add validation to accompanying periods

src/Bundle/ChillMainBundle/Tests/Util/DateRangeCoveringTest.php

@@ -37,6 +37,18 @@ class DateRangeCoveringTest extends TestCase
         $this->assertNotContains(3, $cover->getIntersections()[0][2]);
     }
 
+    public function testCoveringWithMinCover1_NoCoveringWithNullDates()
+    {
+        $cover = new DateRangeCovering(1, new \DateTimeZone('Europe/Brussels')); 
+        $cover
+            ->add(new \DateTime('2021-10-05'), new \DateTime('2021-10-18'), 521)
+            ->add(new \DateTime('2021-10-26'), null, 663)
+            ->compute()
+            ;
+
+        $this->assertFalse($cover->hasIntersections());
+    }
+
     public function testCoveringWithMinCover1WithTwoIntersections()
     {
         $cover = new DateRangeCovering(1, new \DateTimeZone('Europe/Brussels')); 

src/Bundle/ChillMainBundle/Util/DateRangeCovering.php

@@ -140,67 +140,6 @@ class DateRangeCovering
         return $this;
     }
 
-    private function process(array $intersections): array
-    {
-        $result = [];
-        $starts = [];
-        $ends   = [];
-        $metadatas = [];
-
-        while (null !== ($current = \array_pop($intersections))) {
-            list($cStart, $cEnd, $cMetadata) = $current;
-            $n = count($cMetadata);
-
-            foreach ($intersections as list($iStart, $iEnd, $iMetadata)) {
-                $start = max($cStart, $iStart);
-                $end = min($cEnd, $iEnd);
-
-                if ($start <= $end) {
-                    if (FALSE !== ($key = \array_search($start, $starts))) {
-                        if ($ends[$key] === $end) {
-                            $metadatas[$key] = \array_unique(\array_merge($metadatas[$key], $iMetadata));
-                            continue;
-                        }
-                    }
-                    $starts[] = $start;
-                    $ends[]   = $end;
-                    $metadatas[] = \array_unique(\array_merge($iMetadata, $cMetadata));
-                }
-            }
-        }
-
-        // recompose results
-        foreach ($starts as $k => $start) {
-            $result[] = [$start, $ends[$k], \array_unique($metadatas[$k])];
-        }
-
-        return $result;
-    }
-
-    private function addToIntersections(array $intersections, array $intersection)
-    {
-        $foundExisting = false;
-        list($nStart, $nEnd, $nMetadata) = $intersection;
-
-        \array_walk($intersections,
-            function(&$i, $key) use ($nStart, $nEnd, $nMetadata, $foundExisting) {
-                if ($foundExisting) {
-                    return;
-                };
-                if ($i[0] === $nStart && $i[1] === $nEnd) {
-                    $foundExisting = true;
-                    $i[2] = \array_merge($i[2], $nMetadata);
-                }
-            }
-        );
-
-        if (!$foundExisting) {
-            $intersections[] = $intersection;
-        }
-
-        return $intersections;
-    }
-
     public function hasIntersections(): bool
     {
         if (!$this->computed) {

src/Bundle/ChillPersonBundle/Controller/AccompanyingCourseApiController.php

@@ -54,10 +54,14 @@ class AccompanyingCourseApiController extends ApiController
         $accompanyingPeriod = $this->getEntity('participation', $id, $request);
 
         $this->checkACL('confirm', $request, $_format, $accompanyingPeriod);
-$workflow = $this->registry->get($accompanyingPeriod);
+        $workflow = $this->registry->get($accompanyingPeriod);
 
         if (FALSE === $workflow->can($accompanyingPeriod, 'confirm')) {
-            throw new BadRequestException('It is not possible to confirm this period');
+            // throw new BadRequestException('It is not possible to confirm this period');
+            $errors = $this->validator->validate($accompanyingPeriod, null, [$accompanyingPeriod::STEP_CONFIRMED]);
+            if( count($errors) > 0 ){
+                return $this->json($errors, 422);
+            }
         }
 
