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<?php
/**
* Checks the fieldmap after survey structure modifications
* and compares them to the survey table and makes changes.
* Returns true if successful and false if not
* @param $surveyid - The Survey Identifier
* @return bool
*/
function surveyFixColumns($surveyid)
{
global $dbprefix, $connect;
// Check and fix duplicate column names
surveyFixDuplicateColumns($surveyid);
// Get latest fieldmap
$fieldmap=createFieldMap($surveyid);
// Find any fields that do not exist
$fieldlist = array();
foreach($fieldmap as $fielddata)
{
$fieldlist[]=$fielddata['fieldname'];
}
$dict = NewDataDictionary($connect);
$sqlfields = $dict->MetaColumns("{$dbprefix}survey_{$surveyid}");
$sqllist = array();
foreach ($sqlfields as $sqlfield)
{
$sqllist[]=$sqlfield->name;
}
$missingFields = array_diff($fieldlist, $sqllist);
$removedFields = array_diff($sqllist, $fieldlist);
die(print_r($missingFields).print_r($removedFields));
// Find any fields that have been removed
// Add fields that need to be added
// Remove fields that need to be removed
}
/**
* Checks for duplicate column names and fixes them
* Returns true if a correction has been made and false if not
*
* @param $surveyid - The Survey Identifier
* @return bool
*/
function surveyFixDuplicateColumns($surveyid)
{
list ($duplicates, $fieldmap) = surveyCheckUniqueColumns($surveyid);
if (!empty($duplicates))
{
foreach ($duplicates as $dup)
{
$badquestion=arraySearchByKey($dup, $fieldmap, "fieldname", 1);
surveyFixQuestionNumbering($badquestion['qid']);
}
return true;
}
return false;
}
/**
* Checks to see if any columns being created for the survey will
* conflict with field names.
*
* @param $surveyid - The Survey Identifier
* @return bool
*/
function surveyCheckUniqueColumns($surveyid)
{
//CHECK THAT ALL THE CREATED FIELDS WILL BE UNIQUE
$fieldmap=createFieldMap($surveyid, "full");
$duplicates = array();
if (isset($fieldmap))
{
foreach($fieldmap as $fielddata)
{
$fieldlist[]=$fielddata['fieldname'];
}
$fieldlist=array_reverse($fieldlist); //let's always change the later duplicate, not the earlier one
}
$checkKeysUniqueComparison = create_function('$value','if ($value > 1) return true;');
@$duplicates = array_keys (array_filter (array_count_values($fieldlist), $checkKeysUniqueComparison));
// Return the fieldmap as well, so we dont have to generate this again for fixing
return array($duplicates, $fieldmap);
}
/**
* Fixes the question numbering of a single question inorder to
* prevent column name conflicts
*
* @param none
* @return bool
*/
function surveyFixQuestionNumbering($qid)
{
global $dbprefix, $connect;
//Fix a question id - requires renumbering a question
LimeExpressionManager::RevertUpgradeConditionsToRelevance(NULL,$qid);
$oldqid = $_GET['fixnumbering'];
$query = "SELECT qid FROM {$dbprefix}questions ORDER BY qid DESC";
$result = db_select_limit_assoc($query, 1) or safe_die($query."<br />".$connect->ErrorMsg());
while ($row=$result->FetchRow())
{
$lastqid=$row['qid'];
}
$newqid=$lastqid+1;
$query = "UPDATE {$dbprefix}questions SET qid=$newqid WHERE qid=$oldqid";
$result = $connect->Execute($query) or safe_die($query."<br />".$connect->ErrorMsg());
// Update subquestions
$query = "UPDATE {$dbprefix}questions SET parent_qid=$newqid WHERE parent_qid=$oldqid";
$result = $connect->Execute($query) or safe_die($query."<br />".$connect->ErrorMsg());
//Update conditions.. firstly conditions FOR this question
$query = "UPDATE {$dbprefix}conditions SET qid=$newqid WHERE qid=$oldqid";
$result = $connect->Execute($query) or safe_die($query."<br />".$connect->ErrorMsg());
//Now conditions based upon this question
$query = "SELECT cqid, cfieldname FROM {$dbprefix}conditions WHERE cqid=$oldqid";
$result = db_execute_assoc($query) or safe_die($query."<br />".$connect->ErrorMsg());
while ($row=$result->FetchRow())
{
$switcher[]=array("cqid"=>$row['cqid'], "cfieldname"=>$row['cfieldname']);
}
if (isset($switcher))
{
foreach ($switcher as $switch)
{
$query = "UPDATE {$dbprefix}conditions
SET cqid=$newqid,
cfieldname='".str_replace("X".$oldqid, "X".$newqid, $switch['cfieldname'])."'
