Add signature functionality to workflow entities

Created new files to add signature functionality to the workflow entities, including signature state enums and signature metadata. Added these changes to the migration script as well. Updated EntityWorkflowStep to include a collection for signatures.

src/Bundle/ChillMainBundle/Entity/Workflow/EntityWorkflowStep.php

@@ -42,19 +42,25 @@ class EntityWorkflowStep
     private array $destEmail = [];
 
     /**
-     * @var Collection<User>
+     * @var Collection<int, User>
      */
     #[ORM\ManyToMany(targetEntity: User::class)]
     #[ORM\JoinTable(name: 'chill_main_workflow_entity_step_user')]
     private Collection $destUser;
 
     /**
-     * @var Collection<User>
+     * @var Collection<int, User>
      */
     #[ORM\ManyToMany(targetEntity: User::class)]
     #[ORM\JoinTable(name: 'chill_main_workflow_entity_step_user_by_accesskey')]
     private Collection $destUserByAccessKey;
 
+    /**
+     * @var Collection <int, EntityWorkflowStepSignature>
+     */
+    #[ORM\OneToMany(mappedBy: 'step', targetEntity: EntityWorkflowStepSignature::class, cascade: ['persist'], orphanRemoval: true)]
+    private Collection $signatures;
+
     #[ORM\ManyToOne(targetEntity: EntityWorkflow::class, inversedBy: 'steps')]
     private ?EntityWorkflow $entityWorkflow = null;
 
@@ -97,6 +103,7 @@ class EntityWorkflowStep
         $this->ccUser = new ArrayCollection();
         $this->destUser = new ArrayCollection();
         $this->destUserByAccessKey = new ArrayCollection();
+        $this->signatures = new ArrayCollection();
         $this->accessKey = bin2hex(openssl_random_pseudo_bytes(32));
     }
 
@@ -136,6 +143,29 @@ class EntityWorkflowStep
         return $this;
     }
 
+    /**
+     * @internal use @see{EntityWorkflowStepSignature}'s constructor instead
+     */
+    public function addSignature(EntityWorkflowStepSignature $signature): self
+    {
+        if (!$this->signatures->contains($signature)) {
+            $this->signatures[] = $signature;
+        }
+
+        return $this;
+    }
+
+    public function removeSignature(EntityWorkflowStepSignature $signature): self
+    {
+        if ($this->signatures->contains($signature)) {
+            $this->signatures->removeElement($signature);
+        }
+
+        $signature->detachEntityWorkflowStep();
+
+        return $this;
+    }
+
     public function getAccessKey(): string
     {
         return $this->accessKey;
@@ -198,6 +228,14 @@ class EntityWorkflowStep
         return $this->entityWorkflow;
     }
 
+    /**
+     * @return Collection<int, EntityWorkflowStepSignature>
+     */
+    public function getSignatures(): Collection
+    {
+        return $this->signatures;
+    }
+
     public function getId(): ?int
     {
         return $this->id;