<?php // $Id: user_import.php 20441 2009-05-10 07:39:15Z ivantcholakov $
/* For licensing terms, see /dokeos_license.txt */
/**
==============================================================================
*   This tool allows platform admins to add users by uploading a CSV or XML file
* @todo Add some langvars to DLTT
*	@package dokeos.admin
==============================================================================
*/
/**
 * validate the imported data
 */
function validate_data($users) {
	global $defined_auth_sources;
	$errors = array ();
	$usernames = array ();
	foreach ($users as $index => $user) {
		//1. check if mandatory fields are set	
		$mandatory_fields = array ('LastName', 'FirstName');
		if (api_get_setting('registration', 'email') == 'true') {
			$mandatory_fields[] = 'Email';	
		}
		foreach ($mandatory_fields as $key => $field) {
			if (!isset ($user[$field]) || strlen($user[$field]) == 0) {
				$user['error'] = get_lang($field.'Mandatory');
				$errors[] = $user;
			}
		}
		//2. check username
		if (isset ($user['UserName']) && strlen($user['UserName']) != 0) {
			//2.1. check if no username was used twice in import file
			if (isset ($usernames[$user['UserName']])) {
				$user['error'] = get_lang('UserNameUsedTwice');
				$errors[] = $user;
			}
			$usernames[$user['UserName']] = 1;
			//2.2. check if username isn't allready in use in database
			if (!UserManager :: is_username_available($user['UserName'])) {
				$user['error'] = get_lang('UserNameNotAvailable');
				$errors[] = $user;
			}
			//2.3. check if username isn't longer than the 20 allowed characters
			if (api_strlen($user['UserName']) > 20) {
				$user['error'] = get_lang('UserNameTooLong');
				$errors[] = $user;
			}
		}
		//3. check status
		if (isset ($user['Status']) && !api_status_exists($user['Status'])) {
			$user['error'] = get_lang('WrongStatus');
			$errors[] = $user;
		}
		//4. Check classname
		if (isset ($user['ClassName']) && strlen($user['ClassName']) != 0) {
			if (!ClassManager :: class_name_exists($user['ClassName'])) {
				$user['error'] = get_lang('ClassNameNotAvailable');
				$errors[] = $user;
			}
		}
		//5. Check authentication source
		if (isset ($user['AuthSource']) && strlen($user['AuthSource']) != 0) {
			if (!in_array($user['AuthSource'], $defined_auth_sources)) {
				$user['error'] = get_lang('AuthSourceNotAvailable');
				$errors[] = $user;
			}
		}
	}
	return $errors;
}
/**
 * Add missing user-information (which isn't required, like password, username
 * etc)
 */
function complete_missing_data($user) {
	//1. Create a username if necessary
	if (!isset ($user['UserName']) || strlen($user['UserName']) == 0) {
		$username = api_strtolower(api_ereg_replace('[^a-zA-Z]', '', api_substr($user['FirstName'], 0, 3).' '.api_substr($user['LastName'], 0, 4)));
		if (!UserManager :: is_username_available($username)) {
			$i = 0;
			$temp_username = $username.$i;
			while (!UserManager :: is_username_available($temp_username)) {
				$temp_username = $username.++$i;
			}
			$username = $temp_username;
		}
		$user['UserName'] = $username;
	}
	//2. generate a password if necessary
	if (!isset ($user['Password']) || strlen($user['Password']) == 0) {
		$user['Password'] = api_generate_password();
	}
	//3. set status if not allready set
	if (!isset ($user['Status']) || strlen($user['Status']) == 0) {
		$user['Status'] = 'user';
	}
	//4. set authsource if not allready set
	if (!isset ($user['AuthSource']) || strlen($user['AuthSource']) == 0) {
		$user['AuthSource'] = PLATFORM_AUTH_SOURCE;
	}
	return $user;
}
/**
 * Save the imported data
 * @param   array   List of users
 * @return  void
 * @uses global variable $inserted_in_course, which returns the list of courses the user was inserted in
 */
function save_data($users) {
    global $inserted_in_course;
    // not all scripts declare the $inserted_in_course array (although they should)
    if (!isset($inserted_in_course)) { $inserted_in_course = array(); }
	require_once(api_get_path(INCLUDE_PATH).'lib/mail.lib.inc.php');
	$user_table = Database :: get_main_table(TABLE_MAIN_USER);
	$sendMail = $_POST['sendMail'] ? 1 : 0;
	if (is_array($users)) {
        foreach ($users as $index => $user)	{
    		$user = complete_missing_data($user);
    		
