Add GET inventory columns API endpoint [SCI-2615]

app/controllers/api/v1/inventory_columns_controller.rb

@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+module Api
+  module V1
+    class InventoryColumnsController < BaseController
+      before_action :load_team
+      before_action :load_inventory
+
+      def index
+        columns = @inventory.repository_columns
+                            .includes(:repository_list_items)
+                            .page(params[:page])
+                            .per(params[:page_size])
+        render json: columns, each_serializer: InventoryColumnSerializer,
+        include: :inventory_list_items
+      end
+
+      private
+
+      def load_team
+        @team = Team.find(params.require(:team_id))
+        return render json: {}, status: :forbidden unless can_read_team?(@team)
+      end
+
+      def load_inventory
+        @inventory = @team.repositories.find(params.require(:inventory_id))
+      end
+    end
+  end
+end

app/serializers/api/v1/inventory_column_serializer.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module Api
+  module V1
+    class InventoryColumnSerializer < ActiveModel::Serializer
+      type :inventory_columns
+      attributes :name, :data_type
+      has_many :repository_list_items, key: :inventory_list_items,
+                                       serializer: InventoryListItemSerializer,
+                                       class_name: 'RepositoryListItem'
+
+      def data_type
+        type_id = RepositoryColumn
+                  .data_types[object.data_type]
+        I18n.t("api.v1.inventory_data_types.t#{type_id}")
+      end
+    end
+  end
+end

app/serializers/api/v1/inventory_list_item_serializer.rb

@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+module Api
+  module V1
+    class InventoryListItemSerializer < ActiveModel::Serializer
+      type :inventory_list_items
+      attribute :data
+    end
+  end
+end

config/routes.rb

@@ -543,6 +543,7 @@ Rails.application.routes.draw do
       namespace :v1 do
         resources :teams, only: %i(index show) do
           resources :inventories, only: %i(index show) do
+            get 'columns', to: 'inventory_columns#index'
             get 'items', to: 'inventory_items#index'
           end
         end

spec/requests/api/v1/inventory_columns_controller_spec.rb

@@ -0,0 +1,89 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe 'Api::V1::InventoryColumnsController', type: :request do
+  before :all do
+    @user = create(:user)
+    @teams = create_list(:team, 2, created_by: @user)
+    create(:user_team, user: @user, team: @teams.first, role: 2)
+
+    # valid_inventory
+    @valid_inventory = create(:repository, name: Faker::Name.unique.name,
+                              created_by: @user, team: @teams.first)
+
+    # unaccessable_inventory
+    create(:repository, name: Faker::Name.unique.name,
+                created_by: @user, team: @teams.second)
+
+    create(:repository_column, name: Faker::Name.unique.name,
+      repository: @valid_inventory, data_type: :RepositoryTextValue)
+    list_column = create(:repository_column, name: Faker::Name.unique.name,
+      repository: @valid_inventory, data_type: :RepositoryListValue)
+    create(:repository_list_item, repository: @valid_inventory,
+             repository_column: list_column, data: Faker::Name.unique.name)
+    create(:repository_column, name: Faker::Name.unique.name,
+      repository: @valid_inventory, data_type: :RepositoryAssetValue)
+
+    @valid_headers =
+      { 'Authorization': 'Bearer ' + generate_token(@user.id) }
+  end
+
+  describe 'GET inventory_columns, #index' do
+    it 'Response with correct inventory items, default per page' do
+      hash_body = nil
+      get api_v1_team_inventory_columns_path(
+        team_id: @teams.first.id,
+        inventory_id: @teams.first.repositories.first.id
+      ), headers: @valid_headers
+      expect { hash_body = json }.not_to raise_exception
+      expect(hash_body[:data]).to match(
+        ActiveModelSerializers::SerializableResource
+          .new(@valid_inventory.repository_columns.limit(10),
+               each_serializer: Api::V1::InventoryColumnSerializer,
+               include: :inventory_columns)
+          .as_json[:data]
+      )
+      expect(hash_body[:included]).to match(
+        ActiveModelSerializers::SerializableResource
+          .new(@valid_inventory.repository_columns.limit(10),
+               each_serializer: Api::V1::InventoryColumnSerializer,
+               include: :inventory_list_items)
+          .as_json[:included]
+      )
+    end
+
+    it 'When invalid request, user in not member of the team' do
+      hash_body = nil
+      get api_v1_team_inventory_columns_path(
+        team_id: @teams.second.id,
+        inventory_id: @teams.second.repositories.first.id
+      ), headers: @valid_headers
+      expect(response).to have_http_status(403)
+      expect { hash_body = json }.not_to raise_exception
+      expect(hash_body).to match({})
+    end
+
+    it 'When invalid request, non existing inventory' do
+      hash_body = nil
+      get api_v1_team_inventory_columns_path(
+        team_id: @teams.first.id,
+        inventory_id: 123
+      ), headers: @valid_headers
+      expect(response).to have_http_status(404)
+      expect { hash_body = json }.not_to raise_exception
+      expect(hash_body).to match({})
+    end
+
+    it 'When invalid request, repository from another team' do
+      hash_body = nil
+      get api_v1_team_inventory_columns_path(
+        team_id: @teams.first.id,
+        inventory_id: @teams.second.repositories.first.id
+      ), headers: @valid_headers
+      expect(response).to have_http_status(404)
+      expect { hash_body = json }.not_to raise_exception
+      expect(hash_body).to match({})
+    end
+  end
+end