2 // +----------------------------------------------------------------------+
3 // | Anuko Time Tracker
4 // +----------------------------------------------------------------------+
5 // | Copyright (c) Anuko International Ltd. (https://www.anuko.com)
6 // +----------------------------------------------------------------------+
7 // | LIBERAL FREEWARE LICENSE: This source code document may be used
8 // | by anyone for any purpose, and freely redistributed alone or in
9 // | combination with other software, provided that the license is obeyed.
11 // | There are only two ways to violate the license:
13 // | 1. To redistribute this code in source form, with the copyright
14 // | notice or license removed or altered. (Distributing in compiled
15 // | forms without embedded copyright notices is permitted).
17 // | 2. To redistribute modified versions of this code in *any* form
18 // | that bears insufficient indications that the modifications are
19 // | not the work of the original author(s).
21 // | This license applies to this document only, not any other software
22 // | that it may be combined with.
24 // +----------------------------------------------------------------------+
26 // | https://www.anuko.com/time_tracker/credits.htm
27 // +----------------------------------------------------------------------+
29 // ttGroupExportHelper - this class is used to write data for a single group
30 // to a file. When group contains other groups, it reuses itself recursively.
31 class ttGroupExportHelper {
33 var $group_id = null; // Group we are exporting.
34 var $file = null; // File to write to.
35 var $indentation = null; // A string consisting of a number of spaces.
36 var $subgroups = array(); // Immediate subgroups.
38 // The following arrays are maps between entity ids in the file versus the database.
39 // We write to the file sequentially (1,2,3...) while in the database the entities have different ids.
40 var $userMap = array();
41 var $roleMap = array();
42 var $taskMap = array();
43 var $projectMap = array();
44 var $clientMap = array();
45 var $invoiceMap = array();
46 var $logMap = array();
47 var $customFieldMap = array();
48 var $customFieldOptionMap = array();
49 var $favReportMap = array();
52 function __construct($group_id, $file, $indentation) {
55 $this->group_id = $group_id;
57 $this->indentation = $indentation;
59 // Build a list of subgroups.
60 $mdb2 = getConnection();
61 $sql = "select id from tt_groups".
62 " where status = 1 and parent_id = $this->group_id and org_id = $user->org_id";
63 $res = $mdb2->query($sql);
64 if (!is_a($res, 'PEAR_Error')) {
65 while ($val = $res->fetchRow()) {
66 $this->subgroups[] = $val;
71 // getGroupAttrs obtains group attributes for export.
72 private function getGroupAttrs() {
74 $mdb2 = getConnection();
76 $sql = "select * from tt_groups".
77 " where status = 1 and id = $this->group_id and org_id = $user->org_id";
78 $res = $mdb2->query($sql);
79 if (!is_a($res, 'PEAR_Error')) {
80 $val = $res->fetchRow();
85 // getRecordsFromTable - obtains all fields from a given table for a group.
86 function getRecordsFromTable($table_name) {
88 $mdb2 = getConnection();
91 $sql = "select * from $table_name where group_id = $this->group_id and org_id = $user->org_id";
92 $res = $mdb2->query($sql);
94 if (!is_a($res, 'PEAR_Error')) {
95 while ($val = $res->fetchRow()) {
103 // writeData writes group data into file.
104 function writeData() {
107 $group = $this->getGroupAttrs();
108 $group_part = "<group name=\"".htmlspecialchars($group['name'])."\"";
109 $group_part .= " currency=\"".htmlspecialchars($group['currency'])."\"";
110 $group_part .= " decimal_mark=\"".$group['decimal_mark']."\"";
111 $group_part .= " lang=\"".$group['lang']."\"";
112 $group_part .= " date_format=\"".$group['date_format']."\"";
113 $group_part .= " time_format=\"".$group['time_format']."\"";
114 $group_part .= " week_start=\"".$group['week_start']."\"";
115 $group_part .= " tracking_mode=\"".$group['tracking_mode']."\"";
116 $group_part .= " project_required=\"".$group['project_required']."\"";
117 $group_part .= " task_required=\"".$group['task_required']."\"";
118 $group_part .= " record_type=\"".$group['record_type']."\"";
119 $group_part .= " bcc_email=\"".$group['bcc_email']."\"";
120 $group_part .= " allow_ip=\"".$group['allow_ip']."\"";
121 $group_part .= " password_complexity=\"".$group['password_complexity']."\"";
122 $group_part .= " plugins=\"".$group['plugins']."\"";
123 $group_part .= " lock_spec=\"".$group['lock_spec']."\"";
124 $group_part .= " workday_minutes=\"".$group['workday_minutes']."\"";
125 $group_part .= " custom_logo=\"".$group['custom_logo']."\"";
126 $group_part .= " config=\"".$group['config']."\"";
127 $group_part .= ">\n";
130 fwrite($this->file, $this->indentation.$group_part);
135 $users = $this->getRecordsFromTable('tt_users');
136 foreach ($users as $key=>$user_item)
137 $this->userMap[$user_item['id']] = $key + 1;
140 $roles = $this->getRecordsFromTable('tt_roles');
141 foreach ($roles as $key=>$role_item)
142 $this->roleMap[$role_item['id']] = $key + 1;
145 $tasks = $this->getRecordsFromTable('tt_tasks');
146 foreach ($tasks as $key=>$task_item)
147 $this->taskMap[$task_item['id']] = $key + 1;
149 // Prepare project map.
