use std::io::Read;

mod ics;
use ics::Parser;

fn fetch(client: &reqwest::Client, url: &str) -> Result<(), Box<dyn std::error::Error>> {
    let mut res = client.get(url).send()?;

    println!("{} {}", res.status(), url);

    let mut p = Parser::new();
    let mut buf = [0; 8192];
    loop {
        match res.read(&mut buf)? {
            len if len > 0 => {
                let data = &buf[..len];
                p.feed(data, |obj| {
                    println!("- [{}] {}", obj.get("DTSTART").unwrap_or("?"), obj.get("SUMMARY").unwrap_or("?"));
                    print!("  {}", obj.get("LOCATION").unwrap_or("?"));
                    obj.get("URL").map(|url| print!("  <{}>", url));
                    println!("");
                });
            }
            _ => break,
        }
    }

    Ok(())
}

fn main() {
    let client = reqwest::Client::new();
    fetch(&client, "https://c3d2.de/ical.ics").expect("fetch");
    fetch(&client, "https://www.dresden-science-calendar.de/calendar/de/iCalSync.ics").expect("fetch");
}