#!/usr/bin/env node
/**
 * i18n:remove-language – ta bort ett språk rent (motsatsen till add-language).
 *
 *   node scripts/i18n-remove-language.mjs <kod>
 *   ex:  node scripts/i18n-remove-language.mjs el
 *
 * Tar bort: locale-mappen, profile.language.<kod>-raden i alla filer, och de tre
 * raderna i i18n.ts (import + SUPPORTED_LANGUAGES + resources). Endast radborttag
 * → minimala diffar. Kör i18n:check + typecheck efteråt för att bekräfta.
 */
import { rmSync, readFileSync, writeFileSync, existsSync, readdirSync, statSync } from "node:fs";
import { join } from "node:path";

const ROOT = process.cwd(); // apps/mobile
const LOC = join(ROOT, "src/locales");
const I18N = join(ROOT, "src/lib/i18n.ts");

const code = process.argv[2];
if (!code || !/^[a-z]{2,3}$/.test(code)) {
  console.error("Användning: node scripts/i18n-remove-language.mjs <kod>   (t.ex. el)");
  process.exit(1);
}
if (code === "sv") {
  console.error("Kan inte ta bort sv – svenska är källspråket.");
  process.exit(1);
}
if (!existsSync(join(LOC, code))) {
  console.error(`src/locales/${code} finns inte – inget att ta bort.`);
  process.exit(1);
}

// 1. locale-mappen
rmSync(join(LOC, code), { recursive: true, force: true });

// 2. profile.language.<kod>-raden ur alla kvarvarande locale-filer
const labelNeedle = `"profile.language.${code}":`;
for (const lang of readdirSync(LOC).filter((d) => statSync(join(LOC, d)).isDirectory())) {
  const p = join(LOC, lang, "common.json");
  const lines = readFileSync(p, "utf8").split("\n");
  const kept = lines.filter((l) => !l.includes(labelNeedle));
  if (kept.length !== lines.length) writeFileSync(p, kept.join("\n"));
}

// 3. de tre raderna i i18n.ts
const importNeedle = `import ${code} from "../locales/${code}/common.json";`;
const supportedNeedle = `code: "${code}",`;
const resourceRe = new RegExp(`^\\s+${code}: \\{ common: ${code} \\},$`);
const kept = readFileSync(I18N, "utf8")
  .split("\n")
  .filter((l) => l.trim() !== importNeedle && !l.includes(supportedNeedle) && !resourceRe.test(l));
writeFileSync(I18N, kept.join("\n"));

console.log(`✓ Tog bort språket "${code}" (locale-mapp, etikett i alla filer, i18n.ts-rader).`);
console.log(`Kör: pnpm --filter @app/mobile i18n:check && pnpm --filter @app/mobile typecheck`);