Move package type to his own folder and add tags

- add tags, pipeline and project to package type
- move type and type enum to package folder
- refactor type invocation with new module
- adjust unit tests

app/graphql/resolvers/package_details_resolver.rb

+# frozen_string_literal: true
+
+module Resolvers
+  # No return types defined because they can be different.
+  # rubocop: disable Graphql/ResolverType
+  class PackageDetailsResolver < BaseResolver
+    argument :id, ::Types::GlobalIDType[::Packages::Package],
+      required: true,
+      description: 'The global ID of the package.'
+
+    def resolve(id:)
+      # TODO: remove this line when the compatibility layer is removed
+      # See: https://gitlab.com/gitlab-org/gitlab/-/issues/257883
+      id = ::Types::GlobalIDType[::Packages::Package].coerce_isolated_input(id)
+      GitlabSchema.find_by_gid(id)
+    end
+  end
+end

app/graphql/resolvers/packages_resolver.rb

@@ -2,7 +2,7 @@
 
 module Resolvers
   class PackagesResolver < BaseResolver
-    type Types::PackageType, null: true
+    type Types::Packages::PackageType, null: true
 
     def resolve(**args)
       return unless packages_available?

app/graphql/types/package_type.rb

-# frozen_string_literal: true
-
-module Types
-  class PackageType < BaseObject
-    graphql_name 'Package'
-    description 'Represents a package'
-    authorize :read_package
-
-    field :id, GraphQL::ID_TYPE, null: false, description: 'The ID of the package'
-    field :name, GraphQL::STRING_TYPE, null: false, description: 'The name of the package'
-    field :created_at, Types::TimeType, null: false, description: 'The created date'
-    field :updated_at, Types::TimeType, null: false, description: 'The update date'
-    field :version, GraphQL::STRING_TYPE, null: true, description: 'The version of the package'
-    field :package_type, Types::PackageTypeEnum, null: false, description: 'The type of the package'
-  end
-end

app/graphql/types/package_type_enum.rb

-# frozen_string_literal: true
-
-module Types
-  class PackageTypeEnum < BaseEnum
-    PACKAGE_TYPE_NAMES = {
-      pypi: 'PyPI',
-      npm: 'NPM'
-    }.freeze
-
-    ::Packages::Package.package_types.keys.each do |package_type|
-      type_name = PACKAGE_TYPE_NAMES.fetch(package_type.to_sym, package_type.capitalize)
-      value package_type.to_s.upcase, "Packages from the #{type_name} package manager", value: package_type.to_s
-    end
-  end
-end

app/graphql/types/packages/composer/details_type.rb

+# frozen_string_literal: true
+
+module Types
+  module Packages
+    module Composer
+      class DetailsType < Types::Packages::PackageType
+        graphql_name 'PackageComposerDetails'
+        description 'Details of a Composer package'
+
+        authorize :read_package
+
+        field :composer_metadatum, Types::Packages::Composer::MetadatumType, null: false, description: 'The Composer metadatum.'
+      end
+    end
+  end
+end

app/graphql/types/packages/composer/json_type.rb

+# frozen_string_literal: true
+
+module Types
+  module Packages
+    module Composer
+      # rubocop: disable Graphql/AuthorizeTypes
+      class JsonType < BaseObject
+        graphql_name 'PackageComposerJsonType'
+        description 'Represents a composer JSON file'
+
+        field :name, GraphQL::STRING_TYPE, null: true, description: 'The name set in the Composer JSON file.'
+        field :type, GraphQL::STRING_TYPE, null: true, description: 'The type set in the Composer JSON file.'
+        field :license, GraphQL::STRING_TYPE, null: true, description: 'The license set in the Composer JSON file.'
+        field :version, GraphQL::STRING_TYPE, null: true, description: 'The version set in the Composer JSON file.'
+      end
+    end
+  end
+end

