/**
* Check the file and copy it to the destination
*
* @return bool
*/
function upload($chmod = 0644){
if( $this->uploadDir == '' ){
$this->setErrors('Upload directory not set');
return false;
}

if( !is_dir($this->uploadDir) ){
$this->setErrors('Failed opening directory: ' . $this->uploadDir);
}

if( !is_writeable($this->uploadDir) ){
$this->setErrors('Failed opening directory with write permission: ' . $this->uploadDir);
}

if( !is_dir($this->uploadDir) ){
mkdir($this->uploadDir);
chmod($this->uploadDir, 0777);
}elseif( !is_writeable($this->uploadDir) ){
chmod($this->uploadDir, 0777);
}

if( !$this->checkMaxFileSize() ){
$this->setErrors(sprintf('File Size: %u. Maximum Size Allowed: %u' , $this->mediaSize, $this->maxFileSize));
}

if( is_array($this->dimension) ){
if( !$this->checkMaxWidth($this->dimension[0])){
$this->setErrors(sprintf('File width: %u. Maximum width allowed: %u', $this->dimension[0], $this->maxWidth));
}
if( !$this->checkMaxHeight($this->dimension[1])){
$this->setErrors(sprintf('File height: %u. Maximum height allowed: %u', $this->dimension[1], $this->maxHeight));
}
}

if( !$this->checkMimeType() ){
$this->setErrors('MIME type not allowed: ' . $this->mediaType);
}

if( !$this->checkExtension() ){
$this->setErrors('Extension not allowed: ' . $this->mediaName);
}

if( count($this->errors) > 0 ){
return false;
}

if( !$this->_copyFile($chmod) ){
$this->setErrors('Failed uploading file: ' . $this->mediaName);
}

if( count($this->errors) > 0 ){
return false;
}
return true;
}