Refactor API interface

app/controllers/projects/feature_flags_controller.rb

@@ -9,7 +9,6 @@ class Projects::FeatureFlagsController < Projects::ApplicationController
 
   def index
     @feature_flags = project.operations_feature_flags
-    @unleash_instanceid = project.feature_flag_access_token
   end
 
   def new

app/helpers/feature_flags_helper.rb

+# frozen_string_literal: true
+
+module FeatureFlagsHelper
+  def unleash_api_url(project)
+    "#{root_url(only_path: false)}api/v4/feature_flags/projects/#{project.id}/unleash"
+  end
+
+  def unleash_api_instanceid(project)
+    project.feature_flag_access_token
+  end
+end

app/views/projects/feature_flags/_configure_feature_flags_modal.html.haml

@@ -15,9 +15,8 @@
         .form-group
           = label_tag :api_url, s_('FeatureFlags|API URL'), class: 'label-light'
           .input-group
-            - unleash_api_url = "#{root_url(only_path: false)}api/v4/unleash"
             = text_field_tag :api_url,
-              unleash_api_url,
+              unleash_api_url(@project),
               readonly: true,
               class: "form-control js-select-on-focus"
             %span.input-group-append
@@ -28,29 +27,29 @@
                 class: "input-group-text btn btn-default")
 
         .form-group
-          = label_tag :application_name, s_('FeatureFlags|Application name'), class: 'label-light'
+          = label_tag :instance_id, s_('FeatureFlags|Instance ID'), class: 'label-light'
           .input-group
-            = text_field_tag :application_name,
-              @project.id,
+            = text_field_tag :instance_id,
+              unleash_api_instanceid(@project),
               readonly: true,
               class: "form-control js-select-on-focus"
             %span.input-group-append
-              = clipboard_button(target: '#application_name',
-                title: _("Copy name to clipboard"),
+              = clipboard_button(target: '#instance_id',
+                title: _("Copy ID to clipboard"),
                 placement: "left",
                 container: '#configure-feature-flags-modal',
                 class: "input-group-text btn btn-default")
 
         .form-group
-          = label_tag :instance_id, s_('FeatureFlags|Instance ID'), class: 'label-light'
+          = label_tag :application_name, s_('FeatureFlags|Application name'), class: 'label-light'
           .input-group
-            = text_field_tag :instance_id,
-              @unleash_instanceid,
+            = text_field_tag :application_name,
+              "production",
               readonly: true,
               class: "form-control js-select-on-focus"
             %span.input-group-append
-              = clipboard_button(target: '#instance_id',
-                title: _("Copy ID to clipboard"),
+              = clipboard_button(target: '#application_name',
+                title: _("Copy name to clipboard"),
                 placement: "left",
                 container: '#configure-feature-flags-modal',
                 class: "input-group-text btn btn-default")

lib/api/api.rb

@@ -108,6 +108,7 @@ module API
     mount ::API::Environments
     mount ::API::Events
     mount ::API::Features
+    mount ::API::FeatureFlags
     mount ::API::Files
     mount ::API::GroupBoards
     mount ::API::GroupMilestones
@@ -158,7 +159,6 @@ module API
     mount ::API::Templates
     mount ::API::Todos
     mount ::API::Triggers
-    mount ::API::Unleash
     mount ::API::Users
     mount ::API::Variables
     mount ::API::Version

lib/api/feature_flags.rb

+module API
+  class FeatureFlags < Grape::API
+    include PaginationParams
+
+    resource :feature_flags do
+      resource :projects, requirements: API::PROJECT_ENDPOINT_REQUIREMENTS do
+        params do
+          requires :id, type: String, desc: 'The ID of a project'
+        end
+        route_param :id do
+          resource :unleash do
+            before do
+              authenticate_by_unleash_access_token!
+            end
+
+            get 'features' do
+              present project, with: Entities::UnleashFeatures
+            end
+
+            post 'client/register' do
+              # not supported yet
+              status :ok
+            end
+
+            post 'client/metrics' do
+              # not supported yet
+              status :ok
+            end
+          end
+        end
+      end
+
+      helpers do
+        def project
+          @project ||= find_project(params[:id])
+        end
+
+        def unleash_instanceid
+          params[:instanceid] || env[:HTTP_UNLEASH_INSTANCEID]
+        end
+
+        def authenticate_by_unleash_access_token!
+          unless Operations::FeatureFlagsAccessToken.find_by(token: unleash_instanceid, project: project)
+            unauthorized!
+          end
+        end
+      end
+    end
+  end
+end

lib/api/unleash.rb

-module API
-  class Unleash < Grape::API
-    include PaginationParams
-
-    before do
-      unauthorized! unless access_token
-    end
-
-    get ':unleash/features' do
-      present @project, with: Entities::UnleashFeatures
-    end
-
-    post 'unleash/client/register' do
-      status :ok
-    end
-
-    post 'unleash/client/metrics' do
-      status :ok
-    end
-
-    private
-
-    helpers do
-      def project
-        @project ||= find_project(unleash_appname)
-      end
-
-      def access_token
-        @access_token ||= ProjectFeatureFlagsAccessToken.find_by(token: unleash_instanceid, project: project)
-      end
-
-      def unleash_appname
-        params[:appname] || env[:HTTP_UNLEASH_APPNAME]
-      end
-
-      def unleash_instanceid
-        params[:instanceid] || env[:HTTP_UNLEASH_INSTANCEID]
-      end
-    end
-  end
-end