    		$user['Status'] = api_status_key($user['Status']);
    		
    		$user_id = UserManager :: create_user($user['FirstName'], $user['LastName'], $user['Status'], $user['Email'], $user['UserName'], $user['Password'], $user['OfficialCode'], api_get_setting('PlatformLanguage'), $user['PhoneNumber'], '', $user['AuthSource']);
            if (!is_array($user['Courses']) && !empty($user['Courses'])) {
            	$user['Courses'] = array($user['Courses']);
            }
            if (is_array($user['Courses'])) {
        		foreach ($user['Courses'] as $index => $course) {
        			if (CourseManager :: course_exists($course)) {
        				CourseManager :: subscribe_user($user_id, $course,$user['Status']);
                        $c_info = CourseManager::get_course_information($course); 
                        $inserted_in_course[$course] = $c_info['title'];
                    } 
                    if (CourseManager :: course_exists($course,true)) {
                    	// also subscribe to virtual courses through check on visual code
                        $list = CourseManager :: get_courses_info_from_visual_code($course);
                        foreach ($list as $vcourse) {
                        	if ($vcourse['code'] == $course) {
                        		//ignore, this has already been inserted
                        	} else {
                                CourseManager :: subscribe_user($user_id, $vcourse['code'],$user['Status']);                		
                                $inserted_in_course[$vcourse['code']] = $vcourse['title'];
                        	}
                        }
                    }
        		}
            }
    		if (strlen($user['ClassName']) > 0) {
    			$class_id = ClassManager :: get_class_id($user['ClassName']);
    			ClassManager :: add_user($user_id, $class_id);
    		}
    		
    		//saving extra fields
			global $extra_fields;
			//print_R($user);	
			//we are sure the extra field exist
			foreach($extra_fields as $extras) {			
				if (isset($user[$extras[1]])) {
						$key 	= $extras[1];					 
						$value 	= $user[$extras[1]];
						UserManager::update_extra_field_value($user_id,$key,$value);	
				}
			}
		
    		if ($sendMail) {			
    			$recipient_name = $user['FirstName'].' '.$user['LastName'];
    			$emailsubject = '['.api_get_setting('siteName').'] '.get_lang('YourReg').' '.api_get_setting('siteName');			
    			$emailbody = get_lang('Dear').$user['FirstName'].' '.$user['LastName'].",\n\n".get_lang('YouAreReg')." ".api_get_setting('siteName')." ".get_lang('Settings')." $user[UserName]\n".get_lang('Pass')." : $user[Password]\n\n".get_lang('Address')." ".api_get_setting('siteName')." ".get_lang('Is')." : ".api_get_path('WEB_PATH')." \n\n".get_lang('Problem')."\n\n".get_lang('Formula').",\n\n".api_get_setting('administratorName')." ".api_get_setting('administratorSurname')."\n".get_lang('Manager')." ".api_get_setting('siteName')."\nT. ".api_get_setting('administratorTelephone')."\n".get_lang('Email')." : ".api_get_setting('emailAdministrator')."";						
    			$sender_name = get_setting('administratorName').' '.get_setting('administratorSurname');
    		    $email_admin = get_setting('emailAdministrator');			
    			@api_mail($recipient_name, $user['Email'], $emailsubject, $emailbody, $sender_name,$email_admin);
    		}
    
    	}
    }
}
/**
 * Read the CSV-file 
 * @param string $file Path to the CSV-file
 * @return array All userinformation read from the file
 */
function parse_csv_data($file) {
	$users = Import :: csv_to_array($file);
	foreach ($users as $index => $user) {
		if (isset ($user['Courses'])) {
			$user['Courses'] = explode('|', trim($user['Courses']));
		}
		$users[$index] = $user;
	}
	return $users;
}
/**
 * XML-parser: handle start of element
 */
function element_start($parser, $data) {
	global $user;
	global $current_tag;
	switch ($data) {
		case 'Contact' :
			$user = array ();
			break;
		default :
			$current_tag = $data;
	}
}
/**
 * XML-parser: handle end of element
 */
function element_end($parser, $data) {
	global $user;
	global $users;
	global $current_value;
	switch ($data)
	{
		case 'Contact' :
			if ($user['Status'] == '5')
			{
				$user['Status'] = STUDENT;
			}
			if ($user['Status'] == '1')
			{
				$user['Status'] = COURSEMANAGER;
			}
			$users[] = $user;
			break;
		default :
			$user[$data] = $current_value;
			break;
	}
}
/**
 * XML-parser: handle character data
 */
function character_data($parser, $data) {
	global $current_value;
	$current_value = $data;
}
/**
 * Read the XML-file
 * @param string $file Path to the XML-file
 * @return array All userinformation read from the file
 */
function parse_xml_data($file) {
	global $current_tag;
	global $current_value;
	global $user;
	global $users;
	$users = array ();
	$parser = xml_parser_create();
	xml_set_element_handler($parser, 'element_start', 'element_end');
	xml_set_character_data_handler($parser, "character_data");
	xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, false);
	xml_parse($parser, file_get_contents($file));
	xml_parser_free($parser);
	return $users;
}
// name of the language file that needs to be included
$language_file = array ('admin', 'registration');