150 $projects = $this->getRecordsFromTable('tt_projects');
151 foreach ($projects as $key=>$project_item)
152 $this->projectMap[$project_item['id']] = $key + 1;
154 // Prepare client map.
155 $clients = $this->getRecordsFromTable('tt_clients');
156 foreach ($clients as $key=>$client_item)
157 $this->clientMap[$client_item['id']] = $key + 1;
159 // Prepare invoice map.
160 $invoices = ttTeamHelper::getAllInvoices();
161 foreach ($invoices as $key=>$invoice_item)
162 $this->invoiceMap[$invoice_item['id']] = $key + 1;
164 // Prepare custom fields map.
165 $custom_fields = ttTeamHelper::getAllCustomFields($this->group_id);
166 foreach ($custom_fields as $key=>$custom_field)
167 $this->customFieldMap[$custom_field['id']] = $key + 1;
169 // Prepare custom field options map.
170 $custom_field_options = ttTeamHelper::getAllCustomFieldOptions($this->group_id);
171 foreach ($custom_field_options as $key=>$option)
172 $this->customFieldOptionMap[$option['id']] = $key + 1;
174 // Prepare favorite report map.
175 $fav_reports = $this->getRecordsFromTable('tt_fav_reports');
176 foreach ($fav_reports as $key=>$fav_report)
177 $this->favReportMap[$fav_report['id']] = $key + 1;
180 fwrite($this->file, $this->indentation." <roles>\n");
181 foreach ($roles as $role) {
182 $role_part = $this->indentation.' '."<role id=\"".$this->roleMap[$role['id']]."\"";
183 $role_part .= " name=\"".htmlspecialchars($role['name'])."\"";
184 $role_part .= " description=\"".htmlspecialchars($role['description'])."\"";
185 $role_part .= " rank=\"".$role['rank']."\"";
186 $role_part .= " rights=\"".htmlspecialchars($role['rights'])."\"";
187 $role_part .= " status=\"".$role['status']."\"";
188 $role_part .= "></role>\n";
189 fwrite($this->file, $role_part);
191 fwrite($this->file, $this->indentation." </roles>\n");
196 fwrite($this->file, $this->indentation." <tasks>\n");
197 foreach ($tasks as $task) {
198 $task_part = $this->indentation.' '."<task id=\"".$this->taskMap[$task['id']]."\"";
199 $task_part .= " name=\"".htmlspecialchars($task['name'])."\"";
200 $task_part .= " description=\"".htmlspecialchars($task['description'])."\"";
201 $task_part .= " status=\"".$task['status']."\"";
202 $task_part .= "></task>\n";
203 fwrite($this->file, $task_part);
205 fwrite($this->file, $this->indentation." </tasks>\n");
210 fwrite($this->file, $this->indentation." <projects>\n");
211 foreach ($projects as $project_item) {
213 if($project_item['tasks']){
214 $tasks = explode(',', $project_item['tasks']);
215 $tasks_mapped = array();
216 foreach ($tasks as $item)
217 $tasks_mapped[] = $this->taskMap[$item];
218 $tasks_str = implode(',', $tasks_mapped);
220 $project_part = $this->indentation.' '."<project id=\"".$this->projectMap[$project_item['id']]."\"";
221 $project_part .= " name=\"".htmlspecialchars($project_item['name'])."\"";
222 $project_part .= " description=\"".htmlspecialchars($project_item['description'])."\"";
223 $project_part .= " tasks=\"".$tasks_str."\"";
224 $project_part .= " status=\"".$project_item['status']."\"";
225 $project_part .= "></project>\n";
226 fwrite($this->file, $project_part);
228 fwrite($this->file, $this->indentation." </projects>\n");
230 unset($project_part);
233 fwrite($this->file, $this->indentation." <clients>\n");
