<?php
session_start();
require("includes/check_auth_user.php");
require("includes/dbconnect.php");
require("includes/function.php");
    

$admin  = $_SESSION["admin_" . $dbname];
$zdb    = $_SESSION["zdbyear_" . $dbname];
$datestamp = date("Y-m-d");      // Current date to append to filename of backup file in format of YYYY-MM-DD
##################### 
//CONFIGURATIONS  
#####################
// Define the name of the backup directory
define("OUTPUT_DIR", 'backupdb');
// Define  Database Credentials
define('HOST', 'localhost');
define('USER', 'apps4rea_user');
define('PASSWORD', 'rajF@1998');
define('DB_NAME', $zdb);
/*
  Define the filename for the sql file
  If you plan to upload the  file to Amazon's S3 service , use only lower-case letters
 */
$fileName = 'mysqlbackup--' . date('d-m-Y') . '@' . date('h.i.s') . '.sql';
// Set execution time limit

if (function_exists('max_execution_time')) {
    if (ini_get('max_execution_time') > 0)
        set_time_limit(0);
}

###########################  
//END  OF  CONFIGURATIONS  
###########################
// Check if directory is already created and has the proper permissions


if (!file_exists(OUTPUT_DIR))
    mkdir(OUTPUT_DIR, 0700);
if (!is_writable(OUTPUT_DIR))
    chmod(OUTPUT_DIR, 0700);

// Create an ".htaccess" file , it will restrict direct accss to the backup-directory . 
$content = 'deny from all';
$file = new SplFileObject(OUTPUT_DIR . '/.htaccess', "w");
$file->fwrite($content);

$mysqli = new mysqli(HOST, USER, PASSWORD, DB_NAME);
if (mysqli_connect_errno()) {
    printf("Connect failed: %s", mysqli_connect_error());
    exit();
}


// Introduction information
$return .= "--\n";
$return .= "-- A Mysql Backup System \n";
$return .= "--\n";
$return .= '-- Export created: ' . date("Y/m/d") . ' on ' . date("h:i") . "\n\n\n";
$return = "--\n";
$return .= "-- Database : " . DB_NAME . "\n";
$return .= "--\n";
$return .= "-- --------------------------------------------------\n";
$return .= "-- ---------------------------------------------------\n";
$return .= 'SET AUTOCOMMIT = 0 ;' . "\n";
$return .= 'SET FOREIGN_KEY_CHECKS=0 ;' . "\n";
$tables = array();
// Exploring what tables this database has
$result = $mysqli->query('SHOW TABLES');
// Cycle through "$result" and put content into an array
while ($row = $result->fetch_row()) {
    $tables[] = $row[0];
}
// Cycle through each  table
foreach ($tables as $table) {
// Get content of each table
    $result = $mysqli->query('SELECT * FROM ' . $table);
// Get number of fields (columns) of each table
    $num_fields = $mysqli->field_count;
// Add table information
    $return .= "--\n";
    $return .= '-- Tabel structure for table `' . $table . '`' . "\n";
    $return .= "--\n";
    $return.= 'DROP TABLE  IF EXISTS `' . $table . '`;' . "\n";
// Get the table-shema
    $shema = $mysqli->query('SHOW CREATE TABLE ' . $table);
// Extract table shema 
    $tableshema = $shema->fetch_row();
// Append table-shema into code
    $return.= $tableshema[1] . ";" . "\n\n";
// Cycle through each table-row
    while ($rowdata = $result->fetch_row()) {
// Prepare code that will insert data into table 
        $return .= 'INSERT INTO `' . $table . '`  VALUES ( ';
// Extract data of each row 
        for ($i = 0; $i < $num_fields; $i++) {
            $return .= '"' . mysqli_real_escape_string($mysqli, $rowdata[$i]) . "\",";
        }
        // Let's remove the last comma 
        $return = substr("$return", 0, -1);
        $return .= ");" . "\n";
    }
    $return .= "\n\n";
}

