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/**
* Project discovery.
*
* A project is a directory under the root containing a `.sl0ppi/` marker.
* Depth-1 by default: recursively scanning ~/dev is slow and surprising, and
* an explicit `sl0ppi open path/to/nested` covers the rest.
*/
import { readdirSync, statSync } from "node:fs";
import { join } from "node:path";
export const MARKER_DIR = ".sl0ppi";
export const LAYOUT_FILE = "layout.kdl";
export interface DiscoverOptions {
/** How many directory levels below the root to search. Default 1. */
depth?: number;
}
/**
* Paths of discovered projects, relative to `root`, sorted alphabetically.
*
* Unreadable directories are skipped rather than fatal: one bad-permission
* directory in ~/dev must not stop the other eleven projects from opening.
*/
export function discoverProjects(root: string, options: DiscoverOptions = {}): string[] {
const depth = options.depth ?? 1;
const found: string[] = [];
walk(root, "", depth, found);
return found.sort();
}
function walk(root: string, rel: string, depthLeft: number, found: string[]): void {
if (depthLeft <= 0) return;
let entries;
try {
entries = readdirSync(join(root, rel), { withFileTypes: true });
} catch {
return; // unreadable: skip, do not throw
}
for (const entry of entries) {
// Skip dotfiles: `.git` and friends are never projects, and this also
// stops us descending into the marker directory itself.
if (entry.name.startsWith(".")) continue;
const childRel = rel ? `${rel}/${entry.name}` : entry.name;
const childAbs = join(root, childRel);
// Follow symlinked directories (a worktree or a symlinked checkout is a
// perfectly ordinary way to lay out ~/dev), but never fail on a broken one.
let isDir = entry.isDirectory();
if (!isDir && entry.isSymbolicLink()) {
try {
isDir = statSync(childAbs).isDirectory();
} catch {
continue; // dangling symlink
}
}
if (!isDir) continue;
if (isProjectDir(childAbs)) {
found.push(childRel);
continue; // a project is a leaf; do not nest projects inside projects
}
walk(root, childRel, depthLeft - 1, found);
}
}
/** A directory is a project when it carries the `.sl0ppi/` marker directory. */
export function isProjectDir(absPath: string): boolean {
try {
return statSync(join(absPath, MARKER_DIR)).isDirectory();
} catch {
return false;
}
}
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