// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "components/permissions/contexts/window_management_permission_context.h"

#include "components/content_settings/core/common/content_settings_types.h"
#include "components/permissions/content_setting_permission_context_base.h"
#include "components/permissions/permission_decision.h"
#include "components/permissions/permission_request_id.h"
#include "content/public/browser/render_frame_host.h"
#include "services/network/public/mojom/permissions_policy/permissions_policy_feature.mojom.h"
#include "third_party/blink/public/mojom/frame/user_activation_notification_type.mojom.h"
#if BUILDFLAG(IS_ANDROID)
#include "base/feature_list.h"
#include "base/metrics/histogram_functions.h"
#include "base/notimplemented.h"
#include "components/permissions/features.h"
#include "ui/android/display_android_manager.h"
#endif  // IS_ANDROID

namespace permissions {

namespace {
#if BUILDFLAG(IS_ANDROID)
constexpr char kWindowManagementHistogramName[] =
    "Permissions.WindowManagementApi.Android.Allowed";
#endif  // IS_ANDROID
}  // namespace

WindowManagementPermissionContext::WindowManagementPermissionContext(
    content::BrowserContext* browser_context)
    : ContentSettingPermissionContextBase(
          browser_context,
          ContentSettingsType::WINDOW_MANAGEMENT,
          network::mojom::PermissionsPolicyFeature::kWindowManagement) {}

WindowManagementPermissionContext::~WindowManagementPermissionContext() =
    default;

#if BUILDFLAG(IS_ANDROID)
ContentSetting
WindowManagementPermissionContext::GetContentSettingStatusInternal(
    content::RenderFrameHost* render_frame_host,
    const GURL& requesting_origin,
    const GURL& embedding_origin) const {
  if (base::FeatureList::IsEnabled(
          permissions::features::kAndroidWindowManagementWebApi) &&
      ui::DisplayAndroidManager::IsDisplayTopologyAvailable()) {
    const ContentSetting content_setting =
        ContentSettingPermissionContextBase::GetContentSettingStatusInternal(
            render_frame_host, requesting_origin, embedding_origin);

    if (content_setting == ContentSetting::CONTENT_SETTING_ALLOW) {
      base::UmaHistogramBoolean(kWindowManagementHistogramName, true);
    } else if (content_setting == ContentSetting::CONTENT_SETTING_BLOCK) {
      base::UmaHistogramBoolean(kWindowManagementHistogramName, false);
    }

    return content_setting;
  }

  NOTIMPLEMENTED_LOG_ONCE();
  return CONTENT_SETTING_BLOCK;
}
#endif  // IS_ANDROID

void WindowManagementPermissionContext::UserMadePermissionDecision(
    const PermissionRequestID& id,
    const GURL& requesting_origin,
    const GURL& embedding_origin,
    PermissionDecision decision) {
  // Notify user activation on the requesting frame if permission was granted,
  // as transient activation may have expired while the user was responding.
  // This enables sites to prompt for permission to access multi-screen info and
  // then immediately request fullscreen or place a window using granted info.
  if (decision == PermissionDecision::kAllow) {
    if (auto* render_frame_host = content::RenderFrameHost::FromID(
            id.global_render_frame_host_id())) {
      render_frame_host->NotifyUserActivation(
          blink::mojom::UserActivationNotificationType::kInteraction);
    }
  }
}

}  // namespace permissions