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

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

  depositMoney(personalId, amount) {
    let checkId = this.allCustomers.find(x => x.personalId === personalId);
    if (!checkId.hasOwnProperty("totalMoney")) {
      checkId.totalMoney = 0;
    }
    if (!checkId.hasOwnProperty("transaction")) {
      checkId.transaction = [];
    }
    if (!checkId) {
      throw new Error(`We have no customer with this ID!`);
    } else {
      checkId.totalMoney = checkId.totalMoney + amount;
      let currTransaction = `${checkId.firstName} ${checkId.lastName} made deposit of ${amount}$`;
      checkId.transaction.push(currTransaction);
    }
    return `${checkId.totalMoney}$`;
  }

  withdrawMoney(personalId, amount) {
    let checkId = this.allCustomers.find(x => x.personalId === personalId);
    if (!checkId.hasOwnProperty("totalMoney")) {
      checkId.totalMoney = 0;
    }
    if (!checkId.hasOwnProperty("transaction")) {
      checkId.transaction = [];
    }
    if (!checkId) {
      throw new Error(`We have no customer with this ID!`);
    }
    if (checkId.totalMoney < amount) {
      throw new Error(
        `${checkId.firstName} ${checkId.lastName} does not have enough money to withdraw that amount!`
      );
    } else {
      checkId.totalMoney = checkId.totalMoney - amount;
      let currTransaction = `${checkId.firstName} ${checkId.lastName} withdrew ${amount}$`;
      checkId.transaction.push(currTransaction);
    }
    return `${checkId.totalMoney}$`;
  }
  customerInfo(personalId) {
    let checkId = this.allCustomers.find(x => x.personalId === personalId);
    let result = checkId.transaction;
    if (!checkId) {
      throw new Error(`We have no customer with this ID!`);
    } else {
      return `
        Bank name: ${this._bankName}
        Customer name: ${checkId.firstName} ${checkId.lastName}
        Customer ID: ${checkId.personalId}
        Total Money: ${checkId.totalMoney}$
        Transactions: \n${result
          .map((e, i) => (result = `${i + 1}. ${e}!`))
          .reverse()
          .join("\n")}
        `;
    }
  }
}