Use dedicated assignee notification payload

app/Actions/Notifications/BuildTicketAssigneeChangedPayload.php

@@ -2,7 +2,6 @@
 
 namespace App\Actions\Notifications;
 
-use App\Enums\NotificationEventType;
 use App\Models\Project;
 use App\Models\Ticket;
 use App\Models\TicketStatus;
@@ -20,11 +19,10 @@ class BuildTicketAssigneeChangedPayload
         ?int $toAssigneeId,
         ?string $toAssigneeName,
         CarbonImmutable $occurredAt,
-    ): TicketStatusChangedPayload {
+    ): TicketAssigneeChangedPayload {
         $ticket->loadMissing('ticketStatus.boardColumn');
 
-        return new TicketStatusChangedPayload(
+        return new TicketAssigneeChangedPayload(
-            eventType: NotificationEventType::TicketAssigneeChanged,
             projectId: $project->id,
             projectKey: $project->key,
             projectName: $project->name,

app/Actions/Notifications/TicketAssigneeChanged.php

@@ -11,7 +11,7 @@ final readonly class TicketAssigneeChanged implements NotificationEvent, ShouldD
     use Dispatchable;
 
     public function __construct(
-        public TicketStatusChangedPayload $payload,
+        public TicketAssigneeChangedPayload $payload,
     ) {}
 
     public function eventType(): NotificationEventType

app/Actions/Notifications/TicketAssigneeChangedPayload.php

@@ -0,0 +1,129 @@
+<?php
+
+namespace App\Actions\Notifications;
+
+use App\Enums\NotificationEventType;
+use Carbon\CarbonImmutable;
+
+final readonly class TicketAssigneeChangedPayload implements NotificationEventPayload
+{
+    public function __construct(
+        public int $projectId,
+        public string $projectKey,
+        public string $projectName,
+        public int $ticketId,
+        public string $ticketKey,
+        public string $ticketTitle,
+        public string $ticketUrl,
+        public ?int $actorId,
+        public ?string $actorName,
+        public ?int $fromStatusId,
+        public ?string $fromStatusLabel,
+        public int $toStatusId,
+        public string $toStatusLabel,
+        public CarbonImmutable $occurredAt,
+        public ?int $fromAssigneeId,
+        public ?string $fromAssigneeName,
+        public ?int $toAssigneeId,
+        public ?string $toAssigneeName,
+    ) {}
+
+    public function projectId(): int
+    {
+        return $this->projectId;
+    }
+
+    /**
+     * @return array<string, scalar|null>
+     */
+    public function deliveryMetadata(): array
+    {
+        return [
+            'project_key' => $this->projectKey,
+            'ticket_key' => $this->ticketKey,
+        ];
+    }
+
+    /**
+     * @return array<string, string>
+     */
+    public function discordTemplateVariables(): array
+    {
+        return [
+            '$url' => $this->ticketUrl,
+            '$ticket_key' => $this->ticketKey,
+            '$ticket_title' => $this->ticketTitle,
+            '$project_name' => $this->projectName,
+            '$status_from' => $this->fromStatusLabel ?? '',
+            '$status_to' => $this->toStatusLabel,
+            '$actor_name' => $this->actorName ?? '',
+            '$assignee_from' => $this->fromAssigneeName ?? '',
+            '$assignee_to' => $this->toAssigneeName ?? '',
+        ];
+    }
+
+    /**
+     * @return array{
+     *     event_type: string,
+     *     project: array{id: int, key: string, name: string},
+     *     ticket: array{id: int, key: string, title: string},
+     *     actor: array{id: int, name: string}|null,
+     *     assignee: array{
+     *         from: array{id: int, name: string}|null,
+     *         to: array{id: int, name: string}|null
+     *     },
+     *     from: array{id: int, label: string}|null,
+     *     to: array{id: int, label: string},
+     *     ticket_url: string,
+     *     occurred_at: string
+     * }
+     */
+    public function toArray(): array
+    {
+        return [
+            'event_type' => NotificationEventType::TicketAssigneeChanged->value,
+            'project' => [
+                'id' => $this->projectId,
+                'key' => $this->projectKey,
+                'name' => $this->projectName,
+            ],
+            'ticket' => [
+                'id' => $this->ticketId,
+                'key' => $this->ticketKey,
+                'title' => $this->ticketTitle,
+            ],
+            'actor' => $this->actorId === null || $this->actorName === null
+                ? null
+                : [
+                    'id' => $this->actorId,
+                    'name' => $this->actorName,
+                ],
+            'assignee' => [
+                'from' => $this->fromAssigneeId === null || $this->fromAssigneeName === null
+                    ? null
+                    : [
+                        'id' => $this->fromAssigneeId,
+                        'name' => $this->fromAssigneeName,
+                    ],
+                'to' => $this->toAssigneeId === null || $this->toAssigneeName === null
+                    ? null
+                    : [
+                        'id' => $this->toAssigneeId,
+                        'name' => $this->toAssigneeName,
+                    ],
+            ],
+            'from' => $this->fromStatusId === null || $this->fromStatusLabel === null
+                ? null
+                : [
+                    'id' => $this->fromStatusId,
+                    'label' => $this->fromStatusLabel,
+                ],
+            'to' => [
+                'id' => $this->toStatusId,
+                'label' => $this->toStatusLabel,
+            ],
+            'ticket_url' => $this->ticketUrl,
+            'occurred_at' => $this->occurredAt->toISOString(),
+        ];
+    }
+}

