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// Copyright 2018 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/contextual/contextual_content_suggestions_service_proxy.h"
#include <utility>
#include "base/bind.h"
#include "base/strings/stringprintf.h"
#include "base/threading/thread_task_runner_handle.h"
#include "ui/gfx/image/image.h"
#include "url/gurl.h"
namespace contextual_suggestions {
namespace {
// TODO(pnoland): check if this is the correct base URL for all images.
static constexpr char kImageURLFormat[] =
"http://www.google.com/images?q=tbn:%s";
GURL ImageUrlFromId(const std::string& image_id) {
return GURL(base::StringPrintf(kImageURLFormat, image_id.c_str()));
}
} // namespace
ContextualContentSuggestionsServiceProxy::
ContextualContentSuggestionsServiceProxy(
ContextualContentSuggestionsService* service,
std::unique_ptr<ContextualSuggestionsReporter> reporter)
: service_(service),
reporter_(std::move(reporter)),
last_ukm_source_id_(ukm::kInvalidSourceId),
weak_ptr_factory_(this) {}
ContextualContentSuggestionsServiceProxy::
~ContextualContentSuggestionsServiceProxy() {}
void ContextualContentSuggestionsServiceProxy::FetchContextualSuggestions(
const GURL& url,
FetchClustersCallback callback) {
service_->FetchContextualSuggestionClusters(
url,
base::BindOnce(
&ContextualContentSuggestionsServiceProxy::CacheSuggestions,
weak_ptr_factory_.GetWeakPtr(), std::move(callback)),
base::BindRepeating(
&ContextualContentSuggestionsServiceProxy::ReportEvent,
weak_ptr_factory_.GetWeakPtr(), last_ukm_source_id_, url.spec()));
}
void ContextualContentSuggestionsServiceProxy::FetchContextualSuggestionImage(
const std::string& suggestion_id,
ntp_snippets::ImageFetchedCallback callback) {
auto suggestion_iter = suggestions_.find(suggestion_id);
if (suggestion_iter == suggestions_.end()) {
DVLOG(1) << "Unkown suggestion ID: " << suggestion_id;
base::ThreadTaskRunnerHandle::Get()->PostTask(
FROM_HERE, base::BindOnce(std::move(callback), gfx::Image()));
return;
}
std::string& image_id = suggestion_iter->second.image_id;
GURL image_url = ImageUrlFromId(image_id);
FetchImageImpl(image_url, image_id, std::move(callback));
}
void ContextualContentSuggestionsServiceProxy::FetchContextualSuggestionFavicon(
const std::string& suggestion_id,
ntp_snippets::ImageFetchedCallback callback) {
auto suggestion_iter = suggestions_.find(suggestion_id);
if (suggestion_iter == suggestions_.end()) {
DVLOG(1) << "Unkown suggestion ID: " << suggestion_id;
base::ThreadTaskRunnerHandle::Get()->PostTask(
FROM_HERE, base::BindOnce(std::move(callback), gfx::Image()));
return;
}
FetchImageImpl(GURL(suggestion_iter->second.favicon_image_url),
suggestion_iter->second.favicon_image_id, std::move(callback));
}
void ContextualContentSuggestionsServiceProxy::ClearState() {
suggestions_.clear();
weak_ptr_factory_.InvalidateWeakPtrs();
}
void ContextualContentSuggestionsServiceProxy::ReportEvent(
ukm::SourceId ukm_source_id,
const std::string& url,
ContextualSuggestionsEvent event) {
// TODO(pnoland): investigate how we can get into this state(one known
// example is if we switch tabs and there's no committed navigation in the new
// tab) and prevent it from happening. Replace the early return with a DCHECK
// once this is done.
if (ukm_source_id == ukm::kInvalidSourceId) {
return;
}
// Flush the previous page (if any) and setup the new page.
if (ukm_source_id != last_ukm_source_id_) {
if (last_ukm_source_id_ != ukm::kInvalidSourceId)
reporter_->Flush();
last_ukm_source_id_ = ukm_source_id;
reporter_->SetupForPage(url, ukm_source_id);
}
reporter_->RecordEvent(event);
}
void ContextualContentSuggestionsServiceProxy::FlushMetrics() {
if (last_ukm_source_id_ != ukm::kInvalidSourceId)
reporter_->Flush();
last_ukm_source_id_ = ukm::kInvalidSourceId;
}
void ContextualContentSuggestionsServiceProxy::FetchImageImpl(
const GURL& image_url,
const std::string& image_id,
ntp_snippets::ImageFetchedCallback callback) {
ntp_snippets::ContentSuggestion::ID synthetic_cache_id(
ntp_snippets::Category::FromKnownCategory(
ntp_snippets::KnownCategories::CONTEXTUAL),
image_id);
service_->FetchContextualSuggestionImage(synthetic_cache_id, image_url,
std::move(callback));
}
void ContextualContentSuggestionsServiceProxy::CacheSuggestions(
FetchClustersCallback callback,
ContextualSuggestionsResult result) {
suggestions_.clear();
for (auto& cluster : result.clusters) {
for (auto& suggestion : cluster.suggestions) {
suggestions_.emplace(std::make_pair(suggestion.id, suggestion));
}
}
std::move(callback).Run(std::move(result));
}
} // namespace contextual_suggestions
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