require "spec_helper"

describe OrderSyncer do
  describe "updating the shipping method" do
    let!(:subscription) { create(:subscription, with_items: true, with_proxy_orders: true) }
    let!(:order) { subscription.proxy_orders.first.initialise_order! }
    let!(:shipping_method) { subscription.shipping_method }
    let!(:new_shipping_method) { create(:shipping_method, distributors: [subscription.shop]) }

    let(:syncer) { OrderSyncer.new(subscription) }

    context "when the shipping method on an order is the same as the subscription" do
      let(:params) { { shipping_method_id: new_shipping_method.id } }

      before do
        # Create shipping rates for available shipping methods.
        order.shipments.each(&:refresh_rates)
        order.select_shipping_method(shipping_method)
      end

      it "updates the shipping_method on the order and on shipments" do
        expect(order.shipments.first.shipping_method).to eq shipping_method
        subscription.assign_attributes(params)
        expect(syncer.sync!).to be true
        expect(order.reload.shipping_method).to eq new_shipping_method
        expect(order.shipments.first.shipping_method).to eq new_shipping_method
      end
    end

    context "when the shipping method on a shipment is not the same as the original shipping method on the subscription" do
      let(:params) { { shipping_method_id: new_shipping_method.id } }

      context "when the shipping method on a shipment is the same as the new shipping method on the subscription" do
        before do
          # Create shipping rates for available shipping methods.
          order.shipments.each(&:refresh_rates)

          # Updating the shipping method on a shipment updates the shipping method on the order,
          # and vice-versa via logic in Spree's shipments controller. So updating both here mimics that
          # behaviour.
          order.select_shipping_method(new_shipping_method.id)
          subscription.assign_attributes(params)
          expect(syncer.sync!).to be true
        end

        it "does not update the shipping_method on the subscription or on the pre-altered shipment" do
          expect(order.reload.shipping_method).to eq new_shipping_method
          expect(order.reload.shipments.first.shipping_method).to eq new_shipping_method
          expect(syncer.order_update_issues[order.id]).to be nil
        end
      end

      context "when the shipping method on a shipment is not the same as the new shipping method on the subscription" do
        let!(:changed_shipping_method) { create(:shipping_method) }

        before do
          # Create shipping rates for available shipping methods.
          order.shipments.each(&:refresh_rates)

          # Updating the shipping method on a shipment updates the shipping method on the order,
          # and vice-versa via logic in Spree's shipments controller. So updating both here mimics that
          # behaviour.
          order.select_shipping_method(changed_shipping_method.id)
          subscription.assign_attributes(params)

          expect(syncer.sync!).to be true
        end

        it "does not update the shipping_method on the subscription or on the pre-altered shipment" do
          expect(order.reload.shipping_method).to eq changed_shipping_method
          expect(order.reload.shipments.first.shipping_method).to eq changed_shipping_method
          expect(syncer.order_update_issues[order.id]).to include "Shipping Method"
        end
      end
    end
  end

  describe "changing the payment method" do
    let(:subscription) { create(:subscription, with_items: true, with_proxy_orders: true) }
    let(:order) { subscription.proxy_orders.first.initialise_order! }
    let(:payment_method) { subscription.payment_method }
    let(:new_payment_method) { create(:payment_method, distributors: [subscription.shop]) }
    let(:invalid_payment_method) { create(:payment_method, distributors: [create(:enterprise)]) }
    let(:bogus_payment_method) { create(:bogus_payment_method, distributors: [subscription.shop]) }
    let(:syncer) { OrderSyncer.new(subscription) }

    context "when the payment method on an order is the same as the subscription" do
      let(:params) { { payment_method_id: new_payment_method.id } }

      it "voids existing payments and creates a new payment with the relevant payment method" do
        expect(order.payments.reload.first.payment_method).to eq payment_method
        subscription.assign_attributes(params)
        expect(syncer.sync!).to be true
        payments = order.reload.payments
        expect(payments.count).to be 2
        expect(payments.with_state('void').count).to be 1
        expect(payments.with_state('checkout').count).to be 1
        expect(payments.with_state('void').first.payment_method).to eq payment_method
        expect(payments.with_state('checkout').first.payment_method).to eq new_payment_method
      end
    end

    context "when the payment method on a payment is not the same as the subscription" do
      let(:params) { { payment_method_id: new_payment_method.id } }

      context "when the payment method on a payment is the same as the original payment method on the subscription" do
        before do
          order.payments.first.update_attribute(:payment_method_id, new_payment_method.id)
          subscription.assign_attributes(params)
          expect(syncer.sync!).to be true
        end

