25-7-26-1

lib/controller/local/phone_intel/phone_number.dart

@@ -0,0 +1,79 @@
+import 'countries.dart';
+
+class NumberTooLongException implements Exception {}
+
+class NumberTooShortException implements Exception {}
+
+class InvalidCharactersException implements Exception {}
+
+class PhoneNumber {
+  String countryISOCode;
+  String countryCode;
+  String number;
+
+  PhoneNumber({
+    required this.countryISOCode,
+    required this.countryCode,
+    required this.number,
+  });
+
+  factory PhoneNumber.fromCompleteNumber({required String completeNumber}) {
+    if (completeNumber == "") {
+      return PhoneNumber(countryISOCode: "", countryCode: "", number: "");
+    }
+
+    try {
+      Country country = getCountry(completeNumber);
+      String number;
+      if (completeNumber.startsWith('+')) {
+        number = completeNumber.substring(1 + country.dialCode.length + country.regionCode.length);
+      } else {
+        number = completeNumber.substring(country.dialCode.length + country.regionCode.length);
+      }
+      return PhoneNumber(
+          countryISOCode: country.code, countryCode: country.dialCode + country.regionCode, number: number);
+    } on InvalidCharactersException {
+      rethrow;
+      // ignore: unused_catch_clause
+    } on Exception catch (e) {
+      return PhoneNumber(countryISOCode: "", countryCode: "", number: "");
+    }
+  }
+
+  bool isValidNumber() {
+    Country country = getCountry(completeNumber);
+    if (number.length < country.minLength) {
+      throw NumberTooShortException();
+    }
+
+    if (number.length > country.maxLength) {
+      throw NumberTooLongException();
+    }
+    return true;
+  }
+
+  String get completeNumber {
+    return countryCode + number;
+  }
+
+  static Country getCountry(String phoneNumber) {
+    if (phoneNumber == "") {
+      throw NumberTooShortException();
+    }
+
+    final validPhoneNumber = RegExp(r'^[+0-9]*[0-9]*$');
+
+    if (!validPhoneNumber.hasMatch(phoneNumber)) {
+      throw InvalidCharactersException();
+    }
+
+    if (phoneNumber.startsWith('+')) {
+      return countries
+          .firstWhere((country) => phoneNumber.substring(1).startsWith(country.dialCode + country.regionCode));
+    }
+    return countries.firstWhere((country) => phoneNumber.startsWith(country.dialCode + country.regionCode));
+  }
+
+  @override
+  String toString() => 'PhoneNumber(countryISOCode: $countryISOCode, countryCode: $countryCode, number: $number)';
+}