7 files changed, 126 insertions, 0 deletions
diff --git a/lib/api/entities/access_requester.rb b/lib/api/entities/access_requester.rb
new file mode 100644
index 00000000000..951250225cc
--- /dev/null
+++ b/lib/api/entities/access_requester.rb
@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+module API
+  module Entities
+    class AccessRequester < Grape::Entity
+      expose :user, merge: true, using: UserBasic
+      expose :requested_at
+    end
+  end
+end
diff --git a/lib/api/entities/basic_group_details.rb b/lib/api/entities/basic_group_details.rb
new file mode 100644
index 00000000000..882fce4ef2c
--- /dev/null
+++ b/lib/api/entities/basic_group_details.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+module API
+  module Entities
+    class BasicGroupDetails < Grape::Entity
+      expose :id
+      expose :web_url
+      expose :name
+    end
+  end
+end
diff --git a/lib/api/entities/group.rb b/lib/api/entities/group.rb
new file mode 100644
index 00000000000..8bcad5bca35
--- /dev/null
+++ b/lib/api/entities/group.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+module API
+  module Entities
+    class Group < BasicGroupDetails
+      expose :path, :description, :visibility
+      expose :share_with_group_lock
+      expose :require_two_factor_authentication
+      expose :two_factor_grace_period
+      expose :project_creation_level_str, as: :project_creation_level
+      expose :auto_devops_enabled
+      expose :subgroup_creation_level_str, as: :subgroup_creation_level
+      expose :emails_disabled
+      expose :mentions_disabled
+      expose :lfs_enabled?, as: :lfs_enabled
+      expose :avatar_url do |group, options|
+        group.avatar_url(only_path: false)
+      end
+      expose :request_access_enabled
+      expose :full_name, :full_path
+      expose :parent_id
+
+      expose :custom_attributes, using: 'API::Entities::CustomAttribute', if: :with_custom_attributes
+
+      expose :statistics, if: :statistics do
+        with_options format_with: -> (value) { value.to_i } do
+          expose :storage_size
+          expose :repository_size
+          expose :wiki_size
+          expose :lfs_objects_size
+          expose :build_artifacts_size, as: :job_artifacts_size
+        end
+      end
+    end
+  end
+end
diff --git a/lib/api/entities/group_detail.rb b/lib/api/entities/group_detail.rb
new file mode 100644
index 00000000000..97b98aac585
--- /dev/null
+++ b/lib/api/entities/group_detail.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+module API
+  module Entities
+    class GroupDetail < Group
+      expose :runners_token, if: lambda { |group, options| options[:user_can_admin_group] }
+      expose :projects, using: Entities::Project do |group, options|
+        projects = GroupProjectsFinder.new(
+          group: group,
+          current_user: options[:current_user],
+          options: { only_owned: true, limit: projects_limit }
+        ).execute
+
+        Entities::Project.prepare_relation(projects)
+      end
+
+      expose :shared_projects, using: Entities::Project do |group, options|
+        projects = GroupProjectsFinder.new(
+          group: group,
+          current_user: options[:current_user],
+          options: { only_shared: true, limit: projects_limit }
+        ).execute
+
+        Entities::Project.prepare_relation(projects)
+      end
+
+      def projects_limit
+        if ::Feature.enabled?(:limit_projects_in_groups_api, default_enabled: true)
+          GroupProjectsFinder::DEFAULT_PROJECTS_LIMIT
+        else
+          nil
+        end
+      end
+    end
+  end
+end
diff --git a/lib/api/entities/member.rb b/lib/api/entities/member.rb
new file mode 100644
index 00000000000..558f37d1a56
--- /dev/null
+++ b/lib/api/entities/member.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+module API
+  module Entities
+    class Member < Grape::Entity
+      expose :user, merge: true, using: UserBasic
+      expose :access_level
+      expose :expires_at
+    end
+  end
+end
diff --git a/lib/api/entities/project_daily_fetches.rb b/lib/api/entities/project_daily_fetches.rb
new file mode 100644
index 00000000000..036b5dc99b8
--- /dev/null
+++ b/lib/api/entities/project_daily_fetches.rb
@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+module API
+  module Entities
+    class ProjectDailyFetches < Grape::Entity
+      expose :fetch_count, as: :count
+      expose :date
+    end
+  end
+end
diff --git a/lib/api/entities/project_daily_statistics.rb b/lib/api/entities/project_daily_statistics.rb
new file mode 100644
index 00000000000..803ee445851
--- /dev/null
+++ b/lib/api/entities/project_daily_statistics.rb
@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+module API
+  module Entities
+    class ProjectDailyStatistics < Grape::Entity
+      expose :fetches do
+        expose :total_fetch_count, as: :total
+        expose :fetches, as: :days, using: ProjectDailyFetches
+      end
+    end
+  end
+end