use ebml::{matroska::MatroskaTag, read::EbmlReader, write::EbmlWriter};
use std::{
    fs::File,
    io::{stdin, stdout, BufReader, BufWriter},
};

fn main() -> anyhow::Result<()> {
    env_logger::init_from_env("LOG");
    let path = std::env::args().skip(1).next().unwrap();
    let mut r = EbmlReader::new(BufReader::new(File::open(path)?));
    let mut w = EbmlWriter::new(BufWriter::new(stdout()), 0);

    // r.seek(
    //     631147167 + 52,
    //     ebml::matroska::MatroskaTag::Cues(Master::Start),
    // )
    // .unwrap();

    while let Some(tag) = r.next() {
        let tag = tag?;
        // println!("{} {tag:?}", r.position);
        match tag {
            tag @ MatroskaTag::SeekHead(_) => {
                eprintln!("{:?}", r.collect_master(tag));
            }
            tag @ MatroskaTag::Cues(_) => {
                eprintln!("{:?}", r.collect_master(tag));
            }
            tag => {
                w.write_tag(&tag)?;
            }
        }
    }
    Ok(())
}