n8r/stripe_native_card_field
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Add test, fixed auto focusing and error handling of invalid dates

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This commit is contained in:
Nathan Anderson
2023-11-14 15:09:03 -07:00
parent 88020f4d15
commit f9e758fda5
135 changed files with 5232 additions and 183 deletions
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lib/card_details.dart
+68 -55
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@@ -1,20 +1,29 @@
import 'package:flutter/foundation.dart';
class CardDetails {
CardDetails({required this.cardNumber, required String? securityCode, required this.expirationDate}) {
CardDetails({
required dynamic cardNumber,
required String? securityCode,
required this.expirationString,
required this.postalCode,
}) : _cardNumber = cardNumber {
this.securityCode = int.tryParse(securityCode ?? '');
checkIsValid();
}
factory CardDetails.blank() {
return CardDetails(cardNumber: null, securityCode: null, expirationDate: null);
return CardDetails(cardNumber: null, securityCode: null, expirationString: null, postalCode: null);
}
String? cardNumber;
String? get cardNumber => _cardNumber?.replaceAll(' ', '');
set cardNumber(String? num) => _cardNumber = num;
String? _cardNumber;
int? securityCode;
String? postalCode;
String? expirationDate;
String? expirationString;
DateTime? expirationDate;
bool _complete = false;
ValidState _validState = ValidState.blank;
int _lastCheckHash = 0;
@@ -25,7 +34,8 @@ class CardDetails {
return _validState;
}
bool get cardNumberFilled => provider == null || provider?.cardLength == cardNumber?.replaceAll(' ', '').length;
bool get cardNumberFilled =>
_cardNumber == null ? false : (provider?.cardLength ?? 16) == _cardNumber!.replaceAll(' ', '').length;
bool get isComplete {
checkIsValid();
@@ -43,12 +53,12 @@ class CardDetails {
}
_lastCheckHash = currentHash;
if (cardNumber == null && expirationDate == null && securityCode == null && postalCode == null) {
if (_cardNumber == null && expirationString == null && securityCode == null && postalCode == null) {
_complete = false;
_validState = ValidState.blank;
return;
}
final nums = cardNumber!
final nums = _cardNumber!
.replaceAll(' ', '')
.split('')
.map(
@@ -60,24 +70,30 @@ class CardDetails {
_validState = ValidState.invalidCard;
return;
}
if (cardNumber == null || !cardNumberFilled) {
if (_cardNumber == null || !cardNumberFilled) {
_complete = false;
_validState = ValidState.missingCard;
return;
}
if (expirationDate == null) {
if (expirationString == null) {
_complete = false;
_validState = ValidState.missingDate;
return;
}
final expSplits = expirationDate!.split('/');
final expSplits = expirationString!.split('/');
if (expSplits.length != 2 || expSplits.last == '') {
_complete = false;
_validState = ValidState.missingDate;
return;
}
final date = DateTime(2000 + int.parse(expSplits.last),
int.parse(expSplits.first[0] == '0' ? expSplits.first[1] : expSplits.first));
final month = int.parse(expSplits.first[0] == '0' ? expSplits.first[1] : expSplits.first);
if (month < 1 || month > 12) {
_complete = false;
_validState = ValidState.invalidMonth;
return;
}
final year = 2000 + int.parse(expSplits.last);
final date = DateTime(year, month);
if (date.isBefore(DateTime.now())) {
_complete = false;
_validState = ValidState.dateTooEarly;
@@ -87,6 +103,7 @@ class CardDetails {
_validState = ValidState.dateTooLate;
return;
}
expirationDate = date;
if (securityCode == null) {
_complete = false;
_validState = ValidState.missingCVC;
@@ -114,42 +131,42 @@ class CardDetails {
}
int get hash {
return Object.hash(cardNumber, expirationDate, securityCode, postalCode);
return Object.hash(_cardNumber, expirationString, securityCode, postalCode);
}
void detectCardProvider() {
bool found = false;
if (cardNumber == null) {
if (_cardNumber == null) {
return;
}
for (var cardPvd in providers) {
