//! The LOC carriage corpus (WAI `live-conformance/loc/`, loc-carriage §8):
//!
//!   cargo run -p joule-moq --example loc_vectors -- gen      writes vectors.json (never in CI)
//!   cargo run -p joule-moq --example loc_vectors -- verify   checks it
//!
//! Its HEVC objects carry access units of WAI's `format-probe-conformance/ext/hevc/base_64x64.265`.

use joule_moq::loc::corpus;

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

fn main() -> std::process::ExitCode {
    let hevc = std::fs::read(format!("{WAI}format-probe-conformance/ext/hevc/base_64x64.265")).expect("the H.265 vector");
    let path = format!("{WAI}live-conformance/loc/vectors.json");
    match std::env::args().nth(1).as_deref() {
        Some("gen") => match corpus::generate(&hevc) {
            Ok(s) => {
                std::fs::create_dir_all(format!("{WAI}live-conformance/loc")).expect("the corpus directory");
                std::fs::write(&path, s).expect("write vectors.json");
                println!("wrote {path}");
                std::process::ExitCode::SUCCESS
            }
            Err(e) => {
                eprintln!("{e}");
                std::process::ExitCode::FAILURE
            }
        },
        Some("verify") => {
            let doc: serde_json::Value = serde_json::from_str(&std::fs::read_to_string(&path).expect("vectors.json")).expect("JSON");
            let fails = corpus::verify(&doc);
            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: loc_vectors gen | verify");
            std::process::ExitCode::from(2)
        }
    }
}