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// Copyright (c) 2012 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/intents/cws_intents_registry.h"
#include "base/callback.h"
#include "base/json/json_string_value_serializer.h"
#include "base/memory/scoped_ptr.h"
#include "base/stl_util.h"
#include "base/string16.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/intents/api_key.h"
#include "chrome/browser/net/browser_url_util.h"
#include "chrome/browser/net/chrome_url_request_context.h"
#include "chrome/browser/webdata/web_data_service.h"
#include "content/public/common/url_fetcher.h"
#include "net/base/mime_util.h"
#include "net/base/load_flags.h"
namespace {
// URL for CWS intents API. TODO(groby): points to staging, fix for M18 release.
const char kCWSIntentServiceURL[] =
"https://www-googleapis-staging.sandbox.google.com"
"/chromewebstore/v1.1b/items/intent";
} // namespace
// Internal object representing all data associated with a single query.
struct CWSIntentsRegistry::IntentsQuery {
IntentsQuery();
~IntentsQuery();
// Underlying URL request query.
scoped_ptr<content::URLFetcher> url_fetcher;
// The callback - invoked on completed retrieval.
ResultsCallback callback;
};
CWSIntentsRegistry::IntentsQuery::IntentsQuery() {
}
CWSIntentsRegistry::IntentsQuery::~IntentsQuery() {
}
CWSIntentsRegistry::IntentExtensionInfo::IntentExtensionInfo()
: num_ratings(0),
average_rating(0) {
}
CWSIntentsRegistry::IntentExtensionInfo::~IntentExtensionInfo() {
}
CWSIntentsRegistry::CWSIntentsRegistry(net::URLRequestContextGetter* context)
: request_context_(context) {
}
CWSIntentsRegistry::~CWSIntentsRegistry() {
// Cancel all pending queries, since we can't handle them any more.
STLDeleteValues(&queries_);
}
void CWSIntentsRegistry::OnURLFetchComplete(const content::URLFetcher* source) {
DCHECK(source);
URLFetcherHandle handle = reinterpret_cast<URLFetcherHandle>(source);
QueryMap::iterator it = queries_.find(handle);
DCHECK(it != queries_.end());
scoped_ptr<IntentsQuery> query(it->second);
DCHECK(query.get() != NULL);
queries_.erase(it);
std::string response;
source->GetResponseAsString(&response);
// TODO(groby): Do we really only accept 200, or any 2xx codes?
if (source->GetResponseCode() != 200)
return;
std::string error;
scoped_ptr<Value> parsed_response;
JSONStringValueSerializer serializer(response);
parsed_response.reset(serializer.Deserialize(NULL, &error));
if (parsed_response.get() == NULL)
return;
DictionaryValue* response_dict;
parsed_response->GetAsDictionary(&response_dict);
if (!response_dict)
return;
ListValue* items;
if (!response_dict->GetList("items", &items))
return;
IntentExtensionList intents;
for (ListValue::const_iterator iter(items->begin());
iter != items->end(); ++iter) {
DictionaryValue* item = static_cast<DictionaryValue*>(*iter);
// All fields are mandatory - skip this result if we can't find a field.
IntentExtensionInfo info;
if (!item->GetString("id", &info.id))
continue;
if (!item->GetInteger("num_ratings", &info.num_ratings))
continue;
if (!item->GetDouble("average_rating", &info.average_rating))
continue;
if (!item->GetString("manifest", &info.manifest))
continue;
std::string manifest_utf8 = UTF16ToUTF8(info.manifest);
JSONStringValueSerializer manifest_serializer(manifest_utf8);
scoped_ptr<Value> manifest_value;
manifest_value.reset(manifest_serializer.Deserialize(NULL, &error));
if (manifest_value.get() == NULL)
continue;
DictionaryValue* manifest_dict;
manifest_value->GetAsDictionary(&manifest_dict);
if (!manifest_dict->GetString("name", &info.name))
continue;
string16 url_string;
if (!item->GetString("icon_url", &url_string))
continue;
info.icon_url = GURL(url_string);
intents.push_back(info);
}
if (!query->callback.is_null())
query->callback.Run(intents);
}
void CWSIntentsRegistry::GetIntentServices(const string16& action,
const string16& mimetype,
const ResultsCallback& cb) {
scoped_ptr<IntentsQuery> query(new IntentsQuery);
query->callback = cb;
query->url_fetcher.reset(content::URLFetcher::Create(
0, BuildQueryURL(action,mimetype), content::URLFetcher::GET, this));
if (query->url_fetcher.get() == NULL)
return;
query->url_fetcher->SetRequestContext(request_context_);
query->url_fetcher->SetLoadFlags(
net::LOAD_DO_NOT_SEND_COOKIES | net::LOAD_DO_NOT_SAVE_COOKIES);
URLFetcherHandle handle = reinterpret_cast<URLFetcherHandle>(
query->url_fetcher.get());
queries_[handle] = query.release();
queries_[handle]->url_fetcher->Start();
}
// static
GURL CWSIntentsRegistry::BuildQueryURL(const string16& action,
const string16& type) {
GURL request(kCWSIntentServiceURL);
request = chrome_browser_net::AppendQueryParameter(request, "intent",
UTF16ToUTF8(action));
request = chrome_browser_net::AppendQueryParameter(request, "mime_types",
UTF16ToUTF8(type));
if (web_intents::kApiKey[0]) {
request = chrome_browser_net::AppendQueryParameter(request, "key",
web_intents::kApiKey);
}
return request;
}
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