Encapsulation

class BankAccount {
  // Private - محمي ومش ظاهر
  private _balance: number;

  constructor(initialBalance: number) {
    this._balance = initialBalance;
  }

  // Getter - للقراءة بس
  get balance(): number {
    return this._balance;
  }

  // Setter - للتعديل مع validation
  set balance(value: number) {
    if (value < 0) {
      throw new Error("الرصيد مينفعش يكون سالب!");
    }
    this._balance = value;
  }

  // Safe deposit method
  deposit(amount: number): void {
    if (amount > 0) {
      this._balance += amount;
    }
  }

  // Safe withdraw method
  withdraw(amount: number): boolean {
    if (amount > 0 && amount <= this._balance) {
      this._balance -= amount;
      return true;
    }
    return false;
  }
}