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/**
 * Copyright 2019 Pramati Prism, Inc.
 *
 * 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.
 */
package io.hyscale.controller.validator.impl;

import java.util.ArrayList;
import java.util.List;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

import io.hyscale.commons.constants.ToolConstants;
import io.hyscale.commons.exception.HyscaleException;
import io.hyscale.commons.validator.Validator;
import io.hyscale.controller.model.WorkflowContext;
import io.hyscale.controller.util.ValidatorMessageHandler;

/**
 * Aggregator class to call post validators
 * such as cluster validator, volume validator among others
 *
 * @author tushar
 */
@Component
public class InputSpecPostValidator implements Validator> {

    private static final Logger logger = LoggerFactory.getLogger(InputSpecPostValidator.class);

    private List> validators = new ArrayList>();

    public void addValidator(Validator validator) {
        if (validator != null) {
            validators.add(validator);
        }
    }

    /**
     * For each context calls all the available validators
     */
    @Override
    public boolean validate(List contextList) throws HyscaleException {
        if (validators.isEmpty()) {
            return true;
        }
        boolean isInvalid = false;
        boolean isFailed = false;
        StringBuilder exceptionMsgBuilder = new StringBuilder().append(": \n");
        for (Validator validator : validators) {
            logger.debug("Running validator: {}", validator.getClass());
            for (WorkflowContext context : contextList) {
                try {
                    isInvalid = validator.validate(context) ? isInvalid : true;
                } catch (HyscaleException e) {
                    isFailed = true;
                    exceptionMsgBuilder.append(e.getMessage()).append(ToolConstants.NEW_LINE);
                }
            }
            ValidatorMessageHandler.handleErrMsg(exceptionMsgBuilder, isInvalid, isFailed);
            if (isInvalid) {
                return !isInvalid;
            }
        }
        return !isInvalid;
    }

}