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// Copyright 2017 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 "components/ntp_snippets/breaking_news/breaking_news_gcm_app_handler.h"
#include "base/strings/string_util.h"
#include "components/gcm_driver/gcm_driver.h"
#include "components/gcm_driver/gcm_profile_service.h"
#include "components/gcm_driver/instance_id/instance_id.h"
#include "components/gcm_driver/instance_id/instance_id_driver.h"
#include "components/ntp_snippets/pref_names.h"
using instance_id::InstanceID;
namespace ntp_snippets {
const char kBreakingNewsGCMAppID[] = "com.google.breakingnews.gcm";
// The sender ID is used in the registration process.
// See: https://developers.google.com/cloud-messaging/gcm#senderid
const char kBreakingNewsGCMSenderId[] = "667617379155";
// OAuth2 Scope passed to getToken to obtain GCM registration tokens.
// Must match Java GoogleCloudMessaging.INSTANCE_ID_SCOPE.
const char kGCMScope[] = "GCM";
// Key of the news json in the data in the pushed breaking news.
const char kPushedNewsKey[] = "payload";
BreakingNewsGCMAppHandler::BreakingNewsGCMAppHandler(
gcm::GCMDriver* gcm_driver,
instance_id::InstanceIDDriver* instance_id_driver,
PrefService* pref_service,
std::unique_ptr<SubscriptionManager> subscription_manager,
const ParseJSONCallback& parse_json_callback)
: gcm_driver_(gcm_driver),
instance_id_driver_(instance_id_driver),
pref_service_(pref_service),
subscription_manager_(std::move(subscription_manager)),
parse_json_callback_(parse_json_callback),
weak_ptr_factory_(this) {}
BreakingNewsGCMAppHandler::~BreakingNewsGCMAppHandler() {
StopListening();
}
void BreakingNewsGCMAppHandler::StartListening(
OnNewContentCallback on_new_content_callback) {
#if !defined(OS_ANDROID)
NOTREACHED()
<< "The BreakingNewsGCMAppHandler should only be used on Android.";
#endif
Subscribe();
on_new_content_callback_ = std::move(on_new_content_callback);
gcm_driver_->AddAppHandler(kBreakingNewsGCMAppID, this);
}
void BreakingNewsGCMAppHandler::StopListening() {
DCHECK_EQ(gcm_driver_->GetAppHandler(kBreakingNewsGCMAppID), this);
gcm_driver_->RemoveAppHandler(kBreakingNewsGCMAppID);
on_new_content_callback_ = OnNewContentCallback();
subscription_manager_->Unsubscribe();
}
void BreakingNewsGCMAppHandler::Subscribe() {
// TODO(mamir): This logic should be moved to the SubscriptionManager.
std::string token =
pref_service_->GetString(prefs::kBreakingNewsGCMSubscriptionTokenCache);
// If a token has been already obtained, subscribe directly at the content
// suggestions server. Otherwise, obtain a GCM token first.
if (!token.empty()) {
if (!subscription_manager_->IsSubscribed() ||
subscription_manager_->NeedsToResubscribe()) {
subscription_manager_->Subscribe(token);
}
return;
}
instance_id_driver_->GetInstanceID(kBreakingNewsGCMAppID)
->GetToken(kBreakingNewsGCMSenderId, kGCMScope,
/*options=*/std::map<std::string, std::string>(),
base::Bind(&BreakingNewsGCMAppHandler::DidSubscribe,
weak_ptr_factory_.GetWeakPtr()));
}
void BreakingNewsGCMAppHandler::DidSubscribe(
const std::string& subscription_token,
InstanceID::Result result) {
switch (result) {
case InstanceID::SUCCESS:
pref_service_->SetString(prefs::kBreakingNewsGCMSubscriptionTokenCache,
subscription_token);
subscription_manager_->Subscribe(subscription_token);
return;
case InstanceID::INVALID_PARAMETER:
case InstanceID::DISABLED:
case InstanceID::ASYNC_OPERATION_PENDING:
case InstanceID::SERVER_ERROR:
case InstanceID::UNKNOWN_ERROR:
DLOG(WARNING)
<< "Push messaging subscription failed; InstanceID::Result = "
<< result;
break;
case InstanceID::NETWORK_ERROR:
break;
}
}
void BreakingNewsGCMAppHandler::ShutdownHandler() {}
void BreakingNewsGCMAppHandler::OnStoreReset() {
pref_service_->ClearPref(prefs::kBreakingNewsGCMSubscriptionTokenCache);
}
void BreakingNewsGCMAppHandler::OnMessage(const std::string& app_id,
const gcm::IncomingMessage& message) {
DCHECK_EQ(app_id, kBreakingNewsGCMAppID);
gcm::MessageData::const_iterator it = message.data.find(kPushedNewsKey);
if (it == message.data.end()) {
LOG(WARNING)
<< "Receiving pushed content failure: Breaking News ID missing.";
return;
}
std::string news = it->second;
parse_json_callback_.Run(news,
base::Bind(&BreakingNewsGCMAppHandler::OnJsonSuccess,
weak_ptr_factory_.GetWeakPtr()),
base::Bind(&BreakingNewsGCMAppHandler::OnJsonError,
weak_ptr_factory_.GetWeakPtr(), news));
}
void BreakingNewsGCMAppHandler::OnMessagesDeleted(const std::string& app_id) {
// Messages don't get deleted.
NOTREACHED() << "BreakingNewsGCMAppHandler messages don't get deleted.";
}
void BreakingNewsGCMAppHandler::OnSendError(
const std::string& app_id,
const gcm::GCMClient::SendErrorDetails& details) {
// Should never be called because we don't send GCM messages to
// the server.
NOTREACHED() << "BreakingNewsGCMAppHandler doesn't send GCM messages.";
}
void BreakingNewsGCMAppHandler::OnSendAcknowledged(
const std::string& app_id,
const std::string& message_id) {
// Should never be called because we don't send GCM messages to
// the server.
NOTREACHED() << "BreakingNewsGCMAppHandler doesn't send GCM messages.";
}
void BreakingNewsGCMAppHandler::RegisterProfilePrefs(
PrefRegistrySimple* registry) {
registry->RegisterStringPref(prefs::kBreakingNewsGCMSubscriptionTokenCache,
std::string());
}
void BreakingNewsGCMAppHandler::OnJsonSuccess(
std::unique_ptr<base::Value> content) {
on_new_content_callback_.Run(std::move(content));
}
void BreakingNewsGCMAppHandler::OnJsonError(const std::string& json_str,
const std::string& error) {
LOG(WARNING) << "Error parsing JSON:" << error
<< " when parsing:" << json_str;
}
} // namespace ntp_snippets
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