import { readFileSync, existsSync } from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';

/**
 * Minimal .env loader (no dependency): loads <repo>/.env into process.env when a key is not
 * already set. Called once at worker/CLI startup so `env()` from @rareindex/shared sees secrets.
 */
export function loadDotenv(): void {
  const root = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '../..');
  for (const file of ['.env', '.env.local']) {
    const p = path.join(root, file);
    if (!existsSync(p)) continue;
    for (const line of readFileSync(p, 'utf8').split('\n')) {
      const m = line.match(/^\s*(?:export\s+)?([A-Za-z_][A-Za-z0-9_]*)\s*=\s*(.*)\s*$/);
      if (!m) continue;
      let v = m[2]!;
      if ((v.startsWith('"') && v.endsWith('"')) || (v.startsWith("'") && v.endsWith("'"))) v = v.slice(1, -1);
      if (process.env[m[1]!] === undefined) process.env[m[1]!] = v;
    }
  }
}

export const REPO_ROOT = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '../..');