WHERE cqid=$oldqid";
$result = $connect->Execute($query) or safe_die($query."<br />".$connect->ErrorMsg());
}
}
//Now question_attributes
$query = "UPDATE {$dbprefix}question_attributes SET qid=$newqid WHERE qid=$oldqid";
$result = $connect->Execute($query) or safe_die($query."<br />".$connect->ErrorMsg());
//Now answers
$query = "UPDATE {$dbprefix}answers SET qid=$newqid WHERE qid=$oldqid";
$result = $connect->Execute($query) or safe_die($query."<br />".$connect->ErrorMsg());
LimeExpressionManager::UpgradeConditionsToRelevance(NULL,$qid);
}
/**
* Check the structure of the survey to identify any problems with groups, questions, etc
* Returns an array containing error information
* @param surveyid
* @return string
*/
function surveyCheckStructure($surveyid)
{
global $dbprefix, $connect;
$baselang = GetBaseLanguageFromSurveyID($surveyid);
$failedcheck = array();
// Check for empty groups
$groupquery = "SELECT g.gid,g.group_name,count(q.qid) as count from {$dbprefix}questions as q RIGHT JOIN {$dbprefix}groups as g ON q.gid=g.gid WHERE g.sid=$surveyid AND g.language='$baselang' AND q.language='$baselang' group by g.gid,g.group_name;";
$groupresult=db_execute_assoc($groupquery) or safe_die($groupquery."<br />".$connect->ErrorMsg());
while ($row=$groupresult->FetchRow())
{
if ($row['count'] == 0)
{
$failedcheck[]=array($row['gid'], $row['group_name'], ": ".$clang->gT("This group does not contain any question(s)."));
}
}
//CHECK TO MAKE SURE ALL QUESTION TYPES THAT REQUIRE ANSWERS HAVE ACTUALLY GOT ANSWERS
//THESE QUESTION TYPES ARE:
// # "L" -> LIST
// # "O" -> LIST WITH COMMENT
// # "M" -> Multiple choice
// # "P" -> Multiple choice with comments
// # "A", "B", "C", "E", "F", "H", "^" -> Various Array Types
// # "R" -> RANKING
// # "U" -> FILE CSV MORE
// # "I" -> LANGUAGE SWITCH
// # ":" -> Array Multi Flexi Numbers
// # ";" -> Array Multi Flexi Text
// # "1" -> MULTI SCALE
$chkquery = "SELECT qid, question, gid, type FROM {$dbprefix}questions WHERE sid={$surveyid} and parent_qid=0";
$chkresult = db_execute_assoc($chkquery) or safe_die ("Couldn't get list of questions<br />$chkquery<br />".$connect->ErrorMsg());
while ($chkrow = $chkresult->FetchRow())
{
if ($qtypes[$chkrow['type']]['subquestions']>0)
{
$chaquery = "SELECT * FROM {$dbprefix}questions WHERE parent_qid = {$chkrow['qid']} ORDER BY question_order";
$charesult=$connect->Execute($chaquery);
$chacount=$charesult->RecordCount();
if ($chacount == 0)
{
$failedcheck[]=array($chkrow['qid'], $chkrow['question'], ": ".$clang->gT("This question is a subquestion type question but has no configured subquestions."), $chkrow['gid']);
}
}
if ($qtypes[$chkrow['type']]['answerscales']>0)
{
$chaquery = "SELECT * FROM {$dbprefix}answers WHERE qid = {$chkrow['qid']} ORDER BY sortorder, answer";
$charesult=$connect->Execute($chaquery);
$chacount=$charesult->RecordCount();
if ($chacount == 0)
{
$failedcheck[]=array($chkrow['qid'], $chkrow['question'], ": ".$clang->gT("This question is a multiple answer type question but has no answers."), $chkrow['gid']);
}
}
}
//NOW CHECK THAT ALL QUESTIONS HAVE A 'QUESTION TYPE' FIELD SET
$chkquery = "SELECT qid, question, gid FROM {$dbprefix}questions WHERE sid={$_GET['sid']} AND type = ''";
$chkresult = db_execute_assoc($chkquery) or safe_die ("Couldn't check questions for missing types<br />$chkquery<br />".$connect->ErrorMsg());
