Implementa revisao de adjudicacoes e navegacao partilhada do SGC

app/Services/PurchaseWorkflow.php

@@ -3,6 +3,7 @@
 namespace App\Services;
 
 use App\Enums\PurchasingRole;
+use App\Models\AwardCancellation;
 use App\Models\Equipment;
 use App\Models\ProposalEvaluation;
 use App\Models\PurchaseAward;
@@ -77,6 +78,7 @@ class PurchaseWorkflow
             $user = app(CurrentActor::class)->lock($user);
             $requisition = Requisition::query()->lockForUpdate()->findOrFail($award->requisition_id);
             $award = PurchaseAward::query()->lockForUpdate()->findOrFail($award->id);
+            $this->assertNoPendingCancellation($award);
             abort_unless($this->canDecide($user, $award, $requisition), 403);
             if ($decision === 'approved') {
                 $this->currentBasis($user, $award, $requisition);
@@ -105,6 +107,7 @@ class PurchaseWorkflow
             if ($existing) {
                 return $existing;
             }
+            $this->assertNoPendingCancellation($award);
             if ($award->status !== 'approved') {
                 throw ValidationException::withMessages(['approvals' => 'Conclua as aprovações do valor adjudicado antes de emitir a ordem.']);
             }
@@ -287,4 +290,11 @@ class PurchaseWorkflow
             app(EquipmentWorkflow::class)->line($line->toArray(), $requisition->department_id, $requisition->priority);
         }
     }
+
+    private function assertNoPendingCancellation(PurchaseAward $award): void
+    {
+        if (AwardCancellation::query()->where('purchase_award_id', $award->id)->where('status', 'pending')->exists()) {
+            throw ValidationException::withMessages(['cancellation' => 'Existe pedido de cancelamento pendente. Aguarde a decisão antes de aprovar ou emitir.']);
+        }
+    }
 }