package cn.sinata.xldutils.utils

import android.app.Activity
import android.content.ContentUris
import android.content.Context
import android.database.Cursor
import android.net.Uri
import android.os.Build
import android.os.Environment
import android.os.StatFs
import android.provider.DocumentsContract
import android.provider.MediaStore
import android.util.Log

/**
 *
 */

fun Any.getSDFreeSize():Long{
    //取得SD卡文件路径
    val path = Environment.getExternalStorageDirectory()
    val sf = StatFs(path.path)
    //获取单个数据块的大小(Byte)
    val blockSize: Long
    //空闲的数据块的数量
    val freeBlocks: Long
    if (Build.VERSION.SDK_INT >= 18) {
        blockSize = sf.blockSizeLong
        freeBlocks = sf.availableBlocksLong
    } else {
        blockSize = sf.blockSize.toLong()
        freeBlocks = sf.availableBlocks.toLong()
    }
    //返回SD卡空闲大小
    //return freeBlocks * blockSize;  //单位Byte
    //return (freeBlocks * blockSize)/1024;   //单位KB
    return freeBlocks * blockSize / 1024 / 1024 //单位MB
}

fun Activity.getUrlPath(imageUri: Uri?) :String?{
    if (imageUri == null) {
        return null
    }
    Log.e("mmp","文档uri："+imageUri)
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT && DocumentsContract.isDocumentUri(this, imageUri)) {
        if (isExternalStorageDocument(imageUri)) {
            val docId = DocumentsContract.getDocumentId(imageUri)
            Log.e("mmp","外存文件，文档id："+docId)
            val split = docId.split(":".toRegex()).dropLastWhile { it.isEmpty() }.toTypedArray()
            val type = split[0]
            if ("primary".equals(type, ignoreCase = true)) {
                return Environment.getExternalStorageDirectory().toString() + "/" + split[1]
            }
        } else if (isDownloadsDocument(imageUri)) {
            val id = DocumentsContract.getDocumentId(imageUri)
            Log.e("mmp","下载文件，文档id："+id)
            return try {
                val contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), java.lang.Long.valueOf(id))
                getDataColumn(this, contentUri, null, null)
            }catch (e:NumberFormatException){
                null
            }
        } else if (isMediaDocument(imageUri)) {
            val docId = DocumentsContract.getDocumentId(imageUri)
            Log.e("mmp","多媒体文件，文档id："+docId)
            val split = docId.split(":".toRegex()).dropLastWhile { it.isEmpty() }.toTypedArray()
            val type = split[0]
            var contentUri: Uri? = null
            if ("image" == type) {
                contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI
            } else if ("video" == type) {
                contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI
            } else if ("audio" == type) {
                contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI
            }
            val selection = MediaStore.Images.Media._ID + "=?"
            val selectionArgs = arrayOf(split[1])
            return getDataColumn(this, contentUri, selection, selectionArgs)
        }
    } // MediaStore (and general)
    else if ("content".equals(imageUri.scheme, ignoreCase = true)) {
        Log.e("mmp","content文件")
        // Return the remote address
        if (isGooglePhotosUri(imageUri))
            return imageUri.lastPathSegment
        return getDataColumn(this, imageUri, null, null)
    } else if ("file".equals(imageUri.scheme, ignoreCase = true)) {
        Log.e("mmp","file")
        return imageUri.path
    }// File
    return null
}

/**
 * @param uri The Uri to check.
 * @return Whether the Uri authority is Google Photos.
 */
fun isGooglePhotosUri(uri: Uri): Boolean = "com.google.android.apps.photos.content" == uri.authority

/**
 * @param uri The Uri to check.
 * *
 * @return Whether the Uri authority is ExternalStorageProvider.
 */
fun isExternalStorageDocument(uri: Uri): Boolean =
        "com.android.externalstorage.documents" == uri.authority

/**
 * @param uri The Uri to check.
 * *
 * @return Whether the Uri authority is DownloadsProvider.
 */
fun isDownloadsDocument(uri: Uri): Boolean =
        "com.android.providers.downloads.documents" == uri.authority

/**
 * @param uri The Uri to check.
 * *
 * @return Whether the Uri authority is MediaProvider.
 */
fun isMediaDocument(uri: Uri): Boolean = "com.android.providers.media.documents" == uri.authority

fun getDataColumn(context: Context, uri: Uri?, selection: String?, selectionArgs: Array<String>?): String? {
    if (uri == null) {
        return null
    }
    var cursor: Cursor? = null
    val column = MediaStore.Images.Media.DATA
    val projection = arrayOf(column)
    try {
        cursor = context.contentResolver.query(uri, projection, selection, selectionArgs, null)
        if (cursor != null && cursor.moveToFirst()) {
            val index = cursor.getColumnIndexOrThrow(column)
            return cursor.getString(index)
        }
    } finally {
        if (cursor != null)
            cursor.close()
    }
    return null
}

fun Activity.getVersionName():String {
    return try {
        val manager = this.packageManager
        val info = manager.getPackageInfo(this.packageName, 0)
        info.versionName!!
    } catch (e: Exception) {
        e.printStackTrace()
        "--"
    }

}