#ifndef DALI_DEMO_HELPER_VIEW_H
#define DALI_DEMO_HELPER_VIEW_H

/*
 * Copyright (c) 2020 Samsung Electronics Co., Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

#include <dali-toolkit/dali-toolkit.h>
#include <dali-toolkit/devel-api/controls/tool-bar/tool-bar.h>

namespace DemoHelper
{
/**
 * Provide a style for the view and its tool bar.
 */
struct ViewStyle
{
  ViewStyle(float toolBarButtonPercentage, float toolBarTitlePercentage, float toolBarHeight, float toolBarPadding)
  : mToolBarButtonPercentage(toolBarButtonPercentage),
    mToolBarTitlePercentage(toolBarTitlePercentage),
    mToolBarHeight(toolBarHeight),
    mToolBarPadding(toolBarPadding)
  {
  }

  float mToolBarButtonPercentage; ///< The tool bar button width is a percentage of the tool bar width.
  float mToolBarTitlePercentage;  ///< The tool bar title width is a percentage of the tool bar width.
  float mToolBarHeight;           ///< The tool bar height (in pixels).
  float mToolBarPadding;          ///< The tool bar padding (in pixels)..
};

const ViewStyle DEFAULT_VIEW_STYLE(0.1f, 0.7f, 80.f, 4.f);

const char* DEFAULT_TEXT_STYLE_FONT_FAMILY("HelveticaNue");
const float DEFAULT_TEXT_STYLE_POINT_SIZE(8.0f);

const Dali::Toolkit::Alignment::Padding DEFAULT_PLAY_PADDING(12.0f, 12.0f, 12.0f, 12.0f);
const Dali::Toolkit::Alignment::Padding DEFAULT_MODE_SWITCH_PADDING(8.0f, 8.0f, 8.0f, 8.0f);

Dali::Layer CreateToolbar(Dali::Toolkit::ToolBar& toolBar,
                          const std::string&      toolbarImagePath,
                          const std::string&      title,
                          const ViewStyle&        style)
{
  Dali::Layer toolBarLayer = Dali::Layer::New();
  toolBarLayer.SetProperty(Dali::Actor::Property::NAME, "TOOLBAR_LAYER");
  toolBarLayer.SetProperty(Dali::Actor::Property::ANCHOR_POINT, Dali::AnchorPoint::TOP_CENTER);
  toolBarLayer.SetProperty(Dali::Actor::Property::PARENT_ORIGIN, Dali::ParentOrigin::TOP_CENTER);
  toolBarLayer.SetResizePolicy(Dali::ResizePolicy::FILL_TO_PARENT, Dali::Dimension::WIDTH);
  toolBarLayer.SetProperty(Dali::Actor::Property::SIZE, Dali::Vector2(0.0f, style.mToolBarHeight));

  // Raise tool bar layer to the top.
  toolBarLayer.RaiseToTop();

  // Tool bar
  toolBar = Dali::Toolkit::ToolBar::New();
  toolBar.SetProperty(Dali::Actor::Property::NAME, "TOOLBAR");
  Dali::Property::Map background;
  background["url"] = toolbarImagePath;
  toolBar.SetProperty(Dali::Toolkit::Control::Property::BACKGROUND, background);
  toolBar.SetProperty(Dali::Actor::Property::PARENT_ORIGIN, Dali::ParentOrigin::TOP_CENTER);
  toolBar.SetProperty(Dali::Actor::Property::ANCHOR_POINT, Dali::AnchorPoint::TOP_CENTER);
  toolBar.SetResizePolicy(Dali::ResizePolicy::FILL_TO_PARENT, Dali::Dimension::ALL_DIMENSIONS);

  // Add the tool bar to the tool bar layer.
  toolBarLayer.Add(toolBar);

  // Tool bar text.
  if(!title.empty())
  {
    Dali::Toolkit::TextLabel label = Dali::Toolkit::TextLabel::New();
    label.SetProperty(Dali::Actor::Property::ANCHOR_POINT, Dali::AnchorPoint::TOP_LEFT);
    label.SetStyleName("ToolbarLabel");
    label.SetProperty(Dali::Toolkit::TextLabel::Property::TEXT, title);
    label.SetProperty(Dali::Toolkit::TextLabel::Property::HORIZONTAL_ALIGNMENT, "CENTER");
    label.SetProperty(Dali::Toolkit::TextLabel::Property::VERTICAL_ALIGNMENT, "CENTER");
    label.SetResizePolicy(Dali::ResizePolicy::FILL_TO_PARENT, Dali::Dimension::HEIGHT);

