Implement ticket links and blocker state

app/Http/Controllers/ProjectTicketMetadataSettingsController.php

@@ -10,6 +10,7 @@ use App\Http\Requests\UpdateProjectNamedSettingRequest;
 use App\Http\Requests\UpdateTicketFieldDefinitionRequest;
 use App\Models\Project;
 use App\Models\TicketFieldDefinition;
+use App\Models\TicketLinkType;
 use App\Models\TicketPriority;
 use App\Models\TicketType;
 use Illuminate\Database\Eloquent\Model;
@@ -42,6 +43,7 @@ class ProjectTicketMetadataSettingsController extends Controller
             'project' => $project,
             'status' => session('status'),
             'ticketFieldDefinitions' => $project->ticketFieldDefinitions()->get(),
+            'ticketLinkTypes' => $project->ticketLinkTypes()->get(),
             'ticketPriorities' => $project->ticketPriorities()->get(),
             'ticketTypes' => $project->ticketTypes()->get(),
         ]);
@@ -249,6 +251,71 @@ class ProjectTicketMetadataSettingsController extends Controller
             ->with('status', "{$deletedLabel} field was removed.");
     }
 
+    public function storeLinkType(StoreProjectNamedSettingRequest $request, Project $project): RedirectResponse
+    {
+        $this->abortUnlessCanManage($request, $project);
+
+        $ticketLinkType = DB::transaction(function () use ($project, $request): TicketLinkType {
+            $ticketLinkType = $project->ticketLinkTypes()->create([
+                'label' => $request->validated('name'),
+                'position' => $project->ticketLinkTypes()->count() + 1,
+            ]);
+
+            $this->reorderModels(
+                $project->ticketLinkTypes()->whereKeyNot($ticketLinkType->id)->get()->values(),
+                $ticketLinkType,
+                $request->position() ?? $project->ticketLinkTypes()->count(),
+            );
+
+            return $ticketLinkType;
+        });
+
+        return to_route('projects.settings.metadata', $project)
+            ->with('status', "{$ticketLinkType->label} link type was added.");
+    }
+
+    public function updateLinkType(
+        UpdateProjectNamedSettingRequest $request,
+        Project $project,
+        TicketLinkType $ticketLinkType,
+    ): RedirectResponse {
+        $this->abortUnlessCanManage($request, $project);
+
+        DB::transaction(function () use ($project, $request, $ticketLinkType): void {
+            $ticketLinkType->update([
+                'label' => $request->validated('name'),
+            ]);
+
+            $this->reorderModels(
+                $project->ticketLinkTypes()->whereKeyNot($ticketLinkType->id)->get()->values(),
+                $ticketLinkType,
+                $request->position(),
+            );
+        });
+
+        return to_route('projects.settings.metadata', $project)
+            ->with('status', "{$ticketLinkType->fresh()->label} link type was updated.");
+    }
+
+    public function destroyLinkType(
+        Request $request,
+        Project $project,
+        TicketLinkType $ticketLinkType,
+    ): RedirectResponse {
+        $this->abortUnlessCanManage($request, $project);
+
+        $deletedLabel = $ticketLinkType->label;
+
+        DB::transaction(function () use ($project, $ticketLinkType): void {
+            $ticketLinkType->delete();
+
+            $this->persistOrderedModels($project->ticketLinkTypes()->get()->values());
+        });
+
+        return to_route('projects.settings.metadata', $project)
+            ->with('status', "{$deletedLabel} link type was removed.");
+    }
+
     private function abortUnlessCanManage(Request $request, Project $project): void
     {
         abort_unless(