        it "keeps pre-altered payments and doesn't add an issue to order_update_issues" do
          payments = order.reload.payments
          expect(payments.count).to be 1
          expect(payments.first.payment_method).to eq new_payment_method
          expect(syncer.order_update_issues[order.id]).to be nil
        end
      end

      context "when the payment method on a shipment is not the same as the original payment method on the subscription" do
        let(:changed_payment_method) { create(:payment_method) }

        before do
          order.payments.first.update_attribute(:payment_method_id, changed_payment_method.id)
          subscription.assign_attributes(params)
          expect(syncer.sync!).to be true
        end

        it "keeps pre-altered payments and adds an issue to order_update_issues" do
          payments = order.reload.payments
          expect(payments.count).to be 1
          expect(payments.first.payment_method).to eq changed_payment_method
          expect(syncer.order_update_issues[order.id]).to include "Payment Method"
        end
      end
    end
  end

  describe "changing the billing address" do
    let!(:distributor_address) { create(:address, :randomized) }
    let!(:distributor) { create(:distributor_enterprise, address: distributor_address) }
    let(:subscription) do
      create(:subscription, shop: distributor, shipping_method: shipping_method, with_items: true,
                            with_proxy_orders: true)
    end
    let!(:order) { subscription.proxy_orders.first.initialise_order! }
    let!(:bill_address_attrs) { subscription.bill_address.attributes }
    let!(:ship_address_attrs) { subscription.ship_address.attributes }

    let(:params) { { bill_address_attributes: { id: bill_address_attrs["id"], firstname: "Bill", address1: "123 abc st", phone: "1123581321" } } }
    let(:syncer) { OrderSyncer.new(subscription) }

    context "when a ship address is not required" do
      let!(:shipping_method) do
        create(:shipping_method, distributors: [distributor], require_ship_address: false)
      end

      context "when the bill_address on the order matches that on the subscription" do
        it "updates all bill_address attrs and ship_address names + phone" do
          subscription.assign_attributes(params)
          expect(syncer.sync!).to be true
          expect(syncer.order_update_issues.keys).to_not include order.id
          order.reload;
          expect(order.bill_address.firstname).to eq "Bill"
          expect(order.bill_address.lastname).to eq bill_address_attrs["lastname"]
          expect(order.bill_address.address1).to eq "123 abc st"
          expect(order.bill_address.phone).to eq "1123581321"
          expect(order.ship_address.firstname).to eq "Bill"
          expect(order.ship_address.lastname).to eq bill_address_attrs["lastname"]
          expect(order.ship_address.address1).to eq distributor_address.address1
          expect(order.ship_address.phone).to eq "1123581321"
        end
      end

      context "when the bill_address on the order doesn't match that on the subscription" do
        before do
          order.bill_address.update_attributes!(firstname: "Jane")
          order.update!
        end

        it "does not update bill_address or ship_address on the order" do
          subscription.assign_attributes(params)
          expect(syncer.sync!).to be true
          expect(syncer.order_update_issues.keys).to include order.id
          order.reload;
          expect(order.bill_address.firstname).to eq "Jane"
          expect(order.bill_address.lastname).to eq bill_address_attrs["lastname"]
          expect(order.bill_address.address1).to eq bill_address_attrs["address1"]
          expect(order.bill_address.phone).to eq bill_address_attrs["phone"]
          expect(order.ship_address.firstname).to eq "Jane"
          expect(order.ship_address.lastname).to eq bill_address_attrs["lastname"]
          expect(order.ship_address.address1).to eq distributor_address.address1
          expect(order.ship_address.phone).to eq bill_address_attrs["phone"]
        end
      end
    end

    context "when a ship address is required" do
      let!(:shipping_method) do
        create(:shipping_method, distributors: [distributor], require_ship_address: true)
      end

      context "when the bill_address on the order matches that on the subscription" do
        it "only updates bill_address attrs" do
          subscription.assign_attributes(params)
          expect(syncer.sync!).to be true
          expect(syncer.order_update_issues.keys).to_not include order.id
          order.reload;
          expect(order.bill_address.firstname).to eq "Bill"
          expect(order.bill_address.lastname).to eq bill_address_attrs["lastname"]
          expect(order.bill_address.address1).to eq "123 abc st"
          expect(order.bill_address.phone).to eq "1123581321"
          expect(order.ship_address.firstname).to eq ship_address_attrs["firstname"]
          expect(order.ship_address.lastname).to eq ship_address_attrs["lastname"]
          expect(order.ship_address.address1).to eq ship_address_attrs["address1"]
          expect(order.ship_address.phone).to eq ship_address_attrs["phone"]
        end
      end