while ($chkrow = $chkresult->FetchRow())
{
$failedcheck[]=array($chkrow['qid'], $chkrow['question'], ": ".$clang->gT("This question does not have a question 'type' set."), $chkrow['gid']);
}
//ChECK THAT certain array question types have answers set
$chkquery = "SELECT q.qid, question, gid FROM {$dbprefix}questions as q WHERE (select count(*) from {$dbprefix}answers as a where a.qid=q.qid and scale_id=0)=0 and sid={$_GET['sid']} AND type IN ('F', 'H', 'W', 'Z', '1')";
$chkresult = db_execute_assoc($chkquery) or safe_die ("Couldn't check questions for missing answers<br />$chkquery<br />".$connect->ErrorMsg());
while($chkrow = $chkresult->FetchRow())
{
$failedcheck[]=array($chkrow['qid'], $chkrow['question'], ": ".$clang->gT("This question requires answers, but none are set."), $chkrow['gid']);
} // while
//CHECK THAT DUAL Array has answers set
$chkquery = "SELECT q.qid, question, gid FROM {$dbprefix}questions as q WHERE (select count(*) from {$dbprefix}answers as a where a.qid=q.qid and scale_id=1)=0 and sid={$_GET['sid']} AND type='1'";
$chkresult = db_execute_assoc($chkquery) or safe_die ("Couldn't check questions for missing 2nd answer set<br />$chkquery<br />".$connect->ErrorMsg());
while($chkrow = $chkresult->FetchRow())
{
$failedcheck[]=array($chkrow['qid'], $chkrow['question'], ": ".$clang->gT("This question requires a second answer set but none is set."), $chkrow['gid']);
} // while
//CHECK THAT ALL CONDITIONS SET ARE FOR QUESTIONS THAT PRECEED THE QUESTION CONDITION
//A: Make an array of all the qids in order of appearance
// $qorderquery="SELECT * FROM {$dbprefix}questions, {$dbprefix}groups WHERE {$dbprefix}questions.gid={$dbprefix}groups.gid AND {$dbprefix}questions.sid={$_GET['sid']} ORDER BY {$dbprefix}groups.sortorder, {$dbprefix}questions.title";
// $qorderresult=$connect->Execute($qorderquery) or safe_die("Couldn't generate a list of questions in order<br />$qorderquery<br />".$connect->ErrorMsg());
// $qordercount=$qorderresult->RecordCount();
// $c=0;
// while ($qorderrow=$qorderresult->FetchRow())
// {
// $qidorder[]=array($c, $qorderrow['qid']);
// $c++;
// }
//TO AVOID NATURAL SORT ORDER ISSUES, FIRST GET ALL QUESTIONS IN NATURAL SORT ORDER, AND FIND OUT WHICH NUMBER IN THAT ORDER THIS QUESTION IS
$qorderquery = "SELECT * FROM {$dbprefix}questions WHERE sid=$surveyid AND type not in ('S', 'D', 'T', 'Q')";
$qorderresult = db_execute_assoc($qorderquery) or safe_die ("$qorderquery<br />".$connect->ErrorMsg());
$qrows = array(); //Create an empty array in case FetchRow does not return any rows
while ($qrow = $qorderresult->FetchRow())
{
$qrows[] = $qrow;
}
usort($qrows, 'GroupOrderThenQuestionOrder'); // Perform a case insensitive natural sort on group name then question title of a multidimensional array
$c=0;
foreach ($qrows as $qr)
{
$qidorder[]=array($c, $qrow['qid']);
$c++;
}
$qordercount="";
//1: Get each condition's question id
$conquery= "SELECT {$dbprefix}conditions.qid, cqid, {$dbprefix}questions.question, "
. "{$dbprefix}questions.gid "
. "FROM {$dbprefix}conditions, {$dbprefix}questions, {$dbprefix}groups "
. "WHERE {$dbprefix}conditions.qid={$dbprefix}questions.qid "
. "AND {$dbprefix}questions.gid={$dbprefix}groups.gid ORDER BY {$dbprefix}conditions.qid";
