code-moniker 0.4.0

#[cfg(feature = "tui")]
use std::collections::BTreeMap;
use std::path::PathBuf;

#[derive(Clone, Debug, Eq, PartialEq)]
pub(crate) struct SessionOptions {
	pub paths: Vec<PathBuf>,
	pub project: Option<String>,
	pub cache_dir: Option<PathBuf>,
}

#[derive(Clone, Debug, Default, Eq, PartialEq)]
#[cfg(feature = "tui")]
pub struct SessionStats {
	pub files: usize,
	pub defs: usize,
	pub refs: usize,
	pub by_lang: BTreeMap<&'static str, LangTotals>,
	pub by_shape: BTreeMap<&'static str, usize>,
	pub by_def_kind: BTreeMap<String, usize>,
	pub by_ref_kind: BTreeMap<String, usize>,
	pub scan_ms: u64,
	pub extract_ms: u64,
	pub index_ms: u64,
	pub linkage_ms: u64,
	pub changes_ms: u64,
}

#[derive(Clone, Debug, Default, Eq, PartialEq)]
#[cfg(feature = "tui")]
pub(crate) struct LangTotals {
	pub files: usize,
	pub defs: usize,
	pub refs: usize,
}

#[derive(Clone, Debug, Default, Eq, PartialEq)]
#[cfg(feature = "tui")]
pub struct CheckSummary {
	pub files_scanned: usize,
	pub files_with_violations: usize,
	pub total_violations: usize,
	pub errors: Vec<CheckError>,
}

#[derive(Clone, Debug, Eq, PartialEq)]
#[cfg(feature = "tui")]
pub(crate) struct CheckError {
	pub path: PathBuf,
	pub error: String,
}

#[cfg(feature = "tui")]
pub(crate) fn root_label_for_options(opts: &SessionOptions) -> String {
	match opts.paths.as_slice() {
		[] => "<empty>".to_string(),
		[path] => path.display().to_string(),
		paths => sibling_parent(paths)
			.map(|parent| parent.display().to_string())
			.unwrap_or_else(|| {
				paths
					.iter()
					.map(|path| path.display().to_string())
					.collect::<Vec<_>>()
					.join(", ")
			}),
	}
}

#[cfg(feature = "tui")]
fn sibling_parent(paths: &[PathBuf]) -> Option<&std::path::Path> {
	let mut parents = paths.iter().map(|path| path.parent());
	let first = parents.next()??;
	parents.all(|parent| parent == Some(first)).then_some(first)
}