/* global console */
// Generates src/cli-catalogs.ts: a static import map of the CLI-relevant
// catalogs for every locale present under locales/. The terminal UI bundles
// catalogs statically (tsup, no lazy loading), so it needs an explicit import
// map rather than a dynamic loader. Driving this off the locales/ directory
// listing keeps "add a language" a no-code operation on the CLI side: add the
// locale (via `i18next-cli sync`), regenerate, done.
import { readdirSync, readFileSync, writeFileSync } from "node:fs";
import { dirname, join } from "node:path";
import { fileURLToPath } from "node:url";

const here = dirname(fileURLToPath(import.meta.url));
const root = join(here, "..");
const localesDir = join(root, "locales");

// Single source of truth shared with src/config.ts and the dashboard scripts.
const CLI_NAMESPACES = JSON.parse(readFileSync(join(root, "namespaces.json"), "utf8")).cli;

const locales = readdirSync(localesDir, { withFileTypes: true })
  .filter((d) => d.isDirectory())
  .map((d) => d.name)
  .sort();

const ident = (s) => s.replace(/[^a-zA-Z0-9]/g, "_");

const imports = [];
const entries = [];
for (const lng of locales) {
  const nsLines = [];
  for (const ns of CLI_NAMESPACES) {
    const id = `${ident(lng)}_${ns}`;
    imports.push(`import ${id} from "../locales/${lng}/${ns}.json";`);
    nsLines.push(`    ${ns}: ${id},`);
  }
  entries.push(`  "${lng}": {\n${nsLines.join("\n")}\n  },`);
}

const out = [
  "// GENERATED by scripts/gen-cli-catalogs.mjs — do not edit by hand.",
  "// Run `pnpm --filter @fusion/i18n gen:cli-catalogs` to regenerate.",
  ...imports,
  "",
  "export const cliResources = {",
  ...entries,
  "} as const;",
  "",
].join("\n");

writeFileSync(join(root, "src", "cli-catalogs.ts"), out);
console.log(`Generated cli-catalogs.ts for ${locales.length} locale(s): ${locales.join(", ")}`);