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// Copyright 2024 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/commerce/core/compare/cluster_server_proxy.h"
#include <utility>
#include "base/json/json_reader.h"
#include "base/json/values_util.h"
#include "base/strings/string_number_conversions.h"
#include "components/commerce/core/account_checker.h"
#include "components/commerce/core/commerce_constants.h"
#include "components/commerce/core/commerce_feature_list.h"
#include "components/commerce/core/compare/compare_utils.h"
#include "components/commerce/core/feature_utils.h"
#include "components/signin/public/identity_manager/identity_manager.h"
#include "net/http/http_request_headers.h"
#include "net/http/http_status_code.h"
#include "net/traffic_annotation/network_traffic_annotation.h"
#include "services/network/public/cpp/resource_request.h"
#include "services/network/public/cpp/shared_url_loader_factory.h"
#include "services/network/public/cpp/simple_url_loader.h"
using endpoint_fetcher::EndpointFetcher;
using endpoint_fetcher::EndpointResponse;
namespace commerce {
namespace {
// RPC timeout duration.
const int kTimeoutMs = 5000;
// URL to get compare result.
const char kDefaultServiceBaseUrl[] =
"https://memex-pa.googleapis.com/v1/shopping/products:related";
const char kBaseUrlParam[] = "cluster_service_base_url";
constexpr base::FeatureParam<std::string> kServiceBaseUrl{
&commerce::kProductSpecifications, kBaseUrlParam, kDefaultServiceBaseUrl};
// lowerCamelCase JSON proto message keys.
const char kProductIdsKey[] = "productIds";
const char kTypeKey[] = "type";
const char kGPCTypeName[] = "GLOBAL_PRODUCT_CLUSTER_ID";
const char kIdentifierKey[] = "identifier";
constexpr net::NetworkTrafficAnnotationTag
kGetComparableProductsTrafficAnnotation =
net::DefineNetworkTrafficAnnotation(
"chrome_commerce_comparable_products",
R"(
semantics {
sender: "Chrome Shopping"
description:
"Ask server for comparable products from a list of product Ids."
trigger:
"A Chrome-initiated request that requires user enabling the "
"Tab Compare feature. The request is sent after Chrome detects "
"several open tabs has similar products, before showing the user"
"a button to allow them to compare some of the products."
user_data {
type: OTHER
type: ACCESS_TOKEN
}
data:
"Product cluster IDs obtained previously from the Google server "
"for product pages user opened."
destination: GOOGLE_OWNED_SERVICE
internal {
contacts { email: "chrome-shopping-eng@google.com" }
}
last_reviewed: "2024-06-10"
}
policy {
cookies_allowed: NO
setting:
"This fetch is enabled for any user that is eligible to use this "
"feature based on things like country, locale, and whether the "
"user is signed in. The request is enabled with the Tab Compare "
"feature."
chrome_policy {
TabCompareSettings {
policy_options {mode: MANDATORY}
TabCompareSettings: 2
}
}
}
)");
// Deserializes a product cluster ID from JSON.
std::optional<uint64_t> Deserialize(const base::Value& value) {
if (!value.is_dict()) {
return std::nullopt;
}
const base::Value::Dict& value_dict = value.GetDict();
auto* type = value_dict.FindString(kTypeKey);
if (!type || *type != kGPCTypeName) {
return std::nullopt;
}
auto* identifier = value_dict.FindString(kIdentifierKey);
uint64_t product_cluster_id;
if (!identifier || !base::StringToUint64(*identifier, &product_cluster_id)) {
return std::nullopt;
}
return product_cluster_id;
}
} // namespace
ClusterServerProxy::ClusterServerProxy(
signin::IdentityManager* identity_manager,
const scoped_refptr<network::SharedURLLoaderFactory>& url_loader_factory,
AccountChecker* account_checker)
: identity_manager_(identity_manager),
url_loader_factory_(url_loader_factory),
account_checker_(account_checker) {}
ClusterServerProxy::~ClusterServerProxy() = default;
void ClusterServerProxy::GetComparableProducts(
const std::vector<uint64_t>& product_cluster_ids,
GetComparableProductsCallback callback) {
if (!commerce::CanFetchProductSpecificationsData(account_checker_)) {
std::move(callback).Run(std::vector<uint64_t>());
return;
}
auto fetcher = CreateEndpointFetcher(
GURL(kServiceBaseUrl.Get()),
GetJsonStringForProductClusterIds(product_cluster_ids));
auto* const fetcher_ptr = fetcher.get();
fetcher_ptr->Fetch(base::BindOnce(&ClusterServerProxy::HandleCompareResponse,
weak_ptr_factory_.GetWeakPtr(),
std::move(callback), std::move(fetcher)));
}
std::unique_ptr<EndpointFetcher> ClusterServerProxy::CreateEndpointFetcher(
const GURL& url,
const std::string& post_data) {
return std::make_unique<EndpointFetcher>(
url_loader_factory_, kOAuthName, url, kPostHttpMethod, kContentType,
std::vector<std::string>{kOAuthScope}, base::Milliseconds(kTimeoutMs),
post_data, kGetComparableProductsTrafficAnnotation, identity_manager_,
signin::ConsentLevel::kSync);
}
void ClusterServerProxy::HandleCompareResponse(
GetComparableProductsCallback callback,
std::unique_ptr<EndpointFetcher> endpoint_fetcher,
std::unique_ptr<EndpointResponse> response) {
if (response->http_status_code != net::HTTP_OK || response->error_type) {
VLOG(1) << "Got bad response (" << response->http_status_code
<< ") for comparable products!";
std::move(callback).Run(std::vector<uint64_t>());
return;
}
data_decoder::DataDecoder::ParseJsonIsolated(
response->response,
base::BindOnce(&ClusterServerProxy::OnResponseJsonParsed,
weak_ptr_factory_.GetWeakPtr(), std::move(callback)));
}
void ClusterServerProxy::OnResponseJsonParsed(
GetComparableProductsCallback callback,
data_decoder::DataDecoder::ValueOrError result) {
std::vector<uint64_t> product_cluster_ids;
if (result.has_value() && result->is_dict()) {
if (auto* response_json = result->GetDict().FindList(kProductIdsKey)) {
for (const auto& product_id_json : *response_json) {
if (auto product_id = Deserialize(product_id_json)) {
product_cluster_ids.push_back(*product_id);
}
}
}
}
std::move(callback).Run(std::move(product_cluster_ids));
}
} // namespace commerce
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