export const DB_BASE_URL = process.env.NODE_ENV === 'development' ? '' : 'https://dbd-db.neru.rip';

const _cache = new Map<string, Promise<any>>();

export function fetchDB<T = any>(path: string): Promise<T> {
  if (!_cache.has(path)) {
    _cache.set(
      path,
      fetch(`${DB_BASE_URL}${path}`)
        .then(r => {
          if (!r.ok) throw new Error(`[db] ${r.status} ${path}`);
          return r.json();
        })
        .catch(err => {
          _cache.delete(path); 
          console.error(err);
          return [];
        })
    );
  }
  return _cache.get(path)!;
}

export const fetchCharacters     = () => fetchDB('/data/characters.json');
export const fetchCustomizations = () => fetchDB('/data/customization_items.json');
export const fetchItems          = () => fetchDB('/data/items.json');
export const fetchOfferings      = () => fetchDB('/data/offerings.json');
export const fetchDLCs           = () => fetchDB('/data/dlcs.json');