//! The MoQ file corpus and the V3C corpus (WAI `moqt-conformance/moq-file/` and
//! `moqt-conformance/v3c/`; live-recording §8.7, moq-streaming-format §4.5):
//!
//!   cargo run -p joule-moq --example oneway_vectors -- gen      writes both (never in CI)
//!   cargo run -p joule-moq --example oneway_vectors -- verify   checks both

use std::path::PathBuf;

use joule_moq::{file, v3c};

const WAI: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/../../../../wai/");

fn main() -> std::process::ExitCode {
    let files = PathBuf::from(format!("{WAI}moqt-conformance/moq-file"));
    let v3c_path = format!("{WAI}moqt-conformance/v3c/vectors.json");
    match std::env::args().nth(1).as_deref() {
        Some("gen") => {
            for (name, bytes) in file::corpus::generate() {
                let path = files.join(&name);
                std::fs::create_dir_all(path.parent().expect("a file under the corpus")).expect("the corpus directory");
                std::fs::write(&path, bytes).expect("write a corpus file");
            }
            std::fs::create_dir_all(format!("{WAI}moqt-conformance/v3c")).expect("the corpus directory");
            std::fs::write(&v3c_path, v3c::corpus::generate()).expect("write vectors.json");
            println!("wrote {} and {v3c_path}", files.display());
            std::process::ExitCode::SUCCESS
        }
        Some("verify") => {
            let mut fails = file::corpus::verify(&files);
            match std::fs::read_to_string(&v3c_path).ok().and_then(|s| serde_json::from_str(&s).ok()) {
                Some(doc) => fails.extend(v3c::corpus::verify(&doc)),
                None => fails.push("the V3C vectors do not read".into()),
            }
            for f in &fails {
                eprintln!("FAIL {f}");
            }
            println!("{} failures", fails.len());
            if fails.is_empty() { std::process::ExitCode::SUCCESS } else { std::process::ExitCode::FAILURE }
        }
        _ => {
            eprintln!("usage: oneway_vectors gen | verify");
            std::process::ExitCode::from(2)
        }
    }
}