03. Bank Exam May 2020

class Bank {
  constructor(bankName) {
    this._bankName = bankName;
    this.allCustomers = [];
  }

  newCustomer(customer) {
    if (this.allCustomers.find(((c) => c.firstName === customer.firstName)
  && ((c) => c.lastName === customer.lastName)
  && ((c) => c.personalId === customer.personalId))) {
      throw new Error(`${customer.firstName} ${customer.lastName} is already our customer!`);
    } else {
      this.allCustomers.push(customer);
      return customer;
    }
  }

  depositMoney(personalId, amount) {
    if (!this.allCustomers.find((c) => c.personalId === personalId)) {
      throw new Error('We have no customer with this ID!');
    } else {
      const customer = this.allCustomers.find((c) => c.personalId === personalId);
      if (customer.hasOwnProperty('totalMoney')) {
        customer.totalMoney += amount;
      } else {
        customer.totalMoney = 0;
        customer.totalMoney += amount;
      }
      if (customer.hasOwnProperty('transactions')) {
        customer.transactions.count++;
        customer.transactions.push(`${customer.transactions.count}. ${customer.firstName} ${customer.lastName} made deposit of ${amount}$!`);
      } else {
        customer.transactions = [];
        customer.transactions.count = 1;
        customer.transactions.push(`${customer.transactions.count}. ${customer.firstName} ${customer.lastName} made deposit of ${amount}$!`);
      }
      return `${customer.totalMoney}$`;
    }
  }

  withdrawMoney(personalId, amount) {
    if (!this.allCustomers.find((c) => c.personalId === personalId)) {
      throw new Error('We have no customer with this ID!');
    } else {
      const customer = this.allCustomers.find((c) => c.personalId === personalId);
      if (!customer.totalMoney || customer.totalMoney < amount) {
        throw new Error(`${customer.firstName} ${customer.lastName} does not have enough money to withdraw that amount!`);
      } else {
        customer.totalMoney -= amount;
        if (customer.hasOwnProperty('transactions')) {
          customer.transactions.count++;
          customer.transactions.push(`${customer.transactions.count}. ${customer.firstName} ${customer.lastName} withdrew ${amount}$!`);
        } else {
          customer.transactions = [];
          customer.transactions.count = 1;
          customer.transactions.push(`${customer.transactions.count}. ${customer.firstName} ${customer.lastName} withdrew ${amount}$!`);
        }
        return `${customer.totalMoney}$`;
      }
    }
  }

  customerInfo(personalId) {
    if (!this.allCustomers.find((c) => c.personalId === personalId)) {
      throw new Error('We have no customer with this ID!');
    } else {
      const customer = this.allCustomers.find((c) => c.personalId === personalId);
      return `${`Bank name: ${this._bankName}` + '\n'
  + `Customer name: ${customer.firstName} ${customer.lastName}` + '\n'
  + `Customer ID: ${customer.personalId}` + '\n'
  + `Total Money: ${customer.totalMoney}$` + '\n'
  + 'Transactions:' + '\n'}${
        `${customer.transactions.reverse().join('\n')}`.trim()}`;
    }
  }
}