Added support of service actions for premium gifts.

Telegram/SourceFiles/chat_helpers/stickers_dice_pack.cpp

@@ -65,8 +65,7 @@ void DicePack::applySet(const MTPDmessages_stickerSet &data) {
 	auto index = 0;
 	auto documents = base::flat_map<DocumentId, not_null<DocumentData*>>();
 	for (const auto &sticker : data.vdocuments().v) {
-		const auto document = _session->data().processDocument(
-			sticker);
+		const auto document = _session->data().processDocument(sticker);
 		if (document->sticker()) {
 			if (isSlotMachine) {
 				_map.emplace(index++, document);

Telegram/SourceFiles/chat_helpers/stickers_gift_box_pack.cpp

@@ -0,0 +1,86 @@
+/*
+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
+*/
+#include "chat_helpers/stickers_gift_box_pack.h"
+
+#include "apiwrap.h"
+#include "data/data_document.h"
+#include "data/data_session.h"
+#include "main/main_session.h"
+
+namespace Stickers {
+
+GiftBoxPack::GiftBoxPack(not_null<Main::Session*> session)
+: _session(session)
+, _localMonths({ 3, 6, 12 }) {
+}
+
+GiftBoxPack::~GiftBoxPack() = default;
+
+DocumentData *GiftBoxPack::lookup(int months) const {
+	const auto it = ranges::lower_bound(_localMonths, months);
+	if (it == begin(_localMonths)) {
+		return _documents.empty() ? nullptr : _documents[0];
+	}
+	const auto left = *(it - 1);
+	const auto right = *it;
+	const auto shift = (std::abs(months - left) < std::abs(months - right))
+		? -1
+		: 0;
+	const auto index = int(std::distance(begin(_localMonths), it - shift));
+	return (index >= _documents.size()) ? nullptr : _documents[index];
+}
+
+void GiftBoxPack::load() {
+	if (_requestId || !_documents.empty()) {
+		return;
+	}
+	_requestId = _session->api().request(MTPmessages_GetStickerSet(
+		MTP_inputStickerSetPremiumGifts(),
+		MTP_int(0) // Hash.
+	)).done([=](const MTPmessages_StickerSet &result) {
+		result.match([&](const MTPDmessages_stickerSet &data) {
+			applySet(data);
+		}, [](const MTPDmessages_stickerSetNotModified &) {
+			LOG(("API Error: Unexpected messages.stickerSetNotModified."));
+		});
+	}).fail([=] {
+		_requestId = 0;
+	}).send();
+}
+
+void GiftBoxPack::applySet(const MTPDmessages_stickerSet &data) {
+	_setId = data.vset().data().vid().v;
+	auto documents = base::flat_map<DocumentId, not_null<DocumentData*>>();
+	for (const auto &sticker : data.vdocuments().v) {
+		const auto document = _session->data().processDocument(sticker);
+		if (document->sticker()) {
+			documents.emplace(document->id, document);
+		}
+	}
+	for (const auto &pack : data.vpacks().v) {
+		pack.match([&](const MTPDstickerPack &data) {
+			const auto emoji = qs(data.vemoticon());
+			if (emoji.isEmpty()) {
+				return;
+			}
+			for (const auto &id : data.vdocuments().v) {
+				if (const auto document = documents.take(id.v)) {
+					_documents.push_back(*document);
+				}
+			}
+		});
+	}
+}
+
+bool GiftBoxPack::isGiftSticker(not_null<DocumentData*> document) const {
+	return document->sticker()
+		? (document->sticker()->set.id == _setId)
+		: false;
+}
+
+} // namespace Stickers

Telegram/SourceFiles/chat_helpers/stickers_gift_box_pack.h

@@ -0,0 +1,41 @@
+/*
+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
+
+class DocumentData;
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Stickers {
+
+class GiftBoxPack final {
+public:
+	explicit GiftBoxPack(not_null<Main::Session*> session);
+	~GiftBoxPack();
+
+	void load();
+	[[nodiscard]] DocumentData *lookup(int months) const;
+
+	[[nodiscard]] bool isGiftSticker(not_null<DocumentData*> document) const;
+
+private:
+	using SetId = uint64;
+	void applySet(const MTPDmessages_stickerSet &data);
+
+	const not_null<Main::Session*> _session;
+	const std::vector<int> _localMonths;
+
+	std::vector<DocumentData*> _documents;
+	SetId _setId = 0;
+	mtpRequestId _requestId = 0;
+
+};
+
+} // namespace Stickers