/*
 * 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/integration-api/debug.h>
#include "dali-toolkit/devel-api/controls/web-view/web-view.h"

using namespace Dali;

namespace
{
}

class WebViewController : public ConnectionTracker
{
public:
  WebViewController(Application& application)
  : mApplication(application),
    mUrlPointer(0)
  {
    // Connect to the Application's Init signal
    mApplication.InitSignal().Connect(this, &WebViewController::Create);
  }

  ~WebViewController()
  {
    // Nothing to do here;
  }

  const char* GetNextUrl()
  {
    static const unsigned int kUrlSize        = 3;
    static const char*        kUrls[kUrlSize] = {
      "https://webkit.org/blog-files/3d-transforms/poster-circle.html",
      "https://www.amazon.com",
      "https://www.google.com"};
    mUrlPointer %= kUrlSize;
    return kUrls[mUrlPointer++];
  }

  // The Init signal is received once (only) during the Application lifetime
  void Create(Application& application)
  {
    // Get a handle to the window
    Window window = application.GetWindow();
    window.SetBackgroundColor(Vector4(0.2, 0.6, 1, 1));

    float width    = window.GetSize().GetWidth();
    float height   = window.GetSize().GetHeight();
    float fontSize = width * 0.02f;

    mWebView = Toolkit::WebView::New("ko-KR", "Asia/Seoul");
    mWebView.SetProperty(Actor::Property::PARENT_ORIGIN, Dali::ParentOrigin::CENTER);
    mWebView.SetProperty(Actor::Property::ANCHOR_POINT, Dali::AnchorPoint::CENTER);
    mWebView.SetProperty(Actor::Property::POSITION, Vector2(0, 0));
    mWebView.SetProperty(Actor::Property::SIZE, Vector2(width, height));
    mWebView.RegisterPageLoadStartedCallback(std::bind(&WebViewController::OnPageLoadStarted, this, std::placeholders::_1));
    mWebView.RegisterPageLoadFinishedCallback(std::bind(&WebViewController::OnPageLoadFinished, this, std::placeholders::_1));

    std::string url = GetNextUrl();
    mWebView.LoadUrl(url);
    window.Add(mWebView);

    mAddressLabel = Toolkit::TextLabel::New(url);
    mAddressLabel.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::TOP_LEFT);
    mAddressLabel.SetProperty(Toolkit::TextLabel::Property::POINT_SIZE, fontSize);
    mAddressLabel.SetProperty(Toolkit::TextLabel::Property::TEXT_COLOR, Color::WHITE);
    mAddressLabel.SetBackgroundColor(Vector4(0, 0, 0, 0.5f));
    mAddressLabel.TouchedSignal().Connect(this, &WebViewController::OnTouchText);
    window.Add(mAddressLabel);

    // Respond to key events
    window.KeyEventSignal().Connect(this, &WebViewController::OnKeyEvent);
    Toolkit::KeyboardFocusManager::Get().SetCurrentFocusActor(mWebView);
  }

  void OnPageLoadStarted(const std::string& url)
  {
    mAddressLabel.SetProperty(Toolkit::TextLabel::Property::TEXT, "Loading");
  }

  void OnPageLoadFinished(const std::string& url)
  {
    mAddressLabel.SetProperty(Toolkit::TextLabel::Property::TEXT, url.c_str());
  }

  bool OnTouchText(Actor actor, const TouchEvent& touch)
  {
    if(touch.GetState(0) == PointState::UP)
    {
      std::string url = GetNextUrl();
      mAddressLabel.SetProperty(Toolkit::TextLabel::Property::TEXT, "Waiting");
      mWebView.LoadUrl(url);
    }

    return true;
  }

  void OnKeyEvent(const KeyEvent& event)
  {
    if(event.GetState() == KeyEvent::DOWN)
    {
      if(IsKey(event, Dali::DALI_KEY_ESCAPE) || IsKey(event, Dali::DALI_KEY_BACK))
      {
        mApplication.Quit();
      }
    }
  }

private:
  Application&       mApplication;
  Toolkit::WebView   mWebView;
  Toolkit::TextLabel mAddressLabel;
  unsigned int       mUrlPointer;
};

int DALI_EXPORT_API main(int argc, char** argv)
{
  Application       application = Application::New(&argc, &argv);
  WebViewController test(application);
  application.MainLoop();
  return 0;
}