         $workflow->apply($accompanyingPeriod, 'confirm');
@@ -109,6 +113,13 @@ $workflow = $this->registry->get($accompanyingPeriod);
 
     public function resourceApi($id, Request $request, string $_format): Response
     {
+        $accompanyingPeriod = $this->getEntity('resource', $id, $request);
+        $errors = $this->validator->validate($accompanyingPeriod);
+
+        if ($errors->count() > 0) {
+            return $this->json($errors, 422);
+        }
+
         return $this->addRemoveSomething('resource', $id, $request, $_format, 'resource', Resource::class);
     }
 

src/Bundle/ChillPersonBundle/DataFixtures/ORM/LoadAccompanyingPeriodOrigin.php

@@ -40,7 +40,7 @@ class LoadAccompanyingPeriodOrigin extends AbstractFixture implements OrderedFix
 
     public function getOrder()
     {
-        return 10005;
+        return 9000;
     }
 
     private $phoneCall = ['en' => 'phone call', 'fr' => 'appel téléphonique'];

src/Bundle/ChillPersonBundle/DataFixtures/ORM/LoadPeople.php

@@ -247,7 +247,9 @@ class LoadPeople extends AbstractFixture implements OrderedFixtureInterface, Con
         if (\random_int(0, 10) > 3) {
             // always add social scope:
             $accompanyingPeriod->addScope($this->getReference('scope_social'));
-
+            $origin = $this->getReference(LoadAccompanyingPeriodOrigin::ACCOMPANYING_PERIOD_ORIGIN);
+            $accompanyingPeriod->setOrigin($origin);
+            $accompanyingPeriod->setIntensity('regular');
             $accompanyingPeriod->setAddressLocation($this->createAddress());
             $manager->persist($accompanyingPeriod->getAddressLocation());
             $workflow = $this->workflowRegistry->get($accompanyingPeriod);

src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod.php

@@ -45,6 +45,9 @@ use Chill\MainBundle\Entity\User;
 use Symfony\Component\Serializer\Annotation\Groups;
 use Symfony\Component\Serializer\Annotation\DiscriminatorMap;
 use Symfony\Component\Validator\Constraints as Assert;
+use Symfony\Component\Validator\GroupSequenceProviderInterface;
+use Chill\PersonBundle\Validator\Constraints\AccompanyingPeriod\ParticipationOverlap;
+use Chill\PersonBundle\Validator\Constraints\AccompanyingPeriod\ResourceDuplicateCheck;
 
 /**
  * AccompanyingPeriod Class
@@ -54,9 +57,10 @@ use Symfony\Component\Validator\Constraints as Assert;
  * @DiscriminatorMap(typeProperty="type", mapping={
  *  "accompanying_period"=AccompanyingPeriod::class
  *  })
+ * @Assert\GroupSequenceProvider
  */
 class AccompanyingPeriod implements TrackCreationInterface, TrackUpdateInterface,
-    HasScopesInterface, HasCentersInterface
+    HasScopesInterface, HasCentersInterface, GroupSequenceProviderInterface
 {
     /**
      * Mark an accompanying period as "occasional"
@@ -132,6 +136,7 @@ class AccompanyingPeriod implements TrackCreationInterface, TrackUpdateInterface
      *       cascade={"persist", "remove"},
      *       orphanRemoval=true
      *     )
+     * @Assert\NotBlank(groups={AccompanyingPeriod::STEP_DRAFT})
      */
     private $comments;
 
@@ -147,9 +152,10 @@ class AccompanyingPeriod implements TrackCreationInterface, TrackUpdateInterface
      * @var Collection
      *
      * @ORM\OneToMany(targetEntity=AccompanyingPeriodParticipation::class,
-     *     mappedBy="accompanyingPeriod",
+     *     mappedBy="accompanyingPeriod", orphanRemoval=true,
      *     cascade={"persist", "refresh", "remove", "merge", "detach"})
      * @Groups({"read"})
+     * @ParticipationOverlap(groups={AccompanyingPeriod::STEP_DRAFT, AccompanyingPeriod::STEP_CONFIRMED})
      */
     private $participations;
 
@@ -188,6 +194,7 @@ class AccompanyingPeriod implements TrackCreationInterface, TrackUpdateInterface
      * @ORM\ManyToOne(targetEntity=Origin::class)
      * @ORM\JoinColumn(nullable=true)
      * @Groups({"read", "write"})
+     * @Assert\NotBlank(groups={AccompanyingPeriod::STEP_CONFIRMED})
      */
     private $origin;
 
