/**
 * login-user.dto.ts
 * DTO para iniciar sesión.
 * Define qué datos esperamos al hacer login.
 */

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

export class LoginUserDtoValidator {
  static validate(data: unknown): LoginUserDto {
    if (typeof data !== "object" || data === null) {
      throw new Error("Invalid data");
    }

    const obj = data as Record<string, unknown>;

    if (typeof obj.email !== "string" || !this.isValidEmail(obj.email)) {
      throw new Error("Email is required and must be valid");
    }

    if (typeof obj.password !== "string" || obj.password.length === 0) {
      throw new Error("Password is required");
    }

    return {
      email: obj.email.trim().toLowerCase(),
      password: obj.password,
    };
  }

  private static isValidEmail(email: string): boolean {
    const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
    return emailRegex.test(email);
  }
}