/*-
 * ============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 org.openecomp.sdc.be.model.tosca.ToscaType;
import org.openecomp.sdc.be.model.tosca.constraints.exception.ConstraintValueDoNotMatchPropertyTypeException;
import org.openecomp.sdc.be.model.tosca.constraints.exception.ConstraintViolationException;

@SuppressWarnings("rawtypes")
public abstract class AbstractComparablePropertyConstraint extends AbstractPropertyConstraint {

    private Comparable comparable;

    protected Comparable getComparable() {
        return comparable;
    }

    protected void initialize(String rawTextValue, ToscaType propertyType) throws ConstraintValueDoNotMatchPropertyTypeException {
        // Perform verification that the property type is supported for comparison
        ConstraintUtil.checkComparableType(propertyType);
        // Check if the text value is valid for the property type
        if (propertyType.isValidValue(rawTextValue)) {
            // Convert the raw text value to a comparable value
            comparable = ConstraintUtil.convertToComparable(propertyType, rawTextValue);
        } else {
            // Invalid value throw exception
            throw new ConstraintValueDoNotMatchPropertyTypeException(
                "The value [" + rawTextValue + "] is not valid for the type [" + propertyType + "]."
                    + (propertyType.isScalarUnit() ? " Valid values are " + propertyType.getValidValues() : ""));
        }
    }

    protected abstract void doValidate(Object propertyValue) throws ConstraintViolationException;

    public abstract boolean validateValueType(String propertyType) throws ConstraintValueDoNotMatchPropertyTypeException;

    public abstract void changeConstraintValueTypeTo(String propertyType) throws ConstraintValueDoNotMatchPropertyTypeException;

    @Override
    public void validate(Object propertyValue) throws ConstraintViolationException {
        if (propertyValue == null) {
            throw new ConstraintViolationException("Value to check is null");
        }
        if (!(comparable.getClass().isAssignableFrom(propertyValue.getClass()))) {
            throw new ConstraintViolationException(
                "Value to check is not comparable to reference type, value type [" + propertyValue.getClass() + "], reference type [" + comparable
                    .getClass() + "]");
        }
        doValidate(propertyValue);
    }
}