import { chownSync, copyFileSync, existsSync, mkdirSync, readdirSync, statSync } from 'node:fs';
import { resolve } from 'node:path';

/** The demo plugin the seed projects switch on (#119); `DEMO_PLUGIN` is its file name. */
export const DEMO_PLUGIN = 'demo-plugin.js';

/**
 * Puts the plugins that ship with the repository (`plugins/*.js`) where the editor loads them from,
 * `data/plugins/`. Used by the build and by the e2e seeder.
 *
 * Which of them run is not decided here any more (#119): a plugin is switched on by the project
 * that wants it, so the seeders name it in the projects they write. What lies in `data/plugins/`
 * is only what is available.
 *
 * The API reads the folder as the web server's user. When this runs as root (the build on the
 * host), the folder and what it wrote are handed to the owner of `data/`, which is that user.
 */
export function publishPlugins(root) {
  const target = resolve(root, 'data/plugins');
  mkdirSync(target, { recursive: true });
  const written = [target];
  for (const file of readdirSync(resolve(root, 'plugins')).filter((f) => f.endsWith('.js'))) {
    copyFileSync(resolve(root, 'plugins', file), resolve(target, file));
    written.push(resolve(target, file));
  }

  if (process.getuid?.() === 0) {
    const { uid, gid } = statSync(resolve(root, 'data'));
    for (const path of written) if (existsSync(path)) chownSync(path, uid, gid);
  }
}