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/*
 * Copyright 2019 Nokia
 * <p>
 * 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
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * 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.onap.cvc.csar.parser;


import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class ManifestFileSplitter {

    public ManifestFileModel split(File manifestFile) {
        String fileName = manifestFile.getAbsolutePath();
        List<String> data = new ArrayList<>();
        List<String> cms = new ArrayList<>();

        try (Stream<String> stream = Files.lines(Paths.get(fileName))) {
            List<String> lines = stream.collect(Collectors.toList());
            return createManifestFileModel(data, cms, lines);

        } catch (IOException e) {
            throw new IllegalArgumentException(String.format("Unable to process manifest file! Wrong file path: '%s'", fileName));
        }
    }

    private ManifestFileModel createManifestFileModel(List<String> data, List<String> cms, List<String> lines) {
        boolean isCmsSection = false;

        for (String line : lines) {
            if (line.contains("BEGIN CMS")) {
                isCmsSection = true;
            }

            if (isCmsSection) {
                cms.add(line);
            } else {
                data.add(line);
            }
        }
        return new ManifestFileModel(data, cms);
    }
}