mirror of
https://github.com/bilawalsidhu/gods-eye-view.git
synced 2026-11-04 10:24:02 +00:00
Malek
87a92c8bc4
Recognize common country names and exonyms in Radio country requests and station filtering. Keep ambiguous country names rejected.
116 lines
4.1 KiB
JavaScript
116 lines
4.1 KiB
JavaScript
const RADIO_COUNTRY_MAX_LENGTH = 80;
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const ISO_ALPHA_2_CODES = Object.freeze(`
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AD AE AF AG AI AL AM AO AQ AR AS AT AU AW AX AZ BA BB BD BE BF BG BH BI BJ BL BM BN BO BQ BR BS BT BV BW BY BZ
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CA CC CD CF CG CH CI CK CL CM CN CO CR CU CV CW CX CY CZ DE DJ DK DM DO DZ EC EE EG EH ER ES ET FI FJ FK FM FO FR
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GA GB GD GE GF GG GH GI GL GM GN GP GQ GR GS GT GU GW GY HK HM HN HR HT HU ID IE IL IM IN IO IQ IR IS IT JE JM JO
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JP KE KG KH KI KM KN KP KR KW KY KZ LA LB LC LI LK LR LS LT LU LV LY MA MC MD ME MF MG MH MK ML MM MN MO MP MQ MR
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MS MT MU MV MW MX MY MZ NA NC NE NF NG NI NL NO NP NR NU NZ OM PA PE PF PG PH PK PL PM PN PR PS PT PW PY QA RE RO
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RS RU RW SA SB SC SD SE SG SH SI SJ SK SL SM SN SO SR SS ST SV SX SY SZ TC TD TF TG TH TJ TK TL TM TN TO TR TT TV
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TW TZ UA UG UM US UY UZ VA VC VE VG VI VN VU WF WS YE YT ZA ZM ZW
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`.trim().split(/\s+/));
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const ISO_ALPHA_2_SET = new Set(ISO_ALPHA_2_CODES);
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const ENGLISH_REGION_NAMES = typeof Intl?.DisplayNames === 'function'
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? new Intl.DisplayNames(['en'], { type: 'region' })
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: null;
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function countryKey(value) {
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return String(value || '')
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.normalize('NFKC')
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.toLocaleLowerCase('en')
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.replace(/[‐‑‒–—-]+/g, ' ')
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.replace(/[.’']/g, '')
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.replace(/&/g, ' and ')
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.replace(/\s+/g, ' ')
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.trim();
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}
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const COUNTRY_NAME_TO_CODE = new Map();
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for (const code of ISO_ALPHA_2_CODES) {
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const displayName = ENGLISH_REGION_NAMES?.of(code);
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if (displayName && displayName !== code) COUNTRY_NAME_TO_CODE.set(countryKey(displayName), code);
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}
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for (const [name, code] of Object.entries({
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america: 'US',
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'united states of america': 'US',
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usa: 'US',
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'u s': 'US',
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'u s a': 'US',
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britain: 'GB',
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'great britain': 'GB',
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uk: 'GB',
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'u k': 'GB',
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'south korea': 'KR',
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'north korea': 'KP',
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russia: 'RU',
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vietnam: 'VN',
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'czech republic': 'CZ',
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'ivory coast': 'CI',
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laos: 'LA',
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bolivia: 'BO',
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tanzania: 'TZ',
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moldova: 'MD',
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brunei: 'BN',
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'cape verde': 'CV',
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'the netherlands': 'NL',
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// Common English names and exonyms whose code is not reachable through the
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// Intl.DisplayNames primary label, so they would otherwise fail closed
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// (verified against ICU 77): TR resolves only as 'Türkiye', MM only as
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// 'Myanmar (Burma)', AE only as 'United Arab Emirates', SZ as 'Eswatini',
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// TL as 'Timor-Leste'. Each maps to exactly one country; ambiguous names
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// (e.g. bare "Congo") are deliberately left to fail closed.
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turkey: 'TR',
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turkiye: 'TR',
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myanmar: 'MM',
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burma: 'MM',
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uae: 'AE',
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holland: 'NL',
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swaziland: 'SZ',
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'east timor': 'TL',
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'cabo verde': 'CV',
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vatican: 'VA',
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})) COUNTRY_NAME_TO_CODE.set(countryKey(name), code);
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function canonicalCountryName(code) {
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return ENGLISH_REGION_NAMES?.of(code) || code;
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}
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/**
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* Normalize a bounded country code or English/common country name.
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* Invalid or ambiguous values fail closed instead of broadening selection.
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*/
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export function normalizeRadioCountryInput(value) {
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if (value === undefined || value === null || value === '') {
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return Object.freeze({ valid: true, empty: true, code: '', name: '' });
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}
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if (typeof value !== 'string' || value.length > RADIO_COUNTRY_MAX_LENGTH) {
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return Object.freeze({ valid: false, empty: false, code: '', name: '' });
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}
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const trimmed = value.normalize('NFKC').trim().replace(/\s+/g, ' ');
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if (
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!trimmed
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|| trimmed.length > RADIO_COUNTRY_MAX_LENGTH
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|| /[\u0000-\u001f\u007f]/.test(trimmed)
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|| !/^[\p{L}\p{M}.&'’()\-\s]+$/u.test(trimmed)
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) return Object.freeze({ valid: false, empty: false, code: '', name: '' });
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const possibleCode = trimmed.toUpperCase();
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const code = ISO_ALPHA_2_SET.has(possibleCode)
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? possibleCode
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: COUNTRY_NAME_TO_CODE.get(countryKey(trimmed)) || '';
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if (!code) return Object.freeze({ valid: false, empty: false, code: '', name: '' });
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return Object.freeze({
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valid: true,
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empty: false,
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code,
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name: canonicalCountryName(code),
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});
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}
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/** Return whether a value is a recognized ISO 3166-1 alpha-2 code. */
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export function isRadioCountryCode(value) {
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return typeof value === 'string' && ISO_ALPHA_2_SET.has(value.toUpperCase());
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}
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