// Load presets from disk. Each preset is a JSON file; index.json is the manifest
// used to render the picker cards. The store is created with the resolved presets
// directory so it works from repo root (dev) and /app (Docker) alike.
import { readFileSync } from 'node:fs';
import type { Preset, PresetMeta } from '../shared/types';

export interface PresetStore {
  listMeta(): PresetMeta[];
  get(id: string): Preset | null;
}

export function createPresetStore(dir: string): PresetStore {
  const manifest = JSON.parse(readFileSync(`${dir}/index.json`, 'utf8')) as PresetMeta[];
  return {
    listMeta() {
      return manifest;
    },
    get(id: string) {
      try {
        return JSON.parse(readFileSync(`${dir}/${id}.json`, 'utf8')) as Preset;
      } catch {
        return null;
      }
    },
  };
}