credit_card_validator

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credit_card_validator

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A Dart package that validates credit card numbers, expiration dates, and security codes (CVV/CVC) based on the type of credit card

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# credit_card_validator | Credit Card Validator
A Dart package that validates credit card numbers, expiration dates, and security codes (CVV/CVC) of a credit card. It also determines the type of credit card as part of the validation process.

This package should be used to quickly validate credit card data inputs and provide feedback to the user in your application's UI. It includes support for "potentially valid" inputs so that you can appropriately display the results to the user as they type.

**Disclaimer: This package does not verify credit card information with the user's bank or credit company. Please use a payment processing service like Stripe or Braintree for true verification, validation, and processing of the user's payment info.**

# Installing
Add dependency to `pubspec.yaml`

*Get the current version in the **Installing** tab on pub.dev*
```
dependencies:
    credit_card_validator: *current-version*
```

#  Usage
A basic example
```
import 'package:credit_card_validator/credit_card_validator.dart';

class CreditCardValidationBloc {
    CreditCardValidator _ccValidator = CreditCardValidator()

bool validateCreditCardInfo(string ccNum, string expDate, string cvv, ...) {
        var ccNumResults = _ccValidator.validateCCNum(ccNum);
        var expDateResults = _ccValidator.validateExpDate(expDate);
        var cvvResults = _ccValidator.validateCVV(cvv, ccNumResults.ccType);
        ...

if(ccNumResults.isPotentiallyValid) {
            # Call UI code that shows to the user their credit card number is invalid
            displayInvalidCardNumber();
        }
    }
}

```

If multiple card types are detected then the returned message will include the list of conflicting cards. You can then edit/remove the cards as needed using the API available in `credit_card_type_detector`

# Features
* Default supported cards:
  * Visa
  * Mastercard
  * American Express
  * Discover
  * Diners Club
  * JCB
  * Union Pay
  * Maestro
  * Mir
  * Elo
  * Hiper/Hipercard
* Custom defined credit cards

# Inspiration Repo
This package is inspired by [Braintree's Credit Card Validator JS package](https://github.com/braintree/card-validator)

# Related Repos
* [Credit Card Type Detector - GitHub](https://github.com/cholojuanito/credit_card_type_detector)

# Author
Cholojuanito (Tanner Davis) - *Creator and repo owner* - [Github Profile](https://github.com/cholojuanito)

# Support
If you think this package is helpful, tell your friends, give it a star on GitHub, and a like on [pub.dev](https://pub.dev/packages/credit_card_validator)

# License
This project is licensed under the MIT License - see the [LICENSE file](LICENSE) for more details

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