Index Gen

1import { writeFileSync, mkdirSync } from "node:fs";
2import { dirname } from "node:path";
3import { readManifest, indexPath } from "./manifest.mjs";
4
5function pad(str, len) {
6  return String(str ?? "").padEnd(len);
7}
8
9function formatDur(record) {
10  if (record.duration == null) return "—";
11  return `${record.duration}s`;
12}
13
14function formatDims(record) {
15  if (record.width && record.height) return `${record.width}×${record.height}`;
16  if (record.type === "icon" && record.transparent) return "svg";
17  return "—";
18}
19
20export function generateIndexContent(records) {
21  const count = records.length;
22  const header = `# .media · ${count} asset${count === 1 ? "" : "s"}\n`;
23  if (count === 0) return header;
24
25  const cols = { id: 4, type: 5, dur: 4, dims: 5, path: 5, desc: 11 };
26  for (const r of records) {
27    cols.id = Math.max(cols.id, (r.id ?? "").length);
28    cols.type = Math.max(cols.type, (r.type ?? "").length);
29    cols.dur = Math.max(cols.dur, formatDur(r).length);
30    cols.dims = Math.max(cols.dims, formatDims(r).length);
31    cols.path = Math.max(cols.path, (r.path ?? "").length);
32  }
33
34  const heading =
35    pad("id", cols.id + 2) +
36    pad("type", cols.type + 2) +
37    pad("dur", cols.dur + 2) +
38    pad("dims", cols.dims + 2) +
39    pad("path", cols.path + 2) +
40    "description";
41
42  const lines = [header, heading];
43  for (const r of records) {
44    lines.push(
45      pad(r.id, cols.id + 2) +
46        pad(r.type, cols.type + 2) +
47        pad(formatDur(r), cols.dur + 2) +
48        pad(formatDims(r), cols.dims + 2) +
49        pad(r.path, cols.path + 2) +
50        (r.description ?? ""),
51    );
52  }
53  return lines.join("\n") + "\n";
54}
55
56export function regenerateIndex(projectDir) {
57  const records = readManifest(projectDir);
58  const content = generateIndexContent(records);
59  const p = indexPath(projectDir);
60  mkdirSync(dirname(p), { recursive: true });
61  writeFileSync(p, content);
62  return content;
63}