1  /**
 2   * TLD-based Country Detection
 3   * Detects country from domain TLD (country-code top-level domains)
 4   */
 5  
 6  // Map of ccTLDs to country codes
 7  const ccTLD_MAP = {
 8    '.com.au': 'AU',
 9    '.au': 'AU',
10    '.co.uk': 'UK',
11    '.uk': 'UK',
12    '.co.nz': 'NZ',
13    '.nz': 'NZ',
14    '.ca': 'CA',
15    '.de': 'DE',
16    '.fr': 'FR',
17    '.it': 'IT',
18    '.es': 'ES',
19    '.pt': 'PT',
20    '.nl': 'NL',
21    '.be': 'BE',
22    '.ch': 'CH',
23    '.at': 'AT',
24    '.se': 'SE',
25    '.no': 'NO',
26    '.dk': 'DK',
27    '.fi': 'FI',
28    '.ie': 'IE',
29    '.pl': 'PL',
30    '.jp': 'JP',
31    '.kr': 'KR',
32    '.cn': 'CN',
33    '.in': 'IN',
34    '.mx': 'MX',
35  };
36  
37  /**
38   * Detect country from domain TLD
39   * @param {string} domain - Domain name (e.g., "example.com.au")
40   * @returns {{countryCode: string|null, confidence: 'high'|'low', source: 'cctld'|'unknown'}}
41   */
42  export function detectCountryFromTLD(domain) {
43    if (!domain) {
44      return { countryCode: null, confidence: 'low', source: 'unknown' };
45    }
46  
47    // Check for country-code TLD match
48    for (const [tld, code] of Object.entries(ccTLD_MAP)) {
49      if (domain.endsWith(tld)) {
50        return { countryCode: code, confidence: 'high', source: 'cctld' };
51      }
52    }
53  
54    // Generic TLD (.com, .net, .org, .io, etc.) - can't determine country
55    return { countryCode: null, confidence: 'low', source: 'unknown' };
56  }
57  
58  /**
59   * Parse country code from google_domain
60   * @param {string} googleDomain - Google domain (e.g., "google.com.au")
61   * @returns {string} - Country code (e.g., "AU")
62   */
63  export function parseCountryFromGoogleDomain(googleDomain) {
64    const domainMap = {
65      'google.com.au': 'AU',
66      'google.co.uk': 'UK',
67      'google.co.nz': 'NZ',
68      'google.ca': 'CA',
69      'google.de': 'DE',
70      'google.fr': 'FR',
71      'google.it': 'IT',
72      'google.es': 'ES',
73      'google.pt': 'PT',
74      'google.nl': 'NL',
75      'google.be': 'BE',
76      'google.ch': 'CH',
77      'google.at': 'AT',
78      'google.se': 'SE',
79      'google.no': 'NO',
80      'google.dk': 'DK',
81      'google.fi': 'FI',
82      'google.ie': 'IE',
83      'google.pl': 'PL',
84      'google.co.jp': 'JP',
85      'google.jp': 'JP',
86      'google.co.kr': 'KR',
87      'google.kr': 'KR',
88      'google.cn': 'CN',
89      'google.co.in': 'IN',
90      'google.in': 'IN',
91      'google.com.mx': 'MX',
92      'google.com': 'US', // Default
93    };
94  
95    // eslint-disable-next-line security/detect-object-injection -- googleDomain is validated parameter
96    return domainMap[googleDomain] || 'US';
97  }