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Telegram/SourceFiles/data/components/gift_auctions.h

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+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "base/timer.h"
+#include "data/data_star_gift.h"
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Data {
+
+struct GiftAuctionBidLevel {
+	int64 amount = 0;
+	int position = 0;
+	TimeId date = 0;
+};
+
+struct StarGiftAuctionMyState {
+	PeerData *to = nullptr;
+	int64 minBidAmount = 0;
+	int64 bid = 0;
+	TimeId date = 0;
+	int gotCount = 0;
+	bool returned = false;
+};
+
+struct GiftAuctionRound {
+	int number = 0;
+	TimeId duration = 0;
+	int extendTop = 0;
+	TimeId extendDuration = 0;
+};
+
+struct GiftAuctionState {
+	std::optional<StarGift> gift;
+	StarGiftAuctionMyState my;
+	std::vector<GiftAuctionBidLevel> bidLevels;
+	std::vector<not_null<UserData*>> topBidders;
+	std::vector<GiftAuctionRound> roundParameters;
+	crl::time subscribedTill = 0;
+	int64 minBidAmount = 0;
+	int64 averagePrice = 0;
+	TimeId startDate = 0;
+	TimeId endDate = 0;
+	TimeId nextRoundAt = 0;
+	int currentRound = 0;
+	int totalRounds = 0;
+	int giftsLeft = 0;
+	int version = 0;
+
+	[[nodiscard]] bool finished() const {
+		return (averagePrice != 0);
+	}
+};
+
+struct GiftAcquired {
+	not_null<PeerData*> to;
+	TextWithEntities message;
+	TimeId date = 0;
+	int64 bidAmount = 0;
+	int round = 0;
+	int number = 0;
+	int position = 0;
+	bool nameHidden = false;
+};
+
+struct ActiveAuctions {
+	std::vector<not_null<GiftAuctionState*>> list;
+};
+
+class GiftAuctions final {
+public:
+	explicit GiftAuctions(not_null<Main::Session*> session);
+	~GiftAuctions();
+
+	[[nodiscard]] rpl::producer<GiftAuctionState> state(const QString &slug);
+
+	void apply(const MTPDupdateStarGiftAuctionState &data);
+	void apply(const MTPDupdateStarGiftAuctionUserState &data);
+
+	void requestAcquired(
+		uint64 giftId,
+		Fn<void(std::vector<Data::GiftAcquired>)> done);
+
+	[[nodiscard]] std::optional<Data::UniqueGiftAttributes> attributes(
+		uint64 giftId) const;
+	void requestAttributes(uint64 giftId, Fn<void()> ready);
+
+	[[nodiscard]] rpl::producer<ActiveAuctions> active() const;
+	[[nodiscard]] rpl::producer<bool> hasActiveChanges() const;
+	[[nodiscard]] bool hasActive() const;
+
+private:
+	struct Entry {
+		GiftAuctionState state;
+		rpl::event_stream<> changes;
+		bool requested = false;
+	};
+	struct MyStateKey {
+		int bid = 0;
+		int position = 0;
+		int version = 0;
+
+		explicit operator bool() const {
+			return bid != 0;
+		}
+		friend inline bool operator==(MyStateKey, MyStateKey) = default;
+	};
+	struct Attributes {
+		Data::UniqueGiftAttributes lists;
+		std::vector<Fn<void()>> waiters;
+	};
+
+	void request(const QString &slug);
+	Entry *find(uint64 giftId) const;
+	void apply(
+		not_null<Entry*> entry,
+		const MTPStarGiftAuctionState &state);
+	void apply(
+		not_null<GiftAuctionState*> entry,
+		const MTPStarGiftAuctionState &state);
+	void apply(
+		not_null<Entry*> entry,
+		const MTPStarGiftAuctionUserState &state);
+	void apply(
+		not_null<StarGiftAuctionMyState*> entry,
+		const MTPStarGiftAuctionUserState &state);
+	void checkSubscriptions();
+
+	[[nodiscard]] MyStateKey myStateKey(const GiftAuctionState &state) const;
+	[[nodiscard]] ActiveAuctions collectActive() const;
+	[[nodiscard]] uint64 countActiveHash() const;
+	void requestActive();
+
+	const not_null<Main::Session*> _session;
+
+	base::Timer _timer;
+	base::flat_map<QString, std::unique_ptr<Entry>> _map;
+	base::flat_map<uint64, Attributes> _attributes;
+
+	rpl::event_stream<> _activeChanged;
+	mtpRequestId _activeRequestId = 0;
+
+	rpl::lifetime _lifetime;
+
+};
+
+[[nodiscard]] int MyAuctionPosition(const GiftAuctionState &state);
+
+} // namespace Data