app/Actions/Notifications/TicketStatusChangedPayload.php

@@ -17,16 +17,11 @@ final readonly class TicketStatusChangedPayload implements NotificationEventPayl
         public string $ticketUrl,
         public ?int $actorId,
         public ?string $actorName,
-        public ?int $fromStatusId,
+        public int $fromStatusId,
-        public ?string $fromStatusLabel,
+        public string $fromStatusLabel,
         public int $toStatusId,
         public string $toStatusLabel,
         public CarbonImmutable $occurredAt,
-        public ?int $fromAssigneeId = null,
-        public ?string $fromAssigneeName = null,
-        public ?int $toAssigneeId = null,
-        public ?string $toAssigneeName = null,
-        public NotificationEventType $eventType = NotificationEventType::TicketStatusChanged,
     ) {}
 
     public function projectId(): int
@@ -55,11 +50,9 @@ final readonly class TicketStatusChangedPayload implements NotificationEventPayl
             '$ticket_key' => $this->ticketKey,
             '$ticket_title' => $this->ticketTitle,
             '$project_name' => $this->projectName,
-            '$status_from' => $this->fromStatusLabel ?? '',
+            '$status_from' => $this->fromStatusLabel,
             '$status_to' => $this->toStatusLabel,
             '$actor_name' => $this->actorName ?? '',
-            '$assignee_from' => $this->fromAssigneeName ?? '',
-            '$assignee_to' => $this->toAssigneeName ?? '',
         ];
     }
 
@@ -69,11 +62,7 @@ final readonly class TicketStatusChangedPayload implements NotificationEventPayl
      *     project: array{id: int, key: string, name: string},
      *     ticket: array{id: int, key: string, title: string},
      *     actor: array{id: int, name: string}|null,
-     *     assignee: array{
+     *     from: array{id: int, label: string},
-     *         from: array{id: int, name: string}|null,
-     *         to: array{id: int, name: string}|null
-     *     },
-     *     from: array{id: int, label: string}|null,
      *     to: array{id: int, label: string},
      *     ticket_url: string,
      *     occurred_at: string
@@ -82,7 +71,7 @@ final readonly class TicketStatusChangedPayload implements NotificationEventPayl
     public function toArray(): array
     {
         return [
-            'event_type' => $this->eventType->value,
+            'event_type' => NotificationEventType::TicketStatusChanged->value,
             'project' => [
                 'id' => $this->projectId,
                 'key' => $this->projectKey,
@@ -99,23 +88,7 @@ final readonly class TicketStatusChangedPayload implements NotificationEventPayl
                     'id' => $this->actorId,
                     'name' => $this->actorName,
                 ],
-            'assignee' => [
+            'from' => [
-                'from' => $this->fromAssigneeId === null || $this->fromAssigneeName === null
-                    ? null
-                    : [
-                        'id' => $this->fromAssigneeId,
-                        'name' => $this->fromAssigneeName,
-                    ],
-                'to' => $this->toAssigneeId === null || $this->toAssigneeName === null
-                    ? null
-                    : [
-                        'id' => $this->toAssigneeId,
-                        'name' => $this->toAssigneeName,
-                    ],
-            ],
-            'from' => $this->fromStatusId === null || $this->fromStatusLabel === null
-                ? null
-                : [
                 'id' => $this->fromStatusId,
                 'label' => $this->fromStatusLabel,
             ],

