/*
 * 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.apache.maven.surefire.booter;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.maven.surefire.api.util.TempFileManager;

/**
 * @author Kristian Rosenvold
 */
public class SystemPropertyManager {

    /**
     * Loads the properties, closes the stream
     *
     * @param inStream The stream to read from, will be closed
     * @return The properties
     * @throws java.io.IOException If something bad happens
     */
    public static PropertiesWrapper loadProperties(InputStream inStream) throws IOException {
        try (InputStream stream = inStream) {
            Properties p = new Properties();
            p.load(stream);
            Map<String, String> map = new ConcurrentHashMap<>(p.size());
            for (String key : p.stringPropertyNames()) {
                map.put(key, p.getProperty(key));
            }
            return new PropertiesWrapper(map);
        }
    }

    private static PropertiesWrapper loadProperties(File file) throws IOException {
        return loadProperties(new FileInputStream(file));
    }

    public static void setSystemProperties(File file) throws IOException {
        PropertiesWrapper p = loadProperties(file);
        p.setAsSystemProperties();
    }

    public static File writePropertiesFile(
            Properties properties, File tempDirectory, String name, boolean keepForkFiles) throws IOException {
        File file = TempFileManager.instance(tempDirectory).createTempFile(name, "tmp");
        if (!keepForkFiles) {
            file.deleteOnExit();
        }

        writePropertiesFile(file, name, properties);

        return file;
    }

    public static void writePropertiesFile(File file, String name, Properties properties) throws IOException {
        try (FileOutputStream out = new FileOutputStream(file)) {
            properties.store(out, name);
        }
    }
}
