package com.arpa.hndahesudintocctmsdriver.util;

import com.arpa.hndahesudintocctmsdriver.FileUtils;

import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;

/**
 * @ClassName FileIOUtils
 * @Author john
 * @Date 2024/3/29 09:50
 * @Description TODO
 */
public class FileIOUtils {

    private FileIOUtils() {
        throw new UnsupportedOperationException("u can't instantiate me...");
    }

    private static final String LINE_SEP = System.getProperty("line.separator");

    /**
     * 将输入流写入文件
     *
     * @param filePath 路径
     * @param is       输入流
     * @return {@code true}: 写入成功<br>{@code false}: 写入失败
     */
    public static boolean writeFileFromIS(String filePath, final InputStream is) {
        return writeFileFromIS(FileUtils.getFileByPath(filePath), is, false);
    }

    /**
     * 将输入流写入文件
     *
     * @param filePath 路径
     * @param is       输入流
     * @param append   是否追加在文件末
     * @return {@code true}: 写入成功<br>{@code false}: 写入失败
     */
    public static boolean writeFileFromIS(String filePath, final InputStream is, boolean append) {
        return writeFileFromIS(FileUtils.getFileByPath(filePath), is, append);
    }

    /**
     * 将输入流写入文件
     *
     * @param file 文件
     * @param is   输入流
     * @return {@code true}: 写入成功<br>{@code false}: 写入失败
     */
    public static boolean writeFileFromIS(File file, final InputStream is) {
        return writeFileFromIS(file, is, false);
    }

    /**
     * 将输入流写入文件
     *
     * @param file   文件
     * @param is     输入流
     * @param append 是否追加在文件末
     * @return {@code true}: 写入成功<br>{@code false}: 写入失败
     */
    public static boolean writeFileFromIS(File file, final InputStream is, boolean append) {
        if (!FileUtils.createOrExistsFile(file) || is == null) return false;
        OutputStream os = null;
        try {
            os = new BufferedOutputStream(new FileOutputStream(file, append));
            byte data[] = new byte[1024];
            int len;
            while ((len = is.read(data, 0, 1024)) != -1) {
                os.write(data, 0, len);
            }
            return true;
        } catch (IOException e) {
            e.printStackTrace();
            return false;
        } finally {
            try {
                is.close();
                os.close();
            } catch (IOException e) {
                e.printStackTrace();
            }

        }
    }


    /**
     * 将字符串写入文件
     *
     * @param filePath 文件路径
     * @param content  写入内容
     * @return {@code true}: 写入成功<br>{@code false}: 写入失败
     */
    public static boolean writeFileFromString(String filePath, String content) {
        return writeFileFromString(FileUtils.getFileByPath(filePath), content, false);
    }

    /**
     * 将字符串写入文件
     *
     * @param filePath 文件路径
     * @param content  写入内容
     * @param append   是否追加在文件末
     * @return {@code true}: 写入成功<br>{@code false}: 写入失败
     */
    public static boolean writeFileFromString(String filePath, String content, boolean append) {
        return writeFileFromString(FileUtils.getFileByPath(filePath), content, append);
    }

    /**
     * 将字符串写入文件
     *
     * @param file    文件
     * @param content 写入内容
     * @return {@code true}: 写入成功<br>{@code false}: 写入失败
     */
    public static boolean writeFileFromString(File file, String content) {
        return writeFileFromString(file, content, false);
    }

    /**
     * 将字符串写入文件
     *
     * @param file    文件
     * @param content 写入内容
     * @param append  是否追加在文件末
     * @return {@code true}: 写入成功<br>{@code false}: 写入失败
     */
    public static boolean writeFileFromString(File file, String content, boolean append) {
        if (file == null || content == null) return false;
        if (!FileUtils.createOrExistsFile(file)) return false;
        BufferedWriter bw = null;
        try {
            bw = new BufferedWriter(new FileWriter(file, append));
            bw.write(content);
            bw.newLine();
            return true;
        } catch (IOException e) {
            e.printStackTrace();
            return false;
        } finally {
            try {
                bw.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }


    /**
     * 读取文件到字符串中
     *
     * @param filePath 文件路径
     * @return 字符串
     */
    public static String readFile2String(String filePath) {
        return readFile2String(FileUtils.getFileByPath(filePath), null);
    }

    /**
     * 读取文件到字符串中
     *
     * @param filePath    文件路径
     * @param charsetName 编码格式
     * @return 字符串
     */
    public static String readFile2String(String filePath, String charsetName) {
        return readFile2String(FileUtils.getFileByPath(filePath), charsetName);
    }

    /**
     * 读取文件到字符串中
     *
     * @param file 文件
     * @return 字符串
     */
    public static String readFile2String(File file) {
        return readFile2String(file, null);
    }

    /**
     * 读取文件到字符串中
     *
     * @param file        文件
     * @param charsetName 编码格式
     * @return 字符串
     */
    public static String readFile2String(File file, String charsetName) {
        if (!FileUtils.isFileExists(file)) return null;
        BufferedReader reader = null;
        try {
            StringBuilder sb = new StringBuilder();
            if (isSpace(charsetName)) {
                reader = new BufferedReader(new InputStreamReader(new FileInputStream(file)));
            } else {
                reader = new BufferedReader(new InputStreamReader(new FileInputStream(file), charsetName));
            }
            String line;
            while ((line = reader.readLine()) != null) {
                sb.append(line).append(LINE_SEP);
            }
            // delete the last line separator
            return sb.delete(sb.length() - LINE_SEP.length(), sb.length()).toString();
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        } finally {
            try {
                reader.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }


    private static boolean isSpace(String s) {
        if (s == null) return true;
        for (int i = 0, len = s.length(); i < len; ++i) {
            if (!Character.isWhitespace(s.charAt(i))) {
                return false;
            }
        }
        return true;
    }

}