tests/Feature/Notifications/DeliverNotificationActionTest.php

@@ -558,10 +558,6 @@ class DeliverNotificationActionTest extends TestCase
      *     project: array{id: int, key: string, name: string},
      *     ticket: array{id: int, key: string, title: string},
      *     actor: array{id: int, name: string},
-     *     assignee: array{
-     *         from: array{id: int, name: string}|null,
-     *         to: array{id: int, name: string}|null
-     *     },
      *     from: array{id: int, label: string},
      *     to: array{id: int, label: string},
      *     ticket_url: string,
@@ -586,10 +582,6 @@ class DeliverNotificationActionTest extends TestCase
                 'id' => 7,
                 'name' => 'Erica Example',
             ],
-            'assignee' => [
-                'from' => null,
-                'to' => null,
-            ],
             'from' => [
                 'id' => 1,
                 'label' => 'Backlog',

tests/Feature/Notifications/RenderDiscordMessageTemplateTest.php

@@ -3,8 +3,8 @@
 namespace Tests\Feature\Notifications;
 
 use App\Actions\Notifications\RenderDiscordMessageTemplate;
-use App\Actions\Notifications\TicketStatusChanged;
+use App\Actions\Notifications\TicketAssigneeChanged;
-use App\Actions\Notifications\TicketStatusChangedPayload;
+use App\Actions\Notifications\TicketAssigneeChangedPayload;
 use Carbon\CarbonImmutable;
 use PHPUnit\Framework\Attributes\DataProvider;
 use Tests\TestCase;
@@ -80,9 +80,9 @@ class RenderDiscordMessageTemplateTest extends TestCase
         $this->assertSame('[CORE-42] $unknown moved to Doing', $renderedMessage);
     }
 
-    private function event(): TicketStatusChanged
+    private function event(): TicketAssigneeChanged
     {
-        return new TicketStatusChanged(new TicketStatusChangedPayload(
+        return new TicketAssigneeChanged(new TicketAssigneeChangedPayload(
             projectId: 10,
             projectKey: 'CORE',
             projectName: 'Core Platform',

tests/Feature/Notifications/TicketAssigneeChangedNotificationDispatchTest.php

@@ -3,6 +3,7 @@
 namespace Tests\Feature\Notifications;
 
 use App\Actions\Notifications\DeliverNotificationAction;
+use App\Actions\Notifications\TicketAssigneeChangedPayload;
 use App\Actions\ProjectTicketMetadata\InitializeProjectTicketMetadata;
 use App\Actions\Tickets\Support\AcceptanceCriteriaChecklistMapper;
 use App\Enums\NotificationDeliveryStatus;
@@ -158,6 +159,7 @@ class TicketAssigneeChangedNotificationDispatchTest extends TestCase
             $payload = $job->event->payload();
 
             return $job->notificationActionId === $webhookAction->id
+                && $payload instanceof TicketAssigneeChangedPayload
                 && $payload->projectId === $project->id
                 && $payload->projectKey === 'CORE'
                 && $payload->projectName === 'Core Platform'
@@ -175,7 +177,7 @@ class TicketAssigneeChangedNotificationDispatchTest extends TestCase
                 && $payload->fromAssigneeName === 'Alex Analyst'
                 && $payload->toAssigneeId === $toAssignee->id
                 && $payload->toAssigneeName === 'Priya Planner'
-                && $payload->eventType === NotificationEventType::TicketAssigneeChanged
+                && $payload->toArray()['event_type'] === NotificationEventType::TicketAssigneeChanged->value
                 && $job->notificationDeliveryLogId !== null;
         });
         Queue::assertPushed(DeliverNotificationAction::class, fn (DeliverNotificationAction $job): bool => $job->notificationActionId === $discordAction->id