app/graphql/types/packages/composer/metadatum_type.rb

+# frozen_string_literal: true
+
+module Types
+  module Packages
+    module Composer
+      class MetadatumType < BaseObject
+        graphql_name 'PackageComposerMetadatumType'
+        description 'Composer metadatum'
+
+        authorize :read_package
+
+        field :target_sha, GraphQL::STRING_TYPE, null: false, description: 'Target SHA of the package.'
+        field :composer_json, Types::Packages::Composer::JsonType, null: false, description: 'Data of the Composer JSON file.'
+      end
+    end
+  end
+end

app/graphql/types/packages/package_tag_type.rb

+# frozen_string_literal: true
+
+module Types
+  module Packages
+    class PackageTagType < BaseObject
+      graphql_name 'PackageTag'
+      description 'Represents a package tag'
+      authorize :read_package
+
+      field :id, GraphQL::ID_TYPE, null: false, description: 'The ID of the tag.'
+      field :name, GraphQL::STRING_TYPE, null: false, description: 'The name of the tag.'
+      field :created_at, Types::TimeType, null: false, description: 'The created date.'
+      field :updated_at, Types::TimeType, null: false, description: 'The updated date.'
+    end
+  end
+end

app/graphql/types/packages/package_type.rb

+# frozen_string_literal: true
+
+module Types
+  module Packages
+    class PackageType < BaseObject
+      graphql_name 'Package'
+      description 'Represents a package in the Package Registry'
+
+      authorize :read_package
+
+      field :id, GraphQL::ID_TYPE, null: false, description: 'The ID of the package.'
+      field :name, GraphQL::STRING_TYPE, null: false, description: 'The name of the package.'
+      field :created_at, Types::TimeType, null: false, description: 'The created date.'
+      field :updated_at, Types::TimeType, null: false, description: 'The updated date.'
+      field :version, GraphQL::STRING_TYPE, null: true, description: 'The version of the package.'
+      field :package_type, Types::Packages::PackageTypeEnum, null: false, description: 'The type of the package.'
+      field :tags, Types::Packages::PackageTagType.connection_type, null: true, description: 'The package tags.'
+      field :project, Types::ProjectType, null: false, description: 'Project where the package is stored.'
+      field :pipelines, Types::Ci::PipelineType.connection_type, null: true, description: 'Pipelines that built the package.'
+      field :versions, Types::Packages::PackageType.connection_type, null: true, description: 'The other versions of the package.'
+
+      def project
+        Gitlab::Graphql::Loaders::BatchModelLoader.new(Project, object.project_id).find
+      end
+    end
+  end
+end

app/graphql/types/packages/package_type_enum.rb

+# frozen_string_literal: true
+
+module Types
+  module Packages
+    class PackageTypeEnum < BaseEnum
+      PACKAGE_TYPE_NAMES = {
+        pypi: 'PyPI',
+        npm: 'NPM'
+      }.freeze
+
+      ::Packages::Package.package_types.keys.each do |package_type|
+        type_name = PACKAGE_TYPE_NAMES.fetch(package_type.to_sym, package_type.capitalize)
+        value package_type.to_s.upcase, "Packages from the #{type_name} package manager", value: package_type.to_s
+      end
+    end
+  end
+end

app/graphql/types/project_type.rb

@@ -175,7 +175,7 @@ module Types
           description: 'A single issue of the project',
           resolver: Resolvers::IssuesResolver.single
 
-    field :packages, Types::PackageType.connection_type, null: true,
+    field :packages, Types::Packages::PackageType.connection_type, null: true,
          description: 'Packages of the project',
          resolver: Resolvers::PackagesResolver
 

app/graphql/types/query_type.rb

@@ -58,6 +58,11 @@ module Types
             argument :id, ::Types::GlobalIDType[::ContainerRepository], required: true, description: 'The global ID of the container repository'
           end
 
