99 lines
		
	
	
	
		
			2.8 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			99 lines
		
	
	
	
		
			2.8 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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#include "chat_helpers/stickers_gift_box_pack.h"
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#include "apiwrap.h"
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#include "data/data_document.h"
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#include "data/data_session.h"
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#include "main/main_session.h"
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namespace Stickers {
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GiftBoxPack::GiftBoxPack(not_null<Main::Session*> session)
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: _session(session)
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, _localMonths({ 1, 3, 6, 12, 24 }) {
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}
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GiftBoxPack::~GiftBoxPack() = default;
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DocumentData *GiftBoxPack::lookup(int months) const {
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	const auto it = ranges::lower_bound(_localMonths, months);
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	const auto fallback = _documents.empty() ? nullptr : _documents[0];
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	if (it == begin(_localMonths)) {
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		return fallback;
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	}
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	const auto left = *(it - 1);
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	const auto right = *it;
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	const auto shift = (std::abs(months - left) < std::abs(months - right))
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		? -1
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		: 0;
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	const auto index = int(std::distance(begin(_localMonths), it - shift));
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	return (index >= _documents.size()) ? fallback : _documents[index];
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}
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void GiftBoxPack::load() {
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	if (_requestId || !_documents.empty()) {
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		return;
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	}
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	_requestId = _session->api().request(MTPmessages_GetStickerSet(
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		MTP_inputStickerSetPremiumGifts(),
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		MTP_int(0) // Hash.
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	)).done([=](const MTPmessages_StickerSet &result) {
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		_requestId = 0;
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		result.match([&](const MTPDmessages_stickerSet &data) {
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			applySet(data);
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		}, [](const MTPDmessages_stickerSetNotModified &) {
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			LOG(("API Error: Unexpected messages.stickerSetNotModified."));
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		});
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	}).fail([=] {
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		_requestId = 0;
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	}).send();
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}
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void GiftBoxPack::applySet(const MTPDmessages_stickerSet &data) {
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	_setId = data.vset().data().vid().v;
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	auto documents = base::flat_map<DocumentId, not_null<DocumentData*>>();
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	for (const auto &sticker : data.vdocuments().v) {
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		const auto document = _session->data().processDocument(sticker);
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		if (document->sticker()) {
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			documents.emplace(document->id, document);
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			if (_documents.empty()) {
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				// Fallback.
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				_documents.resize(1);
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				_documents[0] = document;
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			}
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		}
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	}
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	for (const auto &pack : data.vpacks().v) {
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		pack.match([&](const MTPDstickerPack &data) {
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			const auto emoji = qs(data.vemoticon());
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			if (emoji.isEmpty()) {
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				return;
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			}
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			for (const auto &id : data.vdocuments().v) {
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				if (const auto document = documents.take(id.v)) {
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					if (const auto sticker = (*document)->sticker()) {
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						if (!sticker->alt.isEmpty()) {
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							const auto ch = int(sticker->alt[0].unicode());
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							const auto index = (ch - '1'); // [0, 4];
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							if (index < 0 || index >= _localMonths.size()) {
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								return;
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							}
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							if ((index + 1) > _documents.size()) {
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								_documents.resize((index + 1));
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							}
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							_documents[index] = (*document);
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						}
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					}
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				}
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			}
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		});
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	}
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}
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} // namespace Stickers
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