Batch Domain Lookup Script

README.md

This particular (ugly) script generates all 3-character .cc domain permutations and searches for which ones are available for purchase using namecheapapi.com. It outputs to console and a file called output.txt.

lookup.js

const fs = require('fs');

var requestOptions = {
  method: 'GET',
  redirect: 'follow'
};

const generate3CharacterPermutations = () => {
  const characters = 'abcdefghijklmnopqrstuvwxyz0123456789';
  const permutations = [];
  for (let i = 0; i < characters.length; i++) {
    for (let j = 0; j < characters.length; j++) {
      for (let k = 0; k < characters.length; k++) {
        permutations.push(characters[i] + characters[j] + characters[k]);
      }
    }
  }
  return permutations;
}

const searchDomains = (domains) => {
  const url = "https://aftermarket.namecheapapi.com/domain/status?domain=" + domains.join(",");
  return fetch(url, requestOptions)
    .then(response => response.text())
    .then(result => {
      const domains = JSON.parse(result).data;
      const buynowDomains = domains.filter(domain => domain.type === 'buynow');
      const output = buynowDomains.map(d => `${d.domain} - $${d.price}`).join('\n') + '\n';
      
      // Print results to console and file
      console.log(output);
      fs.appendFileSync('output.txt', output);
    })
}

const main = () => {
  const permutations = generate3CharacterPermutations();

  // Append .cc to each permutation
  const permutationsWithCC = permutations.map(permutation => permutation + '.cc');

  // Split permutations into chunks of 10
  const chunkSize = 100;
  const chunks = [];
  for (let i = 0; i < permutationsWithCC.length; i += chunkSize) {
    chunks.push(permutationsWithCC.slice(i, i + chunkSize));
  }

  // For each chunk, make a request to the API
  let promise = Promise.resolve();
  chunks.forEach(chunk => {
    // Chain promises together...
    promise = promise.then(() => searchDomains(chunk));
  });

  promise.catch(error => console.log('Error:', error));
}

main();