63 lines
		
	
	
	
		
			1.4 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			63 lines
		
	
	
	
		
			1.4 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#pragma once
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#include "data/data_user_names.h"
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#include "mtproto/sender.h"
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class ApiWrap;
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class PeerData;
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namespace Main {
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class Session;
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} // namespace Main
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namespace Api {
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class Usernames final {
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public:
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	enum class Error {
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		TooMuch,
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		Unknown,
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	};
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	explicit Usernames(not_null<ApiWrap*> api);
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	[[nodiscard]] rpl::producer<Data::Usernames> loadUsernames(
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		not_null<PeerData*> peer) const;
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	[[nodiscard]] rpl::producer<rpl::no_value, Error> toggle(
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		not_null<PeerData*> peer,
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		const QString &username,
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		bool active);
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	[[nodiscard]] rpl::producer<> reorder(
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		not_null<PeerData*> peer,
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		const std::vector<QString> &usernames);
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	void requestToCache(not_null<PeerData*> peer);
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	[[nodiscard]] Data::Usernames cacheFor(PeerId id);
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	static Data::Usernames FromTL(const MTPVector<MTPUsername> &usernames);
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private:
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	const not_null<Main::Session*> _session;
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	MTP::Sender _api;
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	using Key = PeerId;
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	struct Entry final {
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		rpl::event_stream<rpl::no_value, Error> done;
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		std::vector<QString> usernames;
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	};
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	base::flat_map<Key, Entry> _toggleRequests;
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	base::flat_map<Key, mtpRequestId> _reorderRequests;
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	// Used for a seamless display of usernames list.
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	std::pair<Key, Data::Usernames> _tinyCache;
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};
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} // namespace Api
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