package com.zeekling.solo.wechat.util;

import org.apache.commons.lang3.text.StrBuilder;
import org.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.*;

/**
 * @author zeekling [lingzhaohui@zeekling.cn]
 * @version 1.0
 * @apiNote 主要用来操作文件相关
 * @since 2020-03-21
 */
public final class FileUtils {


    private static final Logger LOG = LoggerFactory.getLogger(FileUtils.class);

    private FileUtils() {
    }

    /**
     * 读取文件
     *
     * @param filePath 文件地址
     * @return 文件内容
     */
    @SuppressWarnings("resource")
	public static String readFile(String filePath) {
        StrBuilder sb = new StrBuilder();
        byte[] buffer = new byte[1024];
        try {
            FileInputStream inputStream = new FileInputStream(filePath);
            BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream);
            int idx = -1;
            while ((idx = bufferedInputStream.read(buffer)) != -1) {
                sb.append(new String(buffer, 0, idx));
            }
        } catch (IOException e) {
            LOG.warn("file read error,fileName:{}, error:{}", filePath, e);
        }
        return sb.toString();
    }

    /**
     * 读取文件，并且将文件转换成json对象
     *
     * @param filePath 文件路径
     * @return 转换后的json对象
     */
    public static JSONObject readJsonFile(String filePath) {
        String str = readFile(filePath);

        try {
            return new JSONObject(str);
        } catch (Exception e) {
            LOG.warn("str to json error,str:{}, error:{}", str, e);
        }
        return new JSONObject();
    }

}