346 lines
		
	
	
	
		
			9.1 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			346 lines
		
	
	
	
		
			9.1 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 "base/flags.h"
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class History;
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class PeerData;
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class HistoryItem;
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namespace Dialogs {
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class Entry;
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} // namespace Dialogs
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namespace Main {
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class Session;
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} // namespace Main
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namespace Data::details {
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template <typename Flag>
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inline constexpr int CountBit(Flag Last = Flag::LastUsedBit) {
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	auto i = 0;
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	while ((1ULL << i) != static_cast<uint64>(Last)) {
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		++i;
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		Assert(i != 64);
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	}
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	return i;
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}
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} // namespace Data::details
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namespace Data {
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class ForumTopic;
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struct NameUpdate {
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	NameUpdate(
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		not_null<PeerData*> peer,
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		base::flat_set<QChar> oldFirstLetters)
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	: peer(peer)
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	, oldFirstLetters(std::move(oldFirstLetters)) {
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	}
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	not_null<PeerData*> peer;
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	base::flat_set<QChar> oldFirstLetters;
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};
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struct PeerUpdate {
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	enum class Flag : uint64 {
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		None = 0,
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		// Common flags
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		Name              = (1ULL << 0),
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		Username          = (1ULL << 1),
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		Photo             = (1ULL << 2),
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		About             = (1ULL << 3),
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		Notifications     = (1ULL << 4),
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		Migration         = (1ULL << 5),
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		UnavailableReason = (1ULL << 6),
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		ChatThemeEmoji    = (1ULL << 7),
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		IsBlocked         = (1ULL << 8),
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		MessagesTTL       = (1ULL << 9),
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		FullInfo          = (1ULL << 10),
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		Usernames         = (1ULL << 11),
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		// For users
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		CanShareContact   = (1ULL << 11),
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		IsContact         = (1ULL << 12),
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		PhoneNumber       = (1ULL << 13),
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		OnlineStatus      = (1ULL << 14),
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		BotCommands       = (1ULL << 15),
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		BotCanBeInvited   = (1ULL << 16),
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		BotStartToken     = (1ULL << 17),
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		CommonChats       = (1ULL << 18),
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		HasCalls          = (1ULL << 19),
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		SupportInfo       = (1ULL << 20),
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		IsBot             = (1ULL << 21),
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		EmojiStatus       = (1ULL << 22),
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		// For chats and channels
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		InviteLinks       = (1ULL << 23),
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		Members           = (1ULL << 24),
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		Admins            = (1ULL << 25),
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		BannedUsers       = (1ULL << 26),
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		Rights            = (1ULL << 27),
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		PendingRequests   = (1ULL << 28),
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		Reactions         = (1ULL << 29),
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		// For channels
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		ChannelAmIn       = (1ULL << 30),
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		StickersSet       = (1ULL << 31),
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		ChannelLinkedChat = (1ULL << 32),
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		ChannelLocation   = (1ULL << 33),
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		Slowmode          = (1ULL << 34),
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		GroupCall         = (1ULL << 35),
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		// For iteration
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		LastUsedBit       = (1ULL << 35),
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	};
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	using Flags = base::flags<Flag>;
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	friend inline constexpr auto is_flag_type(Flag) { return true; }
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	not_null<PeerData*> peer;
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	Flags flags = 0;
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};
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struct HistoryUpdate {
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	enum class Flag : uint32 {
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		None = 0,
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		IsPinned           = (1U << 0),
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		UnreadView         = (1U << 1),
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		TopPromoted        = (1U << 2),
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		Folder             = (1U << 3),
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		UnreadMentions     = (1U << 4),
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		UnreadReactions    = (1U << 5),
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		ClientSideMessages = (1U << 6),
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		ChatOccupied       = (1U << 7),
