// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/plugins/plugin_infobar_delegates.h"

#include <utility>

#include "base/bind.h"
#include "base/metrics/user_metrics.h"
#include "base/path_service.h"
#include "base/strings/utf_string_conversions.h"
#include "build/build_config.h"
#include "chrome/browser/infobars/confirm_infobar_creator.h"
#include "chrome/browser/lifetime/application_lifetime.h"
#include "chrome/browser/plugins/chrome_plugin_service_filter.h"
#include "chrome/browser/plugins/plugin_installer.h"
#include "chrome/browser/plugins/plugin_metadata.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/shell_integration.h"
#include "chrome/browser/ui/browser_commands.h"
#include "chrome/common/buildflags.h"
#include "chrome/common/url_constants.h"
#include "chrome/grit/generated_resources.h"
#include "components/google/core/common/google_util.h"
#include "components/infobars/content/content_infobar_manager.h"
#include "components/infobars/core/infobar.h"
#include "components/strings/grit/components_strings.h"
#include "components/vector_icons/vector_icons.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/web_contents.h"
#include "ui/base/l10n/l10n_util.h"

#if defined(OS_WIN)
#include <windows.h>

#include <shellapi.h>
#include "ui/base/win/shell.h"
#endif

using base::UserMetricsAction;

namespace {

std::u16string GetInfoBarMessage(const PluginMetadata& metadata) {
  return l10n_util::GetStringFUTF16(metadata.plugin_is_deprecated()
                                        ? IDS_PLUGIN_DEPRECATED
                                        : IDS_PLUGIN_OUTDATED_PROMPT,
                                    metadata.name());
}

}  // namespace

// OutdatedPluginInfoBarDelegate ----------------------------------------------

void OutdatedPluginInfoBarDelegate::Create(
    infobars::ContentInfoBarManager* infobar_manager,
    PluginInstaller* installer,
    std::unique_ptr<PluginMetadata> plugin_metadata) {
  std::unique_ptr<ConfirmInfoBarDelegate> delegate_ptr;
  delegate_ptr.reset(
      new OutdatedPluginInfoBarDelegate(installer, std::move(plugin_metadata)));
  infobar_manager->AddInfoBar(CreateConfirmInfoBar(std::move(delegate_ptr)));
}

OutdatedPluginInfoBarDelegate::OutdatedPluginInfoBarDelegate(
    PluginInstaller* installer,
    std::unique_ptr<PluginMetadata> plugin_metadata,
    const std::u16string& message)
    : ConfirmInfoBarDelegate(),
      WeakPluginInstallerObserver(installer),
      identifier_(plugin_metadata->identifier()),
      plugin_metadata_(std::move(plugin_metadata)),
      message_(message.empty() ? GetInfoBarMessage(*plugin_metadata_)
                               : message) {
  base::RecordAction(UserMetricsAction("OutdatedPluginInfobar.Shown"));
  std::string name = base::UTF16ToUTF8(plugin_metadata_->name());
  if (name == PluginMetadata::kJavaGroupName) {
    base::RecordAction(UserMetricsAction("OutdatedPluginInfobar.Shown.Java"));
  } else if (name == PluginMetadata::kQuickTimeGroupName) {
    base::RecordAction(
        UserMetricsAction("OutdatedPluginInfobar.Shown.QuickTime"));
  } else if (name == PluginMetadata::kShockwaveGroupName) {
    base::RecordAction(
        UserMetricsAction("OutdatedPluginInfobar.Shown.Shockwave"));
  } else if (name == PluginMetadata::kRealPlayerGroupName) {
    base::RecordAction(
        UserMetricsAction("OutdatedPluginInfobar.Shown.RealPlayer"));
  } else if (name == PluginMetadata::kSilverlightGroupName) {
    base::RecordAction(
        UserMetricsAction("OutdatedPluginInfobar.Shown.Silverlight"));
  } else if (name == PluginMetadata::kAdobeReaderGroupName) {
    base::RecordAction(UserMetricsAction("OutdatedPluginInfobar.Shown.Reader"));
  }
}

