// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/ui/views/tabs/fade_footer_view.h"

#include "base/check.h"
#include "chrome/app/vector_icons/vector_icons.h"
#include "chrome/browser/ui/color/chrome_color_id.h"
#include "chrome/browser/ui/layout_constants.h"
#include "chrome/browser/ui/tabs/alert/tab_alert.h"
#include "chrome/browser/ui/tabs/alert/tab_alert_icon.h"
#include "chrome/browser/ui/views/tabs/alert_indicator_button.h"
#include "chrome/grit/generated_resources.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/base/models/image_model.h"
#include "ui/base/text/bytes_formatting.h"
#include "ui/base/ui_base_features.h"
#include "ui/color/color_id.h"
#include "ui/compositor/layer.h"
#include "ui/gfx/color_palette.h"
#include "ui/views/border.h"
#include "ui/views/layout/flex_layout_types.h"
#include "ui/views/layout/layout_provider.h"
#include "ui/views/view.h"
#include "ui/views/view_class_properties.h"

namespace {
// Spacing to separate the icon from its corresponding label.
constexpr int kIconLabelSpacing = 8;
// Margins used to surround the entire footer contents.
constexpr auto kFooterMargins = gfx::Insets::VH(12, 12);
// Spacing used to separate two footer rows.
constexpr int kFooterRowSpacing = 8;

ui::ColorId GetTabAlertColor(tabs::TabAlert alert_state) {
  // Hover card background color isn't affected by third party themes so icons
  // need to use a different color id from those used in the
  // AlertIndicatorButton.
  ui::ColorId icon_color = gfx::kPlaceholderColor;
  switch (alert_state) {
    case tabs::TabAlert::MEDIA_RECORDING:
    case tabs::TabAlert::AUDIO_RECORDING:
    case tabs::TabAlert::VIDEO_RECORDING:
    case tabs::TabAlert::DESKTOP_CAPTURING:
      icon_color = kColorHoverCardTabAlertMediaRecordingIcon;
      break;
    case tabs::TabAlert::TAB_CAPTURING:
    case tabs::TabAlert::PIP_PLAYING:
    case tabs::TabAlert::GLIC_ACCESSING:
    case tabs::TabAlert::GLIC_SHARING:
      icon_color = kColorHoverCardTabAlertPipPlayingIcon;
      break;
    case tabs::TabAlert::AUDIO_PLAYING:
    case tabs::TabAlert::AUDIO_MUTING:
    case tabs::TabAlert::BLUETOOTH_CONNECTED:
    case tabs::TabAlert::BLUETOOTH_SCAN_ACTIVE:
    case tabs::TabAlert::USB_CONNECTED:
    case tabs::TabAlert::HID_CONNECTED:
    case tabs::TabAlert::SERIAL_CONNECTED:
    case tabs::TabAlert::VR_PRESENTING_IN_HEADSET:
      icon_color = kColorHoverCardTabAlertAudioPlayingIcon;
      break;
  }

  return icon_color;
}
}  // namespace

template <typename T>
FooterRow<T>::FooterRow(bool is_fade_out_view)
    : is_fade_out_view_(is_fade_out_view) {
  views::FlexLayout* flex_layout =
      views::View::SetLayoutManager(std::make_unique<views::FlexLayout>());
  flex_layout->SetOrientation(views::LayoutOrientation::kHorizontal)
      .SetCrossAxisAlignment(views::LayoutAlignment::kStart);

  icon_ = views::View::AddChildView(std::make_unique<views::ImageView>());

  if (is_fade_out_view) {
    icon_->SetPaintToLayer();
    icon_->layer()->SetOpacity(0.0f);
  }

  icon_->SetVerticalAlignment(views::ImageView::Alignment::kLeading);
  footer_label_ = views::View::AddChildView(std::make_unique<views::Label>(
      std::u16string(), views::style::CONTEXT_DIALOG_BODY_TEXT));
  icon_->SetBackground(
      views::CreateSolidBackground(ui::kColorBubbleFooterBackground));
  footer_label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
  footer_label_->SetMultiLine(true);
  footer_label_->SetProperty(
      views::kFlexBehaviorKey,
      views::FlexSpecification(views::LayoutOrientation::kHorizontal,
                               views::MinimumFlexSizeRule::kScaleToZero,
                               views::MaximumFlexSizeRule::kUnbounded, true));

  footer_label_->SetEnabledColor(kColorTabHoverCardSecondaryText);
  footer_label_->SetTextStyle(views::style::STYLE_BODY_4);