+    field :package_composer_details, Types::Packages::Composer::DetailsType,
+          null: true,
+          description: 'Find a composer package',
+          resolver: Resolvers::PackageDetailsResolver
+
     field :user, Types::UserType,
           null: true,
           description: 'Find a user',

app/policies/packages/composer/metadatum_policy.rb

+# frozen_string_literal: true
+module Packages
+  module Composer
+    class MetadatumPolicy < BasePolicy
+      delegate { @subject.package }
+    end
+  end
+end

app/policies/packages/tag_policy.rb

+# frozen_string_literal: true
+module Packages
+  class TagPolicy < BasePolicy
+    delegate { @subject.package }
+  end
+end

changelogs/unreleased/285467-package-registry-graphql-api.yml

+---
+title: Add composer details GraphQL type and query
+merge_request: 51059
+author:
+type: added

doc/api/graphql/reference/gitlab_schema.graphql

@@ -16521,38 +16521,278 @@ input OncallUserInputType {
 }
 
 """
-Represents a package
+Represents a package in the Package Registry
 """
 type Package {
   """
-  The created date
+  The created date.
   """
   createdAt: Time!
 
   """
-  The ID of the package
+  The ID of the package.
   """
   id: ID!
 
   """
-  The name of the package
+  The name of the package.
   """
   name: String!
 
   """
-  The type of the package
+  The type of the package.
   """
   packageType: PackageTypeEnum!
 
   """
-  The update date
+  Pipelines that built the package.
+  """
+  pipelines(
+    """
+    Returns the elements in the list that come after the specified cursor.
+    """
+    after: String
+
+    """
+    Returns the elements in the list that come before the specified cursor.
+    """
+    before: String
+
+    """
+    Returns the first _n_ elements from the list.
+    """
+    first: Int
+
+    """
+    Returns the last _n_ elements from the list.
+    """
+    last: Int
+  ): PipelineConnection
+
+  """
+  Project where the package is stored.
+  """
+  project: Project!
+
+  """
+  The package tags.
+  """
+  tags(
+    """
+    Returns the elements in the list that come after the specified cursor.
+    """
+    after: String
+
+    """
+    Returns the elements in the list that come before the specified cursor.
+    """
+    before: String
+
+    """
+    Returns the first _n_ elements from the list.
+    """
+    first: Int
+
+    """
+    Returns the last _n_ elements from the list.
+    """
+    last: Int
+  ): PackageTagConnection
+
+  """
+  The updated date.
   """
   updatedAt: Time!
 
   """
-  The version of the package
+  The version of the package.
   """
   version: String
+
+  """
+  The other versions of the package.
+  """
+  versions(
+    """
+    Returns the elements in the list that come after the specified cursor.
+    """
+    after: String
+
+    """
+    Returns the elements in the list that come before the specified cursor.
+    """
+    before: String
+
+    """
+    Returns the first _n_ elements from the list.
+    """
+    first: Int
+
+    """
+    Returns the last _n_ elements from the list.
+    """
+    last: Int
+  ): PackageConnection
+}
+
+"""
+Details of a Composer package
+"""
+type PackageComposerDetails {
+  """
+  The Composer metadatum.
+  """
+  composerMetadatum: PackageComposerMetadatumType!
+
+  """
+  The created date.
+  """
+  createdAt: Time!
+
+  """
+  The ID of the package.
+  """
+  id: ID!
+
+  """
+  The name of the package.
+  """
+  name: String!
+
+  """
+  The type of the package.
+  """
+  packageType: PackageTypeEnum!
+
+  """
+  Pipelines that built the package.
+  """
+  pipelines(
+    """
+    Returns the elements in the list that come after the specified cursor.
+    """
+    after: String
+
+    """
+    Returns the elements in the list that come before the specified cursor.
+    """
+    before: String
+
+    """
+    Returns the first _n_ elements from the list.
+    """
+    first: Int
+
+    """
+    Returns the last _n_ elements from the list.
+    """
+    last: Int
+  ): PipelineConnection
+
+  """
+  Project where the package is stored.
+  """
+  project: Project!
+
+  """
+  The package tags.
+  """
+  tags(
+    """
+    Returns the elements in the list that come after the specified cursor.
+    """
+    after: String
+
+    """
+    Returns the elements in the list that come before the specified cursor.
+    """
+    before: String
+
+    """
+    Returns the first _n_ elements from the list.
+    """
+    first: Int
+
+    """
+    Returns the last _n_ elements from the list.
+    """
+    last: Int
+  ): PackageTagConnection
+
+  """
+  The updated date.
+  """
+  updatedAt: Time!
+
+  """
+  The version of the package.
+  """
+  version: String
+
+  """
+  The other versions of the package.
+  """
+  versions(
+    """
+    Returns the elements in the list that come after the specified cursor.
+    """
+    after: String
+
+    """
+    Returns the elements in the list that come before the specified cursor.
+    """
+    before: String
+
+    """
+    Returns the first _n_ elements from the list.
+    """
+    first: Int
+
+    """
+    Returns the last _n_ elements from the list.
+    """
+    last: Int
+  ): PackageConnection
+}
+
+"""
+Represents a composer JSON file
+"""
+type PackageComposerJsonType {
+  """
+  The license set in the Composer JSON file.
+  """
+  license: String
+
+  """
+  The name set in the Composer JSON file.
+  """
+  name: String
+
+  """
+  The type set in the Composer JSON file.
+  """
+  type: String
+
+  """
+  The version set in the Composer JSON file.
+  """
+  version: String
+}
+
+"""
+Composer metadatum
+"""
+type PackageComposerMetadatumType {
+  """
+  Data of the Composer JSON file.
+  """
+  composerJson: PackageComposerJsonType!
+
+  """
+  Target SHA of the package.
+  """
+  targetSha: String!
 }
 
