tdesktop/Telegram/SourceFiles/chat_helpers/stickers_gift_box_pack.cpp

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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
*/
#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({ 1, 3, 6, 12, 24 }) {
}
GiftBoxPack::~GiftBoxPack() = default;
DocumentData *GiftBoxPack::lookup(int months) const {
const auto it = ranges::lower_bound(_localMonths, months);
const auto fallback = _documents.empty() ? nullptr : _documents[0];
if (it == begin(_localMonths)) {
return fallback;
}
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()) ? fallback : _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) {
_requestId = 0;
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);
if (_documents.empty()) {
// Fallback.
_documents.resize(1);
_documents[0] = 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)) {
if (const auto sticker = (*document)->sticker()) {
if (!sticker->alt.isEmpty()) {
const auto ch = int(sticker->alt[0].unicode());
const auto index = (ch - '1'); // [0, 4];
if (index < 0 || index >= _localMonths.size()) {
return;
}
if ((index + 1) > _documents.size()) {
_documents.resize((index + 1));
}
_documents[index] = (*document);
}
}
}
}
});
}
}
} // namespace Stickers