234 foreach ($clients as $client_item) {
235 if($client_item['projects']){
236 $projects_db = explode(',', $client_item['projects']);
237 $projects_mapped = array();
238 foreach ($projects_db as $item)
239 $projects_mapped[] = $this->projectMap[$item];
240 $projects_str = implode(',', $projects_mapped);
242 $client_part = $this->indentation.' '."<client id=\"".$this->clientMap[$client_item['id']]."\"";
243 $client_part .= " name=\"".htmlspecialchars($client_item['name'])."\"";
244 $client_part .= " address=\"".htmlspecialchars($client_item['address'])."\"";
245 $client_part .= " tax=\"".$client_item['tax']."\"";
246 $client_part .= " projects=\"".$projects_str."\"";
247 $client_part .= " status=\"".$client_item['status']."\"";
248 $client_part .= "></client>\n";
249 fwrite($this->file, $client_part);
251 fwrite($this->file, $this->indentation." </clients>\n");
256 fwrite($this->file, $this->indentation." <users>\n");
257 foreach ($users as $user_item) {
258 $role_id = $user_item['rank'] == 512 ? 0 : $this->roleMap[$user_item['role_id']]; // Special role_id 0 (not null) for top manager.
259 $user_part = $this->indentation.' '."<user id=\"".$this->userMap[$user_item['id']]."\"";
260 $user_part .= " name=\"".htmlspecialchars($user_item['name'])."\"";
261 $user_part .= " login=\"".htmlspecialchars($user_item['login'])."\"";
262 $user_part .= " password=\"".$user_item['password']."\"";
263 $user_part .= " role_id=\"".$role_id."\"";
264 $user_part .= " client_id=\"".$this->clientMap[$user_item['client_id']]."\"";
265 $user_part .= " rate=\"".$user_item['rate']."\"";
266 $user_part .= " email=\"".$user_item['email']."\"";
267 $user_part .= " status=\"".$user_item['status']."\"";
268 $user_part .= "></user>\n";
269 fwrite($this->file, $user_part);
271 fwrite($this->file, $this->indentation." </users>\n");
275 // Write user to project binds.
276 fwrite($this->file, $this->indentation." <user_project_binds>\n");
277 $user_binds = ttTeamHelper::getUserToProjectBinds($this->group_id);
278 foreach ($user_binds as $bind) {
279 $user_id = $this->userMap[$bind['user_id']];
280 $project_id = $this->projectMap[$bind['project_id']];
281 $bind_part = $this->indentation.' '."<user_project_bind user_id=\"".$user_id."\"";
282 $bind_part .= " project_id=\"".$project_id."\"";
283 $bind_part .= " rate=\"".$bind['rate']."\"";
284 $bind_part .= " status=\"".$bind['status']."\"";
285 $bind_part .= "></user_project_bind>\n";
286 fwrite($this->file, $bind_part);
288 fwrite($this->file, $this->indentation." </user_project_binds>\n");
293 fwrite($this->file, $this->indentation." <invoices>\n");
294 foreach ($invoices as $invoice_item) {
295 $invoice_part = $this->indentation.' '."<invoice id=\"".$this->invoiceMap[$invoice_item['id']]."\"";
296 $invoice_part .= " name=\"".htmlspecialchars($invoice_item['name'])."\"";
297 $invoice_part .= " date=\"".$invoice_item['date']."\"";
298 $invoice_part .= " client_id=\"".$this->clientMap[$invoice_item['client_id']]."\"";
299 $invoice_part .= " status=\"".$invoice_item['status']."\"";
300 $invoice_part .= "></invoice>\n";
301 fwrite($this->file, $invoice_part);
303 fwrite($this->file, $this->indentation." </invoices>\n");
305 unset($invoice_part);
307 // Write time log entries and build logMap at the same time.
