[package]
name = "rsstg"
version = "0.2.0"
authors = ["arcade"]
edition = "2018"

[dependencies]
anyhow = "*"
atom_syndication = { version = "*", features = [ "with-serde" ] }
chrono = "*"

	let mut i_command = command.into_iter();
	let (channel, url, iv_hash, url_re) = (
		i_command.next().context(at_least)?,
		i_command.next().context(at_least)?,
		i_command.next(),
		i_command.next());
	if ! RE_USERNAME.is_match(&channel) {
		core.send(format!("Usernames should be something like \"@\\[a\\-zA\\-Z]\\[a\\-zA\\-Z0\\-9\\_]+\", aren't they?\nNot {:?}", &channel), Some(sender), None)?;
		return Ok(())
	}
	if ! RE_LINK.is_match(&url) {
		core.send(format!("Link should be a link to atom/rss feed, something like \"https://domain/path\".\nNot {:?}", &url), Some(sender), None)?;
		return Ok(())
	}
	let iv_hash = match iv_hash {
		Some(hash) => {
			if ! RE_IV_HASH.is_match(hash) {
				core.send(format!("IV hash should be 14 hex digits.\nNot {:?}", hash), Some(sender), None)?;
				return Ok(())
			};
			Some(*hash)
		}
		None => None,
	};
	if let Some(rex) = url_re {
		let _url_rex = ReplaceCommand::new(rex).context("Regexp parsing error:")?;
	};
	let channel_id = i64::from(core.tg.send(telegram_bot::GetChat::new(telegram_bot::types::ChatRef::ChannelUsername(channel.to_string()))).await?.id());
	let chan_adm = core.tg.send(telegram_bot::GetChatAdministrators::new(telegram_bot::types::ChatRef::ChannelUsername(channel.to_string()))).await
		.context("Sorry, I have no access to that chat\\.")?;
	let (mut me, mut user) = (false, false);
	for admin in chan_adm {
		if admin.user.id == core.my.id {
			me = true;
		};
		if admin.user.id == sender {
			user = true;
		};
	};
	if ! me   { bail!("I need to be admin on that channel\\."); };
	if ! user { bail!("You should be admin on that channel\\."); };
	core.send(core.update(source_id, channel, channel_id, url, iv_hash, None, sender).await?, Some(sender), None)?;
	Ok(())
}

async fn handle(update: telegram_bot::Update, core: &core::Core, mut _reply_to: &Option<telegram_bot::UserId>) -> Result<()> {
	match update.kind {
		telegram_bot::UpdateKind::Message(message) => {
			match message.kind {
				telegram_bot::MessageKind::Text { ref data, .. } => {
					let sender = message.from.id;
					let words: Vec<&str> = data.split_whitespace().collect();
					match words[0] {
						"/check" | "/clean" | "/enable" | "/delete" | "/disable" => command::command(core, sender, words).await?,
						"/start" => command::start(core, sender).await?,
						"/list" => command::list(core, sender).await?,
						"/add" | "/update" => command::update(core, sender, words).await?,
						_ => {
						},


					};
				},
				_ => {
				},
			};
		},
		_ => {},