// Close the connection
$mysqli->close();
$return .= 'SET FOREIGN_KEY_CHECKS = 1 ; ' . "\n";
$return .= 'COMMIT ; ' . "\n";
$return .= 'SET AUTOCOMMIT = 1 ; ' . "\n";


//$file = file_put_contents($fileName , $return) ; 
$zip = new ZipArchive();


$resOpen = $zip->open(OUTPUT_DIR . '/' . $fileName . ".zip", ZIPARCHIVE::CREATE);
if ($resOpen) {
    $zip->addFromString($fileName, "$return");
}

$zip->close();
$fileSize = get_file_size_unit(filesize(OUTPUT_DIR . "/" . $fileName . '.zip'));
$message = <<<msg
  <h2>BACKUP  completed .</h2>
 
  the archive has the name of  : <b>  $fileName  </b> and it's file-size is :   $fileSize  .

 
msg;
echo $message;

// Function to append proper Unit after file-size . 
function get_file_size_unit($file_size) {
    switch (true) {
        case ($file_size / 1024 < 1) :
            return intval($file_size) . " Bytes";
            break;
        case ($file_size / 1024 >= 1 && $file_size / (1024 * 1024) < 1) :
            return intval($file_size / 1024) . " KB";
            break;
        default:
            return intval($file_size / (1024 * 1024)) . " MB";
    }
}

/*  Download Backup Into Zip for Local Computer   */

// Creating zip File
$zipfname = $zdb . "_" . date("Y-m-d_H-i-s").".zip";
$zip = new ZipArchive();
if($zip->open($zipfname,ZIPARCHIVE::CREATE)) 
{
   $zip->addFromString($fileName,$return);
   $zip->close();
}
 
// read zip file and send it to standard output
if (file_exists($zipfname)) {
    header('Content-Description: File Transfer');
    header('Content-Type: application/octet-stream');
    header('Content-Disposition: attachment; filename='.basename($zipfname));
    flush();
    readfile($zipfname);
    exit; 
}

/*  Email Part  */

$htmlbody = " Your Mail Contant Here.... You can use html tags here...";
$to = "arish850@gmail.com"; //Recipient Email Address
$subject = "Test email with attachment"; //Email Subject
$headers = "From: arish850@gmail.com\r\nReply-To: arish850@gmail.com";
$random_hash = md5(date('r', time()));
$headers .= "\r\nContent-Type: multipart/mixed; 
boundary=\"PHP-mixed-".$random_hash."\"";
// Set your file path here
$attachment = chunk_split(base64_encode(file_get_contents('backupdb'))); 


//define the body of the message.
$message = "--PHP-mixed-$random_hash\r\n"."Content-Type: multipart/alternative; 
boundary=\"PHP-alt-$random_hash\"\r\n\r\n";
$message .= "--PHP-alt-$random_hash\r\n"."Content-Type: text/plain; 
charset=\"iso-8859-1\"\r\n"."Content-Transfer-Encoding: 7bit\r\n\r\n";


//Insert the html message.
$message .= $htmlbody;
$message .="\r\n\r\n--PHP-alt-$random_hash--\r\n\r\n";


//include attachment
$message .= "--PHP-mixed-$random_hash\r\n"."Content-Type: application/zip; 
name=\"$fileName\"\r\n"."Content-Transfer-Encoding: 
base64\r\n"."Content-Disposition: attachment\r\n\r\n";

$message .= $attachment;
$message .= "/r/n--PHP-mixed-$random_hash--";


//send the email
$mail = mail( $to, $subject , $message, $headers );

echo $mail ? "Mail sent" : "Mail failed";




?>
<html>
    <head>
        <script src="http://code.jquery.com/jquery-1.10.1.min.js"></script>
        <script>
            $('#buttonID').click(function(){
            $('#img').show(); //<----here
            $.ajax({
              ....
             success:function(result){
                 $('#img').hide();  //<--- hide again
            }
        }
        </script>
    </head>
    <body>
        <img src="..\images\loading.gif" id="img" style="display:none" >
    </body>        
</html>