export interface LoginFormData {
  email: string;
  password: string;
}

export interface LoginValidationErrors {
  email?: string;
  password?: string;
}

/**
 * LoginCommandModel
 *
 * Encapsulates login form state, client-side validation, and
 * prepares data for submission to the AuthService.
 */
export class LoginCommandModel {
  private _email: string;
  private _password: string;

  constructor(initial: LoginFormData = { email: '', password: '' }) {
    this._email = initial.email;
    this._password = initial.password;
  }

  get email(): string {
    return this._email;
  }

  set email(value: string) {
    this._email = value;
  }

  get password(): string {
    return this._password;
  }

  set password(value: string) {
    this._password = value;
  }

  /** Basic client-side validation for login form */
  validate(): LoginValidationErrors {
    const errors: LoginValidationErrors = {};

    if (!this._email.trim()) {
      errors.email = 'Email is required';
    } else if (!/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(this._email)) {
      errors.email = 'Invalid email format';
    }

    if (!this._password) {
      errors.password = 'Password is required';
    }

    return errors;
  }

  /** Convert to API LoginParams DTO */
  toRequestDto(): { email: string; password: string } {
    return {
      email: this._email,
      password: this._password,
    };
  }
}