package com.hdl.photovoltaic.utils;

import android.content.Context;
import android.util.Log;

import com.hdl.photovoltaic.other.HdlLogLogic;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.nio.charset.StandardCharsets;
import java.util.Objects;


public class FileUtils {

    private static final String TAG = "FileUtils";

    /**
     * 获取内部存储文件路径
     *
     * @param context 上下文
     * @return -
     */
    public static String getInternalStoreFilesPath(Context context) {
        if (context == null) {
            return "";
        }
        return context.getFilesDir().getAbsolutePath();
    }

    public static File createFile(String dirPath, String fileName) {
        try {
            File dirFile = new File(dirPath);
            if (!dirFile.exists()) {
                if (!createFileDir(dirFile)) {
                    HdlLogLogic.print(TAG, "createFile dirFile.mkdirs fail");
                    return null;
                }
            } else if (!dirFile.isDirectory()) {
                boolean delete = dirFile.delete();
                if (delete) {
                    return createFile(dirPath, fileName);
                } else {
                    HdlLogLogic.print(TAG, "createFile dirFile !isDirectory and delete fail");
                    return null;
                }
            }
            File file = new File(dirPath, fileName);
            if (!file.exists()) {
                if (!file.createNewFile()) {
                    Log.e(TAG, "createFile createNewFile fail");
                    return null;
                }
            }
            return file;
        } catch (Exception e) {
            HdlLogLogic.print(TAG, "createFile fail :" + e.getMessage());
            e.printStackTrace();
            return null;
        }
    }

    /**
     * 创建文件夹---之所以要一层层创建，是因为一次性创建多层文件夹可能会失败！
     */
    public static boolean createFileDir(File dirFile) {
        if (dirFile == null) {
            return true;
        }
        if (dirFile.exists()) {
            return true;
        }
        File parentFile = dirFile.getParentFile();
        if (parentFile != null && !parentFile.exists()) {
            //父文件夹不存在，则先创建父文件夹，再创建自身文件夹
            return createFileDir(parentFile) && createFileDir(dirFile);
        } else {
            boolean mkdirs = dirFile.mkdirs();
            boolean isSuccess = mkdirs || dirFile.exists();
            if (!isSuccess) {
                Log.e("FileUtil", "createFileDir fail " + dirFile);
            }
            return isSuccess;
        }
    }

    public static void writeFile(String path, String data) {
        try {
            File file = new File(path);
            if (!file.exists()) {
                if (!file.mkdir() && !file.isDirectory()) {
                    HdlLogLogic.print(TAG, "Error: make dir failed!");
                    return;
                }
            }
            FileOutputStream d = new FileOutputStream(file);
            d.write(data.getBytes());
            d.flush();
            d.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

    public static String readFile(String filepath) {
        try {
            String fileContent = "";
            if (null == filepath) {
                Log.d(TAG, "Error: Invalid file name!");
                return fileContent;
            }

            File f = new File(filepath);
            if (!f.exists()) {
                return fileContent;
            }
            FileInputStream fis = new FileInputStream(f);
            byte[] bytes = new byte[(int) f.length()];
            fis.read(bytes);
            fis.close();
            fileContent = new String(bytes, 0, bytes.length);
            return fileContent;
        } catch (Exception e1) {
            e1.printStackTrace();
            Log.d(TAG, "Error: Input File not find!");
            return "";
        }

    }

}