Function CheckChatInvite

Telegram/SourceFiles/api/api_chat_invite.cpp:669–759

}

void CheckChatInvite(
		not_null<Window::SessionController*> controller,
		const QString &hash,
		ChannelData *invitePeekChannel,
		Fn<void()> loaded) {
	const auto session = &controller->session();
	const auto weak = base::make_weak(controller);
	session->api().checkChatInvite(hash, [=](const MTPChatInvite &result) {
		const auto strong = weak.get();
		if (!strong) {
			return;
		}
		if (loaded) {
			loaded();
		}
		Core::App().hideMediaView();
		const auto show = [&](not_null<PeerData*> chat) {
			const auto way = Window::SectionShow::Way::Forward;
			if (const auto forum = chat->forum()) {
				strong->showForum(forum, way);
			} else {
				strong->showPeerHistory(chat, way);
			}
		};
		result.match([=](const MTPDchatInvite &data) {
			const auto isGroup = !data.is_broadcast();
			const auto hasPricing = !!data.vsubscription_pricing();
			const auto canRefulfill = data.is_can_refulfill_subscription();
			if (hasPricing
				&& !canRefulfill
				&& !data.vsubscription_form_id()) {
				strong->uiShow()->showToast(
					tr::lng_confirm_phone_link_invalid(tr::now));
				return;
			}
			const auto box = (hasPricing && !canRefulfill)
				? strong->show(Box(
					ConfirmSubscriptionBox,
					session,
					hash,
					&data))
				: strong->show(Box(
					ConfirmInviteBox,
					session,
					&data,
					invitePeekChannel,
					[=] { SubmitChatInvite(weak, session, hash, isGroup); }));
			if (invitePeekChannel) {
				box->boxClosing(
				) | rpl::filter([=] {
					return !invitePeekChannel->amIn();
				}) | rpl::on_next([=] {
					if (const auto strong = weak.get()) {
						strong->clearSectionStack(Window::SectionShow(
							Window::SectionShow::Way::ClearStack,
							anim::type::normal,
							anim::activation::background));
					}