 """
@@ -16686,6 +16926,66 @@ type PackageSettings {
   mavenDuplicatesAllowed: Boolean!
 }
 
+"""
+Represents a package tag
+"""
+type PackageTag {
+  """
+  The created date.
+  """
+  createdAt: Time!
+
+  """
+  The ID of the tag.
+  """
+  id: ID!
+
+  """
+  The name of the tag.
+  """
+  name: String!
+
+  """
+  The updated date.
+  """
+  updatedAt: Time!
+}
+
+"""
+The connection type for PackageTag.
+"""
+type PackageTagConnection {
+  """
+  A list of edges.
+  """
+  edges: [PackageTagEdge]
+
+  """
+  A list of nodes.
+  """
+  nodes: [PackageTag]
+
+  """
+  Information to aid in pagination.
+  """
+  pageInfo: PageInfo!
+}
+
+"""
+An edge in a connection.
+"""
+type PackageTagEdge {
+  """
+  A cursor for use in pagination.
+  """
+  cursor: String!
+
+  """
+  The item at the end of the edge.
+  """
+  node: PackageTag
+}
+
 enum PackageTypeEnum {
   """
   Packages from the Composer package manager
@@ -16733,6 +17033,11 @@ enum PackageTypeEnum {
   PYPI
 }
 
+"""
+Identifier of Packages::Package
+"""
+scalar PackagesPackageID
+
 """
 Information about pagination in a connection.
 """
@@ -19867,6 +20172,16 @@ type Query {
     fullPath: ID!
   ): Namespace
 
+  """
+  Find a composer package
+  """
+  packageComposerDetails(
+    """
+    The global ID of the package.
+    """
+    id: PackagesPackageID!
+  ): PackageComposerDetails
+
   """
   Find a project
   """

doc/api/graphql/reference/index.md

@@ -2496,16 +2496,58 @@ Autogenerated return type of OncallScheduleUpdate.
 
 ### Package
 
-Represents a package.
+Represents a package in the Package Registry.
 
