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// Copyright 2023 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/content/renderer/commerce_web_extractor.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "third_party/blink/public/web/web_element.h"
#include "third_party/blink/public/web/web_element_collection.h"
#include "third_party/blink/public/web/web_local_frame.h"
namespace commerce {
namespace {
const char kOgContent[] = "content";
const char kOgPrefix[] = "og:";
const char kOgProperty[] = "property";
const char kPageMeta[] = "meta";
} // namespace
CommerceWebExtractor::CommerceWebExtractor(
content::RenderFrame* render_frame,
service_manager::BinderRegistry* registry)
: content::RenderFrameObserver(render_frame), render_frame_(render_frame) {
registry->AddInterface(base::BindRepeating(
&CommerceWebExtractor::BindReceiver, base::Unretained(this)));
}
CommerceWebExtractor::~CommerceWebExtractor() = default;
void CommerceWebExtractor::ExtractMetaInfo(ExtractMetaInfoCallback callback) {
auto result = base::Value::Dict();
blink::WebDocument doc = render_frame_->GetWebFrame()->GetDocument();
blink::WebElementCollection collection =
doc.GetElementsByHTMLTagName(kPageMeta);
for (blink::WebElement element = collection.FirstItem(); !element.IsNull();
element = collection.NextItem()) {
if (!element.HasAttribute(kOgProperty) ||
!element.HasAttribute(kOgContent)) {
continue;
}
std::string name =
base::UTF16ToUTF8(element.GetAttribute(kOgProperty).Utf16());
std::string value =
base::UTF16ToUTF8(element.GetAttribute(kOgContent).Utf16());
if (base::StartsWith(name, kOgPrefix)) {
result.Set(name.substr(3), value);
}
}
std::move(callback).Run(base::Value(std::move(result)));
}
void CommerceWebExtractor::BindReceiver(
mojo::PendingReceiver<commerce_web_extractor::mojom::CommerceWebExtractor>
receiver) {
receiver_.reset();
receiver_.Bind(std::move(receiver));
}
void CommerceWebExtractor::OnDestruct() {
delete this;
}
} // namespace commerce
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