1 files changed, 64 insertions, 0 deletions
diff --git a/app/graphql/resolvers/ci/runner_setup_resolver.rb b/app/graphql/resolvers/ci/runner_setup_resolver.rb
new file mode 100644
index 00000000000..241cd57f74b
--- /dev/null
+++ b/app/graphql/resolvers/ci/runner_setup_resolver.rb
@@ -0,0 +1,64 @@
+# frozen_string_literal: true
+
+module Resolvers
+  module Ci
+    class RunnerSetupResolver < BaseResolver
+      type Types::Ci::RunnerSetupType, null: true
+
+      argument :platform, GraphQL::STRING_TYPE,
+        required: true,
+        description: 'Platform to generate the instructions for'
+
+      argument :architecture, GraphQL::STRING_TYPE,
+        required: true,
+        description: 'Architecture to generate the instructions for'
+
+      argument :project_id, ::Types::GlobalIDType[::Project],
+        required: false,
+        description: 'Project to register the runner for'
+
+      argument :group_id, ::Types::GlobalIDType[::Group],
+        required: false,
+        description: 'Group to register the runner for'
+
+      def resolve(platform:, architecture:, **args)
+        instructions = Gitlab::Ci::RunnerInstructions.new(
+          { current_user: current_user, os: platform, arch: architecture }.merge(target_param(args))
+        )
+
+        {
+          install_instructions: instructions.install_script || other_install_instructions(platform),
+          register_instructions: instructions.register_command
+        }
+      ensure
+        raise Gitlab::Graphql::Errors::ResourceNotAvailable, 'User is not authorized to register a runner for the specified resource!' if instructions.errors.include?('Gitlab::Access::AccessDeniedError')
+      end
+
+      private
+
+      def other_install_instructions(platform)
+        Gitlab::Ci::RunnerInstructions::OTHER_ENVIRONMENTS[platform.to_sym][:installation_instructions_url]
+      end
+
+      def target_param(args)
+        project_param(args[:project_id]) || group_param(args[:group_id]) || {}
+      end
+
+      def project_param(project_id)
+        return unless project_id
+
+        { project: find_object(project_id) }
+      end
+
+      def group_param(group_id)
+        return unless group_id
+
+        { group: find_object(group_id) }
+      end
+
+      def find_object(gid)
+        GlobalID::Locator.locate(gid)
+      end
+    end
+  end
+end