use std::path::Path;

use serde::Deserialize;

datatest_stable::harness! {
    {
        test = test_failures, root = "tests/logs", pattern = r".*.failure.log"
    },
}

#[derive(Debug, Deserialize)]
struct FailureInfoHeader {
    failed_derivations: Vec<String>,
}

fn test_failures(_path: &Path, content: String) -> datatest_stable::Result<()> {
    let (header, content) = content.split_once("------").unwrap();

    let header: FailureInfoHeader = serde_json::from_str(header).unwrap();

    let build_state = nix_json::helpers::NixBuildState::from_log_lines(content)?;

    assert!(build_state.is_failed());

    for drv in header.failed_derivations {
        let state = build_state
            .get_derivation(&drv)
            .unwrap_or_else(|| panic!("Expected {drv} to be present in build state"));

        assert!(
            state.is_failed(),
            "derivation {drv} was found, but it was not marked as failed"
        );
    }

    Ok(())
}