Add EmergencyStatusUpdateEvent and dispatch logic for emergency status changes

- Introduced `EmergencyStatusUpdateEvent` extending `TicketUpdateEvent` to handle emergency status updates.
- Modified `ChangeEmergencyStateCommandHandler` to dispatch the new event when the emergency status is toggled.
- Updated tests to validate event dispatching for emergency status changes.

src/Bundle/ChillTicketBundle/src/Action/Ticket/Handler/ChangeEmergencyStateCommandHandler.php

@@ -14,14 +14,20 @@ namespace Chill\TicketBundle\Action\Ticket\Handler;
 use Chill\TicketBundle\Action\Ticket\ChangeEmergencyStateCommand;
 use Chill\TicketBundle\Entity\EmergencyStatusHistory;
 use Chill\TicketBundle\Entity\Ticket;
+use Chill\TicketBundle\Event\EmergencyStatusUpdateEvent;
+use Chill\TicketBundle\Event\TicketUpdateEvent;
 use Symfony\Component\Clock\ClockInterface;
+use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
 
 /**
  * Handler for changing the emergency status of a ticket.
  */
 class ChangeEmergencyStateCommandHandler
 {
-    public function __construct(private readonly ClockInterface $clock) {}
+    public function __construct(
+        private readonly ClockInterface $clock,
+        private readonly EventDispatcherInterface $eventDispatcher,
+    ) {}
 
     public function __invoke(Ticket $ticket, ChangeEmergencyStateCommand $command): Ticket
     {
@@ -30,6 +36,8 @@ class ChangeEmergencyStateCommandHandler
             return $ticket;
         }
 
+        $previous = $ticket->getEmergencyStatus();
+
         // End the current emergency status history (if any)
         foreach ($ticket->getEmergencyStatusHistories() as $emergencyStatusHistory) {
             if (null === $emergencyStatusHistory->getEndDate()) {
@@ -44,6 +52,12 @@ class ChangeEmergencyStateCommandHandler
             $this->clock->now(),
         );
 
+        // Dispatch event about the toggle
+        if (null !== $previous) {
+            $event = new EmergencyStatusUpdateEvent($ticket, $previous, $command->newEmergencyStatus);
+            $this->eventDispatcher->dispatch($event, TicketUpdateEvent::class);
+        }
+
         return $ticket;
     }
 }

src/Bundle/ChillTicketBundle/src/Event/EmergencyStatusUpdateEvent.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\TicketBundle\Event;
+
+use Chill\TicketBundle\Entity\EmergencyStatusEnum;
+use Chill\TicketBundle\Entity\Ticket;
+
+final class EmergencyStatusUpdateEvent extends TicketUpdateEvent
+{
+    public function __construct(
+        Ticket $ticket,
+        public EmergencyStatusEnum $previousEmergencyStatus,
+        public EmergencyStatusEnum $newEmergencyStatus,
+    ) {
+        parent::__construct(TicketUpdateKindEnum::TOGGLE_EMERGENCY, $ticket);
+    }
+}

src/Bundle/ChillTicketBundle/tests/Action/Ticket/Handler/ChangeEmergencyStateCommandHandlerTest.php

@@ -16,9 +16,13 @@ use Chill\TicketBundle\Action\Ticket\Handler\ChangeEmergencyStateCommandHandler;
 use Chill\TicketBundle\Entity\EmergencyStatusEnum;
 use Chill\TicketBundle\Entity\EmergencyStatusHistory;
 use Chill\TicketBundle\Entity\Ticket;
+use Chill\TicketBundle\Event\EmergencyStatusUpdateEvent;
+use Chill\TicketBundle\Event\TicketUpdateEvent;
 use PHPUnit\Framework\TestCase;
+use Prophecy\Argument;
 use Prophecy\PhpUnit\ProphecyTrait;
 use Symfony\Component\Clock\MockClock;
+use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
 
 /**
  * @internal
@@ -36,7 +40,10 @@ final class ChangeEmergencyStateCommandHandlerTest extends TestCase
         // Create a YES emergency status history
         new EmergencyStatusHistory(EmergencyStatusEnum::YES, $ticket);
 
-        $handler = new ChangeEmergencyStateCommandHandler(new MockClock());
+        $eventDispatcher = $this->prophesize(EventDispatcherInterface::class);
+        $eventDispatcher->dispatch(Argument::type(EmergencyStatusUpdateEvent::class), TicketUpdateEvent::class)->shouldNotBeCalled();
+
+        $handler = new ChangeEmergencyStateCommandHandler(new MockClock(), $eventDispatcher->reveal());
         $command = new ChangeEmergencyStateCommand(EmergencyStatusEnum::YES);
 
         $result = $handler->__invoke($ticket, $command);
@@ -57,7 +64,17 @@ final class ChangeEmergencyStateCommandHandlerTest extends TestCase
         // Create a YES emergency status history
         new EmergencyStatusHistory(EmergencyStatusEnum::YES, $ticket);
 
-        $handler = new ChangeEmergencyStateCommandHandler(new MockClock());
+        $eventDispatcher = $this->prophesize(EventDispatcherInterface::class);
+        $eventDispatcher->dispatch(
+            Argument::that(
+                fn ($e) => $e instanceof EmergencyStatusUpdateEvent
+                && EmergencyStatusEnum::YES === $e->previousEmergencyStatus
+                && EmergencyStatusEnum::NO === $e->newEmergencyStatus
+            ),
+            TicketUpdateEvent::class
+        )->shouldBeCalled();
+
+        $handler = new ChangeEmergencyStateCommandHandler(new MockClock(), $eventDispatcher->reveal());
         $command = new ChangeEmergencyStateCommand(EmergencyStatusEnum::NO);
 
         $result = $handler->__invoke($ticket, $command);
@@ -90,7 +107,17 @@ final class ChangeEmergencyStateCommandHandlerTest extends TestCase
         // Create a NO emergency status history
         new EmergencyStatusHistory(EmergencyStatusEnum::NO, $ticket);
 
-        $handler = new ChangeEmergencyStateCommandHandler(new MockClock());
+        $eventDispatcher = $this->prophesize(EventDispatcherInterface::class);
+        $eventDispatcher->dispatch(
+            Argument::that(
+                fn ($e) => $e instanceof EmergencyStatusUpdateEvent
+                && EmergencyStatusEnum::NO === $e->previousEmergencyStatus
+                && EmergencyStatusEnum::YES === $e->newEmergencyStatus
+            ),
+            TicketUpdateEvent::class
+        )->shouldBeCalled();
+
+        $handler = new ChangeEmergencyStateCommandHandler(new MockClock(), $eventDispatcher->reveal());
         $command = new ChangeEmergencyStateCommand(EmergencyStatusEnum::YES);
 
         $result = $handler->__invoke($ticket, $command);