// SPDX-FileCopyrightText: 2017 Konstantinos Sideris <siderisk@auth.gr>
// SPDX-FileCopyrightText: 2021 Nheko Contributors
// SPDX-FileCopyrightText: 2022 Nheko Contributors
//
// SPDX-License-Identifier: GPL-3.0-or-later

#include <QLabel>
#include <QLayout>
#include <QPainter>
#include <QStyleOption>

#include "Config.h"
#include "WelcomePage.h"
#include "ui/RaisedButton.h"
#include "ui/TextLabel.h"

WelcomePage::WelcomePage(QWidget *parent)
  : QWidget(parent)
{
    auto topLayout_ = new QVBoxLayout(this);
    topLayout_->setSpacing(20);
    topLayout_->setAlignment(Qt::AlignCenter);

    QFont headingFont;
    headingFont.setPointSizeF(headingFont.pointSizeF() * 2);
    QFont subTitleFont;
    subTitleFont.setPointSizeF(subTitleFont.pointSizeF() * 1.5);

    QIcon icon{QIcon::fromTheme("nheko", QIcon{":/logos/splash.png"})};

    auto logo_ = new QLabel(this);
    logo_->setPixmap(icon.pixmap(256));
    logo_->setAlignment(Qt::AlignCenter);

    QString heading(tr("Welcome to nheko! The desktop client for the Matrix protocol."));
    QString main(tr("Enjoy your stay!"));

    auto intoTxt_ = new TextLabel(heading, this);
    intoTxt_->setFont(headingFont);
    intoTxt_->setAlignment(Qt::AlignCenter);

    auto subTitle = new TextLabel(main, this);
    subTitle->setFont(subTitleFont);
    subTitle->setAlignment(Qt::AlignCenter);

    topLayout_->addStretch(1);
    topLayout_->addWidget(logo_);
    topLayout_->addWidget(intoTxt_);
    topLayout_->addWidget(subTitle);

    auto btnLayout_ = new QHBoxLayout();
    btnLayout_->setSpacing(20);
    btnLayout_->setContentsMargins(0, 20, 0, 20);

    const int fontHeight   = QFontMetrics{subTitleFont}.height();
    const int buttonHeight = fontHeight * 2.5;
    const int buttonWidth  = fontHeight * 8;

    auto registerBtn = new RaisedButton(tr("REGISTER"), this);
    registerBtn->setMinimumSize(buttonWidth, buttonHeight);
    registerBtn->setFontSize(subTitleFont.pointSizeF());
    registerBtn->setCornerRadius(conf::btn::cornerRadius);

    auto loginBtn = new RaisedButton(tr("LOGIN"), this);
    loginBtn->setMinimumSize(buttonWidth, buttonHeight);
    loginBtn->setFontSize(subTitleFont.pointSizeF());
    loginBtn->setCornerRadius(conf::btn::cornerRadius);

    btnLayout_->addStretch(1);
    btnLayout_->addWidget(registerBtn);
    btnLayout_->addWidget(loginBtn);
    btnLayout_->addStretch(1);

    topLayout_->addLayout(btnLayout_);
    topLayout_->addStretch(1);

    connect(registerBtn, &QPushButton::clicked, this, &WelcomePage::userRegister);
    connect(loginBtn, &QPushButton::clicked, this, &WelcomePage::userLogin);
}

void
WelcomePage::paintEvent(QPaintEvent *)
{
    QStyleOption opt;
    opt.initFrom(this);
    QPainter p(this);
    style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);
}