// Loads the static game data and the lists of installed themes / languages.

import { buildContext } from '../engine/context.js';

async function getJson(url) {
  const response = await fetch(url);
  if (!response.ok) throw new Error(`${url}: HTTP ${response.status}`);
  return response.json();
}

// Every data file the game needs: context key -> file name in public/data/.
export const DATA_FILES = {
  rules: 'rules',
  generators: 'generators',
  upgrades: 'upgrades',
  research: 'research',
  legacy: 'legacy',
  achievements: 'achievements',
  investments: 'investments',
  tabs: 'tabs',
  endless: 'endless',
};

export async function loadGameContext() {
  const entries = await Promise.all(
    Object.entries(DATA_FILES).map(async ([key, file]) => [key, await getJson(`data/${file}.json`)]),
  );
  return buildContext(Object.fromEntries(entries));
}

/** [{ id, order, assets, locales }] discovered from public/themes/ by the server. */
export const fetchThemes = () => getJson('api/themes');

/** [{ code, name }] discovered from public/locales/ by the server. */
export const fetchLocales = () => getJson('api/locales');