/*-
 * ============LICENSE_START=======================================================
 * SDC
 * ================================================================================
 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
 * ================================================================================
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ============LICENSE_END=========================================================
 */

package org.openecomp.sdc.be.model.tosca.constraints;

import java.util.List;
import java.util.Map;

import org.openecomp.sdc.be.model.tosca.ToscaType;
import org.openecomp.sdc.be.model.tosca.constraints.exception.ConstraintFunctionalException;
import org.openecomp.sdc.be.model.tosca.constraints.exception.ConstraintViolationException;

import javax.validation.constraints.NotNull;

public class MinLengthConstraint extends AbstractPropertyConstraint {

    @NotNull
    private Integer minLength;

    public MinLengthConstraint(Integer minLength) {
        this.minLength = minLength;
    }

    public MinLengthConstraint() {
        super();
    }

    protected void doValidate(Object propertyValue) throws ConstraintViolationException {
        if (propertyValue instanceof String && String.valueOf(propertyValue).length() < minLength) {
            throw new ConstraintViolationException("The length of the value is less than [" + minLength + "]");
        } else if (propertyValue instanceof List && ((List) propertyValue).size()  < minLength) {
            throw new ConstraintViolationException("The size of the list is less than [" + minLength + "]");
        } else if (propertyValue instanceof Map && ((Map) propertyValue).size()  < minLength) {
            throw new ConstraintViolationException("The size of the map is less than [" + minLength + "]");
        }
    }

    public Integer getMinLength() {
        return minLength;
    }

    public void setMinLength(Integer minLength) {
        this.minLength = minLength;
    }

    @Override
    public void validate(Object propertyValue) throws ConstraintViolationException {
        if (propertyValue == null) {
            throw new ConstraintViolationException("Value to validate is null");
        }
        if(!(propertyValue instanceof String || propertyValue instanceof List || propertyValue instanceof Map)) {
            throw new ConstraintViolationException("This constraint can only be applied on String/List/Map value");
        }
        doValidate(propertyValue);
    }

    @Override
    public String getErrorMessage(ToscaType toscaType, ConstraintFunctionalException e, String propertyName) {
        return getErrorMessage(toscaType, e, propertyName, "%s minimum length must be [%s]", String.valueOf(minLength));
    }
}