// Copyright (c) 2013 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/ui/views/outdated_upgrade_bubble_view.h"

#include "base/bind.h"
#include "base/metrics/histogram_macros.h"
#include "base/metrics/user_metrics.h"
#include "base/task/post_task.h"
#include "build/build_config.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/ui/browser_dialogs.h"
#include "chrome/browser/ui/views/chrome_layout_provider.h"
#include "chrome/browser/upgrade_detector/upgrade_detector.h"
#include "chrome/common/pref_names.h"
#include "chrome/grit/chromium_strings.h"
#include "chrome/grit/generated_resources.h"
#include "components/prefs/pref_service.h"
#include "content/public/browser/page_navigator.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/views/controls/label.h"
#include "ui/views/layout/fill_layout.h"
#include "ui/views/widget/widget.h"
#include "url/gurl.h"

#if defined(OS_WIN)
#include "chrome/installer/util/google_update_util.h"
#endif

namespace {

// The URL to be used to re-install Chrome when auto-update failed for too long.
constexpr char kDownloadChromeUrl[] =
    "https://www.google.com/chrome/?&brand=CHWL"
    "&utm_campaign=en&utm_source=en-et-na-us-chrome-bubble&utm_medium=et";

// The maximum number of ignored bubble we track in the NumLaterPerReinstall
// histogram.
constexpr int kMaxIgnored = 50;
// The number of buckets we want the NumLaterPerReinstall histogram to use.
constexpr int kNumIgnoredBuckets = 5;

// The currently showing bubble.
OutdatedUpgradeBubbleView* g_upgrade_bubble = nullptr;

// The number of times the user ignored the bubble before finally choosing to
// reinstall.
int g_num_ignored_bubbles = 0;

}  // namespace

// OutdatedUpgradeBubbleView ---------------------------------------------------

// static
void OutdatedUpgradeBubbleView::ShowBubble(views::View* anchor_view,
                                           content::PageNavigator* navigator,
                                           bool auto_update_enabled) {
  if (g_upgrade_bubble)
    return;
  g_upgrade_bubble = new OutdatedUpgradeBubbleView(anchor_view, navigator,
                                                   auto_update_enabled);
  views::BubbleDialogDelegateView::CreateBubble(g_upgrade_bubble)->Show();
  base::RecordAction(
      auto_update_enabled
          ? base::UserMetricsAction("OutdatedUpgradeBubble.Show")
          : base::UserMetricsAction("OutdatedUpgradeBubble.ShowNoAU"));
}

OutdatedUpgradeBubbleView::~OutdatedUpgradeBubbleView() {
  // Increment the ignored bubble count (if this bubble wasn't ignored, this
  // increment is offset by a decrement in Accept()).
  if (g_num_ignored_bubbles < kMaxIgnored)
    ++g_num_ignored_bubbles;
}

void OutdatedUpgradeBubbleView::WindowClosing() {
  // Reset |g_upgrade_bubble| here, not in destructor, because destruction is
  // asynchronous and ShowBubble may be called before full destruction and
  // would attempt to show a bubble that is closing.
  DCHECK_EQ(g_upgrade_bubble, this);
  g_upgrade_bubble = nullptr;
}

base::string16 OutdatedUpgradeBubbleView::GetWindowTitle() const {
  return l10n_util::GetStringUTF16(IDS_UPGRADE_BUBBLE_TITLE);
}

bool OutdatedUpgradeBubbleView::ShouldShowCloseButton() const {
  return true;
}

bool OutdatedUpgradeBubbleView::Accept() {
  uma_recorded_ = true;
  // Offset the +1 in the dtor.
  --g_num_ignored_bubbles;
  if (auto_update_enabled_) {
    DCHECK(UpgradeDetector::GetInstance()->is_outdated_install());
    UMA_HISTOGRAM_CUSTOM_COUNTS("OutdatedUpgradeBubble.NumLaterPerReinstall",
                                g_num_ignored_bubbles, 1, kMaxIgnored,
                                kNumIgnoredBuckets);
    base::RecordAction(
        base::UserMetricsAction("OutdatedUpgradeBubble.Reinstall"));
    navigator_->OpenURL(
        content::OpenURLParams(GURL(kDownloadChromeUrl), content::Referrer(),
                               WindowOpenDisposition::NEW_FOREGROUND_TAB,
                               ui::PAGE_TRANSITION_LINK, false));
#if defined(OS_WIN)
  } else {
    DCHECK(UpgradeDetector::GetInstance()->is_outdated_install_no_au());
    UMA_HISTOGRAM_CUSTOM_COUNTS("OutdatedUpgradeBubble.NumLaterPerEnableAU",
                                g_num_ignored_bubbles, 1, kMaxIgnored,
                                kNumIgnoredBuckets);
    base::RecordAction(
        base::UserMetricsAction("OutdatedUpgradeBubble.EnableAU"));
    // Record that the autoupdate flavour of the dialog has been shown.
    if (g_browser_process->local_state()) {
      g_browser_process->local_state()->SetBoolean(
          prefs::kAttemptedToEnableAutoupdate, true);
    }

    // Re-enable updates by shelling out to setup.exe asynchronously.
    base::PostTaskWithTraits(
        FROM_HERE,
        {base::MayBlock(), base::TaskPriority::BEST_EFFORT,
         base::TaskShutdownBehavior::BLOCK_SHUTDOWN},
        base::BindOnce(&google_update::ElevateIfNeededToReenableUpdates));
#endif  // defined(OS_WIN)
  }

  return true;
}

bool OutdatedUpgradeBubbleView::Close() {
  // DialogDelegate::Close() would call Accept(), as there is only one button.
  // Prevent that and record UMA. Note in the past there was also a "Later"
  // button, hence the name.
  if (!uma_recorded_)
    base::RecordAction(base::UserMetricsAction("OutdatedUpgradeBubble.Later"));
  return true;
}

int OutdatedUpgradeBubbleView::GetDialogButtons() const {
  return ui::DIALOG_BUTTON_OK;
}

base::string16 OutdatedUpgradeBubbleView::GetDialogButtonLabel(
    ui::DialogButton button) const {
  return l10n_util::GetStringUTF16(auto_update_enabled_ ? IDS_REINSTALL_APP
                                                        : IDS_REENABLE_UPDATES);
}

void OutdatedUpgradeBubbleView::Init() {
  SetLayoutManager(std::make_unique<views::FillLayout>());
  views::Label* text_label =
      new views::Label(l10n_util::GetStringUTF16(IDS_UPGRADE_BUBBLE_TEXT));
  text_label->SetMultiLine(true);
  text_label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
  text_label->SizeToFit(
      ChromeLayoutProvider::Get()->GetDistanceMetric(
          ChromeDistanceMetric::DISTANCE_BUBBLE_PREFERRED_WIDTH) -
      margins().width());
  AddChildView(text_label);
}

OutdatedUpgradeBubbleView::OutdatedUpgradeBubbleView(
    views::View* anchor_view,
    content::PageNavigator* navigator,
    bool auto_update_enabled)
    : BubbleDialogDelegateView(anchor_view, views::BubbleBorder::TOP_RIGHT),
      auto_update_enabled_(auto_update_enabled),
      navigator_(navigator) {
  chrome::RecordDialogCreation(chrome::DialogIdentifier::OUTDATED_UPGRADE);
}