@@ -195,8 +202,9 @@ class AccompanyingPeriod implements TrackCreationInterface, TrackUpdateInterface
      * @var string
      * @ORM\Column(type="string", nullable=true)
      * @Groups({"read", "write"})
+     * @Assert\NotBlank(groups={AccompanyingPeriod::STEP_CONFIRMED})
      */
-    private $intensity;
+    private $intensity = self::INTENSITY_OCCASIONAL;
 
     /**
      * @var Collection
@@ -210,6 +218,7 @@ class AccompanyingPeriod implements TrackCreationInterface, TrackUpdateInterface
      *     inverseJoinColumns={@ORM\JoinColumn(name="scope_id", referencedColumnName="id")}
      * )
      * @Groups({"read"})
+     * @Assert\Count(min=1, groups={AccompanyingPeriod::STEP_CONFIRMED})
      */
     private $scopes;
 
@@ -256,6 +265,7 @@ class AccompanyingPeriod implements TrackCreationInterface, TrackUpdateInterface
      *     orphanRemoval=true
      * )
      * @Groups({"read"})
+     * @ResourceDuplicateCheck(groups={AccompanyingPeriod::STEP_DRAFT, AccompanyingPeriod::STEP_CONFIRMED, "Default", "default"})
      */
     private $resources;
 
@@ -267,6 +277,7 @@ class AccompanyingPeriod implements TrackCreationInterface, TrackUpdateInterface
      *     name="chill_person_accompanying_period_social_issues"
      *  )
      * @Groups({"read"})
+     * @Assert\Count(min=1, groups={AccompanyingPeriod::STEP_CONFIRMED})
      */
     private Collection $socialIssues;
 
@@ -606,6 +617,14 @@ class AccompanyingPeriod implements TrackCreationInterface, TrackUpdateInterface
         return $participation;
     }
 
+    /**
+     * Remove Participation
+     */
+
+    public function removeParticipation(AccompanyingPeriodParticipation $participation)
+    {
+        $participation->setAccompanyingPeriod(null);
+    }
 
     /**
      * Remove Person
@@ -1115,4 +1134,17 @@ class AccompanyingPeriod implements TrackCreationInterface, TrackUpdateInterface
 
         return $centers ?? null;
     }
+
+    public function getGroupSequence()
+    {
+        if($this->getStep() == self::STEP_DRAFT)
+        {
+            return [[self::STEP_DRAFT]];
+        }
+
+        if($this->getStep() == self::STEP_CONFIRMED)
+        {
+            return [[self::STEP_DRAFT, self::STEP_CONFIRMED]];
+        }
+    }
 }

src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod/Resource.php

@@ -33,7 +33,13 @@ use Symfony\Component\Serializer\Annotation\Groups;
 
 /**
  * @ORM\Entity
- * @ORM\Table(name="chill_person_accompanying_period_resource")
+ * @ORM\Table(
+ *  name="chill_person_accompanying_period_resource",
+ *  uniqueConstraints={
+ *      @ORM\UniqueConstraint(name="person_unique", columns={"person_id", "accompanyingperiod_id"}),
+ *      @ORM\UniqueConstraint(name="thirdparty_unique", columns={"thirdparty_id", "accompanyingperiod_id"})
+ *  }
+ * )
  * @DiscriminatorMap(typeProperty="type", mapping={
  *   "accompanying_period_resource"=Resource::class
  *  })

src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriodParticipation.php

@@ -134,4 +134,11 @@ class AccompanyingPeriodParticipation
     {
         return $this->endDate === null;
     }
+
+    private function checkSameStartEnd() 
+    {
+        if($this->endDate == $this->startDate) {
+            $this->accompanyingPeriod->removeParticipation($this);
+        }
+    }
 }

src/Bundle/ChillPersonBundle/Resources/public/vuejs/AccompanyingCourse/App.vue

@@ -16,16 +16,16 @@
    <comment v-if="accompanyingCourse.step === 'DRAFT'"></comment>
    <confirm v-if="accompanyingCourse.step === 'DRAFT'"></confirm>
 
-    <div v-for="error in errorMsg" class="vue-component errors alert alert-danger">
+    <!-- <div v-for="error in errorMsg" v-bind:key="error.id" class="vue-component errors alert alert-danger">
        <p>
           <span>{{ error.sta }} {{ error.txt }}</span><br>
           <span>{{ $t(error.msg) }}</span>
        </p>
-    </div>
+    </div> -->
 </template>
 
