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// Copyright 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/bookmarks/enhanced_bookmarks_features.h"
#include "base/command_line.h"
#include "base/metrics/histogram.h"
#include "base/prefs/pref_service.h"
#include "base/prefs/scoped_user_pref_update.h"
#include "base/sha1.h"
#include "base/strings/string_number_conversions.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/pref_names.h"
#include "components/sync_driver/pref_names.h"
#include "components/variations/variations_associated_data.h"
#include "extensions/common/features/feature.h"
#include "extensions/common/features/feature_provider.h"
namespace {
const char kFieldTrialName[] = "EnhancedBookmarks";
// Get extension id from Finch EnhancedBookmarks group parameters.
std::string GetEnhancedBookmarksExtensionIdFromFinch() {
return chrome_variations::GetVariationParamValue(kFieldTrialName, "id");
}
// Returns true if enhanced bookmarks experiment is enabled from Finch.
bool IsEnhancedBookmarksExperimentEnabledFromFinch() {
std::string ext_id = GetEnhancedBookmarksExtensionIdFromFinch();
extensions::FeatureProvider* feature_provider =
extensions::FeatureProvider::GetPermissionFeatures();
extensions::Feature* feature = feature_provider->GetFeature("metricsPrivate");
return feature && feature->IsIdInWhitelist(ext_id);
}
}; // namespace
bool GetBookmarksExperimentExtensionID(const PrefService* user_prefs,
std::string* extension_id) {
BookmarksExperimentState bookmarks_experiment_state =
static_cast<BookmarksExperimentState>(user_prefs->GetInteger(
sync_driver::prefs::kEnhancedBookmarksExperimentEnabled));
if (bookmarks_experiment_state == kBookmarksExperimentEnabledFromFinch) {
*extension_id = GetEnhancedBookmarksExtensionIdFromFinch();
return !extension_id->empty();
}
if (bookmarks_experiment_state == kBookmarksExperimentEnabled) {
*extension_id = user_prefs->GetString(
sync_driver::prefs::kEnhancedBookmarksExtensionId);
return !extension_id->empty();
}
return false;
}
void UpdateBookmarksExperimentState(PrefService* user_prefs,
PrefService* local_state,
bool user_signed_in) {
BookmarksExperimentState bookmarks_experiment_state_before =
static_cast<BookmarksExperimentState>(user_prefs->GetInteger(
sync_driver::prefs::kEnhancedBookmarksExperimentEnabled));
// If user signed out, clear possible previous state.
if (!user_signed_in) {
bookmarks_experiment_state_before = kNoBookmarksExperiment;
ForceFinchBookmarkExperimentIfNeeded(local_state, kNoBookmarksExperiment);
}
// kEnhancedBookmarksExperiment flag could have values "", "1" and "0".
// "0" - user opted out.
bool opt_out = CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
switches::kEnhancedBookmarksExperiment) == "0";
BookmarksExperimentState bookmarks_experiment_new_state =
kNoBookmarksExperiment;
bool enabled_from_finch = false;
if (IsEnhancedBookmarksExperimentEnabledFromFinch()) {
enabled_from_finch = !user_signed_in;
if (user_signed_in) {
bookmarks_experiment_new_state =
kBookmarksExperimentEnabledFromFinchUserSignedIn;
}
}
if (enabled_from_finch) {
if (opt_out) {
// Experiment enabled but user opted out.
bookmarks_experiment_new_state = kBookmarksExperimentOptOutFromFinch;
} else {
// Experiment enabled.
bookmarks_experiment_new_state = kBookmarksExperimentEnabledFromFinch;
}
} else if (bookmarks_experiment_state_before == kBookmarksExperimentEnabled) {
if (opt_out) {
// Experiment enabled but user opted out.
bookmarks_experiment_new_state = kBookmarksExperimentEnabledUserOptOut;
} else {
bookmarks_experiment_new_state = kBookmarksExperimentEnabled;
}
} else if (bookmarks_experiment_state_before ==
kBookmarksExperimentEnabledUserOptOut) {
if (opt_out) {
bookmarks_experiment_new_state = kBookmarksExperimentEnabledUserOptOut;
} else {
// User opted in again.
bookmarks_experiment_new_state = kBookmarksExperimentEnabled;
}
}
UMA_HISTOGRAM_ENUMERATION("EnhancedBookmarks.SyncExperimentState",
bookmarks_experiment_new_state,
kBookmarksExperimentEnumSize);
user_prefs->SetInteger(
sync_driver::prefs::kEnhancedBookmarksExperimentEnabled,
bookmarks_experiment_new_state);
if (bookmarks_experiment_state_before != bookmarks_experiment_new_state)
ForceFinchBookmarkExperimentIfNeeded(local_state,
bookmarks_experiment_new_state);
}
void ForceFinchBookmarkExperimentIfNeeded(
PrefService* local_state,
BookmarksExperimentState bookmarks_experiment_state) {
// Chrome OS doesnt use local storage for experiments flags.
#if !defined(OS_CHROMEOS)
if (!local_state)
return;
ListPrefUpdate update(local_state, prefs::kEnabledLabsExperiments);
base::ListValue* experiments_list = update.Get();
if (!experiments_list)
return;
size_t index;
if (bookmarks_experiment_state == kNoBookmarksExperiment) {
experiments_list->Remove(
base::StringValue(switches::kManualEnhancedBookmarks), &index);
experiments_list->Remove(
base::StringValue(switches::kManualEnhancedBookmarksOptout), &index);
} else if (bookmarks_experiment_state == kBookmarksExperimentEnabled) {
experiments_list->Remove(
base::StringValue(switches::kManualEnhancedBookmarksOptout), &index);
experiments_list->AppendIfNotPresent(
new base::StringValue(switches::kManualEnhancedBookmarks));
} else if (bookmarks_experiment_state ==
kBookmarksExperimentEnabledUserOptOut) {
experiments_list->Remove(
base::StringValue(switches::kManualEnhancedBookmarks), &index);
experiments_list->AppendIfNotPresent(
new base::StringValue(switches::kManualEnhancedBookmarksOptout));
}
#endif
}
bool IsEnhancedBookmarksExperimentEnabled() {
CommandLine* command_line = CommandLine::ForCurrentProcess();
if (command_line->HasSwitch(switches::kManualEnhancedBookmarks) ||
command_line->HasSwitch(switches::kManualEnhancedBookmarksOptout)) {
return true;
}
return IsEnhancedBookmarksExperimentEnabledFromFinch();
}
bool IsEnableDomDistillerSet() {
if (CommandLine::ForCurrentProcess()->
HasSwitch(switches::kEnableDomDistiller)) {
return true;
}
if (chrome_variations::GetVariationParamValue(
kFieldTrialName, "enable-dom-distiller") == "1")
return true;
return false;
}
bool IsEnableSyncArticlesSet() {
if (CommandLine::ForCurrentProcess()->
HasSwitch(switches::kEnableSyncArticles)) {
return true;
}
if (chrome_variations::GetVariationParamValue(
kFieldTrialName, "enable-sync-articles") == "1")
return true;
return false;
}
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