// Minimal .env loader (no dependency). Reads <project root>/.env
import fs from "node:fs";
import path from "node:path";
import { fileURLToPath } from "node:url";

const here = path.dirname(fileURLToPath(import.meta.url));
export const PROJECT_ROOT = path.resolve(here, "..", "..");

export function loadEnv() {
  // Docker's env_file keeps stray spaces/tabs after "=", which breaks tokens. Trim everything we read.
  for (const [k, v] of Object.entries(process.env)) if (/^[A-Z0-9_]+$/.test(k) && v !== v.trim()) process.env[k] = v.trim();
  const file = path.join(PROJECT_ROOT, ".env");
  if (!fs.existsSync(file)) return;
  for (const line of fs.readFileSync(file, "utf8").split(/\r?\n/)) {
    const m = line.match(/^\s*([A-Z0-9_]+)\s*=\s*(.*)\s*$/);
    if (!m || line.trim().startsWith("#")) continue;
    let v = m[2];
    if ((v.startsWith('"') && v.endsWith('"')) || (v.startsWith("'") && v.endsWith("'"))) v = v.slice(1, -1);
    if (!(m[1] in process.env)) process.env[m[1]] = v;
  }
}