Codecademy export

main.js

// All valid credit card numbers
const valid1 = [4, 5, 3, 9, 6, 7, 7, 9, 0, 8, 0, 1, 6, 8, 0, 8];
const valid2 = [5, 5, 3, 5, 7, 6, 6, 7, 6, 8, 7, 5, 1, 4, 3, 9];
const valid3 = [3, 7, 1, 6, 1, 2, 0, 1, 9, 9, 8, 5, 2, 3, 6];
const valid4 = [6, 0, 1, 1, 1, 4, 4, 3, 4, 0, 6, 8, 2, 9, 0, 5];
const valid5 = [4, 5, 3, 9, 4, 0, 4, 9, 6, 7, 8, 6, 9, 6, 6, 6];

// All invalid credit card numbers
const invalid1 = [4, 5, 3, 2, 7, 7, 8, 7, 7, 1, 0, 9, 1, 7, 9, 5];
const invalid2 = [5, 7, 9, 5, 5, 9, 3, 3, 9, 2, 1, 3, 4, 6, 4, 3];
const invalid3 = [3, 7, 5, 7, 9, 6, 0, 8, 4, 4, 5, 9, 9, 1, 4];
const invalid4 = [6, 0, 1, 1, 1, 2, 7, 9, 6, 1, 7, 7, 7, 9, 3, 5];
const invalid5 = [5, 3, 8, 2, 0, 1, 9, 7, 7, 2, 8, 8, 3, 8, 5, 4];

// Can be either valid or invalid
const mystery1 = [3, 4, 4, 8, 0, 1, 9, 6, 8, 3, 0, 5, 4, 1, 4];
const mystery2 = [5, 4, 6, 6, 1, 0, 0, 8, 6, 1, 6, 2, 0, 2, 3, 9];
const mystery3 = [6, 0, 1, 1, 3, 7, 7, 0, 2, 0, 9, 6, 2, 6, 5, 6, 2, 0, 3];
const mystery4 = [4, 9, 2, 9, 8, 7, 7, 1, 6, 9, 2, 1, 7, 0, 9, 3];
const mystery5 = [4, 9, 1, 3, 5, 4, 0, 4, 6, 3, 0, 7, 2, 5, 2, 3];

// An array of all the arrays above
const batch = [valid1, valid2, valid3, valid4, valid5, invalid1, invalid2, invalid3, invalid4, invalid5, mystery1, mystery2, mystery3, mystery4, mystery5];


// Add your functions below:
const validateCred = arr =>{
  if (arr.length%2 === 0){
  const _arr = arr
  .map((v,i)=>{
    while (i<arr.length && (i%2) == 0){
      return v*2>9?v*2-9:v*2;
    }
    return v
  })
  .reduce((acc,val)=>acc+val)%10;
  return _arr ===0?'Valid':'Not Valid';}
  else {
    const _arr = arr
  .map((v,i)=>{
    while (i<arr.length && (i%2) == 1){
      return v*2>9?v*2-9:v*2;
    }
    return v
  })
  .reduce((acc,val)=>acc+val)%10;
  return _arr ===0?'Valid':'Not Valid';};
  };


const idInvalidCardCompanies = arr =>{
 const _arr = arr.map(v=>{
   switch (v[0]){
     default:
      return 'Company not Found';
      break;
     case 3:
      return 'Amex';
      break;
     case 4:
      return 'Visa';
      break;
     case 5:
      return 'Mastercard';
      break;
     case 6:
      return 'Discover';
      break;
   };
 }).filter((value,index,arr)=>{
   return (arr.indexOf(value) === index) || (value=='Company not Found')
 });
  return _arr;
};

const cardReader = stringCard =>{  
  _arr = stringCard.split('').map(x=>parseInt(x));
  return _arr
};

const cardValidCreator = arr =>{
   let _arr =[]
   if (arr.length%2 === 0){
   _arr = arr
  .map((v,i)=>{
    while (i<arr.length && (i%2) == 0){
      return v*2>9?v*2-9:v*2;
    }
    return v
  })
  .reduce((acc,val)=>acc+val)%10;}
  else {
    _arr = arr
  .map((v,i)=>{
    while (i<arr.length && (i%2) == 1){
      return v*2>9?v*2-9:v*2;
    }
    return v
  })
  .reduce((acc,val)=>acc+val)%10;
  };
  let fix = _arr>5?10-_arr:-_arr
  let index = 0
  if (arr.length%2===0){
  do {
     index = Math.floor(Math.random() * arr.length);
  }
  while (index%2===0){
    let _temp = arr[index] + fix >= 0?arr[index]+fix:arr[index]-fix;
    console.log(`Fixed Index ${index} from ${arr[index]} to ${_temp}`)
    arr[index]=_temp;
    return arr;
  };
  return arr;
} else {
  do {
     index = Math.floor(Math.random() * arr.length);
  }
  while (index%2===1){
    let _temp = arr[index] + fix >= 0?arr[index]+fix:arr[index]-fix;
    console.log(`Fixed Index ${index} from ${arr[index]} to ${_temp}`)
    arr[index]=_temp;
    return arr;
  };
  return arr;
};};

let card = cardReader('375566524701664');
console.log(card.join(''))
console.log(validateCred(card));
console.log(idInvalidCardCompanies([card]));
let newCard = cardValidCreator(card)
console.log(newCard);
console.log(`New Valid Card: ${newCard.join('')}`)
console.log(validateCred(newCard));