#!/usr/bin/env node
/**
 * Fetches a pool of disposable email addresses from Guerrilla Mail API
 * and writes them to scripts/test-emails.txt (one per line).
 *
 * Usage:  node scripts/fetch-test-emails.mjs [count]
 * Default count: 10
 */

import { writeFileSync } from 'fs';
import { fileURLToPath } from 'url';
import { dirname, join } from 'path';

const COUNT  = parseInt(process.argv[2] ?? '10', 10);
const OUT    = join(dirname(fileURLToPath(import.meta.url)), 'test-emails.txt');
const API    = 'http://api.guerrillamail.com/ajax.php';

async function fetchEmail() {
  const url = `${API}?f=get_email_address&ip=127.0.0.1&agent=resetea-test-script`;
  const res = await fetch(url);
  if (!res.ok) throw new Error(`HTTP ${res.status}`);
  const data = await res.json();
  if (!data.email_addr) throw new Error(`Unexpected response: ${JSON.stringify(data)}`);
  return data.email_addr;
}

async function main() {
  const emails = new Set();
  let attempts = 0;
  const maxAttempts = COUNT * 3;

  process.stdout.write(`Fetching ${COUNT} addresses`);

  while (emails.size < COUNT && attempts < maxAttempts) {
    attempts++;
    try {
      const addr = await fetchEmail();
      if (!emails.has(addr)) {
        emails.add(addr);
        process.stdout.write('.');
      }
      // Small delay to avoid hammering the API
      await new Promise(r => setTimeout(r, 300));
    } catch (e) {
      process.stderr.write(`\n[warn] ${e.message}`);
    }
  }

  process.stdout.write('\n');

  const lines = [...emails].join('\n') + '\n';
  writeFileSync(OUT, lines, 'utf8');
  console.log(`Saved ${emails.size} addresses → ${OUT}`);
}

main().catch(e => { console.error(e.message); process.exit(1); });