/*
 * 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 <QToolTip>

#include "Config.h"
#include "InputValidator.h"
#include "RegisterPage.h"

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

	top_layout_ = new QVBoxLayout();

	back_layout_ = new QHBoxLayout();
	back_layout_->setSpacing(0);
	back_layout_->setContentsMargins(5, 5, -1, -1);

	back_button_ = new FlatButton(this);
	back_button_->setMinimumSize(QSize(30, 30));

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

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

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

	logo_ = new Avatar(this);
	logo_->setImage(QImage(":/logos/nheko-128.png"));
	logo_->setSize(80);

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

	form_wrapper_ = new QHBoxLayout();
	form_widget_ = new QWidget();
	form_widget_->setMinimumSize(QSize(350, 300));

	form_layout_ = new QVBoxLayout();
	form_layout_->setSpacing(20);
	form_layout_->setContentsMargins(0, 0, 0, 40);
	form_widget_->setLayout(form_layout_);

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

	username_input_ = new TextField();
	username_input_->setTextColor("#333333");
	username_input_->setLabel(tr("Username"));
	username_input_->setInkColor("#555459");
	username_input_->setBackgroundColor("#f9f9f9");

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

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

	server_input_ = new TextField();
	server_input_->setTextColor("#333333");
	server_input_->setLabel(tr("Home Server"));
	server_input_->setInkColor("#555459");
	server_input_->setBackgroundColor("#f9f9f9");

	form_layout_->addWidget(username_input_, Qt::AlignHCenter, 0);
	form_layout_->addWidget(password_input_, Qt::AlignHCenter, 0);
	form_layout_->addWidget(password_confirmation_, Qt::AlignHCenter, 0);
	form_layout_->addWidget(server_input_, Qt::AlignHCenter, 0);

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

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

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

	register_button_ = new RaisedButton(tr("REGISTER"), this);
	register_button_->setBackgroundColor(QColor("#333333"));
	register_button_->setForegroundColor(QColor("white"));
	register_button_->setMinimumSize(350, 65);
	register_button_->setFontSize(conf::btn::fontSize);
	register_button_->setCornerRadius(conf::btn::cornerRadius);

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

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

	connect(back_button_, SIGNAL(clicked()), this, SLOT(onBackButtonClicked()));
	connect(register_button_, SIGNAL(clicked()), this, SLOT(onRegisterButtonClicked()));

	connect(username_input_, SIGNAL(returnPressed()), register_button_, SLOT(click()));
	connect(password_input_, SIGNAL(returnPressed()), register_button_, SLOT(click()));
	connect(password_confirmation_, SIGNAL(returnPressed()), register_button_, SLOT(click()));
	connect(server_input_, SIGNAL(returnPressed()), register_button_, SLOT(click()));
	connect(client_.data(), SIGNAL(registerError(const QString &)), this, SLOT(registerError(const QString &)));

	username_input_->setValidator(&InputValidator::Localpart);
	password_input_->setValidator(&InputValidator::Password);
	server_input_->setValidator(&InputValidator::Domain);

	setLayout(top_layout_);
}

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

void RegisterPage::registerError(const QString &msg)
{
	error_label_->setText(msg);
}

void RegisterPage::onRegisterButtonClicked()
{
	error_label_->setText("");

	if (!username_input_->hasAcceptableInput()) {
		registerError(tr("Invalid username"));
	} else if (!password_input_->hasAcceptableInput()) {
		registerError(tr("Password is not long enough (min 8 chars)"));
	} else if (password_input_->text() != password_confirmation_->text()) {
		registerError(tr("Passwords don't match"));
	} else if (!server_input_->hasAcceptableInput()) {
		registerError(tr("Invalid server name"));
	} else {
		QString username = username_input_->text();
		QString password = password_input_->text();
		QString server = server_input_->text();

		client_->registerUser(username, password, server);
	}
}

RegisterPage::~RegisterPage()
{
}