308 fwrite($this->file, $this->indentation." <log>\n");
310 foreach ($this->userMap as $key => $value) {
312 $records = ttTimeHelper::getAllRecords($user_id);
313 foreach ($records as $record) {
315 $this->logMap[$record['id']] = $key;
316 $log_part = $this->indentation.' '."<log_item id=\"$key\"";
317 $log_part .= " user_id=\"".$this->userMap[$record['user_id']]."\"";
318 $log_part .= " date=\"".$record['date']."\"";
319 $log_part .= " start=\"".$record['start']."\"";
320 $log_part .= " finish=\"".$record['finish']."\"";
321 $log_part .= " duration=\"".($record['start']?"":$record['duration'])."\"";
322 $log_part .= " client_id=\"".$this->clientMap[$record['client_id']]."\"";
323 $log_part .= " project_id=\"".$this->projectMap[$record['project_id']]."\"";
324 $log_part .= " task_id=\"".$this->taskMap[$record['task_id']]."\"";
325 $log_part .= " invoice_id=\"".$this->invoiceMap[$record['invoice_id']]."\"";
326 $log_part .= " comment=\"".htmlspecialchars($record['comment'])."\"";
327 $log_part .= " billable=\"".$record['billable']."\"";
328 $log_part .= " paid=\"".$record['paid']."\"";
329 $log_part .= " status=\"".$record['status']."\"";
330 $log_part .= "></log_item>\n";
331 fwrite($this->file, $log_part);
334 fwrite($this->file, $this->indentation." </log>\n");
338 // Write custom fields.
339 fwrite($this->file, $this->indentation." <custom_fields>\n");
340 foreach ($custom_fields as $custom_field) {
341 $custom_field_part = $this->indentation.' '."<custom_field id=\"".$this->customFieldMap[$custom_field['id']]."\"";
342 $custom_field_part .= " type=\"".$custom_field['type']."\"";
343 $custom_field_part .= " label=\"".htmlspecialchars($custom_field['label'])."\"";
344 $custom_field_part .= " required=\"".$custom_field['required']."\"";
345 $custom_field_part .= " status=\"".$custom_field['status']."\"";
346 $custom_field_part .= "></custom_field>\n";
347 fwrite($this->file, $custom_field_part);
349 fwrite($this->file, $this->indentation." </custom_fields>\n");
350 unset($custom_fields);
351 unset($custom_field_part);
353 // Write custom field options.
354 fwrite($this->file, $this->indentation." <custom_field_options>\n");
355 foreach ($custom_field_options as $option) {
356 $custom_field_option_part = $this->indentation.' '."<custom_field_option id=\"".$this->customFieldOptionMap[$option['id']]."\"";
357 $custom_field_option_part .= " field_id=\"".$this->customFieldMap[$option['field_id']]."\"";
358 $custom_field_option_part .= " value=\"".htmlspecialchars($option['value'])."\"";
359 $custom_field_option_part .= "></custom_field_option>\n";
360 fwrite($this->file, $custom_field_option_part);
362 fwrite($this->file, $this->indentation." </custom_field_options>\n");
363 unset($custom_field_options);
364 unset($custom_field_option_part);
366 // Write custom field log.
367 $custom_field_log = ttTeamHelper::getCustomFieldLog($this->group_id);
368 fwrite($this->file, $this->indentation." <custom_field_log>\n");
369 foreach ($custom_field_log as $entry) {
370 $custom_field_log_part = $this->indentation.' '."<custom_field_log_entry log_id=\"".$this->logMap[$entry['log_id']]."\"";
371 $custom_field_log_part .= " field_id=\"".$this->customFieldMap[$entry['field_id']]."\"";
372 $custom_field_log_part .= " option_id=\"".$this->customFieldOptionMap[$entry['option_id']]."\"";
373 $custom_field_log_part .= " value=\"".htmlspecialchars($entry['value'])."\"";
374 $custom_field_log_part .= " status=\"".$entry['status']."\"";
375 $custom_field_log_part .= "></custom_field_log_entry>\n";
376 fwrite($this->file, $custom_field_log_part);
378 fwrite($this->file, $this->indentation." </custom_field_log>\n");
379 unset($custom_field_log);
380 unset($custom_field_log_part);
382 // Write expense items.
