package net.gepafin.tendermanagement.util;

import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;

import net.gepafin.tendermanagement.config.Translator;
import net.gepafin.tendermanagement.constants.GepafinConstant;
import net.gepafin.tendermanagement.web.rest.api.errors.Status;
import net.gepafin.tendermanagement.web.rest.api.errors.ValidationException;

public class FieldValidator {

	private final List<String> errors = new ArrayList<>();

	public static FieldValidator create() {
		return new FieldValidator();
	}

	public FieldValidator notNull(Object object, String fieldName) {
		if (Objects.isNull(object)) {
			errors.add(MessageFormat.format(Translator.toLocale(GepafinConstant.FIELD_NOT_NULL), fieldName));
		}
		return this;
	}

	public FieldValidator notEmpty(List<?> list, String fieldName) {
		if (list == null || list.isEmpty()) {
			errors.add(MessageFormat.format(Translator.toLocale(GepafinConstant.FIELD_NOT_EMPTY), fieldName));
		}
		return this;
	}

	public void validate() {
		if (!errors.isEmpty()) {
			throw new ValidationException(Status.VALIDATION_ERROR, errors);
		}
	}

	public FieldValidator addError( String errorMessage) {
		errors.add(errorMessage);
		return this;
	}
}