Function UpdateCloudFile

Telegram/SourceFiles/data/data_cloud_file.cpp:162–231

}

void UpdateCloudFile(
		CloudFile &file,
		const ImageWithLocation &data,
		Storage::Cache::Database &cache,
		uint8 cacheTag,
		Fn<void(FileOrigin)> restartLoader,
		Fn<void(QImage, QByteArray)> usePreloaded) {
	if (!data.location.valid()) {
		if (data.progressivePartSize && !file.location.valid()) {
			file.progressivePartSize = data.progressivePartSize;
		}
		if (data.location.width()
			&& data.location.height()
			&& !file.location.valid()
			&& !file.location.width()) {
			file.location = data.location;
		}
		return;
	}

	const auto needStickerThumbnailUpdate = [&] {
		const auto was = std::get_if<StorageFileLocation>(
			&file.location.file().data);
		const auto now = std::get_if<StorageFileLocation>(
			&data.location.file().data);
		using Type = StorageFileLocation::Type;
		if (!was || !now || was->type() != Type::StickerSetThumb) {
			return false;
		}
		return now->valid()
			&& (now->type() != Type::StickerSetThumb
				|| now->cacheKey() != was->cacheKey());
	};
	const auto update = !file.location.valid()
		|| (data.location.file().cacheKey()
			&& (!file.location.file().cacheKey()
				|| (file.location.width() < data.location.width())
				|| (file.location.height() < data.location.height())
				|| needStickerThumbnailUpdate()));
	if (!update) {
		return;
	}
	auto cacheBytes = !data.bytes.isEmpty()
		? data.bytes
		: v::is<InMemoryLocation>(file.location.file().data)
		? v::get<InMemoryLocation>(file.location.file().data).bytes
		: QByteArray();
	if (!cacheBytes.isEmpty()) {
		if (const auto cacheKey = data.location.file().cacheKey()) {
			cache.putIfEmpty(
				cacheKey,
				Storage::Cache::Database::TaggedValue(
					std::move(cacheBytes),
					cacheTag));
		}
	}
	file.location = data.location;
	file.byteSize = data.bytesCount;