      context "when the bill_address on the order doesn't match that on the subscription" do
        before do
          order.bill_address.update_attributes!(firstname: "Jane")
          order.update!
        end

        it "does not update bill_address or ship_address on the order" do
          subscription.assign_attributes(params)
          expect(syncer.sync!).to be true
          expect(syncer.order_update_issues.keys).to include order.id
          order.reload;
          expect(order.bill_address.firstname).to eq "Jane"
          expect(order.bill_address.lastname).to eq bill_address_attrs["lastname"]
          expect(order.bill_address.address1).to eq bill_address_attrs["address1"]
          expect(order.bill_address.phone).to eq bill_address_attrs["phone"]
          expect(order.ship_address.firstname).to eq ship_address_attrs["firstname"]
          expect(order.ship_address.lastname).to eq ship_address_attrs["lastname"]
          expect(order.ship_address.address1).to eq ship_address_attrs["address1"]
          expect(order.ship_address.phone).to eq ship_address_attrs["phone"]
        end
      end
    end
  end

  describe "changing the ship address" do
    let!(:distributor_address) { create(:address, :randomized) }
    let!(:distributor) { create(:distributor_enterprise, address: distributor_address) }
    let!(:subscription) do
      create(:subscription, shop: distributor, shipping_method: shipping_method, with_items: true,
                            with_proxy_orders: true)
    end
    let!(:order) { subscription.proxy_orders.first.initialise_order! }
    let!(:bill_address_attrs) { subscription.bill_address.attributes }
    let!(:ship_address_attrs) { subscription.ship_address.attributes }

    let(:params) { { ship_address_attributes: { id: ship_address_attrs["id"], firstname: "Ship", address1: "123 abc st", phone: "1123581321" } } }
    let(:syncer) { OrderSyncer.new(subscription) }

    context "when a ship address is not required" do
      let!(:shipping_method) do
        create(:shipping_method, distributors: [distributor], require_ship_address: false)
      end

      it "does not change the ship address" do
        subscription.assign_attributes(params)
        expect(syncer.sync!).to be true
        expect(syncer.order_update_issues.keys).to_not include order.id
        order.reload;
        expect(order.ship_address.firstname).to eq bill_address_attrs["firstname"]
        expect(order.ship_address.lastname).to eq bill_address_attrs["lastname"]
        expect(order.ship_address.address1).to eq distributor_address.address1
        expect(order.ship_address.phone).to eq bill_address_attrs["phone"]
      end

      context "but the shipping method is being changed to one that requires a ship_address" do
        let(:new_shipping_method) { create(:shipping_method, distributors: [distributor], require_ship_address: true) }

        before { params.merge!(shipping_method_id: new_shipping_method.id) }

        context "when the original ship address is the bill contact using distributor address" do
          let!(:original_bill_address) { create(:address, :randomized) }
          let!(:original_ship_address) do
            create(:address, firstname: original_bill_address.firstname,
                             lastname: original_bill_address.lastname,
                             address1: distributor_address.address1,
                             phone: original_bill_address.phone)
          end
          let(:subscription) do
            create(:subscription, shop: distributor, bill_address: original_bill_address,
                                  ship_address: original_ship_address,
                                  shipping_method: shipping_method, with_items: true,
                                  with_proxy_orders: true)
          end

          context "when there is no pending shipment using the former shipping method" do
            before do
              order.shipment.destroy
              subscription.assign_attributes(params)
            end

            it "updates ship_address attrs" do
              expect(syncer.sync!).to be true
              expect(syncer.order_update_issues.keys).to include order.id
              order.reload
              expect(order.ship_address.firstname).to eq ship_address_attrs["firstname"]
              expect(order.ship_address.lastname).to eq ship_address_attrs["lastname"]
              expect(order.ship_address.address1).to eq ship_address_attrs["address1"]
              expect(order.ship_address.phone).to eq ship_address_attrs["phone"]
            end
          end

          context "when the order has a pending shipment using the former shipping method" do
            before do
              subscription.assign_attributes(params)
            end

            it "updates ship_address attrs" do
              expect(syncer.sync!).to be true
              expect(syncer.order_update_issues.keys).not_to include order.id
              order.reload
              expect(order.ship_address.firstname).to eq "Ship"
              expect(order.ship_address.lastname).to eq ship_address_attrs["lastname"]
              expect(order.ship_address.address1).to eq "123 abc st"
              expect(order.ship_address.phone).to eq "1123581321"
            end
          end
        end
      end
    end

    context "when a ship address is required" do
      let!(:shipping_method) do
        create(:shipping_method, distributors: [distributor], require_ship_address: true)
      end