383 $expense_items = ttTeamHelper::getExpenseItems($this->group_id);
384 fwrite($this->file, $this->indentation." <expense_items>\n");
385 foreach ($expense_items as $expense_item) {
386 $expense_item_part = $this->indentation.' '."<expense_item date=\"".$expense_item['date']."\"";
387 $expense_item_part .= " user_id=\"".$this->userMap[$expense_item['user_id']]."\"";
388 $expense_item_part .= " client_id=\"".$this->clientMap[$expense_item['client_id']]."\"";
389 $expense_item_part .= " project_id=\"".$this->projectMap[$expense_item['project_id']]."\"";
390 $expense_item_part .= " name=\"".htmlspecialchars($expense_item['name'])."\"";
391 $expense_item_part .= " cost=\"".$expense_item['cost']."\"";
392 $expense_item_part .= " invoice_id=\"".$this->invoiceMap[$expense_item['invoice_id']]."\"";
393 $expense_item_part .= " paid=\"".$expense_item['paid']."\"";
394 $expense_item_part .= " status=\"".$expense_item['status']."\"";
395 $expense_item_part .= "></expense_item>\n";
396 fwrite($this->file, $expense_item_part);
398 fwrite($this->file, $this->indentation." </expense_items>\n");
399 unset($expense_items);
400 unset($expense_item_part);
402 // Write predefined expenses.
403 $predefined_expenses = $this->getRecordsFromTable('tt_predefined_expenses');
404 fwrite($this->file, $this->indentation." <predefined_expenses>\n");
405 foreach ($predefined_expenses as $predefined_expense) {
406 $predefined_expense_part = $this->indentation.' '."<predefined_expense name=\"".htmlspecialchars($predefined_expense['name'])."\"";
407 $predefined_expense_part .= " cost=\"".$predefined_expense['cost']."\"";
408 $predefined_expense_part .= "></predefined_expense>\n";
409 fwrite($this->file, $predefined_expense_part);
411 fwrite($this->file, $this->indentation." </predefined_expenses>\n");
412 unset($predefined_expenses);
413 unset($predefined_expense_part);
415 // Write monthly quotas.
416 $quotas = ttTeamHelper::getMonthlyQuotas($this->group_id);
417 fwrite($this->file, $this->indentation." <monthly_quotas>\n");
418 foreach ($quotas as $quota) {
419 $quota_part = $this->indentation.' '."<monthly_quota year=\"".$quota['year']."\"";
420 $quota_part .= " month=\"".$quota['month']."\"";
421 $quota_part .= " minutes=\"".$quota['minutes']."\"";
422 $quota_part .= "></monthly_quota>\n";
423 fwrite($this->file, $quota_part);
425 fwrite($this->file, $this->indentation." </monthly_quotas>\n");
429 // Write fav reports.
430 fwrite($this->file, $this->indentation." <fav_reports>\n");
431 foreach ($fav_reports as $fav_report) {
433 if (strlen($fav_report['users']) > 0) {
434 $arr = explode(',', $fav_report['users']);
435 foreach ($arr as $k=>$v) {
436 if (array_key_exists($arr[$k], $this->userMap))
437 $user_list .= (strlen($user_list) == 0? '' : ',').$this->userMap[$v];
440 $fav_report_part = $this->indentation.' '."<fav_report id=\"".$this->favReportMap[$fav_report['id']]."\"";
441 $fav_report_part .= " user_id=\"".$this->userMap[$fav_report['user_id']]."\"";
442 $fav_report_part .= " name=\"".htmlspecialchars($fav_report['name'])."\"";
443 $fav_report_part .= " client_id=\"".$this->clientMap[$fav_report['client_id']]."\"";
444 $fav_report_part .= " cf_1_option_id=\"".$this->customFieldOptionMap[$fav_report['cf_1_option_id']]."\"";
445 $fav_report_part .= " project_id=\"".$this->projectMap[$fav_report['project_id']]."\"";
446 $fav_report_part .= " task_id=\"".$this->taskMap[$fav_report['task_id']]."\"";
447 $fav_report_part .= " billable=\"".$fav_report['billable']."\"";
448 $fav_report_part .= " users=\"".$user_list."\"";
449 $fav_report_part .= " period=\"".$fav_report['period']."\"";
450 $fav_report_part .= " period_start=\"".$fav_report['period_start']."\"";
451 $fav_report_part .= " period_end=\"".$fav_report['period_end']."\"";
452 $fav_report_part .= " show_client=\"".$fav_report['show_client']."\"";