  // Vertically align the icon to the top line of the label
  const int offset = (footer_label_->GetLineHeight() -
                      GetLayoutConstant(TAB_ALERT_INDICATOR_ICON_WIDTH)) /
                     2;
  icon_->SetProperty(views::kMarginsKey,
                     gfx::Insets::TLBR(offset, 0, 0, kIconLabelSpacing));
}

template <typename T>
void FooterRow<T>::SetContent(const ui::ImageModel& icon_image_model,
                              std::u16string label_text) {
  footer_label_->SetText(label_text);
  icon_->SetImage(icon_image_model);
}

template <typename T>
gfx::Size FooterRow<T>::CalculatePreferredSize(
    const views::SizeBounds& available_size) const {
  return footer_label_->GetText().empty()
             ? gfx::Size()
             : views::View::CalculatePreferredSize(available_size);
}

template <typename T>
gfx::Size FooterRow<T>::GetMinimumSize() const {
  return gfx::Size();
}

template <typename T>
void FooterRow<T>::SetFade(double percent) {
  CHECK(is_fade_out_view_);
  percent = std::min(1.0, percent);
  icon_->layer()->SetOpacity(1.0 - percent);
  const SkAlpha alpha = base::saturated_cast<SkAlpha>(
      std::numeric_limits<SkAlpha>::max() * (1.0 - percent));
  footer_label_->SetBackgroundColor(
      SkColorSetA(footer_label_->GetBackgroundColor(), alpha));
  footer_label_->SetEnabledColor(
      SkColorSetA(footer_label_->GetEnabledColor(), alpha));
}

using FooterRow_AlertFooterRowData = FooterRow<AlertFooterRowData>;
BEGIN_TEMPLATE_METADATA(FooterRow_AlertFooterRowData, FooterRow)
END_METADATA

using FooterRow_PerformanceRowData = FooterRow<PerformanceRowData>;
BEGIN_TEMPLATE_METADATA(FooterRow_PerformanceRowData, FooterRow)
END_METADATA

using FooterRow_CollaborationMessagingRowData =
    FooterRow<CollaborationMessagingRowData>;
BEGIN_TEMPLATE_METADATA(FooterRow_CollaborationMessagingRowData, FooterRow)
END_METADATA

template class FooterRow<AlertFooterRowData>;
template class FooterRow<PerformanceRowData>;
template class FooterRow<CollaborationMessagingRowData>;

// FadeAlertFooterRow
// -----------------------------------------------------------------------

void FadeAlertFooterRow::SetData(const AlertFooterRowData& data) {
  std::optional<tabs::TabAlert> alert_state = data.alert_state;
  if (data.should_show_discard_status) {
    std::u16string row_text;
    if (data.memory_savings_in_bytes > 0) {
      const std::u16string formatted_memory_usage =
          ui::FormatBytes(data.memory_savings_in_bytes);
      row_text = l10n_util::GetStringFUTF16(
          IDS_HOVERCARD_INACTIVE_TAB_MEMORY_SAVINGS, formatted_memory_usage);
    } else {
      row_text = l10n_util::GetStringUTF16(IDS_HOVERCARD_INACTIVE_TAB);
    }
    SetContent(ui::ImageModel::FromVectorIcon(
                   kPerformanceSpeedometerIcon,
                   kColorHoverCardTabAlertAudioPlayingIcon,
                   GetLayoutConstant(TAB_ALERT_INDICATOR_ICON_WIDTH)),
               row_text);
  } else if (alert_state.has_value()) {
    const tabs::TabAlert alert = alert_state.value();
    SetContent(tabs::GetAlertImageModel(alert, GetTabAlertColor(alert)),
               GetTabAlertStateText(alert));
  } else {
    SetContent(ui::ImageModel(), std::u16string());
  }
  data_ = data;
}