      context "when the ship address on the order matches that on the subscription" do
        it "updates ship_address attrs" do
          subscription.assign_attributes(params)
          expect(syncer.sync!).to be true
          expect(syncer.order_update_issues.keys).to_not include order.id
          order.reload;
          expect(order.ship_address.firstname).to eq "Ship"
          expect(order.ship_address.lastname).to eq ship_address_attrs["lastname"]
          expect(order.ship_address.address1).to eq "123 abc st"
          expect(order.ship_address.phone).to eq "1123581321"
        end
      end

      context "when the ship address on the order doesn't match that on the subscription" do
        before do
          order.ship_address.update_attributes(firstname: "Jane")
          order.update!
        end

        it "does not update ship_address on the order" do
          subscription.assign_attributes(params)
          expect(syncer.sync!).to be true
          expect(syncer.order_update_issues.keys).to include order.id
          order.reload;
          expect(order.ship_address.firstname).to eq "Jane"
          expect(order.ship_address.lastname).to eq ship_address_attrs["lastname"]
          expect(order.ship_address.address1).to eq ship_address_attrs["address1"]
          expect(order.ship_address.phone).to eq ship_address_attrs["phone"]
        end
      end
    end
  end

  describe "changing the quantity of a line item" do
    let(:subscription) { create(:subscription, with_items: true, with_proxy_orders: true) }
    let(:order) { subscription.proxy_orders.first.initialise_order! }
    let(:sli) { subscription.subscription_line_items.first }
    let(:variant) { sli.variant }

    before { variant.update_attribute(:on_hand, 2) }

    context "when quantity is within available stock" do
      let(:params) { { subscription_line_items_attributes: [{ id: sli.id, quantity: 2 }] } }
      let(:syncer) { OrderSyncer.new(subscription) }

      it "updates the line_item quantities and totals on all orders" do
        expect(order.reload.total.to_f).to eq 59.97
        subscription.assign_attributes(params)
        expect(syncer.sync!).to be true
        line_items = Spree::LineItem.where(order_id: subscription.orders, variant_id: sli.variant_id)
        expect(line_items.map(&:quantity)).to eq [2]
        expect(order.reload.total.to_f).to eq 79.96
      end
    end

    context "when quantity is greater than available stock" do
      let(:params) { { subscription_line_items_attributes: [{ id: sli.id, quantity: 3 }] } }
      let(:syncer) { OrderSyncer.new(subscription) }

      before do
        expect(order.reload.total.to_f).to eq 59.97
        subscription.assign_attributes(params)
      end

      context "when order is not complete" do
        it "updates the line_item quantities and totals on all orders" do
          expect(syncer.sync!).to be true

          line_items = Spree::LineItem.where(order_id: subscription.orders, variant_id: sli.variant_id)
          expect(line_items.map(&:quantity)).to eq [3]
          expect(order.reload.total.to_f).to eq 99.95
        end
      end

      context "when order is complete" do
        it "does not update the line_item quantities and adds the order to order_update_issues with insufficient stock" do
          AdvanceOrderService.new(order).call

          expect(syncer.sync!).to be true

          line_items = Spree::LineItem.where(order_id: subscription.orders, variant_id: sli.variant_id)
          expect(line_items.map(&:quantity)).to eq [1]
          expect(order.reload.total.to_f).to eq 59.97
          line_item = order.line_items.find_by_variant_id(sli.variant_id)
          expect(syncer.order_update_issues[order.id]).to include "#{line_item.product.name} - #{line_item.variant.full_name} - Insufficient stock available"
        end

        it "does not update the line_item quantities and adds the order to order_update_issues with out of stock" do
          # this single item available is used when the order is completed below, making the item out of stock
          variant.update_attribute(:on_hand, 1)
          AdvanceOrderService.new(order).call

          expect(syncer.sync!).to be true

          line_item = order.line_items.find_by_variant_id(sli.variant_id)
          expect(syncer.order_update_issues[order.id]).to include "#{line_item.product.name} - #{line_item.variant.full_name} - Out of Stock"
        end
      end
    end

    context "where the quantity of the item on an initialised order has already been changed" do
      let(:params) { { subscription_line_items_attributes: [{ id: sli.id, quantity: 3 }] } }
      let(:syncer) { OrderSyncer.new(subscription) }
      let(:changed_line_item) { order.line_items.find_by_variant_id(sli.variant_id) }

      before { variant.update_attribute(:on_hand, 3) }

      context "when the changed line_item quantity matches the new quantity on the subscription line item" do
        before { changed_line_item.update_attributes(quantity: 3) }

