/*
 * Zed Attack Proxy (ZAP) and its related class files.
 *
 * ZAP is an HTTP/HTTPS proxy for assessing web application security.
 *
 * Copyright 2019 The ZAP Development Team
 *
 * 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 org.zaproxy.zap.extension.custompayloads;

import java.util.Iterator;
import java.util.List;

public class PayloadIterator implements Iterable<String> {

    private final PayloadCategory category;

    public PayloadIterator(PayloadCategory category) {
        this.category = category;
    }

    @Override
    public Iterator<String> iterator() {
        return new IteratorImpl(category.getPayloads());
    }

    private static class IteratorImpl implements Iterator<String> {

        private final Iterator<CustomPayload> iterator;
        private CustomPayload currentPayload;

        public IteratorImpl(List<CustomPayload> payloads) {
            this.iterator = payloads.iterator();
        }

        @Override
        public boolean hasNext() {
            while (iterator.hasNext()) {
                currentPayload = iterator.next();
                if (currentPayload.isEnabled()) {
                    return true;
                }
            }
            return false;
        }

        @Override
        public String next() {
            return currentPayload.getPayload();
        }
    }
}