$cidReset = true;
include ('../inc/global.inc.php');
$this_section = SECTION_PLATFORM_ADMIN;
api_protect_admin_script();
require_once (api_get_path(LIBRARY_PATH).'fileManage.lib.php');
require_once (api_get_path(LIBRARY_PATH).'usermanager.lib.php');
require_once (api_get_path(LIBRARY_PATH).'classmanager.lib.php');
require_once (api_get_path(LIBRARY_PATH).'import.lib.php');
require_once (api_get_path(LIBRARY_PATH).'formvalidator/FormValidator.class.php');
$formSent = 0;
$errorMsg = '';
$defined_auth_sources[] = PLATFORM_AUTH_SOURCE;
if (is_array($extAuthSource)) {
	$defined_auth_sources = array_merge($defined_auth_sources, array_keys($extAuthSource));
}

$tool_name = get_lang('ImportUserListXMLCSV');

$interbreadcrumb[] = array ("url" => 'index.php', "name" => get_lang('PlatformAdmin'));

set_time_limit(0);
$extra_fields = Usermanager::get_extra_fields(0, 0, 5, 'ASC',false);
$user_id_error=array();
if ($_POST['formSent'] AND $_FILES['import_file']['size'] !== 0) {
	$file_type = $_POST['file_type'];
	if (strcmp($file_type,'csv')===0 && strcmp($_FILES['import_file']['type'],'text/'.$file_type.'')===0) {
		$users = parse_csv_data($_FILES['import_file']['tmp_name']);
		$errors = validate_data($users);
		$error_kind_file=false;
	} elseif (strcmp($file_type,'xml')===0 && strcmp($_FILES['import_file']['type'],'text/'.$file_type.'')===0) {
		$users = parse_xml_data($_FILES['import_file']['tmp_name']);
		$errors = validate_data($users);
		$error_kind_file=false;
	} else {
		$error_kind_file=true;
	}
	
	//list user id whith error
    if (is_array($errors) && is_array($users)) {
		foreach ($errors as $my_errors) {
			$user_id_error[]=$my_errors['UserId'];
		}
	
		foreach ($users as $my_user) {
			if (!in_array($my_user['UserId'],$user_id_error)) {
				$users_to_insert[]=$my_user;
			}
		}
    }
	if ( count($users_to_insert)>0 && $error_kind_file===false ) {
		$errors=array();
		$users=$users_to_insert;
		$see_message_import=get_lang('FileImportedJustUsersThatAreNotRegistered');
	} else {
		$see_message_import=get_lang('FileImported');
	}
	
	if ( count($errors) == 0 && $error_kind_file===false ) {
        $inserted_in_course = array();
		save_data($users);
        $msg2 = '';
        if (count($inserted_in_course)>1) {
        	$msg2 .= get_lang('UsersSubscribedToSeveralCoursesBecauseOfVirtualCourses').':';
            foreach ($inserted_in_course as $course) {
            	$msg2 .= ' '.$course.',';
            }
            $msg2 = substr($msg2,0,-1);
        }
        Security::clear_token();
        $tok = Security::get_token();       
		header('Location: user_list.php?action=show_message&message='.urlencode($see_message_import).'&warn='.urlencode($msg2).'&sec_token='.$tok);
		exit ();
	}
}
Display :: display_header($tool_name);
//api_display_tool_title($tool_name);

if($_FILES['import_file']['size'] == 0 AND $_POST) {
	Display::display_error_message(get_lang('ThisFieldIsRequired'));
}

