// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0

#include "infolabel.h"

#include "icon.h"
#include "utilsicons.h"

#include <QPainter>
#include <QPaintEvent>

namespace Utils {

constexpr int iconSize = 16;

Theme::Color infoTypeForegroundColor(InfoLabelType infoType)
{
    switch (infoType) {
    case InfoLabelType::Information:
        return Theme::Token_Notification_Neutral_Default;
    case InfoLabelType::Warning:
        return Theme::Token_Notification_Alert_Default;
    case InfoLabelType::Error:
    case InfoLabelType::NotOk:
        return Theme::Token_Notification_Danger_Default;
    case InfoLabelType::Ok:
        return Theme::Token_Notification_Success_Default;
    default:
        return Theme::Token_Text_Default;
    }
}

Theme::Color infoTypeBackgroundColor(InfoLabelType infoType)
{
    switch (infoType) {
    case InfoLabelType::Information:
        return Theme::Token_Notification_Neutral_Subtle;
    case InfoLabelType::Warning:
        return Theme::Token_Notification_Alert_Subtle;
    case InfoLabelType::Error:
    case InfoLabelType::NotOk:
        return Theme::Token_Notification_Danger_Subtle;
    case InfoLabelType::Ok:
        return Theme::Token_Notification_Success_Subtle;
    default:
        return Theme::InfoBarBackground;
    }
}

const Icon &infoTypeIconLarge(InfoLabelType infoType)
{
    switch (infoType) {
    case InfoLabelType::Information: {
        static const Icon icon({{":/utils/images/infolarge.png",
                                 infoTypeForegroundColor(infoType)}}, Icon::Tint);
        return icon;
    }
    case InfoLabelType::Warning: {
        static const Icon icon({{":/utils/images/warninglarge.png",
                                 infoTypeForegroundColor(infoType)}}, Icon::Tint);
        return icon;
    }
    case InfoLabelType::Error:
    case InfoLabelType::NotOk: {
        static const Icon icon({{":/utils/images/errorlarge.png",
                                 infoTypeForegroundColor(infoType)}}, Icon::Tint);
        return icon;
    }
    case InfoLabelType::Ok: {
        static const Icon icon({{":/utils/images/oklarge.png",
                                 infoTypeForegroundColor(infoType)}}, Icon::Tint);
        return icon;
    }
    default: {
        static const Icon icon;
        return icon;
    }
    }
}

InfoLabel::InfoLabel(QWidget *parent)
    : InfoLabel({}, InfoLabelType::Information, parent)
{
}

InfoLabel::InfoLabel(const QString &text, InfoLabelType type, QWidget *parent)
    : ElidingLabel(text, parent)
{
    setTextInteractionFlags(Qt::TextSelectableByMouse | textInteractionFlags());
    setType(type);
}

InfoLabelType InfoLabel::type() const
{
    return m_type;
}

void InfoLabel::setType(InfoLabelType type)
{
    m_type = type;
    setContentsMargins(m_type == InfoLabelType::None ? 0 : iconSize + 2, 0, 0, 0);
    update();
}

bool InfoLabel::filled() const
{
    return m_filled;
}

void InfoLabel::setFilled(bool filled)
{
    m_filled = filled;
}

QSize InfoLabel::minimumSizeHint() const
{
    QSize baseHint = ElidingLabel::minimumSizeHint();
    baseHint.setHeight(qMax(baseHint.height(), iconSize));
    return baseHint;
}

static Theme::Color fillColorForType(InfoLabelType type)
{
    using namespace Utils;
    switch (type) {
    case InfoLabelType::Warning:
        return Theme::IconsWarningColor;
    case InfoLabelType::Ok:
        return Theme::IconsRunColor;
    case InfoLabelType::Error:
    case InfoLabelType::NotOk:
        return Theme::IconsErrorColor;
    case InfoLabelType::Information:
    default:
        return Theme::IconsInfoColor;
    }
}

static const QIcon &infoTypeIconSmall(InfoLabelType type)
{
    using namespace Utils;
    switch (type) {
    case InfoLabelType::Information: {
        static const QIcon icon = Icons::INFO.icon();
        return icon;
    }
    case InfoLabelType::Warning: {
        static const QIcon icon = Icons::WARNING.icon();
        return icon;
    }
    case InfoLabelType::Error: {
        static const QIcon icon = Icons::CRITICAL.icon();
        return icon;
    }
    case InfoLabelType::Ok: {
        static const QIcon icon = Icons::OK.icon();
        return icon;
    }
    case InfoLabelType::NotOk: {
        static const QIcon icon = Icons::BROKEN.icon();
        return icon;
    }
    default: {
        static const QIcon undefined;
        return undefined;
    }
    }
}

void InfoLabel::paintEvent(QPaintEvent *event)
{
    if (m_type == InfoLabelType::None)
        return ElidingLabel::paintEvent(event);

    const bool centerIconVertically = wordWrap() || elideMode() == Qt::ElideNone;
    const QRect iconRect(0, centerIconVertically ? 0 : ((height() - iconSize) / 2),
                         iconSize, iconSize);

    QPainter p(this);
    if (m_filled && isEnabled()) {
        p.save();
        p.setOpacity(0.175);
        p.fillRect(rect(), creatorColor(fillColorForType(m_type)));
        p.restore();
    }
    const QIcon &icon = infoTypeIconSmall(m_type);
    const QIcon::Mode mode = !this->isEnabled() ? QIcon::Disabled : QIcon::Normal;
    const QPixmap iconPx =
            icon.pixmap(QSize(iconSize, iconSize) * devicePixelRatio(), devicePixelRatio(), mode);
    p.drawPixmap(iconRect, iconPx);
    ElidingLabel::paintEvent(event);
}

} // namespace Utils
