script.js

'use strict';

/////////////////////////////////////////////////
/////////////////////////////////////////////////
// BANKIST APP

/////////////////////////////////////////////////
// Data

// DIFFERENT DATA! Contains movement dates, currency and locale

const account1 = {
  owner: 'ELHARCHAOUI SIFEDDINE',
  movements: [200, 455.23, -306.5, 25000, -642.21, -133.9, 79.97, 1300],
  interestRate: 1.2, // %
  pin: 1111,

  movementsDates: [
    '2019-11-18T21:31:17.178Z',
    '2019-12-23T07:42:02.383Z',
    '2024-01-28T09:15:04.904Z',
    '2024-04-01T10:17:24.185Z',
    '2024-05-08T14:11:59.604Z',
    '2024-07-26T17:01:17.194Z',
    '2024-07-28T23:36:17.929Z',
    '2024-08-01T10:51:36.790Z',
  ],
  currency: 'EUR',
  locale: 'pt-PT',
};

const account2 = {
  owner: 'YAKOT ESS',
  movements: [5000, 3400, -150, -790, -3210, -1000, 8500, -30],
  interestRate: 1.5,
  pin: 2222,

  movementsDates: [
    '2023-11-11T13:15:33.035Z',
    '2023-12-15T09:48:16.867Z',
    '2023-12-21T06:04:23.907Z',
    '2024-01-25T14:18:46.235Z',
    '2024-02-05T16:33:06.386Z',
    '2024-04-10T14:43:26.374Z',
    '2024-06-25T18:49:59.371Z',
    '2024-07-26T12:01:20.894Z',
  ],
  currency: 'USD',
  locale: 'en-US',
};

const account3 = {
  owner: 'SAED BEL',
  movements: [5000, 3400, -150, -790, -3210, -1000, 8500, -30],
  interestRate: 1.5,
  pin: 3333,

  movementsDates: [
    '2023-11-11T13:15:33.035Z',
    '2023-12-15T09:48:16.867Z',
    '2023-12-21T06:04:23.907Z',
    '2024-01-25T14:18:46.235Z',
    '2024-02-05T16:33:06.386Z',
    '2024-04-10T14:43:26.374Z',
    '2024-06-25T18:49:59.371Z',
    '2024-07-26T12:01:20.894Z',
  ],
  currency: 'USD',
  locale: 'en-US',
};

const account4 = {
  owner: 'OUTRID DEN',
  movements: [5000, 3400, -150, -790, -3210, -1000, 8500, -30],
  interestRate: 1.5,
  pin: 4444,

  movementsDates: [
    '2023-11-11T13:15:33.035Z',
    '2023-12-15T09:48:16.867Z',
    '2023-12-21T06:04:23.907Z',
    '2024-01-25T14:18:46.235Z',
    '2024-02-05T16:33:06.386Z',
    '2024-04-10T14:43:26.374Z',
    '2024-06-25T18:49:59.371Z',
    '2024-07-26T12:01:20.894Z',
  ],
  currency: 'USD',
  locale: 'en-US',
};

const accounts = [account1, account2, account3, account4];

/////////////////////////////////////////////////
// Elements
const labelWelcome = document.querySelector('.welcome');
const labelDate = document.querySelector('.date');
const labelBalance = document.querySelector('.balance__value');
const labelSumIn = document.querySelector('.summary__value--in');
const labelSumOut = document.querySelector('.summary__value--out');
const labelSumInterest = document.querySelector('.summary__value--interest');
const labelTimer = document.querySelector('.timer');

const containerApp = document.querySelector('.app');
const containerMovements = document.querySelector('.movements');

const btnLogin = document.querySelector('.login__btn');
const btnTransfer = document.querySelector('.form__btn--transfer');
const btnLoan = document.querySelector('.form__btn--loan');
const btnClose = document.querySelector('.form__btn--close');
const btnSort = document.querySelector('.btn--sort');

const inputLoginUsername = document.querySelector('.login__input--user');
const inputLoginPin = document.querySelector('.login__input--pin');
const inputTransferTo = document.querySelector('.form__input--to');
const inputTransferAmount = document.querySelector('.form__input--amount');
const inputLoanAmount = document.querySelector('.form__input--loan-amount');
const inputCloseUsername = document.querySelector('.form__input--user');
const inputClosePin = document.querySelector('.form__input--pin');

/////////////////////////////////////////////////
// Functions

const formatMovementDate = function (date, locale) {
  const calcDaysPassed = (date1, date2) =>
    Math.round(Math.abs(date2 - date1) / (1000 * 60 * 60 * 24));

  const daysPassed = calcDaysPassed(new Date(), date);

  if (daysPassed === 0) return "Aujourd'hui";
  if (daysPassed === 1) return 'Hier';
  if (daysPassed <= 7) return `${daysPassed} jours auparavant`;

  return new Intl.DateTimeFormat(locale).format(date);
};

const formatCur = function (value, locale, currency) {
  return new Intl.NumberFormat(locale, {
    style: 'currency',
    currency: currency,
  }).format(value);
};

const displayMovements = function (acc, sort = false) {
  containerMovements.innerHTML = '';

  const movs = sort
    ? acc.movements.slice().sort((a, b) => a - b)
    : acc.movements;

  movs.forEach(function (mov, i) {
    const type = mov > 0 ? 'dépôt' : 'retrait';

    const date = new Date(acc.movementsDates[i]);
    const displayDate = formatMovementDate(date, acc.locale);

