Credit Card Generator

* Credit Card Validator Tool
* Provides comprehensive credit card validation with custom options.
*
* Usage:
* var options = {
*   customCardTypes: [
*     {
*       name: 'CustomCard',
*       pattern: '^123',
*       valid_length: [16]
*     },
*     // Add more custom card types as needed
*   ],
*   useJQuery: true
* };
*
* var creditCardValidator = new CreditCardValidator(options);
* var creditCardNumber = '4111-1111-1111-1111';
* var expirationDate = '12/25';
* var cardholderName = 'John Doe';
*
* creditCardValidator.validateCreditCard(creditCardNumber, expirationDate, cardholderName, function (error, result) {
*   if (error) {
*     console.error('Validation failed:', error.message);
*   } else {
*     console.log('Validation result:', result);
*   }
* });
*/
var CreditCardValidator = (function () {
function Trie() {
this.trie = {};
this.push = function (value) {
value = value.toString();
var obj = this.trie;
for (var i = 0; i < value.length; i++) {
var char = value[i];
if (obj[char] == null) {
obj[char] = (i === value.length - 1) ? null : {};
}
obj = obj[char];
}
};
this.find = function (value) {
value = value.toString();
var obj = this.trie;
for (var i = 0; i < value.length; i++) {
var char = value[i];
if (obj.hasOwnProperty(char)) {
if (obj[char] === null) {
return true;
}
} else {
return false;
}
obj = obj[char];
}
};
}
function Range(trie1) {
if (!(trie1 instanceof Trie)) {
throw new Error('Range constructor requires a Trie parameter');
}
this.trie = trie1;
this.rangeWithString = function (ranges) {
if (typeof ranges !== 'string') {
throw new Error('rangeWithString requires a string parameter');
}
ranges = ranges.replace(/ /g, '');
ranges = ranges.split(',');
for (var j = 0; j < ranges.length; j++) {
var range = ranges[j];
if (r = range.match(/^(\d+)-(\d+)$/)) {
for (var n = parseInt(r[1]); n <= parseInt(r[2]); n++) {
this.trie.push(n);
}
} else if (range.match(/^\d+$/)) {
this.trie.push(range);
} else {
throw new Error("Invalid range '" + r + "'");
}
}
return new Range(this.trie);
};
this.match = function (number) {
return this.trie.find(number);
};
}
function CreditCardValidator(options) {
options = options || {};
var trie = new Trie();
var cardTypes = [
{
name: 'Visa',
pattern: '^4',
valid_length: [13, 16]
},
{
name: 'MasterCard',
pattern: '^(5[1-5]|2[2-7])',
valid_length: [16]
},
{
name: 'Amex',
pattern: '^3[47]',
valid_length: [15]
},
// Add more card types as needed
];
var customCardTypes = options.customCardTypes || [];
var allCardTypes = cardTypes.concat(customCardTypes);
function normalize(number) {
return number.replace(/[ -]/g, '');
}
function validateCardNumber(number) {
for (var i = 0; i < allCardTypes.length; i++) {
var cardType = allCardTypes[i];
if (new RegExp(cardType.pattern).test(number)) {
return {
cardType: cardType.name,
isValid: trie.find(number),
validLengths: cardType.valid_length
};
}
}
return {
cardType: 'Unknown',
isValid: false,
validLengths: []
};
}
function isExpired(expirationDate) {
var currentDate = new Date();
var inputDate = new Date(expirationDate);
return inputDate < currentDate;
}
function validateCardholderName(cardholderName) {
return /^[a-zA-Z\s]+$/.test(cardholderName);
}
this.validateCreditCard = function (creditCardNumber, expirationDate, cardholderName, callback) {
try {
if (options.useJQuery && typeof window.jQuery === 'undefined') {
throw new Error('jQuery is required for credit card validation');
}
var normalizedNumber = normalize(creditCardNumber);
var validationResult = validateCardNumber(normalizedNumber);
validationResult.isExpired = isExpired(expirationDate);
validationResult.isValidCardholderName = validateCardholderName(cardholderName);
if (typeof callback === 'function') {
callback(null, validationResult);
}
return validationResult;
} catch (error) {
if (typeof callback === 'function') {
callback(error, null);
}
return null;
}
};
}
return CreditCardValidator;
})();
// Help Menu
console.log('Credit Card Validator Tool');
console.log('---------------------------');
console.log('Usage:');
console.log('var options = {');
console.log('  customCardTypes: [');
console.log('    {');
console.log('      name: \'CustomCard\',');
console.log('      pattern: \'^123\',');
console.log('      valid_length: [16]');
console.log('    },');
console.log('    // Add more custom card types as needed');
console.log('  ],');
console.log('  useJQuery: true');
console.log('};');
console.log('');
console.log('var creditCardValidator = new CreditCardValidator(options);');
console.log('var creditCardNumber = \'4111-1111-1111-1111\';');
console.log('var expirationDate = \'12/25\';');
console.log('var cardholderName = \'John Doe\';');
console.log('');
console.log('creditCardValidator.validateCreditCard(creditCardNumber, expirationDate, cardholderName, function (error, result) {');
console.log('  if (error) {');
console.log('    console.error(\'Validation failed:\', error.message);');
console.log('  } else {');
console.log('    console.log(\'Validation result:\', result);');
console.log('  }');
console.log('});');