 <script>
-import { mapState } from 'vuex'
+import { mapGetters, mapState } from 'vuex'
 import Banner from './components/Banner.vue';
 import StickyNav from './components/StickyNav.vue';
 import OriginDemand from './components/OriginDemand.vue';
@@ -55,11 +55,12 @@ export default {
       Comment,
       Confirm,
    },
-   computed: mapState([
+   computed: {
+      ...mapState([
          'accompanyingCourse',
-      'addressContext',
+         'addressContext'
-      'errorMsg'
+      ]),
-   ])
+   },
 };
 </script>
 

src/Bundle/ChillPersonBundle/Resources/public/vuejs/AccompanyingCourse/api.js

@@ -86,7 +86,8 @@ const postParticipation = (id, payload, method) => {
       })
       .then(response => {
          if (response.ok) { return response.json(); }
-         throw { msg: 'Error while sending AccompanyingPeriod Course participation.', sta: response.status, txt: response.statusText, err: new Error(), body: response.body };
+         // TODO: adjust message according to status code? Or how to access the message from the violation array?
+         throw { msg: 'Error while sending AccompanyingPeriod Course participation', sta: response.status, txt: response.statusText, err: new Error(), body: response.body };
       });
 };
 

src/Bundle/ChillPersonBundle/Resources/public/vuejs/AccompanyingCourse/components/OriginDemand.vue

@@ -10,13 +10,13 @@
          <VueMultiselect
             name="selectOrigin"
             label="text"
-            v-bind:custom-label="transText"
+            :custom-label="transText"
             track-by="id"
-            v-bind:multiple="false"
+            :multiple="false"
-            v-bind:searchable="true"
+            :searchable="true"
-            v-bind:placeholder="$t('origin.placeholder')"
+            :placeholder="$t('origin.placeholder')"
             v-model="value"
-            v-bind:options="options"
+            :options="options"
             @select="updateOrigin">
          </VueMultiselect>
 
@@ -47,18 +47,18 @@ export default {
    },
    methods: {
       getOptions() {
-         //console.log('loading origins list');
          getListOrigins().then(response => new Promise((resolve, reject) => {
             this.options = response.results;
             resolve();
          }));
       },
       updateOrigin(value) {
-         //console.log('value', value);
+         console.log('value', value);
          this.$store.dispatch('updateOrigin', value);
       },
       transText ({ text }) {
-         return text.fr //TODO multilang
+         const parsedText = JSON.parse(text);
+         return parsedText.fr;
       },
    }
 }

src/Bundle/ChillPersonBundle/Resources/public/vuejs/AccompanyingCourse/index.js

@@ -2,6 +2,8 @@ import { createApp } from 'vue'
 import { _createI18n } from 'ChillMainAssets/vuejs/_js/i18n'
 import { appMessages } from './js/i18n'
 import { initPromise } from './store'
+import VueToast from 'vue-toast-notification';
+import 'vue-toast-notification/dist/theme-sugar.css';
 
 import App from './App.vue';
 import Banner from './components/Banner.vue';
@@ -21,6 +23,7 @@ if (root === 'app') {
       })
       .use(store)
       .use(i18n)
+      .use(VueToast)
       .component('app', App)
       .mount('#accompanying-course');
    });

src/Bundle/ChillPersonBundle/Resources/public/vuejs/AccompanyingCourse/store/index.js

@@ -77,7 +77,7 @@ let initPromise = Promise.all([scopesPromise, accompanyingCoursePromise])
          },
          mutations: {
             catchError(state, error) {
-               console.log('### mutation: a new error have been catched and pushed in store !', error);
+               // console.log('### mutation: a new error have been catched and pushed in store !', error);
                state.errorMsg.push(error);
             },
             removeParticipation(state, participation) {

src/Bundle/ChillPersonBundle/Validator/Constraints/AccompanyingPeriod/LocationValidity.php

@@ -11,7 +11,7 @@ class LocationValidity extends Constraint
 {
     public $messagePersonLocatedMustBeAssociated = "The person where the course is located must be associated to the course. Change course's location before removing the person.";
 
-    public $messagePeriodMustRemainsLocated = "The period must remains located";
+    public $messagePeriodMustRemainsLocated = "The period must remain located";
 
     public function getTargets()
     {

src/Bundle/ChillPersonBundle/Validator/Constraints/AccompanyingPeriod/ParticipationOverlap.php