OutdatedPluginInfoBarDelegate::~OutdatedPluginInfoBarDelegate() {
  base::RecordAction(UserMetricsAction("OutdatedPluginInfobar.Closed"));
}

infobars::InfoBarDelegate::InfoBarIdentifier
OutdatedPluginInfoBarDelegate::GetIdentifier() const {
  return OUTDATED_PLUGIN_INFOBAR_DELEGATE;
}

const gfx::VectorIcon& OutdatedPluginInfoBarDelegate::GetVectorIcon() const {
  return vector_icons::kExtensionIcon;
}

std::u16string OutdatedPluginInfoBarDelegate::GetLinkText() const {
  return l10n_util::GetStringUTF16(IDS_LEARN_MORE);
}

GURL OutdatedPluginInfoBarDelegate::GetLinkURL() const {
  return GURL(chrome::kOutdatedPluginLearnMoreURL);
}

void OutdatedPluginInfoBarDelegate::InfoBarDismissed() {
  base::RecordAction(UserMetricsAction("OutdatedPluginInfobar.Dismissed"));
}

std::u16string OutdatedPluginInfoBarDelegate::GetMessageText() const {
  return message_;
}

int OutdatedPluginInfoBarDelegate::GetButtons() const {
  // Deprecated plugins cannot be run anymore, not even temporarily.
  if (plugin_metadata_->plugin_is_deprecated())
    return BUTTON_NONE;

  return BUTTON_OK | BUTTON_CANCEL;
}

std::u16string OutdatedPluginInfoBarDelegate::GetButtonLabel(
    InfoBarButton button) const {
  return l10n_util::GetStringUTF16((button == BUTTON_OK) ?
      IDS_PLUGIN_UPDATE : IDS_PLUGIN_ENABLE_TEMPORARILY);
}

bool OutdatedPluginInfoBarDelegate::Accept() {
  base::RecordAction(UserMetricsAction("OutdatedPluginInfobar.Update"));
  // A call to any of |OpenDownloadURL()| or |StartInstalling()| will
  // result in deleting ourselves. Accordingly, we make sure to
  // not pass a reference to an object that can go away.
  GURL plugin_url(plugin_metadata_->plugin_url());
  content::WebContents* web_contents =
      infobars::ContentInfoBarManager::WebContentsFromInfoBar(infobar());
  if (web_contents) {
    DCHECK(plugin_metadata_->url_for_display());
    installer()->OpenDownloadURL(plugin_url, web_contents);
  }
  return false;
}

bool OutdatedPluginInfoBarDelegate::Cancel() {
  base::RecordAction(UserMetricsAction("OutdatedPluginInfobar.AllowThisTime"));

  content::WebContents* web_contents =
      infobars::ContentInfoBarManager::WebContentsFromInfoBar(infobar());
  if (web_contents) {
    ChromePluginServiceFilter::GetInstance()->AuthorizeAllPlugins(
        web_contents, true, identifier_);
  }

  return true;
}

void OutdatedPluginInfoBarDelegate::DownloadFinished() {
  ReplaceWithInfoBar(l10n_util::GetStringFUTF16(IDS_PLUGIN_UPDATING,
                                                plugin_metadata_->name()));
}

void OutdatedPluginInfoBarDelegate::OnlyWeakObserversLeft() {
  infobar()->RemoveSelf();
}

void OutdatedPluginInfoBarDelegate::ReplaceWithInfoBar(
    const std::u16string& message) {
  // Return early if the message doesn't change. This is important in case the
  // PluginInstaller is still iterating over its observers (otherwise we would
  // keep replacing infobar delegates infinitely).
  if ((message_ == message) || !infobar()->owner())
    return;

  std::unique_ptr<ConfirmInfoBarDelegate> delegate_ptr;
  delegate_ptr.reset(new OutdatedPluginInfoBarDelegate(
      installer(), std::move(plugin_metadata_), message));
  infobar()->owner()->ReplaceInfoBar(
      infobar(), CreateConfirmInfoBar(std::move(delegate_ptr)));
}