    const formattedMov = formatCur(mov, acc.locale, acc.currency);

    const html = `
      <div class="movements__row">
        <div class="movements__type movements__type--${type}">${
      i + 1
    } ${type}</div>
        <div class="movements__date">${displayDate}</div>
        <div class="movements__value">${formattedMov}</div>
      </div>
    `;

    containerMovements.insertAdjacentHTML('afterbegin', html);
  });
};

const calcDisplayBalance = function (acc) {
  acc.balance = acc.movements.reduce((acc, mov) => acc + mov, 0);
  labelBalance.textContent = formatCur(acc.balance, acc.locale, acc.currency);
};

const calcDisplaySummary = function (acc) {
  const incomes = acc.movements
    .filter(mov => mov > 0)
    .reduce((acc, mov) => acc + mov, 0);
  labelSumIn.textContent = formatCur(incomes, acc.locale, acc.currency);

  const out = acc.movements
    .filter(mov => mov < 0)
    .reduce((acc, mov) => acc + mov, 0);
  labelSumOut.textContent = formatCur(Math.abs(out), acc.locale, acc.currency);

  const interest = acc.movements
    .filter(mov => mov > 0)
    .map(dépôt => (dépôt * acc.interestRate) / 100)
    .filter((int, i, arr) => int >= 1)
    .reduce((acc, int) => acc + int, 0);
  labelSumInterest.textContent = formatCur(interest, acc.locale, acc.currency);
};

const createUsernames = function (accs) {
  accs.forEach(function (acc) {
    acc.username = acc.owner
      .toLowerCase()
      .split(' ')
      .map(name => name[0])
      .join('');
  });
};
createUsernames(accounts);

const updateUI = function (acc) {
  displayMovements(acc);
  calcDisplayBalance(acc);
  calcDisplaySummary(acc);
};

const startLogOutTimer = function () {
  const tick = function () {
    const min = String(Math.trunc(time / 60)).padStart(2, 0);
    const sec = String(time % 60).padStart(2, 0);

    labelTimer.textContent = `${min}:${sec}`;

    if (time === 0) {
      clearInterval(timer);
      labelWelcome.textContent = 'Connectez-vous pour commencer';
      containerApp.style.opacity = 0;
    }

    time--;
  };

  let time = 300;
  tick();
  const timer = setInterval(tick, 1000);

  return timer;
};

///////////////////////////////////////
// Event handlers
let currentAccount, timer;

btnLogin.addEventListener('click', function (e) {
  e.preventDefault();

  currentAccount = accounts.find(
    acc => acc.username === inputLoginUsername.value
  );

  if (currentAccount?.pin === +inputLoginPin.value) {
    labelWelcome.textContent = `Bienvenue, ${
      currentAccount.owner.split(' ')[0]
    }`;
    containerApp.style.opacity = 100;

    const now = new Date();
    const options = {
      hour: 'numeric',
      minute: 'numeric',
      day: 'numeric',
      month: 'numeric',
      year: 'numeric',
    };

    labelDate.textContent = new Intl.DateTimeFormat(
      currentAccount.locale,
      options
    ).format(now);

    inputLoginUsername.value = inputLoginPin.value = '';
    inputLoginPin.blur();

    if (timer) clearInterval(timer);
    timer = startLogOutTimer();

    updateUI(currentAccount);
  }
});

btnTransfer.addEventListener('click', function (e) {
  e.preventDefault();
  const amount = +inputTransferAmount.value;
  const receiverAcc = accounts.find(
    acc => acc.username === inputTransferTo.value
  );
  inputTransferAmount.value = inputTransferTo.value = '';

  if (
    amount > 0 &&
    receiverAcc &&
    currentAccount.balance >= amount &&
    receiverAcc?.username !== currentAccount.username
  ) {
    currentAccount.movements.push(-amount);
    receiverAcc.movements.push(amount);

    currentAccount.movementsDates.push(new Date().toISOString());
    receiverAcc.movementsDates.push(new Date().toISOString());

    updateUI(currentAccount);

    clearInterval(timer);
    timer = startLogOutTimer();
  }
});
btnLoan.addEventListener('click', function (e) {
  e.preventDefault();
  const amount = Math.floor(inputLoanAmount.value);

  if (amount > 0 && currentAccount.movements.some(mov => mov >= amount * 0.1)) {
    // Add movement for loan
    setTimeout(function () {
      currentAccount.movements.push(amount);
      currentAccount.movementsDates.push(new Date().toISOString());

      // Update UI
      updateUI(currentAccount);

      // Reset timer
      if (timer) clearInterval(timer);
      timer = startLogOutTimer();
    }, 2500); // Wait 2.5 seconds before adding loan
  }
  inputLoanAmount.value = '';
});

btnClose.addEventListener('click', function (e) {
  e.preventDefault();

  if (
    inputCloseUsername.value === currentAccount.username &&
    +inputClosePin.value === currentAccount.pin
  ) {
    // Find index of current account and delete it
    const index = accounts.findIndex(
      acc => acc.username === currentAccount.username
    );
    accounts.splice(index, 1);

    // Hide UI
    containerApp.style.opacity = 0;
    labelWelcome.textContent = 'Connectez-vous pour commencer';
  }
  inputCloseUsername.value = inputClosePin.value = '';
});

btnSort.addEventListener('click', function (e) {
  e.preventDefault();
  displayMovements(currentAccount, !sorted);
  sorted = !sorted;
});