backend v4 half

2025-07-18 09:20:40 +02:00
parent aba7a506ad
commit 725516ad6c
4183 changed files with 217684 additions and 75056 deletions
@@ -0,0 +1,52 @@
+import Metadata from '../metadata.js'
+import getNumberType from './getNumberType.js'
+
+export default function getCountryByNationalNumber(nationalPhoneNumber, {
+	countries,
+	defaultCountry,
+	metadata
+}) {
+	// Re-create `metadata` because it will be selecting a `country`.
+	metadata = new Metadata(metadata)
+
+	// const matchingCountries = []
+
+	for (const country of countries) {
+		metadata.country(country)
+		// "Leading digits" patterns are only defined for about 20% of all countries.
+		// By definition, matching "leading digits" is a sufficient but not a necessary
+		// condition for a phone number to belong to a country.
+		// The point of "leading digits" check is that it's the fastest one to get a match.
+		// https://gitlab.com/catamphetamine/libphonenumber-js/blob/master/METADATA.md#leading_digits
+		// I'd suppose that "leading digits" patterns are mutually exclusive for different countries
+		// because of the intended use of that feature.
+		if (metadata.leadingDigits()) {
+			if (nationalPhoneNumber &&
+				nationalPhoneNumber.search(metadata.leadingDigits()) === 0) {
+				return country
+			}
+		}
+		// Else perform full validation with all of those
+		// fixed-line/mobile/etc regular expressions.
+		else if (getNumberType({ phone: nationalPhoneNumber, country }, undefined, metadata.metadata)) {
+			// If both the `defaultCountry` and the "main" one match the phone number,
+			// don't prefer the `defaultCountry` over the "main" one.
+			// https://gitlab.com/catamphetamine/libphonenumber-js/-/issues/154
+			return country
+			// // If the `defaultCountry` is among the `matchingCountries` then return it.
+			// if (defaultCountry) {
+			// 	if (country === defaultCountry) {
+			// 		return country
+			// 	}
+			// 	matchingCountries.push(country)
+			// } else {
+			// 	return country
+			// }
+		}
+	}
+
+	// // Return the first ("main") one of the `matchingCountries`.
+	// if (matchingCountries.length > 0) {
+	// 	return matchingCountries[0]
+	// }
+}