    // Add title to the tool bar.
    const float padding(style.mToolBarPadding);
    toolBar.AddControl(label, style.mToolBarTitlePercentage, Dali::Toolkit::Alignment::HORIZONTAL_CENTER, Dali::Toolkit::Alignment::Padding(padding, padding, padding, padding));
  }

  return toolBarLayer;
}

Dali::Layer CreateView(Dali::Application&      application,
                       Dali::Toolkit::Control& view,
                       Dali::Toolkit::ToolBar& toolBar,
                       const std::string&      backgroundImagePath,
                       const std::string&      toolbarImagePath,
                       const std::string&      title,
                       const ViewStyle&        style = DEFAULT_VIEW_STYLE)
{
  Dali::Window window = application.GetWindow();

  // Create default View.
  view = Dali::Toolkit::Control::New();
  view.SetProperty(Dali::Actor::Property::ANCHOR_POINT, Dali::AnchorPoint::CENTER);
  view.SetProperty(Dali::Actor::Property::PARENT_ORIGIN, Dali::ParentOrigin::CENTER);
  view.SetResizePolicy(Dali::ResizePolicy::FILL_TO_PARENT, Dali::Dimension::ALL_DIMENSIONS);

  // Add the view to the window before setting the background.
  window.Add(view);

  // Set background image, loading it at screen resolution:
  if(!backgroundImagePath.empty())
  {
    Dali::Property::Map map;
    map[Dali::Toolkit::Visual::Property::TYPE]                     = Dali::Toolkit::Visual::IMAGE;
    map[Dali::Toolkit::ImageVisual::Property::URL]                 = backgroundImagePath;
    map[Dali::Toolkit::ImageVisual::Property::DESIRED_WIDTH]       = window.GetSize().GetWidth();
    map[Dali::Toolkit::ImageVisual::Property::DESIRED_HEIGHT]      = window.GetSize().GetHeight();
    map[Dali::Toolkit::ImageVisual::Property::FITTING_MODE]        = Dali::FittingMode::SCALE_TO_FILL;
    map[Dali::Toolkit::ImageVisual::Property::SAMPLING_MODE]       = Dali::SamplingMode::BOX_THEN_LINEAR;
    map[Dali::Toolkit::ImageVisual::Property::SYNCHRONOUS_LOADING] = true;
    view.SetProperty(Dali::Toolkit::Control::Property::BACKGROUND, map);
  }

  // Create default ToolBar
  Dali::Layer toolBarLayer = CreateToolbar(toolBar, toolbarImagePath, title, style);

  // Add tool bar layer to the view.
  view.Add(toolBarLayer);

  // Create a content layer.
  Dali::Layer contentLayer = Dali::Layer::New();
  contentLayer.SetProperty(Dali::Actor::Property::ANCHOR_POINT, Dali::AnchorPoint::CENTER);
  contentLayer.SetProperty(Dali::Actor::Property::PARENT_ORIGIN, Dali::ParentOrigin::CENTER);
  contentLayer.SetResizePolicy(Dali::ResizePolicy::FILL_TO_PARENT, Dali::Dimension::ALL_DIMENSIONS);
  view.Add(contentLayer);
  contentLayer.LowerBelow(toolBarLayer);

  return contentLayer;
}

Dali::Toolkit::TextLabel CreateToolBarLabel(const std::string& text)
{
  Dali::Toolkit::TextLabel label = Dali::Toolkit::TextLabel::New(text);
  label.SetStyleName("ToolbarLabel");
  label.SetProperty(Dali::Toolkit::TextLabel::Property::HORIZONTAL_ALIGNMENT, "CENTER");
  label.SetProperty(Dali::Toolkit::TextLabel::Property::VERTICAL_ALIGNMENT, "CENTER");
  label.SetResizePolicy(Dali::ResizePolicy::FILL_TO_PARENT, Dali::Dimension::HEIGHT);

  return label;
}

} // namespace DemoHelper

#endif // DALI_DEMO_HELPER_VIEW_H