// Copies the real per-variant dictionary DAWGs into the mock e2e preview output (dist-e2e/e2edict/)
// so the offline spec can create and play a real local vs_ai game (the mock's fetchDict serves these
// files — see lib/mock/client.ts). The dawgs are NEVER committed and never enter the production
// build; they live only in the throwaway dist-e2e/ that `vite preview` serves for Playwright.
//
// Source directory: E2E_DICT_DIR — in CI the fetched scrabble-dictionary release
// ($GITHUB_WORKSPACE/dawg); locally it defaults to the sibling scrabble-solver/dawg checkout. A
// missing source only warns (so the other, dawg-free specs still run); the offline spec then fails
// with an obvious HTTP 404 from fetchDict.

import { existsSync, mkdirSync, copyFileSync } from 'node:fs';
import { join } from 'node:path';

const srcDir = process.env.E2E_DICT_DIR ?? '../../scrabble-solver/dawg';
const outDir = 'dist-e2e/e2edict';

// The app's Variant enum value -> the release dawg file name (matches the movegen/parity mapping).
const dawgFor = {
  scrabble_en: 'en_sowpods',
  scrabble_ru: 'ru_scrabble',
  erudit_ru: 'ru_erudit',
};

mkdirSync(outDir, { recursive: true });
let copied = 0;
for (const [variant, file] of Object.entries(dawgFor)) {
  const src = join(srcDir, `${file}.dawg`);
  if (!existsSync(src)) {
    console.warn(`e2e-dict: missing ${src} — the offline spec will 404 (set E2E_DICT_DIR)`);
    continue;
  }
  copyFileSync(src, join(outDir, `${variant}.dawg`));
  copied++;
}
console.log(`e2e-dict: copied ${copied}/${Object.keys(dawgFor).length} dawgs from ${srcDir} -> ${outDir}`);