$conresult=db_execute_assoc($conquery) or safe_die("Couldn't check conditions for relative consistency<br />$conquery<br />".$connect->ErrorMsg());
//2: Check each conditions cqid that it occurs later than the cqid
while ($conrow=$conresult->FetchRow())
{
$cqidfound=0;
$qidfound=0;
$b=0;
while ($b<$qordercount)
{
if ($conrow['cqid'] == $qidorder[$b][1])
{
$cqidfound = 1;
$b=$qordercount;
}
if ($conrow['qid'] == $qidorder[$b][1])
{
$qidfound = 1;
$b=$qordercount;
}
if ($qidfound == 1)
{
$failedcheck[]=array($conrow['qid'], $conrow['question'], ": ".$clang->gT("This question has a condition set, however the condition is based on a question that appears after it."), $conrow['gid']);
}
$b++;
}
}
// End Check Survey Structure
return $failedcheck;
}
/**
* Creates the initial survey table with columns for selected survey settings
* Returns true if successful and database error if not
* @param surveyid
* @return mixed
*/
function surveyCreateTable($surveyid)
{
global $dbprefix, $databasetabletype, $connect;
$createsurvey='';
//Check for any additional fields for this survey and create necessary fields (token and datestamp)
$pquery = "SELECT anonymized, allowregister, datestamp, ipaddr, refurl FROM {$dbprefix}surveys WHERE sid={$surveyid}";
$presult=db_execute_assoc($pquery);
$prow=$presult->FetchRow();
//Get list of questions for the base language
$fieldmap=createFieldMap($surveyid);
foreach ($fieldmap as $arow) //With each question, create the appropriate field(s)
{
$createsurvey .= " `{$arow['fieldname']}`";
switch($arow['type'])
{
case 'id':
$createsurvey .= " I NOTNULL AUTO PRIMARY";
break;
case 'token':
$createsurvey .= " C(36)";
break;
case 'startlanguage':
$createsurvey .= " C(20) NOTNULL";
break;
case "startdate":
case "datestamp":
$createsurvey .= " T NOTNULL";
break;
case "submitdate":
$createsurvey .= " T";
break;
case "lastpage":
$createsurvey .= " I";
break;
case "ipaddress":
if ($prow['ipaddr'] == "Y")
$createsurvey .= " X";
break;
case "url":
if ($prow['refurl'] == "Y")
$createsurvey .= " X";
break;
}
$createsurvey .= ",\n";
}
//strip trailing comma and new line feed (if any)
$createsurvey = rtrim($createsurvey, ",\n");
$tabname = "{$dbprefix}survey_{$surveyid}"; # not using db_table_name as it quotes the table name (as does CreateTableSQL)
$taboptarray = array('mysql' => 'ENGINE='.$databasetabletype.' CHARACTER SET utf8 COLLATE utf8_unicode_ci',
'mysqli'=> 'ENGINE='.$databasetabletype.' CHARACTER SET utf8 COLLATE utf8_unicode_ci');
$dict = NewDataDictionary($connect);
$sqlarray = $dict->CreateTableSQL($tabname, $createsurvey, $taboptarray);
$execresult=$dict->ExecuteSQLArray($sqlarray,1);
if ($execresult==0 || $execresult==1)
{
return $connect->ErrorMsg();
} elseif ($execresult != 0 && $execresult !=1)
{
// Set Auto Increment value if specified
$anquery = "SELECT autonumber_start FROM {$dbprefix}surveys WHERE sid={$surveyid}";
if ($anresult=db_execute_assoc($anquery))
{
//if there is an autonumber_start field, start auto numbering here
while($row=$anresult->FetchRow())
{
if ($row['autonumber_start'] > 0)
{
$autonumberquery = "ALTER TABLE {$dbprefix}survey_{$surveyid} AUTO_INCREMENT = ".$row['autonumber_start'];
$result = $connect->Execute($autonumberquery);
}
}
}
return true;
}
}
?>
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