mod protos;
use protos::protos::gtfs_realtime::FeedMessage;

use protobuf::Message;
use clap::Parser;

#[derive(Parser, Debug)]
#[command(author, version, about, long_about = None)]
struct Args {
   /// uri of the GTFS RT feed to fetch & display
   #[arg(long)]
   url: String,
}

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let args = Args::parse();
    let resp = reqwest::get(&args.url)
        .await?
        .bytes().await?;

    let proto = FeedMessage::parse_from_bytes(&resp[..])?;
        
    println!("{}", protobuf::text_format::print_to_string_pretty(&proto));
    Ok(())
}