import type { IVariable, IVariableError } from '../inputs/variableInput.service';
import type { IVariableValidator } from './variableValidator.service';
import { VariableValidatorService } from './variableValidator.service';

class NumberValidator implements IVariableValidator {
  public handles(type: string) {
    return ['int', 'float'].includes(type);
  }

  public validate(variable: IVariable, errors: IVariableError[]): void {
    if (!variable.value) {
      errors.push({ message: 'Field is required.' });
    }

    if (variable.type === 'int' && typeof variable.value === 'string' && variable.value.split('.').length > 1) {
      errors.push({ message: 'Must be an integer.' });
    }
  }
}

VariableValidatorService.addValidator(new NumberValidator());