453 $fav_report_part .= " show_invoice=\"".$fav_report['show_invoice']."\"";
454 $fav_report_part .= " show_paid=\"".$fav_report['show_paid']."\"";
455 $fav_report_part .= " show_ip=\"".$fav_report['show_ip']."\"";
456 $fav_report_part .= " show_project=\"".$fav_report['show_project']."\"";
457 $fav_report_part .= " show_start=\"".$fav_report['show_start']."\"";
458 $fav_report_part .= " show_duration=\"".$fav_report['show_duration']."\"";
459 $fav_report_part .= " show_cost=\"".$fav_report['show_cost']."\"";
460 $fav_report_part .= " show_task=\"".$fav_report['show_task']."\"";
461 $fav_report_part .= " show_end=\"".$fav_report['show_end']."\"";
462 $fav_report_part .= " show_note=\"".$fav_report['show_note']."\"";
463 $fav_report_part .= " show_custom_field_1=\"".$fav_report['show_custom_field_1']."\"";
464 $fav_report_part .= " show_work_units=\"".$fav_report['show_work_units']."\"";
465 $fav_report_part .= " group_by1=\"".$fav_report['group_by1']."\"";
466 $fav_report_part .= " group_by2=\"".$fav_report['group_by2']."\"";
467 $fav_report_part .= " group_by3=\"".$fav_report['group_by3']."\"";
468 $fav_report_part .= " show_totals_only=\"".$fav_report['show_totals_only']."\"";
469 $fav_report_part .= "></fav_report>\n";
470 fwrite($this->file, $fav_report_part);
472 fwrite($this->file, $this->indentation." </fav_reports>\n");
474 unset($fav_report_part);
476 // Write notifications.
477 $notifications = $this->getRecordsFromTable('tt_cron');
478 fwrite($this->file, $this->indentation." <notifications>\n");
479 foreach ($notifications as $notification) {
480 $notification_part = $this->indentation.' '."<notification cron_spec=\"".$notification['cron_spec']."\"";
481 $notification_part .= " last=\"".$notification['last']."\"";
482 $notification_part .= " next=\"".$notification['next']."\"";
483 $notification_part .= " report_id=\"".$this->favReportMap[$notification['report_id']]."\"";
484 $notification_part .= " email=\"".htmlspecialchars($notification['email'])."\"";
485 $notification_part .= " cc=\"".htmlspecialchars($notification['cc'])."\"";
486 $notification_part .= " subject=\"".htmlspecialchars($notification['subject'])."\"";
487 $notification_part .= " report_condition=\"".htmlspecialchars($notification['report_condition'])."\"";
488 $notification_part .= " status=\"".$notification['status']."\"";
489 $notification_part .= "></notification>\n";
490 fwrite($this->file, $notification_part);
492 fwrite($this->file, $this->indentation." </notifications>\n");
493 unset($notifications);
494 unset($notification_part);
496 // Write user config parameters.
497 $user_params = $this->getRecordsFromTable('tt_config');
498 fwrite($this->file, $this->indentation." <user_params>\n");
499 foreach ($user_params as $user_param) {
500 $user_param_part = $this->indentation.' '."<user_param user_id=\"".$this->userMap[$user_param['user_id']]."\"";
501 $user_param_part .= " param_name=\"".htmlspecialchars($user_param['param_name'])."\"";
502 $user_param_part .= " param_value=\"".htmlspecialchars($user_param['param_value'])."\"";
503 $user_param_part .= "></user_param>\n";
504 fwrite($this->file, $user_param_part);
506 fwrite($this->file, $this->indentation." </user_params>\n");
508 unset($user_param_part);
510 // We are mostly done with writing this group data, destroy all maps.
511 unset($this->roleMap);
512 unset($this->userMap);
513 unset($this->taskMap);
514 unset($this->projectMap);
515 unset($this->clientMap);
516 unset($this->invoiceMap);
517 unset($this->logMap);
518 unset($this->customFieldMap);
519 unset($this->customFieldOptionMap);
521 // Call self recursively for all subgroups.
522 foreach ($this->subgroups as $subgroup) {
523 $subgroup_helper = new ttGroupExportHelper($subgroup['id'], $this->file, $this->indentation.' ');
524 $subgroup_helper->writeData();
526 unset($this->subgroups);
528 fwrite($this->file, $this->indentation."</group>\n");