vyre-conform 0.1.0

use crate::spec::types::ParityFailure;
use std::fs;
use std::io::{self, Write};
use std::path::PathBuf;
use std::sync::atomic::{AtomicU64, Ordering};
use std::time::{SystemTime, UNIX_EPOCH};
#[cfg(loom)]
use loom::sync::Mutex as LoomMutex;
use super::hex::*;

/// Persist a failing input so future runs replay it before generated cases.
///
/// Regressions are stored in version-specific directories:
/// `regressions/<op_id>/v<version>/<sha256>.json`
#[inline]
pub fn save(failure: &ParityFailure) -> io::Result<PathBuf> {
    #[cfg(loom)]
    {
        let mut store = LOOM_STORE.lock().unwrap();
        store.push(failure.clone());
        return Ok(PathBuf::from("loom-mem"));
    }
    #[cfg(not(loom))]
    {
        let dir = versioned_regression_dir(&failure.op_id, failure.spec_version);
        fs::create_dir_all(&dir)?;
        let bytes = serialize_failure(failure)?;
        let name = format!("{}.json", sha256_hex(&failure.input));
        let path = dir.join(name);
        atomic_write_new(&path, &bytes)?;
        Ok(path)
    }
}