Add can_destroy to GraphQL package type

app/graphql/types/packages/package_type.rb

@@ -28,6 +28,7 @@ module Types
         description: 'Other versions of the package.',
         deprecated: { reason: 'This field is now only returned in the PackageDetailsType', milestone: '13.11' }
       field :status, Types::Packages::PackageStatusEnum, null: false, description: 'Package status.'
+      field :can_destroy, GraphQL::Types::Boolean, null: false, description: 'Whether the user can destroy the package.'
 
       def project
         Gitlab::Graphql::Loaders::BatchModelLoader.new(Project, object.project_id).find
@@ -37,6 +38,10 @@ module Types
         []
       end
 
+      def can_destroy
+        Ability.allowed?(current_user, :destroy_package, object)
+      end
+
       # NOTE: This method must be kept in sync with the union
       # type: `Types::Packages::MetadataType`.
       #

doc/api/graphql/reference/index.md

@@ -12145,6 +12145,7 @@ Represents a package in the Package Registry. Note that this type is in beta and
 
 | Name | Type | Description |
 | ---- | ---- | ----------- |
+| <a id="packagecandestroy"></a>`canDestroy` | [`Boolean!`](#boolean) | Whether the user can destroy the package. |
 | <a id="packagecreatedat"></a>`createdAt` | [`Time!`](#time) | Date of creation. |
 | <a id="packageid"></a>`id` | [`PackagesPackageID!`](#packagespackageid) | ID of the package. |
 | <a id="packagemetadata"></a>`metadata` | [`PackageMetadata`](#packagemetadata) | Package metadata. |
@@ -12204,6 +12205,7 @@ Represents a package details in the Package Registry. Note that this type is in
 
 | Name | Type | Description |
 | ---- | ---- | ----------- |
+| <a id="packagedetailstypecandestroy"></a>`canDestroy` | [`Boolean!`](#boolean) | Whether the user can destroy the package. |
 | <a id="packagedetailstypecreatedat"></a>`createdAt` | [`Time!`](#time) | Date of creation. |
 | <a id="packagedetailstypedependencylinks"></a>`dependencyLinks` | [`PackageDependencyLinkConnection`](#packagedependencylinkconnection) | Dependency link. (see [Connections](#connections)) |
 | <a id="packagedetailstypeid"></a>`id` | [`PackagesPackageID!`](#packagespackageid) | ID of the package. |

spec/fixtures/api/schemas/graphql/packages/package_details.json

@@ -13,7 +13,8 @@
     "pipelines",
     "versions",
     "metadata",
-    "status"
+    "status",
+    "canDestroy"
   ],
   "properties": {
     "id": {
@@ -31,6 +32,9 @@
     "version": {
       "type": ["string", "null"]
     },
+    "canDestroy": {
+      "type": ["boolean"]
+    },
     "packageType": {
       "type": ["string"],
       "enum": [

spec/graphql/types/packages/package_type_spec.rb

@@ -9,7 +9,7 @@ RSpec.describe GitlabSchema.types['Package'] do
       created_at updated_at
       project
       tags pipelines metadata versions
-      status
+      status can_destroy
     ]
 
     expect(described_class).to include_graphql_fields(*expected_fields)