 | Field | Type | Description |
 | ----- | ---- | ----------- |
-| `createdAt` | Time! | The created date |
-| `id` | ID! | The ID of the package |
-| `name` | String! | The name of the package |
-| `packageType` | PackageTypeEnum! | The type of the package |
-| `updatedAt` | Time! | The update date |
-| `version` | String | The version of the package |
+| `createdAt` | Time! | The created date. |
+| `id` | ID! | The ID of the package. |
+| `name` | String! | The name of the package. |
+| `packageType` | PackageTypeEnum! | The type of the package. |
+| `pipelines` | PipelineConnection | Pipelines that built the package. |
+| `project` | Project! | Project where the package is stored. |
+| `tags` | PackageTagConnection | The package tags. |
+| `updatedAt` | Time! | The updated date. |
+| `version` | String | The version of the package. |
+| `versions` | PackageConnection | The other versions of the package. |
+
+### PackageComposerDetails
+
+Details of a Composer package.
+
+| Field | Type | Description |
+| ----- | ---- | ----------- |
+| `composerMetadatum` | PackageComposerMetadatumType! | The Composer metadatum. |
+| `createdAt` | Time! | The created date. |
+| `id` | ID! | The ID of the package. |
+| `name` | String! | The name of the package. |
+| `packageType` | PackageTypeEnum! | The type of the package. |
+| `pipelines` | PipelineConnection | Pipelines that built the package. |
+| `project` | Project! | Project where the package is stored. |
+| `tags` | PackageTagConnection | The package tags. |
+| `updatedAt` | Time! | The updated date. |
+| `version` | String | The version of the package. |
+| `versions` | PackageConnection | The other versions of the package. |
+
+### PackageComposerJsonType
+
+Represents a composer JSON file.
+
+| Field | Type | Description |
+| ----- | ---- | ----------- |
+| `license` | String | The license set in the Composer JSON file. |
+| `name` | String | The name set in the Composer JSON file. |
+| `type` | String | The type set in the Composer JSON file. |
+| `version` | String | The version set in the Composer JSON file. |
+
+### PackageComposerMetadatumType
+
+Composer metadatum.
+
+| Field | Type | Description |
+| ----- | ---- | ----------- |
+| `composerJson` | PackageComposerJsonType! | Data of the Composer JSON file. |
+| `targetSha` | String! | Target SHA of the package. |
 
 ### PackageFileRegistry
 
@@ -2531,6 +2573,17 @@ Namespace-level Package Registry settings.
 | `mavenDuplicateExceptionRegex` | UntrustedRegexp | When maven_duplicates_allowed is false, you can publish duplicate packages with names that match this regex. Otherwise, this setting has no effect. |
 | `mavenDuplicatesAllowed` | Boolean! | Indicates whether duplicate Maven packages are allowed for this namespace. |
 
+### PackageTag
+
+Represents a package tag.
+
+| Field | Type | Description |
+| ----- | ---- | ----------- |
+| `createdAt` | Time! | The created date. |
+| `id` | ID! | The ID of the tag. |
+| `name` | String! | The name of the tag. |
+| `updatedAt` | Time! | The updated date. |
+
 ### PageInfo
 
 Information about pagination in a connection..

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

+{
+  "type": "object",
+  "allOf": [{ "$ref": "./package_details.json" }],
+  "properties": {
+    "target_sha": {
+      "type": "string"
+    },
+    "composer_json": {
+      "type": "object"
+    }
+  }
+}

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

+{
+  "type": "object",
+  "properties": {
+    "id": {
+      "type": "string"
+    },
+    "name": {
+      "type": "string"
+    },
+    "createdAt": {
+      "type": "string"
+    },
+    "updatedAt": {
+      "type": "string"
+    },
+    "version": {
+      "type": ["string", "null"]
+    },
+    "package_type": {
+      "type": ["string"],
+      "enum": ["MAVEN", "NPM", "CONAN", "NUGET", "PYPI", "COMPOSER", "GENERIC", "GOLANG", "DEBIAN"]
+    },
+    "tags": {
+      "type": "object"
+    },
+    "project": {
+      "type": "object"
+    },
+    "pipelines": {
+      "type": "object"
+    },
+    "versions": {
+      "type": "object"
+    }
+  }
+}

spec/graphql/resolvers/package_details_resolver_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Resolvers::PackageDetailsResolver do
+  include GraphqlHelpers
+
+  let_it_be_with_reload(:project) { create(:project) }
+  let_it_be(:user) { project.owner }
+  let_it_be(:package) { create(:composer_package, project: project) }
+
+  describe '#resolve' do
+    let(:args) do
+      { id: package.to_global_id.to_s }
+    end
+
+    subject { resolve(described_class, ctx: { current_user: user }, args: args).sync }
+
+    it { is_expected.to eq(package) }
+  end
+end