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		MessageSent        = (1U << 8),
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		ScheduledSent      = (1U << 9),
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		OutboxRead         = (1U << 10),
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		BotKeyboard        = (1U << 11),
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		CloudDraft         = (1U << 12),
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		LastUsedBit        = (1U << 12),
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	};
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	using Flags = base::flags<Flag>;
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	friend inline constexpr auto is_flag_type(Flag) { return true; }
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	not_null<History*> history;
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	Flags flags = 0;
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};
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struct TopicUpdate {
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	enum class Flag : uint32 {
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		None = 0,
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		UnreadView = (1U << 1),
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		UnreadMentions = (1U << 2),
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		UnreadReactions = (1U << 3),
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		Notifications = (1U << 4),
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		Title = (1U << 5),
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		IconId = (1U << 6),
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		ColorId = (1U << 7),
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		CloudDraft = (1U << 8),
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		Closed = (1U << 9),
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		Creator = (1U << 10),
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		LastUsedBit = (1U << 10),
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	};
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	using Flags = base::flags<Flag>;
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	friend inline constexpr auto is_flag_type(Flag) { return true; }
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	not_null<ForumTopic*> topic;
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	Flags flags = 0;
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};
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struct MessageUpdate {
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	enum class Flag : uint32 {
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		None = 0,
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		Edited             = (1U << 0),
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		Destroyed          = (1U << 1),
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		DialogRowRepaint   = (1U << 2),
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		DialogRowRefresh   = (1U << 3),
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		NewAdded           = (1U << 4),
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		ReplyMarkup        = (1U << 5),
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		BotCallbackSent    = (1U << 6),
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		NewMaybeAdded      = (1U << 7),
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		ReplyToTopAdded    = (1U << 8),
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		NewUnreadReaction  = (1U << 9),
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		LastUsedBit        = (1U << 9),
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	};
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	using Flags = base::flags<Flag>;
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	friend inline constexpr auto is_flag_type(Flag) { return true; }
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	not_null<HistoryItem*> item;
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	Flags flags = 0;
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};
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struct EntryUpdate {
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	enum class Flag : uint32 {
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		None = 0,
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		Repaint = (1U << 0),
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		HasPinnedMessages = (1U << 1),
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		ForwardDraft = (1U << 2),
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		LocalDraftSet = (1U << 3),
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		Height = (1U << 4),
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		LastUsedBit = (1U << 4),
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	};
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	using Flags = base::flags<Flag>;
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	friend inline constexpr auto is_flag_type(Flag) { return true; }
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	not_null<Dialogs::Entry*> entry;
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	Flags flags = 0;
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};
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class Changes final {
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public:
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	explicit Changes(not_null<Main::Session*> session);
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	[[nodiscard]] Main::Session &session() const;
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	void nameUpdated(
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		not_null<PeerData*> peer,
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		base::flat_set<QChar> oldFirstLetters);
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	[[nodiscard]] rpl::producer<NameUpdate> realtimeNameUpdates() const;
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	[[nodiscard]] rpl::producer<NameUpdate> realtimeNameUpdates(
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		not_null<PeerData*> peer) const;
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	void peerUpdated(not_null<PeerData*> peer, PeerUpdate::Flags flags);
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	[[nodiscard]] rpl::producer<PeerUpdate> peerUpdates(
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		PeerUpdate::Flags flags) const;
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	[[nodiscard]] rpl::producer<PeerUpdate> peerUpdates(
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		not_null<PeerData*> peer,
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		PeerUpdate::Flags flags) const;
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	[[nodiscard]] rpl::producer<PeerUpdate> peerFlagsValue(
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		not_null<PeerData*> peer,
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		PeerUpdate::Flags flags) const;
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	[[nodiscard]] rpl::producer<PeerUpdate> realtimePeerUpdates(
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		PeerUpdate::Flag flag) const;
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	void historyUpdated(
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		not_null<History*> history,
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		HistoryUpdate::Flags flags);
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	[[nodiscard]] rpl::producer<HistoryUpdate> historyUpdates(
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		HistoryUpdate::Flags flags) const;
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	[[nodiscard]] rpl::producer<HistoryUpdate> historyUpdates(
