinner_);

	inferredServerAddress_.clear();
}

void LoginPage::onBackButtonClicked()
{
	emit backButtonClicked();
}

LoginPage::~LoginPage()
{
}