@@ -0,0 +1,15 @@
+<?php
+declare(strict_types=1);
+
+namespace Chill\PersonBundle\Validator\Constraints\AccompanyingPeriod;
+
+use Symfony\Component\Validator\Constraint;
+
+
+/**
+ * @Annotation
+ */
+class ParticipationOverlap extends Constraint
+{
+    public $message = 'This participation already exists.';
+}

src/Bundle/ChillPersonBundle/Validator/Constraints/AccompanyingPeriod/ParticipationOverlapValidator.php

@@ -0,0 +1,72 @@
+<?php
+declare(strict_types=1);
+
+namespace Chill\PersonBundle\Validator\Constraints\AccompanyingPeriod;
+
+use Chill\MainBundle\Util\DateRangeCovering;
+use Chill\PersonBundle\Entity\AccompanyingPeriodParticipation;
+use Chill\PersonBundle\Validator\Constraints\AccompanyingPeriod\ParticipationOverlap;
+use Doctrine\Common\Collections\Collection;
+use Symfony\Component\Validator\Constraint;
+use Symfony\Component\Validator\ConstraintValidator;
+use Symfony\Component\Validator\Exception\UnexpectedTypeException;
+
+class ParticipationOverlapValidator extends ConstraintValidator
+{
+    private const MAX_PARTICIPATION = 1;
+
+    public function validate($participations, Constraint $constraint)
+    {
+        if (!$constraint instanceof ParticipationOverlap) {
+            throw new UnexpectedTypeException($constraint, ParticipationOverlap::class);
+        }
+
+        if (!$participations instanceof Collection) {
+            throw new UnexpectedTypeException($participations, 'This should be a collection');
+        }
+
+        if (count($participations) <= self::MAX_PARTICIPATION) {
+            return;
+        }
+
+        $overlaps = new DateRangeCovering(self::MAX_PARTICIPATION, $participations[0]->getStartDate()->getTimezone());
+
+        foreach ($participations as $participation) {
+
+            if (!$participation instanceof AccompanyingPeriodParticipation) {
+                throw new UnexpectedTypeException($participation, AccompanyingPeriodParticipation::class);
+            }
+
+            $personId = $participation->getPerson()->getId();
+ 
+            $particpationList[$personId][] = $participation;
+
+        }
+
+        foreach ($particpationList as $group) {
+            if (count($group) > 1) {
+                foreach ($group as $p) {
+                    $overlaps->add($p->getStartDate(), $p->getEndDate(), $p->getId());
+                }
+            }
+        }
+
+        $overlaps->compute();
+
+        if ($overlaps->hasIntersections()) {
+            foreach ($overlaps->getIntersections() as list($start, $end, $ids)) {
+                $msg = $end === null ? $constraint->message :
+                    $constraint->message;
+
+                $this->context->buildViolation($msg)
+                    ->setParameters([
+                        '{{ start }}' => $start->format('d-m-Y'),
+                        '{{ end }}' => $end === null ? null : $end->format('d-m-Y'),
+                        '{{ ids }}' => $ids,
+                    ])
+                    ->addViolation();
+            }
+        }
+
+    }
+}

src/Bundle/ChillPersonBundle/Validator/Constraints/AccompanyingPeriod/ResourceDuplicateCheck.php

@@ -0,0 +1,16 @@
+<?php
+declare(strict_types=1);
+
+namespace Chill\PersonBundle\Validator\Constraints\AccompanyingPeriod;
+
+use Symfony\Component\Validator\Constraint;
+
+
+/**
+ * @Annotation
+ */
+class ResourceDuplicateCheck extends Constraint
+{
+    public $message = '{{ name }} is already associated to this accompanying course.';
+}
+

src/Bundle/ChillPersonBundle/Validator/Constraints/AccompanyingPeriod/ResourceDuplicateCheckValidator.php

