//! The track switching corpus and the probe corpus (WAI `moqt-conformance/switching/` and
//! `moqt-conformance/probe/`; `draft-ugur-moq-fast-switching-00`, `draft-gurel-moq-probing-00`):
//!
//!   cargo run -p joule-moq --example adaptation_vectors -- gen      writes both (never in CI)
//!   cargo run -p joule-moq --example adaptation_vectors -- verify   checks both

use joule_moq::{probe, switching};

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

fn main() -> std::process::ExitCode {
    let path = |corpus: &str| format!("{WAI}moqt-conformance/{corpus}/vectors.json");
    match std::env::args().nth(1).as_deref() {
        Some("gen") => {
            for (corpus, text) in [("switching", switching::corpus::generate()), ("probe", probe::corpus::generate())] {
                std::fs::create_dir_all(format!("{WAI}moqt-conformance/{corpus}")).expect("the corpus directory");
                std::fs::write(path(corpus), text).expect("write vectors.json");
                println!("wrote {}", path(corpus));
            }
            std::process::ExitCode::SUCCESS
        }
        Some("verify") => {
            let read = |corpus: &str| std::fs::read_to_string(path(corpus)).ok().and_then(|s| serde_json::from_str::<serde_json::Value>(&s).ok());
            let mut fails = Vec::new();
            match read("switching") {
                Some(doc) => fails.extend(switching::corpus::verify(&doc)),
                None => fails.push("the switching vectors do not read".into()),
            }
            match read("probe") {
                Some(doc) => fails.extend(probe::corpus::verify(&doc)),
                None => fails.push("the probe 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: adaptation_vectors gen | verify");
            std::process::ExitCode::from(2)
        }
    }
}