spec/graphql/types/packages/composer/details_type_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe GitlabSchema.types['PackageComposerDetails'] do
+  it { expect(described_class.graphql_name).to eq('PackageComposerDetails') }
+
+  it 'includes all the package fields' do
+    expected_fields = %w[
+      id name version created_at updated_at package_type tags project pipelines versions
+    ]
+
+    expect(described_class).to include_graphql_fields(*expected_fields)
+  end
+
+  it 'includes composer specific files' do
+    expected_fields = %w[
+      composer_metadatum
+    ]
+
+    expect(described_class).to include_graphql_fields(*expected_fields)
+  end
+end

spec/graphql/types/packages/composer/json_type_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe GitlabSchema.types['PackageComposerJsonType'] do
+  it { expect(described_class.graphql_name).to eq('PackageComposerJsonType') }
+
+  it 'includes composer json files' do
+    expected_fields = %w[
+      name type license version
+    ]
+
+    expect(described_class).to include_graphql_fields(*expected_fields)
+  end
+end

spec/graphql/types/packages/composer/metadatum_type_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe GitlabSchema.types['PackageComposerMetadatumType'] do
+  it { expect(described_class.graphql_name).to eq('PackageComposerMetadatumType') }
+
+  it 'includes composer metadatum fields' do
+    expected_fields = %w[
+     target_sha composer_json
+    ]
+
+    expect(described_class).to include_graphql_fields(*expected_fields)
+  end
+end

spec/graphql/types/package_type_spec.rb → spec/graphql/types/packages/package_type_spec.rb

@@ -7,7 +7,7 @@ RSpec.describe GitlabSchema.types['Package'] do
 
   it 'includes all the package fields' do
     expected_fields = %w[
-        id name version created_at updated_at package_type
+        id name version created_at updated_at package_type tags project pipelines versions
     ]
 
     expect(described_class).to include_graphql_fields(*expected_fields)

spec/graphql/types/packages/tag_type_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe GitlabSchema.types['PackageTag'] do
+  it { expect(described_class.graphql_name).to eq('PackageTag') }
+
+  it 'includes all the package tag fields' do
+    expected_fields = %w[
+        id name created_at updated_at
+    ]
+
+    expect(described_class).to include_graphql_fields(*expected_fields)
+  end
+end

spec/graphql/types/query_type_spec.rb

@@ -94,4 +94,10 @@ RSpec.describe GitlabSchema.types['Query'] do
 
     it { is_expected.to have_graphql_type(Types::ContainerRepositoryDetailsType) }
   end
+
+  describe 'package_composer_details field' do
+    subject { described_class.fields['packageComposerDetails'] }
+
+    it { is_expected.to have_graphql_type(Types::Packages::Composer::DetailsType) }
+  end
 end

spec/requests/api/graphql/packages/package_composer_details_spec.rb

+# frozen_string_literal: true
+require 'spec_helper'
+
+RSpec.describe 'package composer details' do
+  using RSpec::Parameterized::TableSyntax
+  include GraphqlHelpers
+
+  let_it_be(:project) { create(:project) }
+  let_it_be(:package) { create(:composer_package, project: project) }
+  let_it_be(:composer_metadatum) do
+    # we are forced to manually create the metadatum, without using the factory to force the sha to be a string
+    # and avoid an error where gitaly can't find the repository
+    create(:composer_metadatum, package: package, target_sha: 'foo_sha', composer_json: { name: 'name', type: 'type', license: 'license', version: 1 })
+  end
+
+  let(:query) do
+    graphql_query_for(
+      'packageComposerDetails',
+      { id: package_global_id },
+      all_graphql_fields_for('PackageComposerDetails', max_depth: 2)
+    )
+  end
+
+  let(:user) { project.owner }
+  let(:package_global_id) { package.to_global_id.to_s }
+  let(:package_composer_details_response) { graphql_data.dig('packageComposerDetails') }
+
+  subject { post_graphql(query, current_user: user) }
+
+  it_behaves_like 'a working graphql query' do
+    before do
+      subject
+    end
+
+    it 'matches the JSON schema' do
+      expect(package_composer_details_response).to match_schema('graphql/packages/package_composer_details')
+    end
+  end
+end