bookgrabs/src/config.js

Interactive CLI tool for LibGen ebook searches and downloads with batch processing support

// Get query from command line arguments
export function parseArgs() {
  const args = process.argv.slice(2);
  let author = '';
  let title = '';
  let query = '';
  let csvFile = '';
  let searchOptions = {
    topics: ['l', 'f'], // default: libgen + fiction
    maxResults: 25,
    resultsPerPage: 100,
    fileStatus: 'all',
    language: 'eng' // default: English
  };

  for (let i = 0; i < args.length; i++) {
    if (args[i] === '--help' || args[i] === '-h') {
      showUsage();
      process.exit(0);
    } else if (args[i] === '--author' || args[i] === '-a') {
      author = args[i + 1] || '';
      i++; // skip next argument
    } else if (args[i] === '--title' || args[i] === '-t') {
      title = args[i + 1] || '';
      i++; // skip next argument
    } else if (args[i] === '--csv' || args[i] === '-c') {
      csvFile = args[i + 1] || '';
      i++; // skip next argument
    } else if (args[i] === '--fiction') {
      searchOptions.topics = ['f']; // fiction only
    } else if (args[i] === '--nonfiction') {
      searchOptions.topics = ['l']; // libgen only (non-fiction)
    } else if (args[i] === '--comics') {
      searchOptions.topics = ['c']; // comics only
    } else if (args[i] === '--all-topics') {
      searchOptions.topics = ['l', 'c', 'f', 'a', 'm', 's']; // all topics
    } else if (args[i] === '--results' || args[i] === '-r') {
      const num = parseInt(args[i + 1], 10);
      if (num > 0) {
        searchOptions.maxResults = num;
      }
      i++; // skip next argument
    } else if (args[i] === '--page-size') {
      const size = parseInt(args[i + 1], 10);
      if ([25, 50, 100].includes(size)) {
        searchOptions.resultsPerPage = size;
      }
      i++; // skip next argument
    } else if (args[i] === '--sorted-only') {
      searchOptions.fileStatus = 'sorted';
    } else if (args[i] === '--unsorted-only') {
      searchOptions.fileStatus = 'uns';
    } else if (args[i] === '--english') {
      searchOptions.language = 'eng';
    } else if (args[i] === '--any-language') {
      searchOptions.language = null; // No language filter
    } else if (args[i] === '--language' || args[i] === '-l') {
      const lang = args[i + 1];
      if (lang && lang.length === 3) {
        searchOptions.language = lang;
      }
      i++; // skip next argument
    } else if (args[i] === '--ebooks-only') {
      searchOptions.ebooksOnly = true;
    } else if (!args[i].startsWith('-')) {
      // If no flags, treat as general search query
      query += args[i] + ' ';
    }
  }

  query = query.trim();

  // If author and title are provided, combine them for search
  if (author && title) {
    query = `${author} ${title}`;
  } else if (author) {
    query = author;
  } else if (title) {
    query = title;
  }

  return { 
    author: author.toLowerCase(), 
    title: title.toLowerCase(), 
    query, 
    csvFile,
    searchOptions 
  };
}

// Display usage information
export function showUsage() {
  console.log('BookGrabs - Interactive LibGen Book Search & Download Tool');
  console.log('');
  console.log('Usage:');
  console.log('  npx bookgrabs                    # Interactive mode (default)');
  console.log('  npx bookgrabs "search term"      # Quick search');
  console.log('  npx bookgrabs --author "Author Name" --title "Book Title"');
  console.log('  npx bookgrabs -a "Author" -t "Title"');
  console.log('  npx bookgrabs -c "path/to/books.csv"  # CSV must have author,title columns, optionally year');
  console.log('');
  console.log('Search Options:');
  console.log('  --fiction           Search fiction only');
  console.log('  --nonfiction        Search non-fiction only');
  console.log('  --comics            Search comics only');
  console.log('  --all-topics        Search all topics (fiction, non-fiction, comics, articles, magazines, standards)');
  console.log('  --results, -r NUM   Maximum number of results (default: 25)');
  console.log('  --page-size SIZE    Results per page: 25, 50, or 100 (default: 100)');
  console.log('  --sorted-only       Only search sorted files');
  console.log('  --unsorted-only     Only search unsorted files');
  console.log('  --english           Search English books only (default)');
  console.log('  --any-language      Search all languages');
  console.log('  --language, -l CODE 3-letter language code (e.g., eng, fra, deu, spa)');
  console.log('');
  console.log('Examples:');
  console.log('  npx bookgrabs --fiction "Harry Potter"');
  console.log('  npx bookgrabs --nonfiction --results 50 "JavaScript"');
  console.log('  npx bookgrabs --comics "Batman"');
  console.log('  npx bookgrabs --fiction --language fra "Harry Potter"  # French books');
  console.log('  npx bookgrabs --any-language "1984"  # All languages');
  console.log('');
  console.log('For interactive mode with a beautiful UI, run without arguments:');
  console.log('  npx bookgrabs');
}