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		not_null<History*> history,
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		HistoryUpdate::Flags flags) const;
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	[[nodiscard]] rpl::producer<HistoryUpdate> historyFlagsValue(
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		not_null<History*> history,
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		HistoryUpdate::Flags flags) const;
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	[[nodiscard]] rpl::producer<HistoryUpdate> realtimeHistoryUpdates(
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		HistoryUpdate::Flag flag) const;
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	void topicUpdated(
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		not_null<ForumTopic*> topic,
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		TopicUpdate::Flags flags);
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	[[nodiscard]] rpl::producer<TopicUpdate> topicUpdates(
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		TopicUpdate::Flags flags) const;
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	[[nodiscard]] rpl::producer<TopicUpdate> topicUpdates(
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		not_null<ForumTopic*> topic,
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		TopicUpdate::Flags flags) const;
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	[[nodiscard]] rpl::producer<TopicUpdate> topicFlagsValue(
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		not_null<ForumTopic*> topic,
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		TopicUpdate::Flags flags) const;
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	[[nodiscard]] rpl::producer<TopicUpdate> realtimeTopicUpdates(
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		TopicUpdate::Flag flag) const;
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	void messageUpdated(
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		not_null<HistoryItem*> item,
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		MessageUpdate::Flags flags);
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	[[nodiscard]] rpl::producer<MessageUpdate> messageUpdates(
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		MessageUpdate::Flags flags) const;
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	[[nodiscard]] rpl::producer<MessageUpdate> messageUpdates(
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		not_null<HistoryItem*> item,
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		MessageUpdate::Flags flags) const;
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	[[nodiscard]] rpl::producer<MessageUpdate> messageFlagsValue(
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		not_null<HistoryItem*> item,
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		MessageUpdate::Flags flags) const;
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	[[nodiscard]] rpl::producer<MessageUpdate> realtimeMessageUpdates(
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		MessageUpdate::Flag flag) const;
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	void entryUpdated(
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		not_null<Dialogs::Entry*> entry,
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		EntryUpdate::Flags flags);
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	[[nodiscard]] rpl::producer<EntryUpdate> entryUpdates(
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		EntryUpdate::Flags flags) const;
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	[[nodiscard]] rpl::producer<EntryUpdate> entryUpdates(
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		not_null<Dialogs::Entry*> entry,
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		EntryUpdate::Flags flags) const;
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	[[nodiscard]] rpl::producer<EntryUpdate> entryFlagsValue(
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		not_null<Dialogs::Entry*> entry,
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		EntryUpdate::Flags flags) const;
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	[[nodiscard]] rpl::producer<EntryUpdate> realtimeEntryUpdates(
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		EntryUpdate::Flag flag) const;
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	void sendNotifications();
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private:
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	template <typename DataType, typename UpdateType>
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	class Manager final {
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	public:
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		using Flag = typename UpdateType::Flag;
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		using Flags = typename UpdateType::Flags;
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		void updated(
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			not_null<DataType*> data,
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			Flags flags,
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			bool dropScheduled = false);
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		[[nodiscard]] rpl::producer<UpdateType> updates(Flags flags) const;
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		[[nodiscard]] rpl::producer<UpdateType> updates(
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			not_null<DataType*> data,
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			Flags flags) const;
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		[[nodiscard]] rpl::producer<UpdateType> flagsValue(
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			not_null<DataType*> data,
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			Flags flags) const;
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		[[nodiscard]] rpl::producer<UpdateType> realtimeUpdates(
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			Flag flag) const;
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		void sendNotifications();
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	private:
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		static constexpr auto kCount = details::CountBit<Flag>() + 1;
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		void sendRealtimeNotifications(
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			not_null<DataType*> data,
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			Flags flags);
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		std::array<rpl::event_stream<UpdateType>, kCount> _realtimeStreams;
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		base::flat_map<not_null<DataType*>, Flags> _updates;
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		rpl::event_stream<UpdateType> _stream;
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	};
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	void scheduleNotifications();
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	const not_null<Main::Session*> _session;
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	rpl::event_stream<NameUpdate> _nameStream;
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	Manager<PeerData, PeerUpdate> _peerChanges;
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	Manager<History, HistoryUpdate> _historyChanges;
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	Manager<ForumTopic, TopicUpdate> _topicChanges;
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	Manager<HistoryItem, MessageUpdate> _messageChanges;
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	Manager<Dialogs::Entry, EntryUpdate> _entryChanges;
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	bool _notify = false;
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};
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} // namespace Data
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