        it "does not change the quantity, and doesn't add the order to order_update_issues" do
          expect(order.reload.total.to_f).to eq 99.95
          subscription.assign_attributes(params)
          expect(syncer.sync!).to be true
          expect(changed_line_item.reload.quantity).to eq 3
          expect(order.reload.total.to_f).to eq 99.95
          expect(syncer.order_update_issues[order.id]).to be nil
        end
      end

      context "when the changed line_item quantity doesn't match the new quantity on the subscription line item" do
        before { changed_line_item.update_attributes(quantity: 2) }

        it "does not change the quantity, and adds the order to order_update_issues" do
          expect(order.reload.total.to_f).to eq 79.96

          subscription.assign_attributes(params)
          expect(syncer.sync!).to be true

          expect(changed_line_item.reload.quantity).to eq 2
          expect(order.reload.total.to_f).to eq 79.96
          expect(syncer.order_update_issues[order.id]).to include "#{changed_line_item.product.name} - #{changed_line_item.variant.full_name}"
        end
      end
    end
  end

  describe "adding a new line item" do
    let(:subscription) { create(:subscription, with_items: true, with_proxy_orders: true) }
    let(:order) { subscription.proxy_orders.first.initialise_order! }
    let(:variant) { create(:variant) }
    let(:syncer) { OrderSyncer.new(subscription) }

    before do
      expect(order.reload.total.to_f).to eq 59.97
      subscription.assign_attributes(params)
    end

    context "when quantity is within available stock" do
      let(:params) { { subscription_line_items_attributes: [{ id: nil, variant_id: variant.id, quantity: 1 }] } }

      it "adds the line item and updates the total on all orders" do
        expect(syncer.sync!).to be true

        line_items = Spree::LineItem.where(order_id: subscription.orders, variant_id: variant.id)
        expect(line_items.map(&:quantity)).to eq [1]
        expect(order.reload.total.to_f).to eq 79.96
      end
    end

    context "when quantity is greater than available stock" do
      let(:params) { { subscription_line_items_attributes: [{ id: nil, variant_id: variant.id, quantity: 7 }] } }

      context "when order is not complete" do
        it "adds the line_item and updates totals on all orders" do
          expect(syncer.sync!).to be true

          line_items = Spree::LineItem.where(order_id: subscription.orders, variant_id: variant.id)
          expect(line_items.map(&:quantity)).to eq [7]
          expect(order.reload.total.to_f).to eq 199.9
        end
      end

      context "when order is complete" do
        before { AdvanceOrderService.new(order).call }

        it "does not add line_item and adds the order to order_update_issues" do
          expect(syncer.sync!).to be true

          line_items = Spree::LineItem.where(order_id: subscription.orders, variant_id: variant.id)
          expect(line_items.map(&:quantity)).to eq []
          expect(order.reload.total.to_f).to eq 59.97
          expect(syncer.order_update_issues[order.id]).to include "#{variant.product.name} - #{variant.full_name} - Insufficient stock available"
        end

        context "and then updating the quantity of that subscription line item that was not added to the completed order" do
          it "does nothing to the order and adds the order to order_update_issues" do
            expect(syncer.sync!).to be true

            line_items = Spree::LineItem.where(order_id: subscription.orders, variant_id: variant.id)
            expect(line_items.map(&:quantity)).to eq []

            subscription.save # this is necessary to get an id on the subscription_line_items
            params = { subscription_line_items_attributes: [{ id: subscription.subscription_line_items.last.id, quantity: 2 }] }
            subscription.assign_attributes(params)
            expect(syncer.sync!).to be true

            line_items = Spree::LineItem.where(order_id: subscription.orders, variant_id: variant.id)
            expect(line_items.map(&:quantity)).to eq []
            expect(syncer.order_update_issues[order.id]).to include "#{variant.product.name} - #{variant.full_name}"
          end
        end
      end
    end
  end

  describe "removing an existing line item" do
    let(:subscription) { create(:subscription, with_items: true, with_proxy_orders: true) }
    let(:order) { subscription.proxy_orders.first.initialise_order! }
    let(:sli) { subscription.subscription_line_items.first }
    let(:variant) { sli.variant }
    let(:params) { { subscription_line_items_attributes: [{ id: sli.id, _destroy: true }] } }
    let(:syncer) { OrderSyncer.new(subscription) }

    it "removes the line item and updates totals on all orders" do
      expect(order.reload.total.to_f).to eq 59.97
      subscription.assign_attributes(params)
      expect(syncer.sync!).to be true
      line_items = Spree::LineItem.where(order_id: subscription.orders, variant_id: variant.id)
      expect(line_items.count).to be 0
      expect(order.reload.total.to_f).to eq 39.98
    end
  end
end