extern crate telegram_bot;
use telegram_bot::{Api, ListeningMethod, ParseMode, MessageType, ListeningAction};
extern crate rustc_serialize;
use std::ascii::AsciiExt;

mod feature;
use feature::{Feature, FeatureResult};

fn main() {
    let api = Api::from_env("TELEGRAM_BOT_TOKEN").unwrap();

    println!("api started: {:?}", api.get_me());
    let mut features = feature::init();

    let mut listener = api.listener(ListeningMethod::LongPoll(None));
    let res = listener.listen(|u| {
        if let Some(m) = u.message {
            if let &MessageType::Text(ref s) = &m.msg {
                if (s).to_ascii_lowercase().contains("luggas zeig mir deine features") {
                    let mut msg = String::new();
                    for f in &features {
                        msg.push_str(&format!("`{}`, ", f.name()));
                    }
                    let msg = msg;
                    let pos = msg.len() - 2;
                    let mut msg = msg;
                    msg.remove(pos);
                    if let Err(e) = api.send_message(m.chat.id(),
                                                     msg,
                                                     Some(ParseMode::Markdown),
                                                     None,
                                                     Some(m.message_id),
                                                     None) {
                        println!("{}", e);
                    }
                    return Ok(ListeningAction::Continue);
                }
            }
            for f in &mut features {
                match f.handle(api.clone(), m.clone()) {
                    Ok(r) => {
                        match r {
                            FeatureResult::Handled => break,
                            FeatureResult::Skip => continue,
                        };
                    }
                    Err(e) => {
                        println!("Error in feature {}: {}", f.name(), e);
                    }
                };
            }
        };
        Ok(ListeningAction::Continue)
    });

    if let Err(e) = res {
        panic!(e);
    }
}