// Copyright (c) 2016 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.

#include "shell/renderer/content_settings_observer.h"

#include "content/public/renderer/render_frame.h"
#include "shell/common/options_switches.h"
#include "third_party/blink/public/common/associated_interfaces/associated_interface_provider.h"
#include "third_party/blink/public/common/web_preferences/web_preferences.h"
#include "third_party/blink/public/platform/url_conversion.h"
#include "third_party/blink/public/platform/web_security_origin.h"
#include "third_party/blink/public/web/web_local_frame.h"
#include "third_party/blink/public/web/web_view.h"

namespace electron {

ContentSettingsObserver::ContentSettingsObserver(
    content::RenderFrame* render_frame)
    : content::RenderFrameObserver(render_frame) {
  render_frame->GetWebFrame()->SetContentSettingsClient(this);
}

ContentSettingsObserver::~ContentSettingsObserver() = default;

mojom::ElectronWebContentsUtility&
ContentSettingsObserver::GetWebContentsUtility() {
  if (!web_contents_utility_) {
    render_frame()->GetRemoteAssociatedInterfaces()->GetInterface(
        &web_contents_utility_);
  }
  return *web_contents_utility_;
}

bool ContentSettingsObserver::AllowStorageAccessSync(StorageType storage_type) {
  blink::WebFrame* frame = render_frame()->GetWebFrame();
  if (frame->GetSecurityOrigin().IsOpaque() ||
      frame->Top()->GetSecurityOrigin().IsOpaque())
    return false;
  auto origin = blink::WebStringToGURL(frame->GetSecurityOrigin().ToString());
  if (!origin.IsStandard())
    return false;
  return true;
}

bool ContentSettingsObserver::AllowReadFromClipboardSync() {
  blink::WebLocalFrame* frame = render_frame()->GetWebFrame();
  if (frame->View()->GetWebPreferences().dom_paste_enabled) {
    blink::mojom::PermissionStatus status{
        blink::mojom::PermissionStatus::DENIED};
    GetWebContentsUtility().CanAccessClipboardDeprecated(
        mojom::PermissionName::DEPRECATED_SYNC_CLIPBOARD_READ,
        frame->GetLocalFrameToken(), &status);
    return status == blink::mojom::PermissionStatus::GRANTED;
  } else {
    return false;
  }
}

void ContentSettingsObserver::OnDestruct() {
  delete this;
}

}  // namespace electron