/**
* {@inheritDoc}
*/
public function isEnabled()
{
if (null === $this->rule) {
throw new FeatureException('No Rule has been set');
}
if (null === $this->context) {
$this->context = new Context();
}
return $this->rule->evaluate($this->context);
}
protected function executeSetRule($types, $discountPercent)
{
$contextOptions['true'] = true;
$andOperators = [];
$orOperators = [];
$trueVar = new Variable('true');
foreach ($types as $type) {
if (is_array($type)) {
foreach ($type as $t) {
$contextOptions['contains' . $t . 'Products'] = $this->containsProductWithType($t);
$orOperators[] = new EqualTo(new Variable('contains' . $t . 'Products'), $trueVar);
}
$andOperators[] = new LogicalOr($orOperators);
} else {
$contextOptions['contains' . $type . 'Products'] = $this->containsProductWithType($type);
$var = new Variable('contains' . $type . 'Products');
$andOperators[] = new EqualTo($var, $trueVar);
}
}
$context = new Context($contextOptions);
$rule = new Rule(new LogicalAnd($andOperators), function () use($types, $discountPercent) {
$discount = 0;
foreach ($types as $type) {
if (!is_array($type)) {
$extractTypes[] = $type;
}
}
while (true) {
$tuple = $this->extractProductsTuple($extractTypes);
if (empty($tuple)) {
break;
}
foreach ($tuple as $product) {
$discount += $product['price'] * $discountPercent / 100;
}
}
$this->discount += $discount;
});
$rule->execute($context);
}
/**
* evaluateRule
*
* @param RankRule $rule
* @param Context $ctx
* @access private
* @return void
*/
private function evaluateRule(RankRule $rule, Context $ctx)
{
$propositionClass = sprintf("Ruler\\Operator\\%s", ucfirst($rule->getComparator()));
if (!class_exists($propositionClass)) {
throw new \Exception("Class {$propositionClass} does not exist");
}
// If fact is a date, we must convert value to unix timestamp
// to do comparison
if (preg_match('/date/i', $rule->getFact()->getName())) {
$date = new \DateTime($rule->getValue());
$value = $date->getTimestamp();
} else {
$value = $rule->getValue();
}
$proposition = new $propositionClass(new Variable($rule->getFact()->getName()), new Variable('x' . $rule->getFact()->getName(), $value));
// add x value to context
$myRule = new Rule($proposition, function () {
});
if ($myRule->evaluate($ctx)) {
if ($this->debug) {
print "<h2>rule passed!</h2>";
}
return true;
} else {
if ($this->debug) {
print "<h2>rule failed</h2>";
}
return false;
}
}
/**
* @expectedException \LogicException
*/
public function testNonCallableActionsWillThrowAnException()
{
$context = new Context();
$rule = new Rule(new TrueProposition(), 'this is not callable');
$rule->execute($context);
}