@@ -0,0 +1,56 @@
+<?php
+declare(strict_types=1);
+
+namespace Chill\PersonBundle\Validator\Constraints\AccompanyingPeriod;
+
+use Chill\PersonBundle\Entity\Person;
+use Chill\PersonBundle\Templating\Entity\PersonRender;
+use Doctrine\Common\Collections\Collection;
+use Symfony\Component\Form\Exception\UnexpectedTypeException;
+use Symfony\Component\Validator\Constraint;
+use Symfony\Component\Validator\ConstraintValidator;
+use Chill\PersonBundle\Validator\Constraints\AccompanyingPeriod\ResourceDuplicateCheck;
+use Chill\ThirdPartyBundle\Templating\Entity\ThirdPartyRender;
+
+class ResourceDuplicateCheckValidator extends ConstraintValidator
+{
+
+    private PersonRender $personRender;
+    private ThirdPartyRender $thirdpartyRender;
+
+    public function __construct(PersonRender $personRender, ThirdPartyRender $thirdPartyRender)
+    {
+        $this->personRender = $personRender;
+        $this->thirdpartyRender = $thirdPartyRender;
+    }
+
+    public function validate($resources, Constraint $constraint)
+    {
+        if (!$constraint instanceof ResourceDuplicateCheck) {
+            throw new UnexpectedTypeException($constraint, ParticipationOverlap::class);
+        }
+
+        if (!$resources instanceof Collection) {
+            throw new UnexpectedTypeException($resources, Collection::class);
+        }
+
+        $resourceList = [];
+
+        foreach ($resources as $resource) {
+            $id = ($resource->getResource() instanceof Person ? 'p' :
+                't').$resource->getResource()->getId();
+
+            if (\in_array($id, $resourceList, true)) {
+                $this->context->buildViolation($constraint->message)
+                    ->setParameter('{{ name }}', $resource->getResource() instanceof Person ? $this->personRender->renderString($resource->getResource(), []) : 
+                        $this->thirdpartyRender->renderString($resource->getResource(), []))
+                    ->addViolation();
+            }
+
+            $resourceList[] = $id;
+            
+        }
+
+    }
+
+}

src/Bundle/ChillPersonBundle/config/services/validator.yaml

@@ -0,0 +1,6 @@
+services:
+  Chill\PersonBundle\Validator\Constraints\AccompanyingPeriod:
+    autowire: true
+    autoconfigure: true
+    tags: ['validator.service_arguments']
+    

src/Bundle/ChillPersonBundle/migrations/Version20211020131133.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Chill\Migrations\Person;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Validation added to accompanying period resources and accompanying period.
+ */
+final class Version20211020131133 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Validation added to accompanying period resources and accompanying period.';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql('CREATE UNIQUE INDEX person_unique ON chill_person_accompanying_period_resource (person_id, accompanyingperiod_id) WHERE person_id IS NOT NULL');
+        $this->addSql('CREATE UNIQUE INDEX thirdparty_unique ON chill_person_accompanying_period_resource (thirdparty_id, accompanyingperiod_id) WHERE thirdparty_id IS NOT NULL');
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('DROP INDEX person_unique');
+        $this->addSql('DROP INDEX thirdparty_unique');
+    }
+}

src/Bundle/ChillPersonBundle/migrations/Version20211021125359.php

@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Chill\Migrations\Person;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Custom constraint added to database to prevent identical participations.
+ */
+final class Version20211021125359 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Custom constraint added to database to prevent identical participations.';
+    }
+
+    public function up(Schema $schema): void
+    {
+        // creates a constraint 'participations may not overlap'
+        $this->addSql('ALTER TABLE chill_person_accompanying_period_participation ADD CONSTRAINT '.
+            "participations_no_overlap EXCLUDE USING GIST(
+            -- extension btree_gist required to include comparaison with integer
+            person_id WITH =, accompanyingperiod_id WITH =,
+            daterange(startdate, enddate) WITH &&
+        )
+        INITIALLY DEFERRED");
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('CREATE UNIQUE INDEX participation_unique ON chill_person_accompanying_period_participation (accompanyingperiod_id, person_id)');
+    }
+}

src/Bundle/ChillPersonBundle/translations/validators.fr.yml

@@ -41,3 +41,6 @@ household:
 household_membership:
     The end date must be after start date: La date de la fin de l'appartenance doit être postérieure à la date de début.
     Person with membership covering: Une personne ne peut pas appartenir à deux ménages simultanément. Or, avec cette modification, %person_name% appartiendrait à %nbHousehold% ménages à partir du %from%.
+
+# Accompanying period
+'{{ name }} is already associated to this accompanying course.': '{{ name }} est déjà associé avec ce parcours.'