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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.jbpm.compiler.canonical;

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

import org.drools.util.StringUtils;

public class NodeValidator {

    public static NodeValidator of(String nodeType, String nodeId) {
        return new NodeValidator(nodeType, nodeId);
    }

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

    private NodeValidator(String nodeType, String nodeId) {
        this.nodeType = nodeType;
        this.nodeId = nodeId;
    }

    public NodeValidator notEmpty(String name, String value) {
        if (StringUtils.isEmpty(value)) {
            this.errors.add(MessageFormat.format("{0} should not be empty", name));
        }
        return this;
    }

    public void validate() {
        if (!errors.isEmpty()) {
            throw new IllegalArgumentException(
                    MessageFormat.format("Invalid parameters for {0} \"{1}\": {2}",
                            nodeType,
                            nodeId,
                            String.join(", ", errors)));
        }
    }
}