// `ctl-dev-kit dashboard-manifest <src> <dist>`: a fleet dashboard's build
// step (task 122 K). Writes `<dist>/dashboard.json`, which norsk-mgr reads at
// upload for what the dashboard uses, from the calls in `<src>`.

import { mkdirSync, readdirSync, readFileSync, statSync, writeFileSync } from "node:fs";
import { join, relative } from "node:path";
import { dashboardUses, type UsesResult } from "./uses.ts";

const SOURCE = /\.(m?[jt]sx?)$/;
const TEST = /\.(test|spec)\.[^.]+$/;

function sources(dir: string): string[] {
  const out: string[] = [];
  for (const name of readdirSync(dir)) {
    if (name === "node_modules") continue;
    const full = join(dir, name);
    if (statSync(full).isDirectory()) out.push(...sources(full));
    else if (SOURCE.test(name) && !TEST.test(name)) out.push(full);
  }
  return out;
}

export function writeDashboardManifest(srcDir: string, distDir: string): UsesResult {
  const files = sources(srcDir).map((path) => ({ path: relative(srcDir, path), source: readFileSync(path, "utf8") }));
  const uses = dashboardUses(files);
  if (uses.status === "error") return uses;
  mkdirSync(distDir, { recursive: true });
  writeFileSync(join(distDir, "dashboard.json"), `${JSON.stringify({ uses: uses.value }, null, 2)}\n`);
  return uses;
}