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use std::{collections::BTreeMap, fs, io};
use colored::Colorize;
use mingling::{
Grouped, RenderResult, Routable,
macros::{buffer, command, metadata, pack_err, r_println, renderer, routeify},
metadata::Description,
};
use crate::{
Next, eprintln_cargo,
pkg_mgr::{ErrorNoDataDirectory, ResPackagesDir},
};
#[derive(Debug, Default, Clone)]
pub struct PkgShowEntry {
pub name: String,
/// Enabled version, from the content of the enable file.
pub enabled: Option<String>,
/// Installed versions, newest first.
pub versions: Vec<String>,
}
#[derive(Debug, Default, Grouped)]
pub struct ResultPkgShow {
pub packages: Vec<PkgShowEntry>,
}
#[metadata(EntryPkgShow)]
pub fn desc_pkg_show() -> Description {
"Show locally installed packages".into()
}
pack_err!(ErrorNoPackagesInstalled);
#[command(node = "pkg-show", routeify)]
pub fn package_show(packages_dir: &ResPackagesDir) -> Next {
let packages_dir = &packages_dir.path;
if packages_dir.as_os_str().is_empty() {
return ErrorNoDataDirectory::default().to_chain();
}
let mut entries: BTreeMap<String, PkgShowEntry> = BTreeMap::new();
for entry in fs::read_dir(packages_dir).map_err(|e| {
io::Error::new(
e.kind(),
format!("failed to read {}: {e}", packages_dir.display()),
)
})? {
let entry = entry.map_err(|e| {
io::Error::new(e.kind(), format!("failed to read directory entry: {e}"))
})?;
let file_type = entry.file_type().map_err(|e| {
io::Error::new(e.kind(), format!("failed to inspect directory entry: {e}"))
})?;
let name = entry.file_name().to_string_lossy().into_owned();
if file_type.is_dir() {
// Installed version directory: `name@version`
if let Some((pkg, version)) = name.split_once('@') {
let pkg = pkg.to_string();
let entry = entries.entry(pkg.clone()).or_default();
entry.name = pkg;
entry.versions.push(version.to_string());
}
} else if file_type.is_file() {
// Enable file: `name`, content is the enabled version
let content = fs::read_to_string(entry.path()).map_err(|e| {
io::Error::new(
e.kind(),
format!("failed to read {}: {e}", entry.path().display()),
)
})?;
let entry = entries.entry(name.clone()).or_default();
entry.name = name;
entry.enabled = Some(content.trim().to_string());
}
}
for pkg in entries.values_mut() {
pkg.versions.sort_by(|a, b| compare_versions(b, a));
}
let packages: Vec<PkgShowEntry> = entries.into_values().collect();
if packages.is_empty() {
return ErrorNoPackagesInstalled::default().into();
}
ResultPkgShow { packages }.to_chain()
}
#[renderer(buffer)]
pub fn render_result_pkg_show(r: ResultPkgShow) {
for pkg in r.packages {
if let Some(enabled) = &pkg.enabled {
r_println!("{}", format!("{} ({})", pkg.name, enabled).bright_cyan());
} else {
r_println!("{}", pkg.name);
}
for version in pkg.versions {
r_println!(" {version}");
}
}
}
#[renderer]
pub fn render_error_no_packages_installed(_: ErrorNoPackagesInstalled) -> RenderResult {
let mut r = RenderResult::new();
eprintln_cargo!(r, "No packages installed");
r
}
/// Newest first; unparsable versions sort last, compared lexicographically.
fn compare_versions(a: &str, b: &str) -> std::cmp::Ordering {
match (semver::Version::parse(a), semver::Version::parse(b)) {
(Ok(x), Ok(y)) => x.cmp(&y),
(Ok(_), Err(_)) => std::cmp::Ordering::Greater,
(Err(_), Ok(_)) => std::cmp::Ordering::Less,
(Err(_), Err(_)) => a.cmp(b),
}
}
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