BEGIN_METADATA(FadeAlertFooterRow)
END_METADATA

// FadePerformanceFooterRow
// -----------------------------------------------------------------------

void FadePerformanceFooterRow::SetData(const PerformanceRowData& data) {
  if (data.show_memory_usage) {
    const std::u16string formatted_memory_usage =
        ui::FormatBytes(data.memory_usage_in_bytes);
    const std::u16string row_text = l10n_util::GetStringFUTF16(
        data.is_high_memory_usage ? IDS_HOVERCARD_TAB_HIGH_MEMORY_USAGE
                                  : IDS_HOVERCARD_TAB_MEMORY_USAGE,
        formatted_memory_usage);

    const ui::ImageModel icon_image_model = ui::ImageModel::FromVectorIcon(
        kPerformanceSpeedometerIcon, kColorHoverCardTabAlertAudioPlayingIcon,
        GetLayoutConstant(TAB_ALERT_INDICATOR_ICON_WIDTH));
    SetContent(icon_image_model, row_text);
  } else {
    SetContent(ui::ImageModel(), std::u16string());
  }

  data_ = data;
}

BEGIN_METADATA(FadePerformanceFooterRow)
END_METADATA

// FadeCollaborationMessagingFooterRow
// -----------------------------------------------------------------------

void FadeCollaborationMessagingFooterRow::SetData(
    const CollaborationMessagingRowData& data) {
  data_ = data;

  if (!data_.should_show_collaboration_messaging) {
    // Empty section if collaboration messaging should be hidden.
    SetContent(ui::ImageModel(), std::u16string());
    return;
  }

  SetContent(data_.avatar, data_.text);
}

CollaborationMessagingRowData::CollaborationMessagingRowData() = default;
CollaborationMessagingRowData::~CollaborationMessagingRowData() = default;
CollaborationMessagingRowData::CollaborationMessagingRowData(
    const CollaborationMessagingRowData& other) = default;
CollaborationMessagingRowData& CollaborationMessagingRowData::operator=(
    const CollaborationMessagingRowData& other) = default;

BEGIN_METADATA(FadeCollaborationMessagingFooterRow)
END_METADATA

// FooterView
// -----------------------------------------------------------------------

DEFINE_CLASS_ELEMENT_IDENTIFIER_VALUE(FooterView, kHoverCardFooterElementId);

FooterView::FooterView() {
  SetProperty(views::kElementIdentifierKey, kHoverCardFooterElementId);
  flex_layout_ =
      views::View::SetLayoutManager(std::make_unique<views::FlexLayout>());
  flex_layout_->SetOrientation(views::LayoutOrientation::kVertical)
      .SetMainAxisAlignment(views::LayoutAlignment::kStart)
      .SetCollapseMargins(true)
      .SetInteriorMargin(kFooterMargins)
      .SetDefault(views::kMarginsKey, gfx::Insets::VH(kFooterRowSpacing, 0));
  alert_row_ = AddChildView(std::make_unique<AlertFadeView>(
      std::make_unique<FadeAlertFooterRow>(/* is_fade_out_view =*/false),
      std::make_unique<FadeAlertFooterRow>(/* is_fade_out_view =*/true)));

  performance_row_ = AddChildView(std::make_unique<PerformanceFadeView>(
      std::make_unique<FadePerformanceFooterRow>(/* is_fade_out_view =*/false),
      std::make_unique<FadePerformanceFooterRow>(/* is_fade_out_view =*/true)));

  collaboration_messaging_row_ =
      AddChildView(std::make_unique<CollaborationMessagingFadeView>(
          std::make_unique<FadeCollaborationMessagingFooterRow>(
              /* is_fade_out_view =*/false),
          std::make_unique<FadeCollaborationMessagingFooterRow>(
              /* is_fade_out_view =*/true)));

