// BEFORE: Raw residential proxy (manual CAPTCHA handling)
const oldProxy = {
  host: 'brd.superproxy.io',
  port: 22225,  // Old residential port
  auth: {
    username: `brd-customer-${CID}-zone-residential_zone`,
    password: OLD_PASSWORD,
  },
};

// AFTER: Web Unlocker (automatic CAPTCHA, fingerprinting)
const newProxy = {
  host: 'brd.superproxy.io',
  port: 33335,  // Web Unlocker port
  auth: {
    username: `brd-customer-${CID}-zone-web_unlocker1`,
    password: NEW_PASSWORD,
  },
};
// Changes: port 22225 → 33335, zone name, password
// Web Unlocker handles CAPTCHAs automatically — remove manual solving code

// BEFORE: Self-hosted Puppeteer with proxy
import puppeteer from 'puppeteer';
const browser = await puppeteer.launch({
  args: [`--proxy-server=http://brd.superproxy.io:22225`],
});

// AFTER: Bright Data Scraping Browser (managed browser)
import puppeteer from 'puppeteer-core';
const AUTH = `brd-customer-${CID}-zone-scraping_browser1:${PASSWORD}`;
const browser = await puppeteer.connect({
  browserWSEndpoint: `wss://${AUTH}@brd.superproxy.io:9222`,
});
// Changes: launch → connect, local browser → remote WebSocket
// Remove: browser install, proxy args, CAPTCHA solving libraries

// BEFORE: Datasets API v2
const v2Response = await fetch(
  `https://api.brightdata.com/dca/trigger?collector=${collectorId}`,
  { method: 'POST', headers: { 'Authorization': `Bearer ${TOKEN}` }, body: JSON.stringify(input) }
);

// AFTER: Datasets API v3 (current)
const v3Response = await fetch(
  `https://api.brightdata.com/datasets/v3/trigger?dataset_id=${datasetId}&format=json`,
  { method: 'POST', headers: { 'Authorization': `Bearer ${TOKEN}`, 'Content-Type': 'application/json' }, body: JSON.stringify(input) }
);
// Changes: /dca/trigger → /datasets/v3/trigger, collector → dataset_id
// v3 adds: format parameter, webhook delivery, snapshot status polling

# Create migration branch
git checkout -b migrate/brightdata-zone-upgrade

# Update environment variables
# OLD
BRIGHTDATA_ZONE=residential1
# NEW
BRIGHTDATA_ZONE=web_unlocker1
BRIGHTDATA_ZONE_PASSWORD=new_password

# Test against staging
BRIGHTDATA_ZONE=web_unlocker1_staging npm test

# Verify scraping still works
npm run scrape -- --url https://example.com --dry-run

# Keep old zone active during migration window
# Rollback = switch BRIGHTDATA_ZONE back to old zone name
export BRIGHTDATA_ZONE=old_zone_name
export BRIGHTDATA_ZONE_PASSWORD=old_password