/**
* Given the task typed by a user (i.e.: pay electricity bill %%27-05-2009 %%money),
* it returns an array with the information embedded in the task description:
* _ the first element is null, or the id or the inbox or the todo list of the user
* _ an array of context Ids
* _ an array of potential due date expressions (thay could actual be illegal wrong contexts)
* _ null or a PcTime object as potential due time
*
* The task description passed as input is cleared from the shortcuts
*
* @param string $taskDescription (passed by reference) the task text to evaluate and parse
* @return array
*/
public function extractInfoFromTaskDescription(&$taskDescription)
{
preg_match('!@([0-9]+)([\\.:]([0-9]+))? ?([ap]m\\b)?!i', $taskDescription, $matches);
$potentialDueTime = null;
if (count($matches)) {
$potentialDueTime = new PcTime();
$potentialDueTime->createFromParts(isset($matches[1]) ? $matches[1] : null, isset($matches[3]) ? $matches[3] : 0, isset($matches[4]) ? trim($matches[4]) : '');
// removing the shortcut from the description
$taskDescription = str_replace($matches[0], '', $taskDescription);
}
$taskDescriptionParts = explode('%%', $taskDescription);
$taskDescription = $taskDescriptionParts[0];
$potentialInfo = array_slice($taskDescriptionParts, 1);
// the first part is the actual
// task description
$existingContextsLowercase = PcUserPeer::getLoggedInUser()->getContextsArray(true);
$listId = null;
$contextIds = array();
$potentialDueDates = array();
foreach ($potentialInfo as $info) {
$info = trim($info);
// searching for listId
if (strtolower($info) == 'inbox') {
$listId = PcUserPeer::getLoggedInUser()->getInbox()->getId();
} else {
if (strtolower($info) == 'todo') {
$listId = PcUserPeer::getLoggedInUser()->getTodo()->getId();
} else {
if (in_array(strtolower($info), $existingContextsLowercase)) {
$contextIds[] = array_search(strtolower($info), $existingContextsLowercase);
} else {
$potentialDueDates[] = strtolower($info);
}
}
}
}
return array($listId, $contextIds, $potentialDueDates, $potentialDueTime);
}
