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// Copyright 2016 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.
#ifndef COMPONENTS_NTP_SNIPPETS_PHYSICAL_WEB_PAGES_PHYSICAL_WEB_PAGE_SUGGESTIONS_PROVIDER_H_
#define COMPONENTS_NTP_SNIPPETS_PHYSICAL_WEB_PAGES_PHYSICAL_WEB_PAGE_SUGGESTIONS_PROVIDER_H_
#include <map>
#include <set>
#include <vector>
#include "base/callback_forward.h"
#include "components/ntp_snippets/category.h"
#include "components/ntp_snippets/category_status.h"
#include "components/ntp_snippets/content_suggestion.h"
#include "components/ntp_snippets/content_suggestions_provider.h"
#include "components/physical_web/data_source/physical_web_listener.h"
class GURL;
class PrefRegistrySimple;
class PrefService;
namespace physical_web {
class PhysicalWebDataSource;
struct Metadata;
} // namespace physical_web
namespace ntp_snippets {
// Provides content suggestions from the Physical Web Service.
class PhysicalWebPageSuggestionsProvider
: public ContentSuggestionsProvider,
public physical_web::PhysicalWebListener {
public:
PhysicalWebPageSuggestionsProvider(
ContentSuggestionsProvider::Observer* observer,
physical_web::PhysicalWebDataSource* physical_web_data_source,
PrefService* pref_service);
~PhysicalWebPageSuggestionsProvider() override;
// ContentSuggestionsProvider implementation.
CategoryStatus GetCategoryStatus(Category category) override;
CategoryInfo GetCategoryInfo(Category category) override;
void DismissSuggestion(const ContentSuggestion::ID& suggestion_id) override;
void FetchSuggestionImage(const ContentSuggestion::ID& suggestion_id,
const ImageFetchedCallback& callback) override;
void Fetch(const Category& category,
const std::set<std::string>& known_suggestion_ids,
const FetchDoneCallback& callback) override;
void ClearHistory(
base::Time begin,
base::Time end,
const base::Callback<bool(const GURL& url)>& filter) override;
void ClearCachedSuggestions(Category category) override;
void GetDismissedSuggestionsForDebugging(
Category category,
const DismissedSuggestionsCallback& callback) override;
void ClearDismissedSuggestionsForDebugging(Category category) override;
static void RegisterProfilePrefs(PrefRegistrySimple* registry);
private:
friend class PhysicalWebPageSuggestionsProviderTest;
// Updates the |category_status_| and notifies the |observer_|, if necessary.
void NotifyStatusChanged(CategoryStatus new_status);
// Manually requests all physical web pages and updates the suggestions.
void FetchPhysicalWebPages();
// Returns at most |max_count| ContentSuggestions with IDs not in
// |excluded_ids| and sorted by distance (the closest first). Dismissed
// suggestions are excluded automatically (no need to add them to
// |excluded_ids|) and pruned. The raw pages are obtained from Physical Web
// data source.
std::vector<ContentSuggestion> GetMostRecentPhysicalWebPagesWithFilter(
int max_count,
const std::set<std::string>& excluded_ids);
// Converts an Physical Web page to a ContentSuggestion.
ContentSuggestion ConvertPhysicalWebPage(
const physical_web::Metadata& page) const;
// PhysicalWebListener implementation.
void OnFound(const GURL& url) override;
void OnLost(const GURL& url) override;
void OnDistanceChanged(const GURL& url, double distance_estimate) override;
// Fires the |OnSuggestionInvalidated| event for the suggestion corresponding
// to the given |page_id| and deletes it from the dismissed IDs list, if
// necessary.
void InvalidateSuggestion(const std::string& page_id);
void AppendToShownScannedUrls(
const std::vector<ContentSuggestion>& suggestions);
// Reads dismissed IDs from Prefs.
std::set<std::string> ReadDismissedIDsFromPrefs() const;
// Writes |dismissed_ids| into Prefs.
void StoreDismissedIDsToPrefs(const std::set<std::string>& dismissed_ids);
std::multimap<GURL, GURL> shown_resolved_urls_by_scanned_url_;
CategoryStatus category_status_;
const Category provided_category_;
physical_web::PhysicalWebDataSource* physical_web_data_source_;
PrefService* pref_service_;
DISALLOW_COPY_AND_ASSIGN(PhysicalWebPageSuggestionsProvider);
};
} // namespace ntp_snippets
#endif // COMPONENTS_NTP_SNIPPETS_PHYSICAL_WEB_PAGES_PHYSICAL_WEB_PAGE_SUGGESTIONS_PROVIDER_H_
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