validation on simultaneous household membership for a person

src/Bundle/ChillPersonBundle/Validator/Constraints/Household/HouseholdMembershipSequential.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Chill\PersonBundle\Validator\Constraints\Household;
+
+use Symfony\Component\Validator\Constraint;
+
+/**
+ * @Annotation
+ */
+class HouseholdMembershipSequential extends Constraint
+{
+    public $message = 'household_membership.Person with membership covering';
+
+    public function getTargets()
+    {
+        return [ self::CLASS_CONSTRAINT ];
+    }
+}

src/Bundle/ChillPersonBundle/Validator/Constraints/Household/HouseholdMembershipSequentialValidator.php

@@ -0,0 +1,65 @@
+<?php
+
+namespace Chill\PersonBundle\Validator\Constraints\Household;
+
+use Chill\PersonBundle\Entity\Person;
+use Chill\MainBundle\Util\DateRangeCovering;
+use Chill\PersonBundle\Templating\Entity\PersonRender;
+use Symfony\Component\Validator\Constraint;
+use Symfony\Component\Validator\ConstraintValidator;
+use Symfony\Component\Validator\Exception\UnexpectedTypeException;
+use Symfony\Component\Validator\Exception\UnexpectedValueException;
+
+/**
+ * Validate that a person does not belong to two household at 
+ * the same time
+ */
+class HouseholdMembershipSequentialValidator extends ConstraintValidator
+{
+    private PersonRender $render;
+
+    public function __construct(PersonRender $render)
+    {
+        $this->render = $render;
+    }
+
+    public function validate($person, Constraint $constraint)
+    {
+        if (!$person instanceof Person) {
+            throw new UnexpectedTypeException($constraint, Person::class);
+        }
+
+        $participations = $person->getHouseholdParticipations();
+
+        if ($participations->count() === 0) {
+            return;
+        }
+
+        $covers = new DateRangeCovering(1, $participations[0]
+            ->getStartDate()->getTimezone());
+
+        foreach ($participations as $k => $p) {
+            $covers->add($p->getStartDate(), $p->getEndDate(), $k);
+        }
+
+        $covers->compute();
+
+        if ($covers->hasIntersections()) {
+            foreach ($covers->getIntersections() as list($start, $end, $metadata)) {
+                $participation = $participations[$metadata[0]];
+
+                $this->context
+                    ->buildViolation("household_membership.Person with membership covering")
+                    ->setParameters([
+                        '%person_name%' => $this->render->renderString(
+                            $participation->getPerson(), []
+                        ),
+                        // TODO when date is correctly i18n, fix this
+                        '%from%' => $start->format('d-m-Y')
+                    ])
+                    ->addViolation()
+                    ;
+            }
+        }
+    }
+}