package com.highway.study.util;

import android.annotation.TargetApi;
import android.content.ContentUris;
import android.content.Context;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.DocumentsContract;
import android.provider.MediaStore;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

/**
 * Created by zhaijikui on 2015/12/7 0007.
 */
public class FileUtils {

    public static File createDir(String path) {
        File dir = new File(path);
        if (!dir.exists()) {
            if (Environment.getExternalStorageState().equals(
                    Environment.MEDIA_MOUNTED)) {
                dir.mkdirs();
            }
        }
        return dir;
    }
    public static void deleteDir(String path) {
        File dir = new File(path);
        if (dir == null || !dir.exists() || !dir.isDirectory())
            return;

        for (File file : dir.listFiles()) {
            if (file.isFile())
                file.delete();
            else if (file.isDirectory())
                deleteDir(path);
        }
        dir.delete();
    }

    public static void deleteDirContent(String path) {
        File dir = new File(path);
        if (dir == null || !dir.exists() || !dir.isDirectory())
            return;

        for (File file : dir.listFiles()) {
            if (file.isFile())
                file.delete();
            else if (file.isDirectory())
                deleteDirContent(file.getPath());
        }
    }

    public static boolean fileIsExists(String path) {
        try {
            File f = new File(path);
            if (!f.exists()) {
                return false;
            }
        } catch (Exception e) {

            return false;
        }
        return true;
    }

    public static void saveBitmapFile(Bitmap bitmap, String path) {
        File file = new File(path);// 将要保存图片的路径
        try {
            FileOutputStream out = new FileOutputStream(file);
            bitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
            out.flush();
            out.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    /**
     * 专为Android4.4设计的从Uri获取文件绝对路径,以前的方法已不好使
     */

    @TargetApi(Build.VERSION_CODES.KITKAT)
    public static String getPath(final Context context, final Uri uri) {

        final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;

        // DocumentProvider
        if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
            // ExternalStorageProvider
            if (isExternalStorageDocument(uri)) {
                final String docId = DocumentsContract.getDocumentId(uri);
                final String[] split = docId.split(":");
                final String type = split[0];

                if ("25DA-14E4".equalsIgnoreCase(type)) {
                    return Environment.getExternalStorageDirectory() + "/"
                            + split[1];
                }else if ("primary".equalsIgnoreCase(type)) {
                    return Environment.getExternalStorageDirectory() + "/"
                            + split[1];
                }

            }
            // DownloadsProvider
            else if (isDownloadsDocument(uri)) {

                final String id = DocumentsContract.getDocumentId(uri);
                final Uri contentUri = ContentUris.withAppendedId(
                        Uri.parse("content://downloads/public_downloads"),
                        Long.valueOf(id));

                return getDataColumn(context, contentUri, null, null);
            }
            // MediaProvider
            else if (isMediaDocument(uri)) {
                final String docId = DocumentsContract.getDocumentId(uri);
                final String[] split = docId.split(":");
                final String type = split[0];

                Uri contentUri = null;
                if ("image".equals(type)) {
                    contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
                } else if ("video".equals(type)) {
                    contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
                } else if ("audio".equals(type)) {
                    contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
                }

                final String selection = "_id=?";
                final String[] selectionArgs = new String[]{split[1]};

                return getDataColumn(context, contentUri, selection, selectionArgs);
            }
        }
        // MediaStore (and general)
        else if ("content".equalsIgnoreCase(uri.getScheme())) {
            return getDataColumn(context, uri, null, null);
        }
        // File
        else if ("file".equalsIgnoreCase(uri.getScheme())) {
            return uri.getPath();
        }

        return null;
    }

    /**
     * Android下获取包路径(Package),如果路径不存在则创建
     * @param context 上下文环境
     * @return 软件的包路径
     */
    public static String getPackagePath(Context context) {
        String packagePath = "";
        if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
            File packageFile = new File(Environment.getExternalStorageDirectory(), context.getPackageName());
            if (!packageFile.exists()) {
                if(packageFile.mkdirs()) {
                    packagePath = packageFile.getAbsolutePath();
                }
            } else {
                packagePath = packageFile.toString();
            }
        }
        return packagePath;
    }

    private static boolean isDownloadsDocument(Uri uri) {
        return "com.android.providers.downloads.documents".equals(uri
                .getAuthority());
    }

    /**
     * Get the value of the data column for this Uri. This is useful for
     * MediaStore Uris, and other file-based ContentProviders.
     *
     * @param context       The context.
     * @param uri           The Uri to query.
     * @param selection     (Optional) Filter used in the query.
     * @param selectionArgs (Optional) Selection arguments used in the query.
     * @return The value of the _data column, which is typically a file path.
     */
    private static String getDataColumn(Context context, Uri uri,
                                        String selection, String[] selectionArgs) {

        Cursor cursor = null;
        final String column = "_data";
        final String[] projection = {column};

        try {
            cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
            if (cursor != null && cursor.moveToFirst()) {
                final int column_index = cursor.getColumnIndexOrThrow(column);
                return cursor.getString(column_index);
            }
        } finally {
            if (cursor != null)
                cursor.close();
        }
        return null;
    }

    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is ExternalStorageProvider.
     */
    private static boolean isExternalStorageDocument(Uri uri) {
        return "com.android.externalstorage.documents".equals(uri
                .getAuthority());
    }

    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is MediaProvider.
     */
    private static boolean isMediaDocument(Uri uri) {
        return "com.android.providers.media.documents".equals(uri
                .getAuthority());
    }

    /**
     * 将图片写入sd卡
     *
     */
    public static  void inputPicTosdcard(Bitmap bitmap, String picName) {
        if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);

            File SDFile = Environment.getExternalStorageDirectory();
            File destDir = new File(SDFile.getAbsolutePath() + "/qqcyData/");//文件目录

            if (!destDir.exists()) {//判断目录是否存在,不存在创建
                destDir.mkdir();//创建目录
            }
            File pic = new File(destDir.getPath() + File.separator +picName);
            if (!pic.exists()) {
                try {
                    pic.createNewFile();//创建文件
                    FileOutputStream outputStream = new FileOutputStream(pic, true);
                    outputStream.write(baos.toByteArray());//写入内容
                    outputStream.close();//关闭流
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

}