  alert_row_->SetProperty(
      views::kFlexBehaviorKey,
      views::FlexSpecification(views::LayoutOrientation::kHorizontal,
                               views::MinimumFlexSizeRule::kScaleToMinimum,
                               views::MaximumFlexSizeRule::kUnbounded, true));

  performance_row_->SetProperty(
      views::kFlexBehaviorKey,
      views::FlexSpecification(views::LayoutOrientation::kHorizontal,
                               views::MinimumFlexSizeRule::kScaleToMinimum,
                               views::MaximumFlexSizeRule::kUnbounded, true));

  collaboration_messaging_row_->SetProperty(
      views::kFlexBehaviorKey,
      views::FlexSpecification(views::LayoutOrientation::kHorizontal,
                               views::MinimumFlexSizeRule::kScaleToMinimum,
                               views::MaximumFlexSizeRule::kUnbounded, true));

  SetBackground(views::CreateSolidBackground(ui::kColorBubbleFooterBackground));
}

void FooterView::SetAlertData(const AlertFooterRowData& data) {
  alert_row_->SetData(data);
  UpdateVisibility();
}

void FooterView::SetPerformanceData(const PerformanceRowData& data) {
  performance_row_->SetData(data);
  UpdateVisibility();
}

void FooterView::SetCollaborationMessagingData(
    const CollaborationMessagingRowData& data) {
  collaboration_messaging_row_->SetData(data);
  UpdateVisibility();
}

void FooterView::SetFade(double percent) {
  alert_row_->SetFade(percent);
  performance_row_->SetFade(percent);
  collaboration_messaging_row_->SetFade(percent);
}

void FooterView::UpdateVisibility() {
  SetVisible(performance_row_->CalculatePreferredSize({}).height() > 0 ||
             alert_row_->CalculatePreferredSize({}).height() > 0 ||
             collaboration_messaging_row_->CalculatePreferredSize({}).height() >
                 0);
}

using FadeWrapper_View_PerformanceRowData =
    FadeWrapper<views::View, PerformanceRowData>;

BEGIN_TEMPLATE_METADATA(FadeWrapper_View_PerformanceRowData, FadeWrapper)
END_METADATA

using FadeWrapper_View_AlertFooterRowData =
    FadeWrapper<views::View, AlertFooterRowData>;

BEGIN_TEMPLATE_METADATA(FadeWrapper_View_AlertFooterRowData, FadeWrapper)
END_METADATA

using FadeWrapper_View_CollaborationMessagingRowData =
    FadeWrapper<views::View, CollaborationMessagingRowData>;

BEGIN_TEMPLATE_METADATA(FadeWrapper_View_CollaborationMessagingRowData,
                        FadeWrapper)
END_METADATA

using FadeView_FadeAlertFooterRow_FadeAlertFooterRow_AlertFooterRowData =
    FadeView<FadeAlertFooterRow, FadeAlertFooterRow, AlertFooterRowData>;

BEGIN_TEMPLATE_METADATA(
    FadeView_FadeAlertFooterRow_FadeAlertFooterRow_AlertFooterRowData,
    FadeView)
END_METADATA

using FadeView_FadePerformanceFooterRow_FadePerformanceFooterRow_PerformanceRowData =
    FadeView<FadePerformanceFooterRow,
             FadePerformanceFooterRow,
             PerformanceRowData>;

BEGIN_TEMPLATE_METADATA(
    FadeView_FadePerformanceFooterRow_FadePerformanceFooterRow_PerformanceRowData,
    FadeView)
END_METADATA

using FadeView_FadeCollaborationMessagingFooterRow_FadeCollaborationMessagingFooterRow_CollaborationMessagingRowData =
    FadeView<FadeCollaborationMessagingFooterRow,
             FadeCollaborationMessagingFooterRow,
             CollaborationMessagingRowData>;

BEGIN_TEMPLATE_METADATA(
    FadeView_FadeCollaborationMessagingFooterRow_FadeCollaborationMessagingFooterRow_CollaborationMessagingRowData,
    FadeView)
END_METADATA

BEGIN_METADATA(FooterView)
END_METADATA