if (cardPvd.INN_VALID_NUMS != null) {
if (cardPvd.innValidNums != null) {
// trim card number to correct length
String trimmedNum = cardNumber!;
String innNumStr = '${cardPvd.INN_VALID_NUMS!.first}';
String trimmedNum = _cardNumber!;
String innNumStr = '${cardPvd.innValidNums!.first}';
if (trimmedNum.length > innNumStr.length) {
trimmedNum = trimmedNum.substring(0, innNumStr.length);
}
final num = int.tryParse(trimmedNum);
if (num == null) continue;
if (cardPvd.INN_VALID_NUMS!.contains(num)) {
if (cardPvd.innValidNums!.contains(num)) {
provider = cardPvd;
found = true;
break;
}
}
if (cardPvd.INN_VALID_RANGES != null) {
if (cardPvd.innValidRanges != null) {
// trim card number to correct length
String trimmedNum = cardNumber!;
String innNumStr = '${cardPvd.INN_VALID_RANGES!.first.low}';
String trimmedNum = _cardNumber!;
String innNumStr = '${cardPvd.innValidRanges!.first.low}';
if (trimmedNum.length > innNumStr.length) {
trimmedNum = trimmedNum.substring(0, innNumStr.length);
}
final num = int.tryParse(trimmedNum);
if (num == null) continue;
if (cardPvd.INN_VALID_RANGES!.any((range) => range.isWithin(num))) {
if (cardPvd.innValidRanges!.any((range) => range.isWithin(num))) {
provider = cardPvd;
found = true;
break;
@@ -157,13 +174,12 @@ class CardDetails {
}
}
if (!found) provider = null;
// print('Got provider $provider');
}
@override
String toString() {
return 'Number: "$cardNumber" - Exp: "$expirationDate" CVC: $securityCode Zip: "$postalCode"';
}
String toString() {
return 'Number: "$_cardNumber" - Exp: "$expirationString" CVC: $securityCode Zip: "$postalCode"';
}
}
enum ValidState {
@@ -173,6 +189,7 @@ enum ValidState {
missingCard,
invalidCard,
missingDate,
invalidMonth,
dateTooEarly,
dateTooLate,
missingCVC,
@@ -182,31 +199,27 @@ enum ValidState {
}
enum CardProviderID {
AmericanExpress,
DinersClub,
DiscoverCard,
Mastercard,
JCB,
Visa,
americanExpress,
dinersClub,
discoverCard,
mastercard,
jcb,
visa,
}
class CardProvider {
CardProviderID id;
List<int>? INN_VALID_NUMS;
List<Range>? INN_VALID_RANGES;
List<int>? innValidNums;
List<Range>? innValidRanges;
int cardLength;
int cvcLength;
CardProvider(
{required this.id,
required this.cardLength,
required this.cvcLength,
this.INN_VALID_NUMS,
this.INN_VALID_RANGES}) {
{required this.id, required this.cardLength, required this.cvcLength, this.innValidNums, this.innValidRanges}) {
// Must provide one or the other
assert(INN_VALID_NUMS != null || INN_VALID_RANGES != null);
assert(innValidNums != null || innValidRanges != null);
// Do not provide empty list of valid nums
assert(INN_VALID_NUMS == null || INN_VALID_NUMS!.isNotEmpty);
assert(innValidNums == null || innValidNums!.isNotEmpty);
}
@override
@@ -230,41 +243,41 @@ class Range {
List<CardProvider> providers = [
CardProvider(
id: CardProviderID.AmericanExpress,
id: CardProviderID.americanExpress,
cardLength: 15,
cvcLength: 4,
INN_VALID_NUMS: [34, 37],
innValidNums: [34, 37],
),
CardProvider(
id: CardProviderID.DinersClub,
id: CardProviderID.dinersClub,
cardLength: 16,
cvcLength: 3,
INN_VALID_NUMS: [30, 36, 38, 39],
innValidNums: [30, 36, 38, 39],
),
CardProvider(
id: CardProviderID.DiscoverCard,
id: CardProviderID.discoverCard,
cardLength: 16,
cvcLength: 3,
INN_VALID_NUMS: [60, 65],
INN_VALID_RANGES: [Range(low: 644, high: 649)],
innValidNums: [60, 65],
innValidRanges: [Range(low: 644, high: 649)],
),
CardProvider(
id: CardProviderID.JCB,
id: CardProviderID.jcb,
cardLength: 16,
cvcLength: 3,
INN_VALID_NUMS: [35],
innValidNums: [35],
),
CardProvider(
id: CardProviderID.Mastercard,
id: CardProviderID.mastercard,
cardLength: 16,
cvcLength: 3,
INN_VALID_RANGES: [Range(low: 22, high: 27), Range(low: 51, high: 55)],
innValidRanges: [Range(low: 22, high: 27), Range(low: 51, high: 55)],
),
CardProvider(
id: CardProviderID.Visa,
id: CardProviderID.visa,
cardLength: 16,
cvcLength: 3,
INN_VALID_NUMS: [4],
innValidNums: [4],
)
];