require 'spec_helper'

module Spree
  describe Api::VariantsController, type: :controller do
    render_views

    let!(:product) { create(:product) }
    let!(:variant) do
      variant = product.master
      variant.option_values << create(:option_value)
      variant
    end

    let!(:base_attributes) { Api::ApiHelpers.variant_attributes }
    let!(:show_attributes) { base_attributes.dup.push(:in_stock, :display_price, :variant_properties) }
    let!(:new_attributes) { base_attributes }

    before do
      stub_authentication!
    end

    describe "#index" do
      it "can see a paginated list of variants" do
        api_get :index
        first_variant = json_response["variants"].first
        expect(first_variant).to have_attributes(show_attributes)
        expect(first_variant["stock_items"]).to be_present
        expect(json_response["count"]).to eq(1)
        expect(json_response["current_page"]).to eq(1)
        expect(json_response["pages"]).to eq(1)
      end

      it 'can control the page size through a parameter' do
        create(:variant)
        api_get :index, per_page: 1
        expect(json_response['count']).to eq(1)
        expect(json_response['current_page']).to eq(1)
        expect(json_response['pages']).to eq(3)
      end

      it 'can query the results through a paramter' do
        expected_result = create(:variant, sku: 'FOOBAR')
        api_get :index, q: { sku_cont: 'FOO' }
        expect(json_response['count']).to eq(1)
        expect(json_response['variants'].first['sku']).to eq expected_result.sku
      end

      it "variants returned contain option values data" do
        api_get :index
        option_values = json_response["variants"].last["option_values"]
        expect(option_values.first).to have_attributes([:name,
                                                        :presentation,
                                                        :option_type_name,
                                                        :option_type_id])
      end

      it "variants returned contain images data" do
        variant.images.create!(attachment: image("thinking-cat.jpg"))

        api_get :index

        expect(json_response["variants"].last).to have_attributes([:images])
        expect(json_response['variants'].first['images'].first).to have_attributes([:attachment_file_name,
                                                                                    :attachment_width,
                                                                                    :attachment_height,
                                                                                    :attachment_content_type,
                                                                                    :mini_url,
                                                                                    :small_url,
                                                                                    :product_url,
                                                                                    :large_url])
      end

      # Regression test for https://github.com/spree/spree/issues/2141
      context "a deleted variant" do
        before do
          variant.update_column(:deleted_at, Time.current)
        end

        it "is not returned in the results" do
          api_get :index
          expect(json_response["variants"].count).to eq(0)
        end

        it "is not returned even when show_deleted is passed" do
          api_get :index, show_deleted: true
          expect(json_response["variants"].count).to eq(0)
        end
      end

      context "stock filtering" do
        subject { api_get :index, in_stock_only: true }

        context "variant is out of stock" do
          before do
            variant.stock_items.update_all(count_on_hand: 0)
          end

          it "is not returned in the results" do
            subject
            expect(json_response["variants"].count).to eq 0
          end
        end

        context "variant is in stock" do
          before do
            variant.stock_items.update_all(count_on_hand: 10)
          end

          it "is returned in the results" do
            subject
            expect(json_response["variants"].count).to eq 1
          end
        end
      end

      context "pagination" do
        it "can select the next page of variants" do
          create(:variant)
          api_get :index, page: 2, per_page: 1
          expect(json_response["variants"].first).to have_attributes(show_attributes)
          expect(json_response["total_count"]).to eq(3)
          expect(json_response["current_page"]).to eq(2)
          expect(json_response["pages"]).to eq(3)
        end
      end

      context "stock item filter" do
        let(:stock_location) { variant.stock_locations.first }
        let!(:inactive_stock_location) { create(:stock_location, propagate_all_variants: true, name: "My special stock location", active: false) }

        it "only returns stock items for active stock locations" do
          api_get :index
          variant = json_response['variants'].first
          stock_items = variant['stock_items'].map { |si| si['stock_location_name'] }

          expect(stock_items).to include stock_location.name
          expect(stock_items).not_to include inactive_stock_location.name
        end
      end
    end

    describe "#show" do
      subject { api_get :show, id: variant.to_param }

      it "can see a single variant" do
        subject
        expect(json_response).to have_attributes(show_attributes)
        expect(json_response["stock_items"]).to be_present
        option_values = json_response["option_values"]
        expect(option_values.first).to have_attributes([:name,
                                                        :presentation,
                                                        :option_type_name,
                                                        :option_type_id])
      end

      it "can see a single variant with images" do
        variant.images.create!(attachment: image("thinking-cat.jpg"))

        subject

        expect(json_response).to have_attributes(show_attributes + [:images])
        option_values = json_response["option_values"]
        expect(option_values.first).to have_attributes([:name,
                                                        :presentation,
                                                        :option_type_name,
                                                        :option_type_id])
      end

      context "variant doesn't have variant properties" do
        before { subject }

        it "contains the expected attributes" do
          expect(json_response).to have_attributes(show_attributes)
        end

        it "variant properties is an empty list" do
          expect(json_response["variant_properties"]).to eq []
        end
      end

      context "variant has variant properties" do
        let!(:rule) { create(:variant_property_rule, product: variant.product, option_value: variant.option_values.first) }

        before { subject }

        it "contains the expected attributes" do
          expect(json_response).to have_attributes(show_attributes)
        end

        it "variant properties is an array of variant property values" do
          expected_attrs = [:id, :property_id, :value, :property_name]
          expect(json_response["variant_properties"].first).to have_attributes(expected_attrs)
        end
      end
    end

    it "can learn how to create a new variant" do
      api_get :new
      expect(json_response["attributes"]).to eq(new_attributes.map(&:to_s))
      expect(json_response["required_attributes"]).to be_empty
    end

    it "cannot create a new variant if not an admin" do
      api_post :create, variant: { sku: "12345" }
      assert_unauthorized!
    end

    it "cannot update a variant" do
      api_put :update, id: variant.to_param, variant: { sku: "12345" }
      assert_not_found!
    end

    it "cannot delete a variant" do
      api_delete :destroy, id: variant.to_param
      assert_not_found!
      expect { variant.reload }.not_to raise_error
    end

    context "as an admin" do
      sign_in_as_admin!
      let(:resource_scoping) { { product_id: variant.product.to_param } }

      # Test for https://github.com/spree/spree/issues/2141
      context "deleted variants" do
        before do
          variant.update_column(:deleted_at, Time.current)
        end

        it "are visible by admin" do
          api_get :index, show_deleted: 1
          expect(json_response["variants"].count).to eq(1)
        end
      end

      it "can create a new variant" do
        api_post :create, variant: { sku: "12345" }
        expect(json_response).to have_attributes(new_attributes)
        expect(response.status).to eq(201)
        expect(json_response["sku"]).to eq("12345")

        expect(variant.product.variants.count).to eq(1)
      end

      it "creates new variants with nested option values" do
        option_values = create_list(:option_value, 2)
        expect do
          api_post :create, variant: { sku: "12345",
                                       option_value_ids: option_values.map(&:id) }
        end.to change { Spree::OptionValuesVariant.count }.by(2)
      end

      it "can update a variant" do
        api_put :update, id: variant.to_param, variant: { sku: "12345" }
        expect(response.status).to eq(200)
      end

      it "can delete a variant" do
        api_delete :destroy, id: variant.to_param
        expect(response.status).to eq(204)
        expect { Spree::Variant.find(variant.id) }.to raise_error(ActiveRecord::RecordNotFound)
      end

      it 'variants returned contain cost price data' do
        api_get :index
        expect(json_response["variants"].first.key?(:cost_price)).to eq true
      end
    end
  end
end