/*******************************************************************************
 * Copyright 2016-2017 ZTE, Inc. and others.
 * 
 * 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.onap.msb.apiroute.wrapper.util;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;

public final class FileUtil {

    /**
     * Read all the files under a folder
     */
    public static File[] readFileFolder(String filepath) throws FileNotFoundException, IOException {
        File file = new File(filepath);
        if (file.isDirectory()) {
            File[] filelist = file.listFiles();
            return filelist;
        }

        return null;
    }

    public static String readFile(String Path) throws IOException {
        BufferedReader reader = null;
        StringBuffer fileContent = new StringBuffer();
        try {
            FileInputStream fileInputStream = new FileInputStream(Path);
            InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream, "UTF-8");
            reader = new BufferedReader(inputStreamReader);
            String tempString = null;
            while ((tempString = reader.readLine()) != null) {
                fileContent.append(tempString);
            }
            reader.close();
        } catch (IOException e) {
            throw e;
        } finally {
            if (reader != null) {
                try {
                    reader.close();
                } catch (IOException e) {
                    throw e;
                }
            }
        }
        return fileContent.toString();
    }

    /**
     * Read all the files under a folder
     */
    public static String[] readfile(String filepath) throws FileNotFoundException, IOException {
        File file = new File(filepath);
        if (file.isDirectory()) {
            String[] filelist = file.list();
            return filelist;
        }
        return null;
    }
}