use std::io::prelude::*;
use std::io::BufReader;
use std::fs::File;
use nmea_parser::*;

fn main() -> std::io::Result<()> {
    let f = File::open("/dev/ttyACM0")?;
    let mut reader = BufReader::new(f);

    let mut line = String::new();

    let mut parser = NmeaParser::new();
    loop {
        let len = reader.read_line(&mut line)?;
        if len > 1 {
            match parser.parse_sentence(&line) {
                Ok(msg) => {
                    match msg {
                        ParsedMessage::Gga(gga) => {
                            println!("Source:          {}",     gga.source);
                            println!("Latitude:        {:.3}°", gga.latitude.unwrap());
                            println!("Longitude:       {:.3}°", gga.longitude.unwrap());
                            match gga.satellite_count {
                                Some(sat_count) => {
                                    println!("Satellite count: {}", sat_count);
                                },
                                None => {
                                    println!("No satellites in sight");
                                }
                            }
                            match gga.timestamp {
                                Some(timestamp) => {
                                    println!("Timestamp:       {}", timestamp);
                                },
                                None => {
                                    println!("No timestamp
                                    ")
                                }
                            }
                        },
                        // ParsedMessage::Gsa(gsa) => {
                        //     println!("{}", gsa.mode1_automatic)
                        // }
                        _ => {
                        }
                    }
                },
                Err(_err) => {}
            }
        }
        line.clear();
    }
}

// $GNRMC,204607.00,A,5222.24380,N,01351.13504,E,0.103,,210621,,,A*62
// $GNVTG,,T,,M,0.103,N,0.191,K,A*36
// $GNGGA,204607.00,5222.24380,N,01351.13504,E,1,08,1.29,29.2,M,41.8,M,,*7C
// $GNGSA,A,3,04,09,06,03,07,26,,,,,,,1.90,1.29,1.39*1E
// $GPGSV,4,1,13,02,40,283,19,03,08,126,08,04,39,073,27,06,44,232,31*77
// $GNGLL,5222.24380,N,01351.13504,E,204607.00,A,A*7F