/**
* Returns the best solution for a given pass of a participant
* @return array An associated array containing the best solution
* @access public
*/
public function getBestSolution($solutions)
{
$user_solution = array();
foreach ($solutions as $idx => $solution_value) {
if (preg_match("/^(\\\$v\\d+)\$/", $solution_value["value1"], $matches)) {
$user_solution[$matches[1]] = $solution_value["value2"];
$varObj = $this->getVariable($matches[1]);
$varObj->setValue($solution_value["value2"]);
} else {
if (preg_match("/^(\\\$r\\d+)\$/", $solution_value["value1"], $matches)) {
if (!array_key_exists($matches[1], $user_solution)) {
$user_solution[$matches[1]] = array();
}
$user_solution[$matches[1]]["value"] = $solution_value["value2"];
} else {
if (preg_match("/^(\\\$r\\d+)_unit\$/", $solution_value["value1"], $matches)) {
if (!array_key_exists($matches[1], $user_solution)) {
$user_solution[$matches[1]] = array();
}
$user_solution[$matches[1]]["unit"] = $solution_value["value2"];
}
}
}
}
foreach ($this->getResults() as $result) {
$resVal = $result->calculateFormula($this->getVariables(), $this->getResults(), parent::getId(), false);
if (is_object($result->getUnit())) {
$user_solution[$result->getResult()]["unit"] = $result->getUnit()->getId();
$user_solution[$result->getResult()]["value"] = $resVal;
} else {
if ($result->getUnit() == NULL) {
$unit_factor = 1;
// there is no fix result_unit, any "available unit" is accepted
$available_units = $result->getAvailableResultUnits(parent::getId());
$result_name = $result->getResult();
if ($available_units[$result_name] != NULL) {
$check_unit = in_array($user_solution[$result_name]['unit'], $available_units[$result_name]);
}
if ($check_unit == true) {
//get unit-factor
$unit_factor = assFormulaQuestionUnit::lookupUnitFactor($user_solution[$result_name]['unit']);
$user_solution[$result->getResult()]["value"] = round(ilMath::_div($resVal, $unit_factor), 55);
}
}
}
if ($result->getResultType() == assFormulaQuestionResult::RESULT_CO_FRAC || $result->getResultType() == assFormulaQuestionResult::RESULT_FRAC) {
$value = assFormulaQuestionResult::convertDecimalToCoprimeFraction($resVal);
if (is_array($value)) {
$frac_helper = $value[1];
$value = $value[0];
}
$user_solution[$result->getResult()]["value"] = $value;
$user_solution[$result->getResult()]["frac_helper"] = $frac_helper;
} elseif ($result->getPrecision() > 0) {
$user_solution[$result->getResult()]["value"] = round($resVal, $result->getPrecision());
} else {
$user_solution[$result->getResult()]["value"] = round($resVal);
}
}
return $user_solution;
}