if (count($errors) != 0) {
	$error_message = '<ul>';
	foreach ($errors as $index => $error_user) {
		$error_message .= '<li><b>'.$error_user['error'].'</b>: ';
		$error_message .= $error_user['UserName'].'&nbsp;('.$error_user['FirstName'].' '.$error_user['LastName'].')';
		$error_message .= '</li>';
	}
	$error_message .= '</ul>';
	Display :: display_error_message($error_message, false);
}
if ($error_kind_file===true) {
	Display :: display_error_message(get_lang('YouMustImportAFileAccordingToSelectedOption'));
}
$form = new FormValidator('user_import');
$form->addElement('header', '', $tool_name);
$form->addElement('hidden', 'formSent');
$form->addElement('file', 'import_file', get_lang('ImportFileLocation'));
$form->addRule('import_file', get_lang('ThisFieldIsRequired'), 'required');
$allowed_file_types = array ('xml', 'csv');
$form->addRule('file', get_lang('InvalidExtension').' ('.implode(',', $allowed_file_types).')', 'filetype', $allowed_file_types);
$form->addElement('radio', 'file_type', get_lang('FileType'), 'XML (<a href="exemple.xml" target="_blank">'.get_lang('ExampleXMLFile').'</a>)', 'xml');
$form->addElement('radio', 'file_type', null, 'CSV (<a href="exemple.csv" target="_blank">'.get_lang('ExampleCSVFile').'</a>)', 'csv');
$form->addElement('radio', 'sendMail', get_lang('SendMailToUsers'), get_lang('Yes'), 1);
$form->addElement('radio', 'sendMail', null, get_lang('No'), 0);
$form->addElement('style_submit_button', 'submit',get_lang('Import'),'class="save"');
$defaults['formSent'] = 1;
$defaults['file_type'] = 'xml';
$form->setDefaults($defaults);
$form->display();

$list=array();
$list_reponse=array();
$result_xml = '' ;
$i=0;
$count_fields = count($extra_fields);
if ($count_fields > 0) {
	foreach($extra_fields as $extra) {
		$list[] = $extra[1];
		$list_reponse[]='xxx';				
		$spaces = '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;';
		$result_xml.=$spaces.'&lt;'.$extra[1].'&gt;xxx&lt;/'.$extra[1].'&gt;';	
		if ($i!=$count_fields-1)
			$result_xml.='<br/>';
		$i++;	
	}
}
?>
<p><?php echo get_lang('CSVMustLookLike').' ('.get_lang('MandatoryFields').')'; ?> :</p>

<blockquote>
<pre>
<b>LastName</b>;<b>FirstName</b>;<b>Email</b>;UserName;Password;AuthSource;OfficialCode;PhoneNumber;Status;<font style="color:red;"><?php if(count($list)>0) echo implode(';', $list).';';?></font>Courses;ClassName;
<b>xxx</b>;<b>xxx</b>;<b>xxx</b>;xxx;xxx;<?php echo implode('/',$defined_auth_sources); ?>;xxx;xxx;user/teacher/drh;<font style="color:red;"><?php if(count($list_reponse)>0) echo implode(';', $list_reponse).';';?></font>xxx1|xxx2|xxx3;xxx;<br />
</pre>
</blockquote>

<p><?php echo get_lang('XMLMustLookLike').' ('.get_lang('MandatoryFields').')'; ?> :</p>

<blockquote>
<pre>
&lt;?xml version=&quot;1.0&quot; encoding=&quot;ISO-8859-1&quot;?&gt;
&lt;Contacts&gt;
    &lt;Contact&gt;
        <b>&lt;LastName&gt;xxx&lt;/LastName&gt;</b>
        <b>&lt;FirstName&gt;xxx&lt;/FirstName&gt;</b>
        &lt;UserName&gt;xxx&lt;/UserName&gt;
        &lt;Password&gt;xxx&lt;/Password&gt;
        &lt;AuthSource&gt;<?php echo implode('/',$defined_auth_sources); ?>&lt;/AuthSource&gt;
        <b>&lt;Email&gt;xxx&lt;/Email&gt;</b>
        &lt;OfficialCode&gt;xxx&lt;/OfficialCode&gt;
        &lt;PhoneNumber&gt;xxx&lt;/PhoneNumber&gt;
        &lt;Status&gt;user/teacher/drh&lt;/Status&gt;         <?php if ($result_xml!='') { echo '<br /><font style="color:red;">',$result_xml;echo '</font>';} ?>        
        &lt;Courses&gt;xxx1|xxx2|xxx3&lt;/Courses&gt;
        &lt;ClassName&gt;class 1&lt;/ClassName&gt;        
    &lt;/Contact&gt;
&lt;/Contacts&gt;
</pre>
</blockquote>

<?php


/*
==============================================================================
		FOOTER
==============================================================================
*/
Display :: display_footer();
