Moved everything relating to cases into opencase_cases module

modules/opencase_cases/src/OCCaseAccessControlHandler.php

@@ -0,0 +1,55 @@
+<?php
+
+namespace Drupal\opencase_entities;
+
+use Drupal\Core\Entity\EntityAccessControlHandler;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Session\AccountInterface;
+use Drupal\Core\Access\AccessResult;
+use Drupal\opencase_entities\CaseInvolvement;
+
+/**
+ * Access controller for the Case entity.
+ *
+ * @see \Drupal\opencase_entities\Entity\OCCase.
+ */
+class OCCaseAccessControlHandler extends EntityAccessControlHandler {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function checkAccess(EntityInterface $entity, $operation, AccountInterface $account) {
+    /** @var \Drupal\opencase_entities\Entity\OCCaseInterface $entity */
+    switch ($operation) {
+      case 'view':
+        if (!$entity->isPublished()) {
+          return AccessResult::allowedIfHasPermission($account, 'view unpublished case entities');
+        }
+        return AccessResult::allowedIf(
+            $account->hasPermission('view published case entities')
+            || CaseInvolvement::userIsInvolved($account, $entity)
+        );
+      case 'update':   // you can edit the case only if a) you can see it and b) you have the permission to edit cases.
+        return AccessResult::allowedIf(
+            $account->hasPermission('edit case entities')
+            && ($account->hasPermission('view published case entities') || CaseInvolvement::userIsInvolved($account, $entity))
+        );
+      case 'delete':   // you can delete the case only if a) you can see it and b) you have the permission to delete cases.
+        return AccessResult::allowedIf(
+            $account->hasPermission('delete case entities')
+            && ($account->hasPermission('view published case entities') || CaseInvolvement::userIsInvolved($account, $entity))
+        );
+    }
+
+    // Unknown operation, no opinion.
+    return AccessResult::neutral();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function checkCreateAccess(AccountInterface $account, array $context, $entity_bundle = NULL) {
+    return AccessResult::allowedIfHasPermission($account, 'add case entities');
+  }
+
+}